RUUD 199,900 Btu-h Outdoor Non Condensing Natural Gas Tankless Water Heater User Manual
- June 14, 2024
- RUUD
Table of Contents
- RUUD 199,900 Btu-h Outdoor Non Condensing Natural Gas Tankless Water
- Product Information
- Product Usage Instructions
- FAQ (Frequently Asked Questions)
- Safety
- INSTALLATION INSTRUCTIONS
- Final Considerations
- Electrical Wiring
- USING YOUR WATER HEATER
- CARING FOR YOUR WATER HEATER
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
RUUD 199,900 Btu-h Outdoor Non Condensing Natural Gas Tankless Water
Heater
Product Information
The High-Efficiency Non-Condensing Tankless Water Heater is a certified product that provides efficient and reliable heating for your water needs. With models available in 199,900 Btu/h, 180,000 Btu/h, and 160,000 Btu/h, this water heater is designed to deliver high performance while minimizing energy consumption.
Specifications
- Model: Noncondensing
- BTU/h: 199,900, 180,000, and 160,000
- Emissions: Low NOx
- Compliance: SCAQMD Rule 1146.2
Product Usage Instructions
Safety Precautions
Before using the water heater, it is important to familiarize yourself with the safety precautions to ensure your safety and the safety of others. Always read and follow all safety messages provided in the user manual and on the appliance.
Installation
Prior to installing the water heater, carefully read and understand the Use and Care Manual. Improper installation may result in fire, explosion, or property damage. If you are unsure about the installation process, seek assistance from a qualified service technician or your local gas utility.
Water Heater Venting Safety
It is crucial to ensure proper installation of the coaxial vent system on the water heater. The vent system should be inspected at initial start-up and at least annually thereafter. Refer to the Care and Cleaning section of the manual for detailed instructions on inspecting the coaxial vent system.
Flammable Vapors
Do not use or store flammable products such as gasoline, solvents, or adhesives in the same room or area near the water heater. Flammable vapors can ignite and cause explosions or severe burns. Keep flammable products far away from the heater, store them in approved containers, keep them tightly closed, and out of children’s reach.
FAQ (Frequently Asked Questions)
Q: Can I install the water heater myself?
A: It is recommended to seek assistance from a qualified service technician or your local gas utility for the installation process to ensure proper and safe installation.
Q: How often should I inspect the coaxial vent system?
A: The coaxial vent system should be inspected at initial start-up and at least annually thereafter. Refer to the Care and Cleaning section of the manual for detailed instructions.
Q: Can I store flammable products near the water heater?
A: No, it is important to keep flammable products far away from the water heater. Store them in approved containers, keep them tightly closed, and out of children’s reach to prevent accidents.
HIGH-EFFICIENCY NON-CONDENSING TANKLESS WATER HEATER
USE AND CARE MANUAL
With Installation Instructions for the Installer
Noncondensing 199,900 Btu/h, 180,000 Btu/h, and 160,000 Btu/h Models
DESIGN
CERTIFIED
®
CERTIFIED R
w w w. a h r i d i r e c t o r y. o r g
ULTRA
Low NOx
Emissions
SCAQMD Rule 1146.2
WARNING:
If the information in these instructions is not followed exactly, a fire or
explosion may result, causing death, personal injury, or property damage.
For Your Safety!
· Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance. To do so may result in an explosion
or fire.
· Installation and service must be performed by a qualified installer, service
agency, or the gas supplier.
What to Do If You Smell Gas
· Do not try to light any appliance. · Do not touch any electrical switch; do
not use
any phone in your building. · Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s instructions. · If you cannot
reach your gas supplier, call the fire department. · Do not return to your
home until authorized by the gas supplier or fire department.
Do not destroy manual. Please read carefully and keep in a safe place for
future reference.
Print 2D Bar Code
Here
AP22009 Rev 04
CONTENTS
Safety
Important Safety Information Safety Precautions 2 8
Product Information Product Information 8 Specifications 9, 10 Flow Rate vs
Pressure Drop RTGH-Series-311 General Descriptions12, 13
Installation Instructions Standards Compliance 15 Choosing a Location 15, 16
Product Inspection 17 Water Heater Installation 17 20 Venting and High-
Altitude Adjustments 21 34 Water Quality/Supply 35 39 Gas Supply 39 44
Electrical Wiring45 Remote Control Selection and Location46 Remote Control
Installation 47 WiFi Remote Installation 48, 49 Insulation Blankets and
Installation Precautions 50 Installation Checklist51
Using Your Water Heater Activating the Water Heater 52 Operating Instructions
53 Setting the Water Temperature 54 58 WiFi Set-up58 Piping for Space
Heaters 59 Recirculation Pump Control 60 63 Water Saving Control Option 64,
65
Caring for Your Water Heater Water Heater Inspections 66, 67 Care and Cleaning
68, 69 Preventive Maintenance 70 Draining the Water Heater 71 72 Freeze
Protection 73 Vacation and Extended Shutdown 74 Troubleshooting Chart 74, 75
Service Error Code Chart 76, 77 Call for Assistance 77 Maintenance Notice
Option 78, 79
If You Need Service Parts Ordering 80, 81 Warranty Information82, 83
IMPORTANT SAFETY INFORMATION
READ THE SAFETY INFORMATION
Your safety and the safety of others are very important. There are many important safety messages in this manual and on your appliance. Always read and obey all safety messages.
This is the safety alert symbol. Recognize this
! symbol as an indication of Important Safety Information! This symbol alerts
you to potential
hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word
“DANGER,” “WARNING,” “CAUTION,” or “NOTICE.”
These words mean:
DANGER: !
An imminently hazardous situation that will result in
death or serious injury.
WARNING: !
A potentially hazardous situation that can result in
death or serious injury and/or
damage to property.
! WARNINGS:
· Improper installation, adjustment, alteration, service, or maintenance can
cause death, personal injury, or property damage. Follow the instructions in
this manual.
READ ALL INSTRUCTIONS
BEFORE USING.
Be sure to read and understand the entire Use and Care Manual before
attempting to install or operate this water heater It may save you time and
money Pay particular attention to the Safety Instructions Failure to follow
these warnings could result in death or serious bodily injury Should you have
problems understanding the instructions in this manual, or have any questions,
STOP and get help from a qualified service technician or the local gas utility
CAUTION: !
A potentially hazardous situation that may result in
minor or moderate injury.
NOTICE:
2
Attention is called to observe a specified procedure or maintain a specific condition.
Safety
IMPORTANT SAFETY INFORMATION
Water Heater Venting Safety
! DANGER:
· Failure to install and properly vent the water heater to the outdoors as
outlined in the “Venting” section of the Installation Instructions in this
manual will result in death from fire, explosion, or asphyxiation from carbon
monoxide. NEVER operate this water heater unless it is properly vented and has
an adequate air supply for proper operation.
· Be sure to inspect the vent terminal, the air intake, and
the coaxial vent system on the water heater for proper
installation at initial start-up and at least annually thereafter.
Refer to the “Care and Cleaning” section of this manual for
more information regarding coaxial vent system inspection.
! WARNINGS:
· Gasoline and other flammable liquids, materials, and vapors (including paint
thinners, solvents, and adhesives) are extremely dangerous. DO NOT handle,
use, or store gasoline or other flammable or combustible materials anywhere in
the vicinity of a water heater or any other appliance. Be sure to read and
follow the labels on the water heater, as well as the warnings printed in this
manual. Failure to do so can result in death, bodily injury, or property
damage.
· Combustible construction refers to adjacent walls and ceilings and should
not be confused with combustible or flammable products and materials.
Combustible materials, such as clothing, cleaning materials, or flammable
liquids, should never be stored in the vicinity of this or any gas appliance.
Fire or explosion can occur causing death, personal injury, and/or product
damage. See page 16 for clearances to combustible materials.
· Follow vent manufacturer’s instructions for venting installation, including
additional clearances from combustibles, to avoid conditions that can lead to
death, personal injury, and/or property damage.
· Use tankless water heater manufacturerapproved Category III Stainless Steel
vent material only. No other vent material is permitted.
· Moisture in the flue gas will condense as it leaves the vent terminal. In
cold weather this condensate can freeze on the exterior wall, under the eaves,
and on surrounding objects. Some discoloration to the exterior of the building
is to be expected. However, improper location or installation can result in
severe damage to the structure or exterior finish of the building.
DANGER
FLAMMABLES
Flammable Vapors
Vapors from flammable liquids will explode and catch fire causing death or
severe burns.
Do not use or store flammable products such as gasoline, solvents or adhesives
in the same room or area near the water heater.
Keep flammable products: 1. far away from heater, 2. in approved containers,
3. tightly closed and 4. out of children’s reach.
Water heater has a main burner flame. The main burner flame: 1. which can come
on
at any time and 2. will ignite flammable
vapors.
Vapors: 1. cannot be seen, 2. are heavier than air, 3. go a long way on the
floor and
4. can be carried from other rooms to the main burner flame by air currents.
Installation: Do not install water heater where flammable products will be stored or used unless the main burner flame is at least
18″ above the floor. This will reduce, but not eliminate, the risk of vapors being ignited by the main burner flame.
Read and follow water heater warnings and instructions. If owners manual is missing, contact the retailer or manufacturer.
· For multiple-unit installation, a minimum distance between vent terminations
must be maintained to prevent recirculation of vent gases. Maintain a center-
to-center distance between vent terminations of 19 in. (48 cm) for two-unit
installation. Maintain a center-to-center distance between vent terminations
of 21 in. (53 cm) for installation of three or more units.
! CAUTIONS:
· Ensure that the appliance vent is securely attached to the water heater
collar.
· Condensate must drain away from the water heater and should not be allowed
to drain back into any part of the vent system.
· DO NOT operate without the condensate trap connected to the vent and routed
to the proper drain.
· Follow the vent manufacturer’s installation instructions because the design
might vary from manufacturer to manufacturer.
3
IMPORTANT SAFETY INFORMATION
Safety
Water Supply Safety
! DANGERS:
· WATER TEMPERATURE SETTINGS Safety and energy conservation are factors to
be considered when selecting the water temperature setting of a water heater’s
remote control. Water temperatures above 125°F (52°C) can cause death or
severe burns from scalding. Be sure to read and follow the warnings outlined
on the pictured label.
! DANGER
HOT
! CAUTIONS:
· This water heater must only be used with the following water supply system
conditions:
With clean, potable water free of corrosive chemicals, sand, dirt, or other
contaminants.
With inlet water temperatures above 32°F (0°C), but not exceeding 120°F
(49°C).
· There is a hot water scald potential if the water temperature is set too
high. Households with small children, the disabled, or elderly persons may
require a 120°F (49°C) or lower temperature setting to prevent contact with
“HOT” water.
· Before manually operating the relief valve, make certain no one will be
exposed to the danger of the hot water released by the valve. The water may be
hot enough to create a scald hazard. The water should be released into a
suitable drain to prevent injury or property damage.
BURN
Water temperature over 125°F (52°C) can cause severe burns instantly or death
from scalds. Children, disabled and elderly are at highest risk of being
scalded. See instruction manual before setting temperature at water heater.
Feel water before bathing or showering. Temperature limiting valves are
available, see manual.
DO NOT reverse the hot and cold water connections. The water heater will not
operate.
· Even when drained properly, a small amount of water will remain in the water
heater. In cold weather conditions, this water can freeze. If this happens,
allow the defrost protection on the heater at least 30 minutes to melt the
frozen water or the water heater may not work properly.
· Failure to perform the recommended Routine Preventive Maintenance can harm the proper operation of this water heater, which can cause carbon monoxide dangers, excessive hot water temperatures, and other potentially hazardous conditions.
Time/Temperature Relationship in Scalds
Water Temperature
Time to Produce a Serious Burn
! WARNINGS:
120°F (49°C) 125°F (52°C)
More than 5 minutes 1 1/2 to 2 minutes
· IMPORTANT: DO NOT apply heat to the HOT or COLD water connections. If sweat
connections are used, sweat tubing to adapter before fitting adapter to the
water connections on heater. Any heat applied to the water supply fittings
will permanently damage the internal components of the water heater.
· In case the pipe insulation is not rated for the appropriate weather
conditions, install electric heat tracing or equivalent to prevent freezing of
the pipes. DO NOT insulate or block the drain valve on the hot outlet fitting.
If the pipes are allowed to freeze, the water heater and the pipes may
malfunction or leak due to freezing water.
130°F (54°C) 135°F (57°C) 140°F (60°C) 145°F (63°C) 150°F (66°C) 155°F (68°C)
Table courtesy of Shriners Burn Institute
About 30 seconds About 10 seconds Less than 5 seconds Less than 3 seconds About 1 1/2 seconds About 1 second
Temperature Conversion Chart °F/°C
100 102 104 106 108 110 112 °F
38 39 40 41 42 43 44 °C
· Failure to drain the water heater as described on Draining the Water Heater can cause serious personal injuries from scalding and/or damage the water heater.
114 116 118 120 125 130 140 °F 46 47 48 49 52 54 60 °C
4
Safety
IMPORTANT SAFETY INFORMATION
Natural Gas and Liquefied Petroleum Safety
! DANGERS:
· Never attempt to convert the water heater from one gas type to another. The
water heater should only use the fuel type in accordance with listing on data
plate–natural gas for natural gas units and LP for LP units. Any other fuel
usage will result in death or serious personal injury from fire and/or
explosion. This water heater is not certified for any other fuel type.
· Both natural gas and propane (LP) have an odorant added to aid in detecting
a gas leak. Some people may not physically be able to smell or recognize this
odorant. If you are unsure or unfamiliar with the smell of natural gas or LP,
ask the gas supplier. Other conditions, such as “odorant fade,” which causes
the odorant to diminish in intensity, can also hide or camouflage a gas leak.
· Water heaters using LP gas are different from natural gas models. A natural
gas water heater will not function safely on LP and vice versa.
· LP water heaters should not be installed below grade (for example, in a
basement) if such installation is prohibited by federal, state, and/or local
laws, rules, regulations, or customs.
· LP must be used with great caution. It is heavier than air and will collect
first in lower areas, making it hard to detect at nose level.
· Before attempting to light the water heater, make sure to look and smell for
gas leaks. Use a soapy solution to check all gas fittings and connections.
Bubbling at a connection indicates a leak that must be corrected. When
smelling to detect a gas leak, be sure to also sniff near the floor.
· Gas detectors are recommended in LP and natural gas applications and their
installation should be in accordance with the detector manufacturer’s
recommendations and/or local laws, rules, regulations, or customs.
· Combustible materials, such as clothing, cleaning materials, or flammable
liquids, must not be placed in the vicinity of the water heater.
· If a gas leak is present or suspected:
DO NOT attempt to find the cause yourself.
Never use an open flame to test for gas leaks. The gas can ignite resulting
in death, personal injury, or property damage.
Follow the steps listed under “What to Do If You Smell Gas” found on the
front cover of this manual.
! WARNINGS:
· The installation of gas piping must conform to
local utility company requirements and/or in the absence of local codes, use
the latest edition of National Fuel Gas Code (NFGC), ANSI Z223.1/ NFPA 54, or
CAN/CSA B149.1, Natural Gas and Propane Installation Code.
· If inlet gas pressure is out of allowable range [4.0″ w.c. (1.0kPa) 10.5″
w.c. (2.6kPa)] for Natural Gas, or [8.0″ w.c. (2.0kPa) 13.0″ w.c. (3.2kPa)]
for LP gas, a gas pressure regulator must be installed to maintain the
allowable inlet gas pressure.
· Should overheating occur or the gas supply fail to shut off, turn off the
manual gas control valve to the water heater.
! CAUTIONS:
· DO NOT attempt repair of electrical wiring, gas piping, remote control,
burners, vent connectors, or other safety devices. Refer repairs to qualified
service personnel.
· Turn off the manual gas shut-off valve if the water heater has been
subjected to overheating, fire, flood, physical damage, or if the gas supply
fails to shut off.
· DO NOT turn on the water heater unless the water and gas supplies are
completely opened.
NOTICE:
· The factory setting allows operating temperatures between 100°F (38°C) and
120°F (49°C). Only qualified service personnel should perform this adjustment.
Only factory-authorized remote control(s) should be used.
5
Safety
IMPORTANT SAFETY INFORMATION
Before operating this water heater, be sure to read and follow the
instructions on the label pictured below and all other labels on the water
heater, as well as the warnings printed in this manual. Failure to do so can
result in unsafe operation of the water heater, resulting in death, personal
injury, or property damage. Should you have any problems reading or following
the instructions in this manual, STOP and get help from a qualified service
technician.
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING : If you do not follow these instructions exactly, a fire or explosion
may result
causing property damage, personal injury or loss of life.
OPERATING INSTRUCTIONS
1.STOP! Read the safety information above on this label.
2.Turn off all electric power to the appliance. 3.Do not attempt to light the burner by hand.
GAS SHUTOFF VALVE
4.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the “OFF” position.
OPEN CLOSE
5.Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow “B” in
the safety information above on this label. If you don’t smell gas, go to the next step.
6.Turn the Gas Shutoff Valve located on the outside of the unit counterclockwise to
the “ON” position.
7.Turn on all electric power to the appliance.
8.If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance”
and call your service technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1.Turn off all electric power to the appliance if service is to be performed.
2.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to
the “OFF” position.
6
Safety
IMPORTANT SAFETY INFORMATION
Electrical Safety
! DANGER:
· Shock Hazard Make sure the electrical power to the water heater is off to
avoid electric shock that will result in death or serious personal injury.
! WARNINGS:
· For your safety, the information in this manual must be followed to minimize
the risk of fire, explosion, or electric shock that can result in death,
personal injury, and/or property damage.
· Field wiring connections and electrical grounding must comply with local
codes or, in the absence of local codes, with the latest edition of the
National Electrical Code, ANSI/ NFPA 70, or in Canada, Canadian Electrical
Code, CAN/CSA C22.1, Part 1.
! CAUTIONS:
· Label all wires prior to disconnecting for service. Wiring errors can cause
dangerous and improper operation. Verify correct operation after servicing.
· For your safety, burner inspection and cleaning should be performed only by
qualified service personnel.
· Make certain the power to the water heater is OFF before removing the unit
cover panel. Exposed electrical components and moving parts can cause personal
injuries.
· For your safety, DO NOT attempt repair of electrical wiring, gas piping,
remote control, burners, vent connectors, or other safety devices. Refer
repairs to qualified service personnel.
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California law requires that water heaters must be braced, anchored, or strapped to resist falling or horizontal displacement due to earthquake motions. For water heaters up to 52-gallon capacity, a brochure with generic earthquake bracing instructions can be obtained from: Office of the State Architect, 1102 Q Street, Suite 5100, Sacramento, CA 95814, or you may call 916-445-8100 or ask a water heater dealer.
However, applicable local codes shall govern installation. For residential water heaters of a capacity greater than 52 gallons or tankless-style, consult the local building jurisdiction code for acceptable bracing procedures.
7
IMPORTANT SAFETY INFORMATION
Safety
General Installation and Maintenance Safety
! WARNINGS:
· This water heater must be installed in accordance with these instructions,
local codes, utility company requirements and/or in the absence of local
codes, use the latest edition of the American National Standard/ National Fuel
Gas Code (NFGC), ANSI Z223.1 and National Fire Protection Association, NFPA
54, or in Canada, CAN/CSA B149.1, Natural Gas and Propane Installation Code,
and the latest edition of the National Electrical Code, ANSI/NFPA 70, or in
Canada, Canadian Electrical Code, CAN/CSA C22.1, Part 1.
· If local codes require the application of external insulation blanket kits,
carefully follow the manufacturer’s installation instructions included with
the kit. Only use blanket kits that are approved for use with your water
heater.
· For your safety, DO NOT attempt to disassemble this water heater for any
reason. Improper adjustments, alterations, service, or maintenance can cause
death, personal injury, or property damage.
SAFETY PRECAUTIONS:
· Read this manual entirely before installing and/ or operating the water
heater.
· Use this water heater only for its intended purpose as described in this Use
and Care Manual.
· Have the installer show you the location of the gas shut-off valve and how
to shut it off if necessary. Turn off the manual shut-off valve if the water
heater has been subjected to overheating, fire, flood, physical damage, or if
the gas supply fails to shut off.
· Be sure your water heater is properly installed in accordance with local
codes and the provided installation instructions.
· DO NOT attempt to repair or replace any part of your water heater unless it
is specifically recommended in this manual. All other servicing should be
referred to a qualified service technician.
SAVE THESE INSTRUCTIONS
PRODUCT INFORMATION
For Your Records
Write down and save the following product information along with the original
sales slip and/or cancelled check.The model and serial numbers can be found on
the top label on the right side of the water heater. MODEL NUMBER:
SERIAL NUMBER:
DATE OF INSTALLATION:
INSTALLING COMPANY/PHONE NUMBER:
PLUMBING CONTRACTOR/PHONE NUMBER:
See page 77 for additional service information.
Read This Manual
Inside you will find many helpful hints on how to use and maintain your water
heater properly A little preventive care on your part can save you time and
money over the life of your water heater You’ll find many answers to common
problems in the Troubleshooting Chart in this Use and Care Manual Always refer
to this chart before calling for service Referring to this chart before
calling may answer your question(s) and eliminate the need for service
Preoperating Checklist
Is the main gas valve to the water heater turned on?
Is the fuse in place or is the breaker turned on?
Does the water heater’s electronic ignition light?
Is the water temperature set to a safe temperature?
Is the water heater connected to a floor drain?
Is the water heater properly vented to the outside?
Is the water heater installed in a safe location away from flammable materials
and/or freezing conditions?
8
Product Information
PRODUCT INFORMATION
Specifications Direct-Vent Models
Product Information
1.925 in (49 mm) 2.551 in (65 mm) 4.209 in (107 mm) 7.197 in (183 mm)
27.520 in 24.213 in (699 mm) (615 mm)
5.661 in (144 mm) 1.957 in (50 mm)
1.555 in (39 mm)
6.831 in (174 mm)
13.504 in (343 mm)
1.803 in (46 mm)
10.268 in (261 mm)
7.531 in (191 mm) 6.508 in (165 mm) 5.563 in (141 mm)
3.177 in (81 mm)
0
2.957 in (75 mm)
Specifications Outdoor Models
13.504 in (343 mm)
APPROVED
0 1.634 in (42 mm) 8.374 in (213 mm) 12.106 in (307 mm) 13.661 in (347 mm)
8.594 in (218 mm) 5.465 in (139 mm) 3.945 in (100 mm)
9.441 in (240 mm)
20.748 in (527 mm)
1.555 in (39 mm)
22.732 in (577 mm)
9.441 in (240 mm)
7.492 in (190 mm) 6.429 in (163 mm)
4.362 in (111 mm) 2.843 in (72 mm) 2.075 in (53 mm)
0
0 1.634 in (42 mm) 1.925 in (49 mm) 2.551 in (65 mm) 4.209 in (107 mm) 7.197 in (183 mm) 8.374 in (213 mm) 12.106 in (307 mm) 13.661 in (347 mm)
9
PRODUCT INFORMATION
Specifications
The following product information can be found from the rating label on this
water heater: A Model Number B Serial Number C Data Bar Code D Heater Type E
Installation Type F Type of Gas G Max Inlet Gas Pressure H Min Inlet Gas
Pressure J Recovery Rating K Max BTU Input Rating L Min BTU Input Rating M
Manifold Gas Pressure N Certification Stamp P Alternate Approval Stamp Q
Clearances
Indoor
Rating Label Outdoor
Product Information
10
PRODUCT INFORMATION
The graphic below illustrates the pressure drop across the water heater. Please ensure ample water supply pressure is available to ensure the best performance.
Water Flow Rate (GPM)
Water Heater Flow Rate Curves
10
9
8
7
6
5
4
3
RTG-95DVL-3
RTG-84DVL-3 2
RTG-70DVL-3
1
0
0
10
20
30
40
50
60
70
80
90
100
110
Delta T – Temperature Rise (°F)
Product Information
Pressure Drop (PSI)
Pressure Drop Curve
35
80
Pressure Drop ( of head)
70 30
60 25
50 20
40 15
30
10 20
5 10
0
0
0
1
2
3
4
5
6
7
8
9
Water Flow Rate (GPM)
11
PRODUCT INFORMATION
General Descriptions
Typical Direct-Vent Water Heater (Venting Required)
Condensate Collector
Product Information
Power Supply Cord
To Hot Water Faucet(s)
Union
Relief Valve
Service Valve
Drain Valve
12
To Suitable
Drain
To Drain: Dispose of condensate in accordance
with local codes.
Built-In Display
Water Filter
Manual Gas Shut-Off Valve Union
Sediment Trap Cold Water Supply
Shut-Off Valve Cap
Manual Gas Supply Line Shut-Off Valve
PRODUCT INFORMATION
Typical Outdoor Water Heater (No Venting Required)
This water heater is for OUTDOOR installation only.
! DANGER:
DO NOT install this water heater indoors or in a confined area. It is designed
for outdoor installation only. Any other type of installation will result in
death or serious personal injury.
Flue Terminal
Remote Control With Power Switch
(Installed Indoor)
Product Information
Power Supply Cord
To Hot Water Faucet(s)
Drain Valve
Air Inlet
Union
Relief Valve
Relief Valve
Service Valve
To Suitable
Drain
Water Filter
Manual Gas Shut-Off Valve Union
WiFi Control & Harness (included on some models)
Manual Gas Supply Line Shut-Off Valve
Sediment Trap
Cap Cold Water Supply
Shut-Off Valve
13
INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR
General
INSTALLATION INSTRUCTIONS
Standards Compliance
This water heater must be installed in accordance with these instructions,
local codes, and utility company requirements.
In the United States where local codes are not available, use the latest
edition of the American National Standard/National Fuel Gas Code. A copy of
the Fuel Gas Code can be purchased from either the American Gas Association,
400 North Capitol Street Northwest, Washington, DC
Choosing a Location
WARNING:
Fire Hazard Combustible construction refers to adjacent walls and ceilings
and should not be confused with combustible or flammable products and
materials. Combustible materials, such as clothing, cleaning materials, or
flammable liquids, must not be placed against or next to the water heater.
Fire or explosion could occur causing death, personal injury, and/or product
damage. A gas-fired water heater should never be installed in a space or room
where liquids with flammable vapors are used or stored. Such liquids include
gasoline, LP gas (butane or propane), paint, adhesives and their thinners,
solvents, or removers. Flammable vapors carry long distances from where they
are used or stored. The open flame of the water heater’s main burner can
ignite these vapors causing an explosion or fire.
NOTICE:
Elevating a gas-fired water heater will reduce but NOT eliminate the
possibility of lighting the vapor of flammable liquids which may be improperly
stored or accidentally spilled.
NOTICE:
DO NOT connect power until venting installation is complete. See “Venting.”
20001, as ANSI standard Z223.1, or National Fire Protection Association, 1
Batterymarch Park, MA 02269 as NFPA 54.
In Canada, use the latest edition of the CAN/ CSA B149.1 Natural Gas and
Propane Installation Code and the Canadian Electrical Code, CAN/CSA C22.1,
Part 1.
NOTICE:
This water heater should not be located in an area where leakage of the heat
exchanger or connections will result in damage to the area adjacent to it or
to lower floors of the structures. When such areas cannot be avoided, install
a suitable catch pan with an adequate drain under the water heater. This drain
pan must not restrict the combustion airflow. The following requirements will
ensure a safe installation: The water heater must be located in an area where
it won’t sustain damage from moving vehicles, flooding, etc. If the water
heater is installed in a storage garage, the direct ignition system and main
burner should be no less than 18 in. (45 cm) above the garage floor. If the
water heater is installed in a repair garage or in a private garage, the
direct ignition system and main burner should be no less than 4.5 ft. (1400
mm) above the garage floor. The water heater should be installed as close as
possible to the vent termination. This minimizes the vent length and the
number of elbows and joints required for venting. The water heater should be
installed with the proper venting and exhaust materials suitable for Category
III venting.
0″ min. (0 mm)
Coaxial Vent Pipe and Air Intake
0″ min. (0 mm)
0″ min. (0 mm)
15
INSTALLATION INSTRUCTIONS
General
Choosing a Location
Fire Stop Plate (as required)
Every vent pipe penetration of a floor or ceiling that is not in a fire-rated
shaft requires a fire stop plate. Failure to install and properly vent the
water heater to the outdoors as outlined on “Venting” can result in unsafe
operation.
Long hot water lines should be insulated to conserve water and energy. The
water heater and water lines should be protected from exposure to freezing
temperatures.
12″ min. (300 mm)
1/2″ min. (13 mm)
12″ min. (300 mm)
0″ min. (0 mm)
1/2″ min. (13 mm)
Minimum water heater clearances from combustible and noncombustible
construction are as follows: 1/2 in. (1.3 cm) for sides and front 0 in. (0
cm) for rear with support bracket(s) 12 in. (30 cm) from the bottom and top
NOTICE:
Preferred maintenance clearance is 24 in. (61 cm) from top, bottom, and front
of unit.
0″ min. (0 mm)
· DO NOT install the water heater in areas prohibited by National Fuel Gas
Code in US installation or CAN/CSA B1491 in Canada installation
· DO NOT install the water heater where it is subject to vibrations
Minimum clearance around the coaxial vent pipe should meet the specifications listed on the instruction/warning label on the water heater If no label is found, use the vent manufacturer’s specifications or a minimum clearance of 0 in (0 cm) around the vent pipe
· DO NOT install the water heater in a recreational vehicle, boat, or other
watercraft
· DO NOT install the water heater near vents for heating and cooling If
necessary, maintain a minimum clearance of 4 ft (12 m)
16
INSTALLATION INSTRUCTIONS
Product Inspection
Visually inspect the water heater for any possible damage.
Check the rating plate on the water heater to make sure the water heater was
designed to be used
with the supplied type of gas (natural or LP).
Verify that all included supplied parts are present as shown.
General
WiFi Display / Wall Mount (outdoor models only)
Screws Washers Remote Control Cable
Mounting Stays
Pressure Relief Valve (Some models only)
Water Heater Installation
Corrosive Atmosphere
NOTICE:
The water heater should not be installed near an air supply containing
halogenated hydrocarbons. Avoid installing a water heater in any of the
following locations: beauty shops, dry-cleaning establishments, photo
processing labs, and storage areas for liquid and powdered bleaches or
swimming pool chemicals These locations often contain such halogenated
hydrocarbons
The air supply containing halogenated hydrocarbons is safe to breathe, but
when passed through a gas flame,
corrosive elements are released that will shorten the life of any gas-burning
appliance Propellants from common spray cans or gas leaks from A/C and
refrigeration equipment are highly corrosive after passing through a flame
NOTICE:
The water heater warranty is void when the failure is due to operation in
corrosive conditions.
17
General
INSTALLATION INSTRUCTIONS
Water Heater Installation
NOTICE:
The National Fuel Gas Code (NFGC) and CAN/CSA B149.1 mandate a manual gas
shut-off valve. See NFGC/B149.1 for complete instructions. Local codes or
plumbing authority requirements may vary from the instructions or diagrams
provided and take precedence over these instructions.
Typical Installation of Direct-Vent Water Heater (Venting Required)
90° Elbow
1/4″ Per Foot Downward Slope (recommended)
Wall Plate
Built In Condensate Collector
Vent Termination With Protective
Screen
18
Power Supply Cord
Water Filter
Condensate Trap
To Drain: Dispose of condensate in accordance to local codes.
To Hot Water Faucet(s)
Drain Valve
Union
Relief Valve
Service Valve
6″(150 mm) Air Gap
Discharge Line (To Suitable Drain)
Manual Gas Shut-Off Valve
Manual Gas Supply Line Shut-Off Valve
Sediment Trap
Union
Cap
Cold Water Supply Shut-Off Valve
Outside Wall
General
INSTALLATION INSTRUCTIONS
Water Heater Installation
Typical Installation of Outdoor Water Heater (No Venting Required)
This water heater is for OUTDOOR installation only.
! WARNING:
DO NOT install this water heater indoors or in a confined area. It is designed
for outdoor installation only. Any other type of installation can result in
death, personal injury, and/or damage to the product or property.
Flue Terminal
HardWire
Air Inlet
To Hot Water Faucet(s)
Relief Valve
Relief Valve
Water Filter
Manual Gas Shut-Off Valve
(Supplied) Union
Union
Service Valve
Sediment Trap Cap
Drain Valve
Cold Water Supply Shut-Off Valve
6″ (150 mm) Air Gap
Discharge Line (To Suitable Drain)
Alternate Water Piping Arrangement With Preferred Valve Kit
A valve kit is available and can be used with all models See “Water Supply
Connections” on page 35 for installation instructions
Relief Valve Drain
Hot Water Service Valve
Water Outlet
Manual Gas Supply Line Shut-Off Valve
Cold Water Service Valve Water Inlet
19
General
INSTALLATION INSTRUCTIONS
Mounting the Water Heater
! CAUTION
Reinforcement of the wall is required in case the wall is not strong enough to
hold the water heater. Failure to do so could result in personal injury and/
or product or property damage.
The mounting location for the water heater should allow for easy access and
operation
NOTICE:
The image above may differ in appearance from your water heater.
1
The water heater is designed to be installed either inside the wall cavity,
between the wall studs, or outside the wall cavity Either installation
requires the water heater to be supported with a wooden support brace between
the wall studs or a piece of wood that is equal in size to the water heater
and securely attached to the wall studs before the water heater is attached to
it This piece of wood can be installed inside or outside the wall Use wood
screws to secure brackets to the wall If mounting to a concrete wall, use lag
bolts designed for concrete
4
Using two mounting screws and washers, secure the lower mounting bracket to
the wall Then, secure the upper mounting bracket to the wall with two mounting
screws and washers
3/8″- 1 1/2″ min. (9.5 – 30mm)
2
Make sure the proper electrical outlet or supply (120 VAC/60 Hz) is available
and located near the unit Directvent models come with a 6-ft (18-m) power
cord, while the outdoor models require hard-wiring or the addition of a plug
5
Position the water heater and tighten the adjustment screws to complete the
installation The rear of the water heater can be positioned anywhere between
3/8 in (095 cm) and 1 1/2 in (38 cm) from the wall (indoor model only)
3
Position the upper mounting bracket and partially install the center mounting
screw The clearance between the screw head and the wall should be about 1/8 in
(03 cm) Hang the upper bracket on the screw
6
“If additional clearance is needed to the back wall in order to to attach
venting, utilize the mounting stays included with the heater Attach the stays
to the heater mounting brackets using the included screws, then follow the
above steps to attach the heater to the wall The mounting stays add 1 3/16in
(3cm) of clearance
20
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
The water heater must be installed with 3-in/5-in (76-cm/127-cm) diameter UL-
approved Category III Coaxial Stainless Steel appliance vent pipe or water
heater manufacturer-approved concentric vent pipe
! DANGER:
Failure to install and properly vent the water heater to the outdoors as
outlined in this Venting section will result in death or serious personal
injury. To avoid the risk of fire, explosion, or asphyxiation from carbon
monoxide, NEVER operate the water heater unless it is properly vented and has
adequate air supply for proper operation as outlined in this Venting section.
! WARNINGS:
· Use 3-in./5-in. (7.6-cm/12.7-cm) UL-approved Category III Stainless Steel
vent materials or water heater manufacturer-approved vent material. No other
vent material is permitted for use with this appliance.
· Refer to page 16 for required clearances to combustible materials. Improper
clearances can cause explosion or fire resulting in death, personal injury,
and/or product damage.
Venting Requirements
The installation of venting must comply with national codes, local codes, and
the vent manufacturer’s instructions
The water heater must be vented to the outdoors as described in these
instructions DO NOT vent this water heater through a chimney It must be vented
separately from all other appliances
This water heater requires a special venting system Refer to venting
supplier’s instruction for complete parts list and method of installation The
manufacturers and product lines listed on the following tables have been
tested and authorized to safely operate with Rheem tankless water heater
Supplier of stainless steel venting that are not listed on the following table
is not permitted for use Category III products with Rheem tankless water
heater
! WARNING:
DO NOT mix venting suppliers and models in venting systems. Failure to comply
could result in personal injury, property damage, or death
Installations must comply with applicable national, state, and local codes
Allowable Stainless Steel Vent Supplier and Part Numbers Example of Components Metal Fab
Pipe
*3CGVxx, 3CGxx
90 Degree Elbow
3CGV90L, 3CG90L
45 Degree Elbow
3CGV45L, 3CG45L
Adjustable Vent Length 3GVL22, 3CGVVAL20
Vertical Cap Termination 3CGVPVT, 3CGPVT
Appliance Adapter
3CGVVPA, 3CGVPA
Condensate Drain
3CGVVDS, 3CGVDS
Horizontal Termination
3CGVPHT, 3CGPHT, 3CGVPHT3, 3CGVPHT4
*: xx refer to length of pipe
! CAUTION:
DO NOT attempt to fabricate or adapt other vent pipe or materials to this
venting.
Use the provided screws to connect the coaxial vent pipe together
Follow the vent manufacturer’s installation instructions
This water heater can be vented horizontally or vertically All coaxial vent
piping runs must be adequately supported The maximum recommended unsupported
span should be no more than 4 ft (12 m) Only use support isolation hanging
bands DO NOT use wire to support pipe runs
Preexisting Venting Notes:
If the water heater is being installed as a replacement for an existing water
heater, a thorough inspection of the existing venting and air intake system
must be performed prior to any installation work. Verify that the correct
materials, vent lengths, and terminal locations as described in this manual
have been met. Carefully inspect the entire venting and air intake system for
any signs of cracks or fractures, particularly at the joints between elbows or
other fittings and the straight runs of vent pipe. Check the system for signs
of sagging or other stresses in the joints as a result of misalignment of any
components in the system. If any of these conditions are found, they must be
corrected in accordance with the venting instructions in this manual before
completing the installation and putting the water heater into service.
See page 26 for additional requirements for the Commonwealth of Massachusetts
21
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Vent Lengths
Before starting the vent installation, careful planning should be given to the
routing and termination of the vent pipes. The length of the vent pipes (inlet
and outlet) should be kept to a minimum. Also, see pages 27,28, and 29 for
vent terminal placement. Refer to the maximum and minimum vent length charts
for the pipe sizes that can be used and the total equivalent length of pipe
that can be used. DO NOT exceed equivalent length of pipe in maximum vent
length chart.
DO NOT USE Schedule 20, Cell Core, Drain Pipe, Galvanized, Aluminum or B-Vent.
SINGLE UNIT: MAX. EQUIVALENT VENT LENGTHS – STRAIGHT PIPE
Number of 90° ELbows
Max Length 3″/5″ Straight Pipe
0
43 ft. (13.1 m)
1
41.5 ft. (12.6 m)
2
38.5 ft. (12.2 m)
3
34 ft. (11.7 m)
4
28 ft. (11.3 m)
5
20.5 ft. (10.8 m)
6
11.5 ft. (10.4 m)
EQUIVALENT FT. OF ELBOWS
3″ / 5”
90°
1.6 ft.
45°
9 in.
The vent termination is not included in the equivalency calculations.
NOTICE: A 90 degree standard bend concentric elbow is equivalent to 1 ft, 6 in. A 45 degree standard bend concentric elbow is equivalent to 9 in.
22
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
High-Altitude DIP Switch Adjustments
When the water heater is installed above 2000 ft. (610 m), the settings on the DIP switch located on the control board need to be changed per vent length and altitude. If these settings are not changed, the water heater may not function properly.
SECTION Sea Level (A Setting)
B Setting C Setting
HIGH-ALTITUDE 0-2000 ft (0 m – 610 m) 2001 ft – 5400 ft (610 m – 1650 m) 5401 ft – 7800 ft (1650 m – 2377 m)
1
Verify the altitude that the water heater is installed. Turn off the gas and
water to the water heater by closing the shut-off valves.
ON
ON
DIP Switch 2
DIP Switch 1
“MAX” button
1234
1234
“MIN” button
“ADJUST” button
4
The factory settings for this switch should all be in the OFF position (DOWN).
NOTICE:
DO NOT alter any other DIP switch settings. The manifold pressure will be
reduced accordingly.
For altitudes above 2000 ft. (610 m), refer to the table below for the
necessary DIP switch settings. These setting must be changed to ensure proper
operation.
Identify Vent Length
ALL VENT LENGTHS
IDENTIFY ALTITUDE
0 – 2,000 ft
2,001 – 5,400 ft
Setting
Dip
Setting
Dip
5,400 – 7,800 ft
Setting
Dip
All Vent Lengths
A (Factory Setting)
ON
ON
1234
1234
ON
ON
ON
ON
B
C
1234
1234
1234
1234
2
Remove the front cover panel on the water heater.
5
Replace the front cover panel.
DIP Switch Control Board
3
Find DIP Switch 2 located in the top-right portion of the control board. The
switch labeled “DIP 2″ is the bottom switch.
6
Turn on the gas and water to the water heater by opening the shut-off valves.
WARNING:
This water heater requires the correct DIP switch adjustments per vent length
and altitude for proper operation. Incorrect DIP switch adjustments may cause
improper water heater operation resulting in serious injury or death.
23
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
1/4” Per Foot Downward Slope (recommended)
90° Elbow
Vent Pipe
Wall Plate
Fire
Inspection
Stop Access Panel
(Optional)
Ceiling
Inspection Access Panel
(Optional)
NOTICE:
It is recommend to have a vent length as short as possible. Input rate at high
altitude naturally is derated. In addition to that, input rate of the water
heater decreases more if there is restriction (pressure drop) in the venting
system. Refer to input rate reduction table due to vent length on page 24.
Actual input rate reduction may be different at each installation.
Vent Seam
NOTICE:
Make sure that the seam of the inner vent pipe in a horizontal run is towards
the top of the installation as shown above.
Venting Through Closed Spaces
If the coaxial vent piping passes through a closed space, a minimum clearance
of 0 in. (0 cm) for vertical piping and for horizontal piping should be
maintained between the coaxial vent pipe and combustibles and non
combustibles. Be sure to follow local codes and vent manufacturer’s
installation instructions. For maintenance and inspection purposes, the
following access panels may be required.
Two (2) inspection access panels large enough to allow access for venting
inspection. One access panel may be close to where the coaxial vent pipe
enters the ceiling. The other access panel may be near the vent termination.
It is recommend to have a vent length as short as possible. Input rate of the
water heater decreases if there ir restriction (pressure drop) in the venting
system.
The following table shows approximate input rate reduction. Actual input rate
reduction may be different at each installation.
This table will only apply to the indoor models.
Setting Min Vent Length Max Vent Length
A-1
0%
10%
24
INSTALLATION INSTRUCTIONS
Venting
Venting for Direct-Vent Water Heater
Appliance Vent Adapter
! CAUTION:
Ensure that the appliance vent adapter is securely attached to the water
heater collar. Improperly connected vent adapter can cause damage to the
appliance and/or poor performance.
Metal Fab Inc, Rainbow, and Ubbink standard concentric vent pipe can be
installed into the water heater collar without an appliance vent adapter
NOTICE:
To install the appliance vent adapter, please follow the appliance vent
adapter manufacturer’s instructions.
Draining Vent Condensate
! WARNINGS:
Failure to provide a vent condensate drain close to the water heater could
allow acidic flue gas condensate to enter into water heater flueways, causing
premature failure of the water heater.
If the condensate collector is not used, the drain fitting must be capped to
prevent exhaust gases and condensate from entering the building The cap is
supplied on the water heater
! CAUTIONS:
Condensate is known to be acidic; refer to federal, state (provincial), and
local codes for proper handling and discharge methods.
Condensate must be drained away from the water heater and should not be
allowed to drain back into any part of the vent system.
The condensate collector must be used with vertical vent installation.
Condensate collector must be used with horizontal vent installation if the
vent has an UPWARD slope toward the termination.
Provision should be made to collect and dispose of condensate from the venting
systems.
Downward Slope (recommended)
When a water heater is vented horizontally, the vent pipe should have a
DOWNWARD or UPWARD slope towards the termination. If an UPWARD slope is used,
always attach a drain hose to the condensate collector and plumb the hose to a
sanitary sewer drain.
Upward Slope
When a water heater is vented vertically, an UPWARD slope must always be used.
Always attach a drain hose to the condensate collector and plumb the hose to a
sanitary sewer drain. Properly installed condensate traps prevent the
condensate from draining back into the water heater. A high-temperature
silicone tubing suitable for use with acidic condensate and appropriate for
the temperature range should be used.
Condensate Collector
Condensate Trap
The drain tube is fashioned into a “pigtail” trap and must be filled with
water to prevent flue gases from emitting into the building prior to operating
the water heater.
25
INSTALLATION INSTRUCTIONS
Venting
Venting for Direct-Vent Water Heater
In the Commonwealth of Massachusetts
The Commonwealth of Massachusetts requires compliance with regulation 248 CMR
400 and 500 for installation of throughthe-wall vented gas appliances as
follows:
508: Modifications to NFPA54, Chapter 10
(1) Revise NFPA54 section 10542 by adding a second exception as follows:
Existing chimneys shall be permitted to have their use continued when a gas
conversion burner is installed, and shall be equipped with a manual reset
device that will automatically shut off the gas to the burner in the event of
a sustained backdraft
(2) Revise 1083 by adding the following additional requirements:
(a) For all side-wall, horizontally vented, gas-fueled equipment installed in
every dwelling, building, or structure used in whole or part for residential
purposes, including those owned or operated by the Commonwealth and where the
side-wall exhaust vent termination is less than seven (7) feet above finished
grade in the area of the venting, including but not limited to decks and
porches, the following requirements shall be satisfied
1 INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the
side-wall, horizontally vented, gas-fueled equipment, the installing plumber
or gasfitter shall observe that a hard-wired carbon monoxide detector with an
alarm and battery backup is installed on the floor level where the gas
equipment is to be installed In addition, the installing plumber or gasfitter
shall observe that a battery-operated or hard-wired carbon monoxide detector
with an alarm is installed on each additional level of the dwelling, building,
or structure served by the side-wall, horizontally vented, gas-fueled
equipment It shall be the responsibility of the property owner to secure the
services of qualified licensed professionals for the installation of hard-
wired carbon monoxide detectors
a In the event that the side-wall, horizontally vented, gas-fueled equipment
is installed in a crawl space or an attic, the hardwired carbon monoxide
detector with alarm and battery backup may be installed on the next adjacent
floor level
b In the event that the requirements of this subdivision cannot be met at the
time of completion of installation, the owner shall have a period of thirty
(30) days to comply with the above requirements, provided, however, that
during said thirty (30) day period, a battery-operated carbon monoxide
detector with an alarm shall be installed
2 APPROVED CARBON MONOXIDE DETECTORS Each carbon monoxide detector as required
in accordance with the above provisions shall comply with NFPA 720 and be
ANSI/UL 2034-listed and IAS-certified
3 SIGNAGE A metal or plastic identification plate shall be permanently mounted
to the exterior of the building at a minimum height of eight (8) feet above
grade directly in line with the exhaust vent terminal for the horizontally
vented, gasfueled heating appliance or equipment The sign shall read, in print
size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW KEEP
CLEAR OF ALL OBSTRUCTIONS”
4 INSPECTION The state or local gas inspector of the sidewall, horizontally
vented, gas-fueled equipment shall not approve the installation unless, upon
inspection, the inspector observes carbon monoxide detectors and signage
installed in accordance with the provisions of 248 CMR 508 (2)(a)(1 through 4)
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 508 (2)(a)(1
through 4):
1 The equipment listed in Chapter 10 entitled “Equipment Not Required To Be
Vented” in the most current edition of NFPA 54 as adopted by the Board, and
2 Product-approved side-wall, horizontally vented, gas-fueled equipment
installed in a room or structure separate from the dwelling, building, or
structure used in whole or in part for residential purposes
(c) MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM PROVIDED When the
manufacturer of product-approved side-wall, horizontally vented, gas-fueled
equipment provides a venting system design or venting system components with
the equipment, the instructions provided by the manufacturer for installation
of the equipment and the venting system shall include:
1 Detailed instructions for the installation of the venting system design or
the venting system components; and
2 A complete parts list for the venting system design or venting system
(d) MANUFACTURER REQUIREMENTS GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED When
the manufacturer of product-approved side-wall, horizontally vented, gas-
fueled equipment does not provide the parts for venting the flue gases, but
identifies “special venting systems,” the following requirements shall be
satisfied by the manufacturer:
1 The referenced “special venting systems” instructions shall be included with
the appliance or equipment installation instructions, and
2 The “special venting systems” shall be product-approved by the Board, and
the instructions for that system shall include a parts list and detailed
installation instructions
(e) A copy of all installation instructions for all productapproved side-wall,
horizontally vented, gas-fueled equipment, all venting instructions, all parts
lists for venting instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion of the installation
NOTE: For the State of Massachusetts, use only plastic piping, fittings and
vent terminations as specified in this manual which are approved by the
Massachusetts Board of State Examiners of Plumbers and Gas for venting of
appliances (see hyperlink below):
https://licensing.reg.state.ma.us/pubLic/pl_products/ pb_pre_form.asp”
26
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Horizontal Vent Terminal Location for Other than Direct Vent/Outdoor Heater
Inside corner detail
Venting
15 ft
Fixed closed
Operable
Fixed Operable closed
Regulator vent outlet in the event no regulator is present, H and I can be disregarded.
V VENT TERMINAL X AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
Canadian Installations 1
A= Clearance above grade, veranda, porch, deck or balcony.
12 inches (30 cm)
B= Clearance to window or door that may be opened.
· 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30 cm) for appliances > 10,000 Btuh (3 kW) and 100,000 Btuh (30 kW), · 36 in (91 cm) for appliances > 100,000 Btuh (30 kW)
C= Clearance to permanently closed window.
0 in (0 cm)
D= Vertical Clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet (61 cm) from the center line of the terminal.
12 in (30 cm)
E= Clearance to unventilated soffit.
12 in (30 cm)
F= Clearance to outside corner.
24 in (61 cm)
G= Clearance to inside corner.
18 in (46 cm)
H = Clearance to each side of center line extended meter/regulator assembly. above
3 feet (91 cm) within a height 15 feet (4.6 m)
I = Clearance to service regulator vent outlet.
3 feet (91 cm)
J = Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance..
· 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30 cm) for appliances > 10,000 Btuh (3 kW) and 100,000 Btuh (30 kW), · 36 in (91 cm) for appliances > 100,000 Btuh (30 kW)
US Installations 2
12 inches (30 cm)
4 ft (1.2) below or to side of opening; 1 ft (300 mm) above opening.
0 in (0 cm)
12 in (30 cm)
12 in (30 cm) 24 in (61 cm) 18 in (46 cm) 3 ft (91 cm) within a height of 15
ft (4.6 m) 3 feet (91 cm)
4 ft (1.2) below or to side of opening; 1 ft (300 mm) above opening.
K = Clearance to mechanical air supply inlet.
6 feet (1.83 m)
3 feet (91 cm) above if within 10 feet (3 m) horizontally.
L = Clearance above paved side walk or paved driveway located on public property.
7 feet (2.13 m)
7 feet (2.13 m) for mechanical draft systems (Category I appliances); vents
for Category II and IV appliances cannot be located above public walkways or
other areas where condensate or
vapor can cause a nuisance or hazard.
M = Clearance under veranda, porch, deck or balcony.
12 in (30 cm)
12 in (30 cm)
1 In accordance with the current CSA B149.1 Natural Gas and Propane
Installation Code 2 In accordance with the current ANSI Z223.1/ NFPA 54
National Fuel Gas Code Permitted only if veranda, porch, deck, or balcony is
fully open on a minimum of two sides beneath the floor.
27
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Horizontal Vent Terminal Location for Direct-Vent Water Heater
Inside corner detail
Venting
15 ft
Fixed closed
Operable
Fixed Operable closed
Regulator vent outlet in the event no regulator is present, H and I can be disregarded.
V VENT TERMINAL X AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
Canadian Installations 1
US Installations 2
A= Clearance above grade, veranda, porch, deck or balcony.
12 inches (30 cm)
B= Clearance to window or door that may be opened.
· 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30 cm) for appliances > 10,000 Btuh (3 kW) and 100,000 Btuh (30 kW), · 36 in (91 cm) for appliances > 100,000 Btuh (30 kW)
C= Clearance to permanently closed window.
0 in (0 cm)
D= Vertical Clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet (61 cm) from the center line of the terminal.
12 in (30 cm)
E= Clearance to unventilated soffit.
12 in (30 cm)
F= Clearance to outside corner.
24 in (61 cm)
G= Clearance to inside corner.
18 in (46 cm)
H = Clearance to each side of center line extended meter/regulator assembly. above
3 feet (91 cm) within a height 15 feet (4.6 m)
I = Clearance to service regulator vent outlet.
3 feet (91 cm)
J = Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance..
· 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30 cm) for appliances > 10,000 Btuh (3 kW) and 100,000 Btuh (30 kW), · 36 in (91 cm) for appliances > 100,000 Btuh (30 kW)
12 inches (30 cm)
· 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30 cm) for
appliances > 10,000 Btuh (3 kW) and 50,000 Btuh (15 kW), · 12 in (30 cm) for
appliances > 50,000 Btuh (15 kW)
0 in (0 cm)
12 in (30 cm)
12 in (30 cm) 24 in (61 cm) 18 in (46 cm)
3 ft (91 cm) within a height of 15 ft (4.6 m)
3 feet (91 cm) · 6 in (15 cm) for appliances 10,000 Btuh (3 kW), · 12 in (30
cm) for appliances > 10,000 Btuh (3 kW) and 50,000 Btuh (15 kW), · 12 in (30
cm) for appliances > 50,000 Btuh (15 kW)
K = Clearance to mechanical air supply inlet.
L = Clearance above paved side walk or paved driveway located on public
property.
M = Clearance under veranda, porch, deck or balcony.
6 feet (1.83 m) 7 feet (2.13 m)
12 in (30 cm)
3 feet (91 cm) above if within 10 feet (3 m) horizontally.
7 feet (2.13 m) for mechanical draft systems (Category I appliances); vents
for Category II and IV appliances cannot be located above public walkways or
other areas where condensate or
vapor can cause a nuisance or hazard.
12 in (30 cm)
1 In accordance with the current CSA B149.1 Natural Gas and Propane
Installation Code 2 In accordance with the current ANSI Z223.1/ NFPA 54
National Fuel Gas Code Permitted only if veranda, porch, deck, or balcony is
fully open on a minimum of two sides beneath the floor.
28
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater (cont.)
Horizontal Vent Considerations
! WARNING:
Moisture in the flue gas will condense as it leaves the vent terminal. In cold
weather this condensate can freeze on the exterior wall, under the eaves, and
on surrounding objects. Some discoloration to the exterior of the building is
to be expected. However, improper location or installation can result in
severe damage to the structure or exterior finish of the building.
DO NOT locate vent terminal on the side of
a building with prevailing winter winds. This will help prevent water lines
from freezing and moisture from freezing on walls and under eaves.
DO NOT locate vent terminal too close to
shrubbery, since flue gases may damage them.
All painted surfaces should be primed to
lessen the chance of physical damage. Painted surfaces will require
maintenance.
Guard against accidental contact with people
and pets.
Indoor Tankless Water Heaters
! WARNING:
For multiple-unit installation, a minimum distance between vent terminations
must be maintained to prevent recirculation of vent gases. Maintain a
horizontal center-to-center distance between vent terminations of 19 in. (48
cm) for two-unit installation, or 21 in. (53 cm) for installation of three or
more units*.
Inside Corner
Caulk
Caulk Rising moisture will collect under eaves.
If soffit vent is too close, block off and install new vent at another
location.
6′ (1.8 m) Caulk zone or to edge of window etc., starting within 6′ (1.8 m)
Caulk Caulk
4′ (1.2 m)
Sheet metal plate on brick or masonry surface recommended.
DO NOT terminate vent directly on brick or
masonry surfaces. A rust-resistant, sheetmetal backing plate is recommended
behind the vent.
Caulk all cracks, seams, and joints within
6 ft. (1.8 m) of the vent terminal.
Caulk around wall faceplate for weather-tight
seal.
DO NOT extend exposed vent pipe of indoor
water heaters outside of the building.
This water heater requires its own separate
venting system. DO NOT connect the exhaust vent to an existing vent pipe or
chimney.
Inside Corner
Caulk
Caulk Rising moisture will collect under eaves.
If soffit vent is too close, block off and install new vent at another
location.
6′ (1.8 m) Caulk zone or to edge of window etc., starting within 6′ (1.8 m)
Caulk
minimum 19 in (48cm)
4′ (1.2 m)
12″ (300 mm)
Install indoor and outdoor water heaters such that air inlet and flue outlet are above anticipated snow level
minimum 21 in (53cm) *Vents cannot be stacked vertically.
29
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Horizontal Vent Installation
! WARNING:
Follow the vent manufacturer’s installation instructions since design might
vary from manufacturer to manufacturer. Improper vent installation can result
in death, personal injury, product damage, and/or poor performance.
! CAUTION:
Use UL-approved Category III Stainless Steel vent material only. No other vent
material is permitted for use with this appliance.
Outer casing can be galvanized aluminum or other material
Fasteners will vary depending on the wall type
For particle board or composite sheathing, use 4 hollow wall anchors. The
anchors should be at least 1/8 in. (0.3 cm) in diameter and the appropriate
length for the sheathing thickness.
1
Apply high temperature silicone sealant or silicone/ latex caulk around the
vent section. Completely seal where it passes through the wall plate and where
it is attached to the structure. This will provide a weather seal for the
system, so it must be a good seal.
For plywood or solid wood sheathing or members, use 4 #10 x 1 1/4-in. wood
screws.
For masonry walls, use suitable masonry anchors long enough to pass through
the wall.
Reinstall the decorative sheathing around the faceplate. The decorative
sheathing may be painted to match the exterior decor.
2
Attach the female end of the next vent pipe section to the male end of the
3-in./5-in. (7.6-cm/12.7-cm) concentric vent pipe. Push firmly on the pipe
until the outer jacket has made contact with the snap ring on the male end of
the concentric vent pipe section. Secure the two pipe sections with the
provided self-tapping screws.
NOTICE:
When fully assembled, the outer female end will overlap the male end about 1
in. (2.5 cm).
DO NOT attempt to fabricate or adapt other vent pipe or materials to this
venting.
30
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Horizontal Vent Installation (cont.)
Using a thick bead of high temperature silicone, seal the overlapping area of
the outer 5-in. (12.7cm) pipe.
Typical Horizontal Termination with 1/4 In. Per Foot of DOWNWARD Slope
1/4″ Per Foot Downward Slope
3
Attach required vent sections between the water heater collar and the
horizontal vent termination.
2′ max.* (610 mm)
90° Elbow
Vent Pipe Wall Plate
Fire Inspection Ceiling Inspection
Stop Access Panel Access Panel
(Optional)
(Optional)
! CAUTION:
The condensate collector must be used in horizontal terminations if vertical
rise in the vent system exceeds 2 feet (610 mm).*
NOTICES:
· Maintain the proper clearance between the vent pipe and combustible or
noncombustible materials as described on page 16.
· A clearance of 0 in. (0 cm) is allowed between the air intake pipes and
combustible material.
· Use proper support for the vent and air intake pipes as described on
“Venting”.
· Support method used should isolate the vent pipe from floor joists or other
structural members. This helps prevent transmission of noise and vibration.
· DO NOT support, pin, or secure the venting system in a way that restricts
the normal thermal expansion and contraction of the chosen venting material.
31
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Vertical Vent Installation
! WARNING:
Follow the vent manufacturer’s installation instructions since design might
vary from manufacturer to manufacturer. Improper vent installation can result
in death, personal injury, product damage, and/or poor performance.
NOTICE:
Only Rheem-approved termination and parts should be used during installation.
Install a fire stop plate at every penetration of a floor or ceiling, whenever
the vent is not running through a fire-rated shaft.
Maintain the recommended air space clearance to combustible materials and
building insulation.
Hole Through Roof
CL
Hole
Through Ceiling
3
Support vertical and horizontal runs as described on “Venting”. Vertical
supports are required every 4 ft. (1.2 m) along a vertical pipe route, after
every transition to vertical, and after every offset elbow.
NOTICE:
Free-standing vent pipe that penetrates a roof/ ceiling requires another means
of support from a second location.
A, B, C, D
1
Cut a hole through the roof and interior ceiling to accommodate the vent pipe.
4
Determine the vent terminal height and install the vent pipe accordingly.
Refer to “Vertical Vent Terminal Location” on this Use and Care Manual for
clearance requirements.
2
Complete the vent pipe installation to the water heater vent collar. If
required, use high temperature silicone sealant where the vent connector joins
the water heater.
5
Install adequate flashing where the vent pipe passes through the roof.
32
Venting
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Vertical Vent Terminal Location
A, B, C, D
Vent Pipe Through Roof
The following chart with diagrams details the minimum dimensional information needed to determine the proper location of the vertical vent terminal for direct-vent indoor tankless water heaters:
Location A = Minimum clearance above the roof level B = Minimum clearance above anticipated snow level
US Installation Requirements1
12 in (305 cm) above roof level
12 in (305 cm) above anticipated snow level
C = Maximum clearance above roof level (without additional vent support)
D = Maximum clearance above anticipated snow level (requires additional vent
support)
24 in (61 cm) above roof level
24 in (61 cm) above anticipated snow level
E = Required vent clearance from any gable, dormer, or other roof structure with building access (ie, vent, window)
4 ft (12 m)
F = Required vent clearance from any forced air inlet, including dryer and furnace air inlets
10 ft (3 m)
1 In accordance with current ANSI Z2231/NFPA 54 National Fuel Gas Code 2 In accordance with current CAN/CSA B1491 Installation Codes
Canadian Installation Requirements2 18 in (457 cm) above roof level 12 in (305
cm) above anticipated snow level
24 in (61 cm) above roof level
24 in (61 cm) above anticipated snow level
4 ft (12 m)
6 ft (18 m)
NOTICE:
Only manufacturer-approved termination and parts should be used during
installation.
33
INSTALLATION INSTRUCTIONS
Venting for Direct-Vent Water Heater
Standard Vertical Vent Termination
Vertical Termination Adapter Air Intake
Storm Collar
Adjustable Roof Flashing
3″ to 5″ Concentric Pipe
Support Clamp
Fire Stop
Venting
1/4″ Per Foot Upward Slope Support Hanger
CAUTION:
The condensate collector must be used with vertical vent installation.
34
Fire Stop
Condensate Trap
To Drain: Dispose of condensate in accordance to local codes
INSTALLATION INSTRUCTIONS
Plumbing
Water Quality
Water quality must be taken into account when installing and maintaining the
water heater. Water conditions outside of the levels specified below affect
and may damage the water heater. Please note that the limited warranty
provided with the water heater does not cover defects, malfunctions or
failures resulting from water conditions that are not in accordance with the
specifications in the table below.
If you nonetheless install this water heater where the water conditions are
not within the levels specified in
the table below, Rheem recommends that you take the following steps:
· Install a water treatment device or water softener at the same time as the
original installation of the water heater. Rheem offers a water treatment
accessory that can be installed with the water heater. (See below).
· Flush the water heater’s heat exchanger regularly. Rheem offers a flush kit
and isolation valves to help remove scale build up. (See below)
Chart for Recommended Water Quality Levels
pH
(Total Dissolved Solids) TDS
Free Carbon Dioxide (CO2)
Total Hardness
Aluminum
Chlorides
Copper
Iron
Manganese
6585 Up to 500 mg/L
Up to 15 mg/L
Up to 200 mg/L
005 to 02 mg/L
Up to 250 mg/L
Up to
Up to
Up to
10 mg/L 03 mg/L 005 mg/L
Cited reference: National Secondary Drinking Water Regulations
Accessory part numbers listed below See Parts and Accessories Catalog for more information
Zinc
Up to 5 mg/L
Accessory Kit Replacement Filter Tankless Flush Kit Tankless Isolation Valve
AllClear Water Treatment Kit RTG20251 Scale Prevention Device RTG20246
RTG20252 RTG20247
RTG20124
RTG20220AB
Water Supply
! CAUTION:
This water heater MUST ONLY be used with the following water supply conditions
to prevent product damage and operation failure.
Clean, potable water free of corrosive chemicals, sand, dirt, or other
contaminates Inlet water temperatures above 32°F (0°C), but not exceeding
120°F (49°C) DO NOT reverse the HOT and COLD water connections DO NOT connect
this heater to water lines previously used for space heating All water piping
and components shall be suitable for potable water With recommended water
quality (See chart above)
Water Supply Connections
! CAUTION:
IMPORTANT–DO NOT apply heat to the HOT or COLD water connections. If sweat
connections are used, sweat tubing to the adapter before fitting the adapter
to the water connections on the water heater. Any heat applied to the water
supply fittings will permanently damage the internal components of the water
heater.
NOTICE:
In cold environments, ice can accumulate in the water heater’s connectors.
Plug in the water heater
Thermal Expansion
A thermal expansion tank will be required if the water heater is installed in
a system with a recirculation or storage tank. This prevents damage to the
heater, related piping, and the relief valve.
NOTICE:
Replacing the relief valve will not correct the problem!
The expansion tank is designed with a built-in air cushion that compresses as
the system pressure increases. This relieves the over-pressure condition and
eliminates the repeat operation of the relief valve.
For other approved methods of thermal expansion, contact an installing
contractor, water supplier, or plumbing inspector.
power cord for approximately 10 minutes before making these connections. This will melt any ice buildup.
Plumbing should be carried out by a qualified plumbing contractor in accordance with local codes.
Only use approved plumbing materials.
To allow the full flow capacity, it is recommended to keep water inlet and outlet pipes 3/4-in. (1.9cm) diameter or larger.
To conserve energy and to prevent freezing,
insulate both COLD and HOT water supply lines.
DO NOT insulate the pressure-relief valve.
35
Plumbing
INSTALLATION INSTRUCTIONS
Water Supply
Recirculation
Direct recirculation is allowed, provided the loop is thermostatically
controlled, and a timer is used to turn the pump off during off peak periods.
The pump must be sized for a minimum of 5 gpm at 25 ft of head plus building
head. A 10°F difference between the loop thermostat setting and water heater
temperature setting must be maintained.
To ensure proper operation of the water heater, follow these water pressure
guidelines.
Operation of the water heater requires a minimum water pressure of 14 psi (97
kPa) and a minimum activation water flow rate of 0.4 gpm (1.5 lpm).
Continuous operation of the water heater requires a minimum water flow rate of
0.25 gpm (1.01 lpm).
Water pressure of 40 psi (276 kPa) is required to achieve maximum flow rate.
To maintain proper performance, there must be sufficient water supply
pressure.
Water Supply Installation
NOTICE:
· Use only Teflon tape on all COLD and HOT water connections.
· If the water flow resistance of a showerhead is too high, the burner in the
water heater will fail to ignite. Keep all showerheads clean from debris that
could cause additional pressure drop.
· If using mixing valves on the outlet, choose one that prevents COLD water
pressure from overcoming HOT water pressure.
· If multiple water heaters are installed in a manifold system, the water
piping MUST be in “parallel” and the water pressure at each water heater
should be 40 psi (276 kPa).
Required Water Pressure = Min. Operating Water Pressure (14 psi [97 kPa])
+ Pipe Pressure Loss
+ Faucet Pressure Loss
+ Safety Margin (more than 5 psi [34 kPa]).
To supply HOT water to upper floors, additional water pressure will be
required (0.44 psi [3 kPa] per foot of height). Calculate the distance between
the water inlet of the water heater (ground level) to the HOT water faucet
farthest away from the water heater (upper floor level).
· Well water systems should be set to ensure a minimum system pressure of 40
psi (276 kPa). The pressure should remain constant and stable during the
operation of the water heater.
· Gravity water pressure is not recommended. When the water is supplied from a
water supply tank, the height of the tank, the diameter of the supply pipes,
and their relation to water pressure need to be taken into consideration.
NOTICE:
It is not recommended to use pipes with smaller diameters than the water
supply connection of the water heater.
2
Before attaching the water line to the water heater, open the shut-off valve.
Run the water until it has purged all contaminants (sand, debris, air,
caulking).
1
Install a COLD water shut-off valve near the inlet line on the water heater. This valve will be used for servicing and draining purposes.
3
Install a service valve on the end of the COLD water supply line and connect
it to the water inlet on the water heater.
36
INSTALLATION INSTRUCTIONS
Water Supply
4
Open the drain valve in the COLD water outlet line to check the water flow
through the water heater.
NOTICE:
Be sure to connect the COLD water inlet and the HOT water outlet as shown on
the water heater. If reversed, the water heater will not function.
The flow rate of HOT water may vary when more than two faucets (appliances,
fixtures, etc.) are being used simultaneously.
The pipes MUST be completely drainable. If the HOT water faucets are located
at a point higher than the water heater, place a drain valve at the lowest
point.
Plumbing
5
Close the shut-off valve and remove, clean, and replace the water filter.
It is recommended to use unions and flexible copper connections at the COLD
and HOT water lines. They allow the water heater to be disconnected easily for
servicing.
Use the following guidelines when connecting the HOT WATER OUTLET:
Connections between the water heater and point(s) of use should be as short as
possible.
Local codes shall govern the piping used for water connections.
To conserve energy and to prevent freezing, insulate both COLD and HOT water
supply lines. DO NOT insulate drain line or pressure-relief valve.
Alternate Water Piping Arrangement With Preferred Valve Kit
Service valve kits can attach to all tankless water heater systems. All kits include two full-port isolation valves to be used in the COLD and HOT water lines. When installed, these valves allow one person full diagnostic testing and ease of flushing the system. Contact your distributor or place of purchase for availability and installation information.
Relief Valve Drain
Hot Water Service Valve
Water Outlet
Cold Water Service Valve
Water Inlet
37
Plumbing
INSTALLATION INSTRUCTIONS
Water Supply
Relief Valve
A new pressure-relief valve, complying with the Standard for Relief Valves and
Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/CSA
4.4, must be installed at the HOT water outlet connection of the water heater
during installation. Local codes shall govern the installation of any relief
valves.
NOTICE:
· The following drawing illustrates a pressure-only relief valve. If local
codes require a combination temperature and pressure-relief valve, you may
need to install an extension piece to ensure that the relief valve probe is
not directly in the flow path of the water.
· Local codes govern the installation of relief valves. If local codes require
that a temperature and pressurerelief valve be installed, the manufacturer
recommends a type 40XL Watts temperature and pressure-relief valve or
equivalent model be used.
· Manual operation of relief valves should be performed at least once a year.
· If the relief valve on the system discharges periodically, a problem exists.
Turn off the water heater, unplug the unit, and call for service.
For safe operation of the water heater, be sure that:
The pressure rating of the relief valve must not exceed 150 psi (1,034 kPa) or
the maximum working pressure of the water heater. (See the rating plate on the
water heater.)
The BTUH rating of the relief valve must equal or exceed the BTUH input of the
water heater. (See the rating plate on the water heater.)
No valve of any type should be installed between the relief valve and the
water heater.
Discharge from the relief valve should be piped to a suitable drain. Piping
used should be of a type approved for the distribution of hot water.
HOT and COLD water lines should be insulated up to the water heater. See
“Water Supply Installation”.
The discharge line must be NO SMALLER than the outlet of the relief valve. The
drain line must pitch downward to allow for complete drainage of the line and
the valve.
The end of the discharge line should not be threaded or concealed and should
be protected from freezing. No valve of any type, restriction, or reducer
coupling should be installed in the discharge line.
Union Relief Valve
Service Valve Hot Water Supply Outlet
Service Valve Union
Cold Water Service Valve
Relief Valve Discharge Line
One end of the relief valve discharge line connects to the HOT water outlet pipe as shown above. The other end of the pipe should be routed to a suitable drain to eliminate potential water damage.
38
INSTALLATION INSTRUCTIONS
Water Supply
Hot and Cold Pipe Insulation Installation
! WARNINGS:
When pipe insulation is not rated for the appropriate weather conditions,
install electric heat tracing or equivalent to prevent freezing of the pipes.
For increased energy efficiency, use pipe insulation as shown in the diagram Insulate the pipes all the way to the top DO NOT cover any drain or pressure- relief valve(s)
DO NOT insulate or block drain valve on the hot outlet fitting.
If pipes are allowed to freeze, the water heater and the pipes may malfunction
or leak due to freezing water.
NOTICE:
The hot and cold water supply pipes should be insulated to provide additional
freeze protection.
Relief Valve Water Outlet
Hot Water Service Valve
Drain
Cold Water Service Valve
Water Inlet
Plumbing
Gas Supply
Gas Supply
Gas Supply System
WARNING:
DO NOT attempt to convert this water heater for use with a different type of
gas other than the type shown on the rating plate. Doing so could result in
death, personal injury, explosion or fire, product damage, and/or poor
operating conditions or performance.
NOTICE:
Gas piping shall be in accordance with local utility company requirements
and/or in the absence of local codes, use the latest edition of National Fuel
Gas Code (NFGC), ANSI Z223.1. In Canada, use the latest edition of CAN/CSA
B149.1, Natural Gas and Propane installation code.
Apply a thin coat of pipe compound to all threaded male ends. Compound must be
of the type resistant to the action of LP gas.
To ensure proper water heater operation, the gas pipe and gas meter must be
sized correctly.
If flexible connectors are used, the minimum
inside diameter must be 3/4″ or greater and the rated capacity of the
connector must be equal to or greater than the BTU capacity of the water
heater. See manufacturer information for the gas connector. Lengths over 36
inches are not recommended.
DO NOT use excessive force when tightening the pipe sections. Excessive force
can damage the water heater, especially when Teflon pipe compound is used.
Manual Gas Supply Line Shut-Off Valve
Union
Manual Gas Supply Line Shut-Off Valve
Sediment Trap
Cap
39
Gas Supply
INSTALLATION INSTRUCTIONS
Gas Supply
Gas Piping
Pipe-Sizing Procedure
The gas supply system must be properly sized to ensure the proper operation of
this tankless water heater as well as all the gas appliances on the system.
Failure to ensure the gas system, (meter, regulators, and piping) are properly
sized could result in improper operation of this or other gas appliances.
Insufficient gas pressure/supply can cause ignition issues, lockouts, or
operating conditions that could lead to an appliance failure, improper
combustion, carbon monoxide, sooting, or fire. Gas line sizing is based on gas
type, the pressure drop in the system, the gas pressure supplied, and the gas
line type. For gas pipe sizing in the United States, refer to the National
Fuel Gas Code, (NFPA 54, ANSI Z223.1). For Canadian gas pipe sizing, refer to
the Natural Gas and Propane Installation Code CAN/CSA B149.1.
These simplified instructions only address low pressure gas systems using
Schedule 40 Metallic Pipe (Black Iron). For hybrid gas systems, high pressure
main lines with regulators at the appliances, gas systems piped with
corrugated stainless steel tubing (CSST), or Propane gas systems.
Determining the required regulator and gas meter size.
Find the BTU capacity of each appliance on the system. This information is
located on a rating label attached to the appliance. Total the BTU of all the
appliances together and divide that by the heating value of the fuel (for
natural gas the average is 1,024 or 2,546 for propane). This will give you the
total cubic feet per hour of gas required for the system.
At your gas meter/regulator there will be a rating plate that gives the cubic
feet per hour capacity of that equipment. If the total gas required for the
system is greater than the rating of the meter/ regulator then the local gas
company will need to be contacted in order to upgrade the meter/ regulator for
the system.
Cubic Feet Per Hour (CFH) =
Gas Input of Water Heater (Btu/h) Heating Value of Gas (BTU/FT3)
Determining the required pipe size.
The gas system is designed to operate at a certain maximum pressure drop. A
pressure drop greater than what is permissible can cause operational issues
with the gas appliances. The National Fuel Gas Code (NFPA 54, ANSI Z223.1
2012) allows for three pressure drop levels, a 0.3 inch W.C., (see table 2); a
0.5 inch W.C., (see table 3) and a 3.0 inch W.C., (see table 4) pressure drop
for natural gas. Only a 0.5 inch W.C. pressure drop is allowable with Propane
(see table 5). For Canadian installations the maximum allowable pressure drop
is 0.5 inch W.C., (see table 3).
Measure the inlet gas pressure to the system using a manometer. For Natural
Gas, if the inlet pressure is less than 8.0 inches W.C. then use Table 2 or 3
for your gas pipe sizing. Table 4 can only be used if the inlet gas pressure
is 8.0 inches W.C. or greater. Table 4 cannot be used for Canadian
installations.
The gas piping system consists of a main trunk line that runs from the
meter/regulator and branch lines that run from the trunk line to the
individual appliances. A branch may carry gas for more than one appliance.
The trunk line must be sized to carry the entire load of all the gas
appliances on the system. As with determining the meter/regulator size, total
the BTU of all the appliances together and divide that by the heating value of
the fuel (for natural gas the average is 1,024 or 2,546 for propane). This
will give you the total cubic feet per hour of gas required for the trunk
line. Measure the total length of the line Refer to Table(s) 2, 3, or 4 and
find the number closest to but higher than the total cubic feet per hour
requirement calculation. This will tell you the minimum size that the trunk
line must be.
Each branch line must be sized to carry the load of the appliance(s) attached
to it. If more than one appliance is on a branch total the BTU and as with the
trunk line divide that by the heating value of the fuel. Refer to Table(s) 2,
3, or 4 and find the number closest to but higher than the total cubic feet
per hour requirement calculation for the branch and appliance(s). This will
tell you the minimum size for that branch line and appliance.
40
INSTALLATION INSTRUCTIONS
Gas Supply
Gas Supply
Final Considerations
If this water heater is replacing an existing water heater, it is important to
verify the capacity of the gas system. Check the capacity of the
meter/regulator, and verify the pipe lengths and sizes.
An improperly sized gas system will cause operational issues with this water
heater. Other appliances on the gas system may be affected as well.
Flexible Gas Connectors may be used; however, the BTU capacity of the
connector must be checked. Each connector has a capacity label on it, verify
that the connector has a BTU capacity greater than that of the water heater.
An undersized flexible gas connector will cause operational issues with this
water heater.
Half-inch gas lines are permissible provided the gas system meets certain
requirements. First, the gas
pressure on the system must be 8.0 inch W.C. or greater. Second the capacity
of the pipe as outlined in Table 4 is followed. If the existing pipes are too
small it could cause a pressure drop greater than 3.0 inch W.C. and will cause
operational issues with this water heater as well as other gas appliances on
the system.
This is an example, in US, refer to current National Fuel Gas Code, NFPA 54
for correct pipe sizing chart, and in Canada, refer to current Natural Gas and
Propane Installation Code CAN/CSA B149.1.
Table 2 – Pipe-Sizing – Natural Gas
Schedule 40 Metallic Pipe (Black Iron) Inlet System Pressure: Less than 2 PSI (55 inches W.C.) Allowable Pressure Drop: 0.3 inches W.C. Specific Gravity : 0.60 (Capacity in cubic feet per hour)
Length
Pipe Size (Inches)
½
¾
1
1¼
1½
10
131
273
514
1,060
1,580
20
90
188
355
726
1,090
30
72
151
284
583
873
40
62
129
243
499
747
50
55
114
215
442
662
60
50
104
195
400
600
70
46
95
179
368
552
80
42
89
167
343
514
90
40
83
157
322
482
100
38
79
148
304
455
Information in this chart obtained from NFPA 54, ANSI Z223.1 – 2012 Table 6.2(a)
Table 3 – Pipe-Sizing – Natural Gas
Schedule 40 Metallic Pipe (Black Iron) Inlet System Pressure: Less than 2 PSI (55 inches W.C.) Allowable Pressure Drop: 0.5 inches W.C. Specific Gravity : 0.60 (Capacity in cubic feet per hour)
Length
Pipe Size (Inches)
½
¾
1
1¼
1½
10
172
360
678
1390
2090
20
118
247
466
957
1430
30
95
199
374
768
1150
40
81
170
320
657
985
50
72
151
284
583
873
60
65
137
257
528
791
70
60
126
237
486
728
80
56
117
220
452
677
90
52
110
207
424
635
100
50
104
195
400
600
Information in this chart obtained from NFPA 54, ANSI Z223.1 – 2012 Table 6.2(b)
Table 4 – Pipe-Sizing – Natural Gas
Schedule 40 Metallic Pipe (Black Iron) Inlet System Pressure: 8.0 inches W.C. or greater, but Less than 2 PSI (55 inches W.C.) Allowable Pressure Drop: 3.0 inches W.C. Specific Gravity : 0.60 (Capacity in cubic feet per hour)
Length
Pipe Size (Inches)
½
¾
1
1¼
1½
10
454
949
1,787
3,669
5,497
20
312
652
1,228
2,522
3,778
30
250
524
986
2,025
3,778
40
214
448
844
1,733
2,597
50
190
387
748
1,536
2,302
60
172
360
678
1,392
2,085
70
158
331
624
1,280
1,919
80
147
308
580
1,191
1,785
90
138
289
544
1,118
1,675
100
131
273
514
1,056
1,582
Information in this chart obtained from NFPA 54, ANSI Z223.1 – 2012 Table 6.2(c)
Table 5 – Pipe-Sizing – Undiluted Propane
Schedule 40 Metallic Pipe (Black Iron) Inlet System Pressure: 11 inches W.C. Allowable Pressure Drop: 0.5 inches W.C. Specific Gravity : 1.5 (Capacity in cubic feet per hour)
Length
Pipe Size (Inches)
½
¾
1
1¼
1½
10
291
608
1150
2350
3520
20
200
418
787
1620
2420
30
160
336
632
1300
1940
40
137
287
541
1110
1660
50
122
255
480
985
1480
60
110
231
434
892
1340
80
101
212
400
821
1230
100
94
197
372
763
1140
125
89
185
349
716
1070
150
84
175
330
677
1010
Information in this chart obtained from NFPA 54, ANSI Z223.1 – 2012 Table 6.3(d)
41
INSTALLATION INSTRUCTIONS
Gas Supply
Gas Supply Installation
1
Install the manual gas appliance shut-off valve to the gas connection at the
water heater. The shutoff is supplied with the water heater.
4
Using the proper-size piping, fittings, and components, build the gas supply
line to the water heater.
NOTICE:
The gas supply line should be a minimum of 3/4in. (1.9-cm) black steel pipe or
other approved gas piping material.
2
Install a ground joint union or ANSI design-certified semi-rigid or flexible
gas appliance connector to the open end of the manual gas appliance shutoff
valve. The (NFGC) ANSI Z223.1 and CAN/CSA B149.1 codes mandate the use of
manual gas shut-off valves.
3
Install a manual gas supply line shut-off valve to the end of the gas supply
line.
5
Install a sediment trap at the lowest portion of the gas line
The inlet gas pressure to the water heater must NOT exceed 105 in wc (26 kPa)
for natural gas and 13 in wc (32 kPa) for LP gas For purposes of input
adjustment, the minimum inlet gas pressure (with main burner on) is shown on
the water heater rating plate If high or low gas pressures are present,
contact your gas supplier for correction
Gas Supply
42
Gas Supply
INSTALLATION INSTRUCTIONS
Gas Supply
Leak Testing
! WARNING:
Never use an open flame to test for gas leaks, because death, personal injury,
and/or property damage can result. The water heater and its gas connections
MUST be leak-tested at normal operating pressures before the unit is placed in
operation. These tests should also include all factory connections.
Turn on the gas shut-off valve(s) to the water heater. Use a soapy water
solution to test for leaks at all the connections and fittings. If bubbles are
seen, it indicates a gas leak that must be corrected. Contact a qualified
service technician.
Pressure Testing the Gas Supply System
! CAUTION:
If inlet gas pressure is out of allowable range [4.0″ w.c. (1.0kPa) 10.5″
w.c. (2.6kPa)] for Natural Gas, or [8.0″ w.c. (2.0kPa) 13.0″ w.c. (3.2kPa)]
for LP gas, a gas pressure regulator must be installed to maintain the
allowable inlet gas pressure.
The water heater and its manual gas shut-off valve must be disconnected from
the gas supply piping system whenever the pressure testing will exceed 1/2 psi
(14 in. w.c. [3.5 kPa]). The water heater must be isolated from the gas piping
system whenever the pressure testing will be less than and/or up to 1/2 psi
(14 in. w.c. [3.5 kPa]). Closing the manual gas shut-off valve will isolate
the water heater from the gas piping system.
43
INSTALLATION INSTRUCTIONS
Gas Supply
Electrical
Gas Supply
High-Altitude Installation
! WARNING:
DO NOT install this water heater at elevations above 2000 ft. (610 m) without
the proper adjustments. Failure to install a water heater suitable for the
altitude at the location it is intended to serve can result in improper
operation of the appliance resulting in property damage and/or producing
carbon monoxide gas, which could result in personal injury or death.
NOTICE:
For installations above 2000 ft. (610 m) elevation, contact a qualified
service technician to make the proper altitude adjustments. You can also
contact your local gas supplier, place of purchase, or call the Rheem Customer
Service phone number listed in the “Call for Assistance” section. See
“HighAltitude DIP Switch Adjustments” for additional information.
Electrical Wiring
! DANGER:
Shock Hazard Before servicing the water heater, turn off the electrical
power to the water heater at the main disconnect or circuit breaker. Failure
to do so will result in death or serious personal injury.
! WARNING:
Field wiring connections and electrical grounding must comply with local codes
or, in the absence of local codes, with the latest edition of the National
Electrical Code, ANSI/NFPA 70, in the U.S., or Canadian Electrical Code,
CAN/CSA C22.1, Part 1, in Canada.
! CAUTION:
Labeling all wires prior to disconnection is recommended. Wiring errors can
cause personal injury, product damage, and/or dangerous operating conditions.
Verify correct operation after servicing.
NOTICE:
· DO NOT connect power until venting installation is complete (see Venting
Installation).
· Wait ninety (90) seconds after power is connected for the first time to
initiate operation of the water heater.
· Power consumption is up to 100 Watts during normal operation, 3-5 Watts
during standby, (waiting to run), and up to 200 Watts during the freeze
protection operation.
Power Cord
The electric power supply requirement for this water heater is 120 VAC/60 Hz,
2 Amps.
A dedicated circuit is recommended for the water heater. DO NOT connect to a
GFCI or AFCI circuit. Multiple units may be connected to a single circuit up
to the circuit rating.
DO NOT use 3-prong to 2-prong adapters. DO NOT use power strips or multiple
outlet adapters.
All direct-vent gas models come with a threeprong power cord. Only use this
power cord and a matching grounded electrical outlet.
All outdoor gas models do not come with a power cord. Only hard-wire to an
appropriate power outlet with a ground terminal.
Keep any excess length of the power supply cord on the outside of the water
heater.
If local codes require hard-wiring, see instructions for “Hard-Wiring the
Electrical Connections” below.
Hard-Wiring the Electrical Connections
Wiring should be performed by a qualified electrician in accordance with local
codes.
The water heater requires a properly grounded 120 VAC/60 Hz power supply.
Multiple water heaters may be connected to a single circuit up to that
circuit’s rating.
DO NOT connect grounding wire to water pipes, gas pipes, telephone cables,
lighting conductor circuits, or to any other grounding circuits that require a
GFCI or AFCI (arc fault circuit interrupter).
An ON/OFF switch must be provided and installed for the incoming 120 VAC power
supply.
Wire the water heater exactly as shown in the wiring diagram. This wiring
diagram can also be found inside the water heater cover panel.
The green screw is provided in the enclosure for a grounding connection.
Connect the live wire to the black wire and neutral wire to the white neutral
wire.
44
Electrical Wiring Wiring Diagram
WIRING DIAGRAM SCHÉMA DE CÂBLAGE
FOR OUTDOOR MODEL ONLY UNIQUEMENT POUR MODÈLE À USAGE EXTÉRIEUR
ON MARCHE
DIP SWITCH2
CONTACTEUR DIP2 OFF
ARRÊT
SW
SW
ON MARCHE
DIPSWITC1 CONTACTEURDIP1 OFF ARRÊT
MAX BUTTON BOUTON MAX
SW
MIN BUTTON BOUTON MIN
PU Y BR P G W GY BK BL
WIFI MODEL MODÈLE WIFI
WATER LEAK SENSOR CAPTEUR DE FUITE D’EAU
FOR WIFI MODEL ONLY UNIQUEMENT POUR MODÈLE WIFI
INSTALLATION INSTRUCTIONS
FAN MOTOR
VENTILATEUR DU MOTEUR
ANTI-FROST HEATER CHAUFFAGE ANTI-GIVRE
FOR CONDENSING MODEL ONLY UNIQUEMENT POUR MODÈLE DE CONDENSAGE
GY
IGNITER
ALLUMEUR
FOR INDOOR,DIRECT-VENT MODEL ONLY
POUR MODÈLE INTÉRIEUR À VENT DIRECT SEULEMENT
BK
GYorG
W
AC
120V
GND
BK
W
COLOR CODE CODE COULEUR
RREDROUGE WWHITEBLANC BRBROWNMARRON BKBLACKNOIR BLBLUEBLEU GYGRAYGRIS GGREENVERT OORANGEORANGE YYELLOWJAUNE GYGREENYELLOW VERTJAUNE PPINKROSE PUPURPLEVIOLET
FUSE(10A) FUSIBLE(10A)
ADJUSTER BUTTON BOUTON DE RÉGLAGE
DIP
DIP
R BKW YBL W BL R O Y
SW SW
SW
BL
GY
BK
GAS TYPE CIRCUIT BOARD
WW
GY GY
PLAQUE DE CIRCUIT IMPRIMÉ TYPE GAZ
CIRCUIT BOARD PLAQUE DE CIRCUIT
LED
BK BK
USUALLY DISCONNECTED NORMALEMENT DÉCONNECTÉ
R R
G G
Y Y
BL BL
O O
W W
BR BR
BK BK
R
R
W W
BK G R W
R BK W R BL BK GY Y
BL BL
R
TO PUMP À LA POMPE
BK G R BRBL W O Y
WATER LEVEL ELECTRODE ÉLECTRODE DE NIVEAU D’EAU
BK G R BRBLW O Y FOR CONDENSING MODEL ONLY
UNIQUEMENT POUR MODÈLE DE CONDENSAGE
LIMITER MOTOR LIMITEUR MOTEUR
LIMITER MOTOR LIMITEUR MOTEUR
WATER BY-PASS CONTROL MOTOR
WATER VOLUME CONTROL MOTOR
MOTEUR MÉLANGE D’EAUMOTEUR DÉBIT D’EAU
DISPLAY AFFICHAGE
FOR NON-WIFI MODEL ONLY
UNIQUEMENT POUR MODÈLE SANS WIFI
R BK BR
THERMOSTAT
BK OR W BK OR W
WATER FLOW SENSOR CAPTEUR DE DÉBIT D’EAU
FOR CONDENSING MODEL ONLY UNIQUEMENT POUR MODÈLE DE CONDENSAGE WATER INLET
THERMISTOR THERMISTANCE ENTREE D’EAU FROIDE
BK
AMBIENT AIR THERMISTOR
BK
THERMISTANCE D’AIR AMBIANT
W
HEAT EXCHANGER THERMISTOR
W
THERMISTANCE ÉCHANGEUR DE CHALEUR
BK OR W BK OR W
HOT WATER OUTLET THERMISTOR THERMISTANCE SORTIE D’EAU CHAUDE
W
OVER HEAT LIMITER
W
LIMITEUR DE SURCHAUFFE
P.G.F.R VALVE
VALVE P.G.F.R
SOLENOID VALVE 4
ÉLECTROVALVE 4
SOLENOID VALVE 3 ÉLECTROVALVE3
SOLENOID VALVE 2
ÉLECTROVALVE2
SOLENOID VALVE 1 ÉLECTROVALVE1
GAS INLET SOLENOID VALVE 0 ÉLECTROVALVE 0 D’ADMISSION DE GAZ
MAIN REMOTE CONTROL TÉLÉCOMMANDE <
FLAMEROD DÉTECTEUR DE FLAMMES
BATH REMOTE CONTROL 1 TÉLÉCOMMANDE 1 <
BATH REMOTE
CONTROL TÉLÉCOMMANDE 2
<
45
Electrical
Electrical
INSTALLATION INSTRUCTIONS
Electrical Wiring
Remote Control Selection and Location
WARNING:
Field wiring connections and electrical grounding must comply with local codes
or, in the absence of local codes, with the latest edition of the National
Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CAN/CSA
C22.1, Part 1.
Review the following considerations before determining the location of the
remote control(s):
· DO NOT install any remote control outdoors or where it can come in contact
with water.
NOTICE:
The provided remote control will allow maximum temperature settings of 120°F
(49°C). Temperatures up to 140°F (60°C) for residential applications can be
achieved with the MAIN (UMC-117) remote control. Only qualified service
personnel should perform this adjustment.
· An optional cable (EZ Link CableTM) can be purchased separately to manifold
two water heaters together.
· DO NOT attempt to disassemble a remote control. All controls are sealed and
calibrated for accurate water heater control and operation.
· Avoid installing the remote control in the following areas and/or
conditions: area exposed to heat. area exposed to steam. area exposed to
oil. area exposed to direct sunlight. areas near stored or used flammable
products.
Place remote control out of children’s reach.
The remote control should be installed in a convenient location (e.g.,
kitchen, laundry room, utility room, or directly next to the water heater).
The maximum distance between the water heater and the remote control
installation location is limited to 195 ft. (59 m) of wire.
One remote control is provided with the water heater. Additional remote controls may be purchased separately. The available remote controls are listed in the following chart. Up to three remote controls can be used with the water heater. No other manufacturer’s controls are suitable for use with this water heater.
Remote Control Model Number
UMC-117
USC1-117 USC2-117 MIC-6 or MIC-185** Manifold System
Remote Control Description
MAIN
BATH 1 BATH 2 Manifold System
Temperature Set Point Range 100°F120°F (38°C49°C) 125°F140°F (52°C60°C) 100°F120°F (38°C49°C) 100°F120°F (38°C49°C)
Availability Factory Default Adjustment for Residential Products Optional
(Sold Separately) Optional (Sold Separately)
Optional (Sold Separately)
**When a manifold system is installed, the main remote control connected to the manifold controller (MIC-6 or MIC-185) has priority over the remote controls connected to the water heater.
46
INSTALLATION INSTRUCTIONS
Electrical
Remote Control Installation (Outdoor Models)
WARNING:
Field wiring connections and electrical grounding must comply with local codes
or, in the absence of local codes, with the latest edition of the National
Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CAN/CSA
C22.1, Part 1.
NOTICE:
Remote control cable needs to be type CL3R/CMR shielded security wire
equivalent (18 AWG) and need not to be polarity-sensitive. It is not
recommended to have wiring exposed. DO NOT apply sealant to remote control
cable. DO NOT use network cable, telephone wire, or any twisted-pair cable.
Connecting the MAIN (UMC-117) Remote Control to a Wall:
4
Install the base plate to the wall using suitable screws and wall anchors.
NOTICE:
The tabs on the base plate should always point out.
1
Drill a 1- to 1 1/2-in. (2.5/3.8-cm) hole at the proposed control location.
Install the remote control cable between the location of the remote control
and the water heater.
2
Remove the remote control from the base plate.
3
Feed the remote control cable through the large center hole in the base plate.
5
Connect the remote control to the remote control cable.
6
Position the remote control on the base plate.
NOTICE:
The tabs on the base plate should line up with the slots on the back of the
remote control. Secure the remote control to the base plate with one screw
into the bottom tab.
NOTICE:
DO NOT attempt to connect the remote control or control wire to the water
heater while the water heater has power applied to it. Damage to the water
heater will occur. DO NOT cut or strip the wiring while it is connected to the
water heater or while the water heater has power applied to it.
47
INSTALLATION INSTRUCTIONS
Remote Control Installation (Outdoor Models Only)
Remote Control Installation (cont.)
Connecting the Remote Control to the Water Heater:
1
Ensure that the power to the water heater has been disconnected.
4
Firmly tighten the terminal screws by hand.
Electrical
2
Remove the front cover panel on the water heater.
NOTICE:
DO NOT connect remote control to power supply. The remote control connectors
are located on the right side of the PCB.
5
Reinstall the front cover panel on the water heater.
6
Switch on the power supply to the water heater. Check for proper operation of
the remote control and the water heater.
3
Connect the remote control extension cables from the remote control to the
remote control connection terminals.
NOTICE:
The remote control wire connection terminals are not polarity-sensitive.
48
INSTALLATION INSTRUCTIONS
WiFi Remote Circulation (Certain Models Only)
NOTICE:
Wifi remote must be installed Indoors.
1
Drill a 1- to 1 1/2 in. hole at the proposed control location. Run the control
cable between the location of the remote control and the water heater.
4
Install the front cover over the wifi display and snap it in to secure.
Electrical
2
Install the base of the wall mount to the wall using 2 included screws.
5
Plug the other end of the cable into the PCB of the water heater, which will
be indoors.
3
Install the wifi display into the wall mount by resting the bottom tab into
the slot on the wall mount. Then push the top tab of the wifi diplay into the
retention clips and connect the wire harness.
49
INSTALLATION INSTRUCTIONS
Insulation Blankets
In general, insulation blankets for external use on gas water heaters are not
necessary The purpose of an insulation blanket is to reduce the standby heat
loss from the water heater’s storage tank Since these water heaters do not
store water, they eliminate the need for the insulation blanket
WARNING:
NEVER cover the air inlet, flue outlet, or operating and warning labels
attached to the water heater. Covering these components will cause dangerous
operating conditions that can lead to death, personal injury, property damage,
and/or product damage.
The manufacturer’s warranty does not cover any damage or defect caused by insulation, insulation attachment, or use of any type of energy-saving or other unapproved devices (unless authorized by the manufacturer) The use of unauthorized energy-saving devices can result in death, personal injury, and/or property damage The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices
Installation Precautions
Follow all installation instructions covered in this manual.
Check the inlet gas pressure to make sure it is within the range specified on
the rating plate.
Make sure there is adequate air for combustion and ventilation as described on
“Venting” in this manual.
Maintain proper clearances to combustibles and non combustibles as specified
on the rating plate.
Make sure the venting system complies with local codes, National Fuel Gas
Codes (ANSI Z223.1/ NFPA 54) or CAN/CSA B149.1, and the guidelines found on
“Venting” in this manual.
Contact the local gas company to make sure the gas meter and gas piping are
adequately sized.
Use Teflon tape on all male water line connections and fittings.
DO NOT block or restrict any air intake openings.
DO NOT remove the front cover unless absolutely necessary. This should only be
done by a qualified service technician.
DO NOT install this product where standing water may occur.
DO NOT use pipe dope on water line connections and fittings.
Electrical
50
INSTALLATION INSTRUCTIONS
Installation Checklist
A. Water Heater Location
Indoor water heaters must be installed indoors
Outdoor water heaters must be installed outdoors
Close to area of ventilation termination (indoor models)
Protected from freezing temperatures
Proper clearance from combustible material observed
Sufficient fresh air supply for proper operation of water heater
Air supply free of corrosive elements and flammable vapors
Provisions made to protect area from water damage
Sufficient room to service heater
Combustible materials, such as clothing, cleaning materials, and rags, clear
of the heater and vent piping
Water heater is properly attached to the wall
B. Coaxial Vent (Indoor Models)
Vent pipe material is Category III and is manufacturer-approved
Horizontal vent runs have 1/4 in per foot of DOWNWARD slope towards the vent
terminal
Vertical venting is installed as described in the “Vertical Vent Installation”
section
Connector(s) securely fastened together with hightemperature silicone (500°F
[260°C]) and airtight
All coaxial vent runs are properly installed
Vent terminal is properly installed
Maximum vent length is observed
C. Water Supply/Relief Valve
Water supply has sufficient pressure
Air has been purged from the water heater and the piping
Water connections tight and free from leaks
Water filter is clean and in place
All piping has been assembled as described on “Water Supply”
Water pipes are insulated and protected from freezing, if necessary
Pressure-relief valve properly installed with discharge line running to open
drain
Discharge line protected from freezing, if necessary
D. Gas Supply
Gas type matches listing on rating plate
Gas supply pressure is sufficient for the water heater
Gas line equipped with shut-off valve, union, and sediment trap as described
on “Gas Supply System”
Approved pipe-joint compound has been used on all gas pipe connections
All connections and fittings have been checked for leaks with a soapy water
solution
Gas company inspected installation (if required)
E. Electrical Wiring
Supply cord and/or wiring meets all local codes, National Electrical Code,
ANSI/NFPA 70, in the US, or Canadian Electrical Code, CAN/CSA C221, Part 1, in
Canada
Voltage matches listing on rating plate
Water heater is properly grounded
F. Condensate
Drain hose is attached to the condensate collector, and condensate is drained
as described on “Draining Vent Condensate”
51
Checklist
USING YOUR WATER HEATER
Activating the Water Heater
WARNING:
Before operating this water heater, be sure to read and follow the
instructions on the following label, all labels on the water heater, and the
“Important Safety Information” section in this manual. Failure to do so can
result in unsafe operating conditions that can result in death, personal
injury, property damage, and/or product damage.
NOTICE:
If you have any problems reading or following the instructions in this manual,
STOP and call a qualified service technician or contractor.
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING : If you do not follow these instructions exactly, a fire or explosion
may result
causing property damage, personal injury or loss of life.
OPERATING INSTRUCTIONS
1.STOP! Read the safety information above on this label.
2.Turn off all electric power to the appliance. 3.Do not attempt to light the burner by hand.
GAS SHUTOFF VALVE
4.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the “OFF” position.
OPEN CLOSE
5.Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow “B” in
the safety information above on this label. If you don’t smell gas, go to the next step.
6.Turn the Gas Shutoff Valve located on the outside of the unit counterclockwise to
the “ON” position.
7.Turn on all electric power to the appliance.
8.If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance”
and call your service technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1.Turn off all electric power to the appliance if service is to be performed.
2.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to
the “OFF” position.
52
Start/Adjust
USING YOUR WATER HEATER
Operating Instructions
Read, understand, and follow the safety information listed on the operating
label and in the “Important Safety Information” section in this manual.
1
Disconnect all electric power to the water heater.
2
Turn the gas shut-off valve clockwise to the OFF position. This valve is
located on the outside of the water heater. Wait 5 minutes to clear any gas.
If you don’t smell gas, proceed to Step 3.
NOTICE:
If you smell gas, STOP and follow the safety instructions listed under B on
the operating label or on the front cover of this manual.
4
Turn on all electric power to the water heater. The remote control must be
powered on prior to operating the water heater.
WARNING:
DO NOT attempt to light the burner by hand. Lighting the burner by hand is an
unsafe operating condition that can result in death, personal injury, property
damage, and/or product damage. If the water heater burner will not light, turn
off the water heater as described below and call your service technician or
gas supplier.
Shutting Off the Water Heater
1
Disconnect all electric power to the water heater.
3
Turn the gas shut-off valve counterclockwise to the ON position
2
Turn the gas shut-off valve clockwise to the OFF position.
Start/Adjust
53
USING YOUR WATER HEATER
Safety Precautions
! WARNING:
· Flammable vapors can be drawn by air currents from surrounding areas to the
water heater. Vapors can ignite causing death, personal injury, or product
damage.
· DO NOT store or use flammable or combustible materials (gasoline, paint
thinner, adhesives, newspapers, rags, mops, etc.) in the vicinity of the water
heater or any other gas appliance. If they must be used, open doors and
windows for ventilation, and shut off all gas-burning appliances, including
their pilot lights.
· DO turn off manual gas shut-off valve if water heater has been subjected to
overheating, fire, flood, physical damage, or if the gas supply fails to shut
off.
· DO NOT turn on water heater unless water and gas supplies are completely
opened.
· If there is any difficulty in understanding or following the operating and
care instructions in this manual, it is recommended that you contact a
qualified service technician to perform the work.
Use Instructions
Setting the Water Temperature
! DANGER:
Water temperatures above 125°F (52°C) will result in death and/or severe burns
from scalding.
Safety and energy conservation are factors to be considered when selecting the
water temperature setting. The temperature of the water in the water heater
can be regulated by setting the temperature on the front of the remote
control. Be sure to read and follow the warnings outlined on the pictured
label.
The remote control has been preset and shipped at the recommended temperature
setting.
Safety factors should be considered whenever altering the water temperature
setting. The chart below may be used as a guide in determining the proper
water temperature for your home.
Time/Temperature Relationship in Scalds
Water Temperature
Time to Produce a Serious Burn
120°F (49°C) 125°F (52°C) 130°F (54°C) 135°F (57°C) 140°F (60°C) 145°F (63°C)
150°F (66°C) 155°F (68°C)
Table courtesy of Shriners Burn Institute
More than 5 minutes 1 1/2 to 2 minutes About 30 seconds About 10 seconds Less
than 5 seconds Less than 3 seconds About 1 1/2 seconds
About 1 second
! DANGER
HOT
BURN
Water temperature over 125°F (52°C) can cause severe burns instantly or death
from scalds. Children, disabled and elderly are at highest risk of being
scalded. See instruction manual before setting temperature at water heater.
Feel water before bathing or showering. Temperature limiting valves are
available, see manual.
54
USING YOUR WATER HEATER
Use Instructions
Setting the Water Temperature (cont.)
Maximum water temperature occurs while the water heater burner is on. To determine the water temperature:
NOTICE:
The temperature set point on the standard remote control cannot be increased
above 112°F (44°C) when a hot water faucet is in the open position. To achieve
temperatures above 120°F (49°C), contact a qualified service technician. Only
factory-authorized remote control(s) should be used.
The water heater may not operate with a small water flow (<04 gpm) Increase
the water flow and recheck If it still does not operate with the hot water
faucet completely open, increase the temperature setting on the remote control
Turn on the hot water faucet and place a thermometer in the water stream.
NOTICE:
Water temperature at the faucet may vary depending on the season and the
length of pipe from the water heater.
The control temperature range is between 100°F (38°C) and 120°F (49°C) To
adjust the temperature to a desired setting, press the UP or DOWN adjustment
button on the face of the control The new temperature set point will show on
the LED display
Water Heater Facts
! DANGER:
Water temperatures above 125°F (52°C) will result in death and/or severe burns
from scalding.
· The hottest-temperature water will be at the faucet closest to the water
heater
· Always remember to test the water temperature with your hand before use
· Always supervise young children or others who are incapacitated
· The water heater is equipped with a device that will shut off the gas supply
to the burner if the water heater exceeds normal operating temperatures
· Any water heater that has been subjected to fire, flood, physical damage, or
been under water should be turned off at the manual gas shut-off valve and not
used until it has been checked by qualified service personnel
In-Use Indicator (Lit during operation)
Priority Indicator
LED Temperature and Error Code
Display
(Outdoor model only)
In-Use Indicator (Lit during operation)
Temperature Adjustment
Buttons
Priority Indicator
Power On/Off Indicator
In-Use Indicator Lit during operation
Power On/Off Indicator
LED Temperature and Error Code
Display
Temperature Adjustment
Buttons
Priority Indicator
Alarm/ Error Indicator WiFi Signal Indicator
!
PRIORITY
Temperature Adjustment
Buttons
Power On/Off Button
LED DISPLAY
Power On/Off Button
WiFi Button
Power On/ Off Button
LED WiFi DISPLAY
(WiFi model only)
55
USING YOUR WATER HEATER
Setting the Water Temperature
WARNING:
Improper adjustment, alteration, service, or maintenance can result in death,
personal injury, property damage, and/or product damage.
Maximum Temperature Adjustment by the Main Display Control (UMC117)
DANGER:
Water temperatures above 125°F (52°C) will result in death and/or severe burns
from scalding.
WARNING:
Refer to chart below and the scald potential warnings on page 4 on this manual
before making an adjustment. Changing this setting is done at your own risk.
Time/Temperature Relationship in Scalds
Water Temperature
Time to Produce a Serious Burn
120°F (49°C) 125°F (52°C) 130°F (54°C) 135°F (57°C) 140°F (60°C) 145°F (63°C) 150°F (66°C) 155°F (68°C)
More than 5 minutes 1 1/2 to 2 minutes About 30 seconds About 10 seconds Less than 5 seconds Less than 3 seconds About 1 1/2 seconds About 1 second
Table courtesy of Shriners Burn Institute
Residential water heater temperatures can be adjusted up to 140°F (60°C). DO NOT perform the following adjustment if a setting of up to 140°F (60°C) is not required.
Temperature Conversion Chart °F/°C
100 102 104 106 108 110 112 114 116 38 39 40 41 42 43 44 46 47
118 120 125 130 140 150 160 170 °F 48 49 52 54 60 66 71 77 °C
In-Use Indicator (Lit during operation)
Priority Indicator
LED Temperature and Error Code
Display
Power On/Off Button and Indicator
Temperature Adjustment
Buttons
To adjust the set temperature above 120°F (49°C), please refer the following steps.
1
Turn on the control.
2
Turn off the gas and water to the water heater by closing the shut-off valves.
3
Press the UP adjustment button repeatedly until 120°F (49°C) shows in the LED
display. Hold the UP button until the “120” on the display starts to blink.
NOTICE:
LED display only shows °F.
56
Start/Adjust
USING YOUR WATER HEATER
Setting the Water Temperature
4
While “120” is blinking, press and hold the UP button for 5 seconds, to set
ever above 120°F, should press and hold the UP button for 5 seconds.
Setting with Remote Control
In-Use Indicator (Lit during operation)
LED Display (Displays water
temperature and error codes)
Priority Indicator
Temperature Adjustment
Buttons
ON/OFF Button and
Indicator
To change the temperature settings up to 140°F (60°C):
3
Press the UP adjustment button repeatedly until 120°F (49°C) shows in the LED
display. Hold the UP button until “140” on the display starts to blink and
continue holding the UP button.
NOTICE:
LED display only shows °F.
4
While “140” is blinking, press the UP and DOWN adjustment buttons at the same
time. “140” will appear without blinking
5
Press the UP or DOWN adjustment button to set the desired temperature.
1
Turn on the remote control.
6
Turn on the gas and water to the water heater by opening the shut-off valves.
To limit maximum water temperature setting to 120°F (49°C):
2
Turn off the gas and water to the water heater by closing the shut-off valves.
1
Turn on the remote control.
57
Start/Adjust
USING YOUR WATER HEATER
Setting the Water Temperature
2
Turn off the gas and water to the water heater by closing the shut-off valves.
5
Press the UP or DOWN adjustment button to set the desired temperature.
3
Press the DOWN adjustment button repeatedly until 100°F (38°C) or shows in the
LED display. Hold the DOWN button until the number on the display starts to
blink.
6
Turn on the gas and water to the water heater by opening the shut-off valves.
4
While the number is blinking, press the UP and DOWN adjustment buttons at the
same time. The number will stop blinking.
WiFi Setup
1. Download the EcoNet app to your mobile device and ensure that the device
is connected to the WiFi network.
2. Press and hold the WiFi button display until the WiFi indicator flashing.
on the begins
3. Open the EcoNet application and follow the instructions on the application to connect the water heater.
58
Start/Adjust
USING YOUR WATER HEATER
Piping for Space Heaters
Local codes or plumbing authority requirements may vary from the instructions
or diagrams provided in this manual and take precedence over these
instructions
Combination Potable and Space Heating Application
DANGERS:
When this system requires water for space heating at elevated temperatures
(above 125°F [52°C]), a mixing or tempering valve must be installed in the hot
water supply line to the house in order to reduce the scald hazard potential.
· Any piping or components used in the
installation of this water heater in a combination potable and space heating
application must be suitable for use with drinking water.
· If this water heater is installed in an application intended to supply
domestic hot water needs and hot water for space heating purposes, DO NOT
connect the heater to an existing heating unit or components of a heating
system that have previously been used with a nondrinking water system. Toxic
chemicals such as those used for boiler treatment may be present and will
contaminate the drinking water supply causing possible health risks. Never
introduce toxic chemicals, such as those used for boiler treatment, into this
system.
· This water heater is not approved as the dedicated space heating unit. This
water heater must be used for combination applications with air handler only
and not for indoor heating applications.
Space Heater
Typical Combination Illustration
Union
Air Separator
Shut-Off Valve
Relief Valve
Air Handler
Tempering Valve
Tempering Water
Tankless Water Heater
Gas Supply Line
Drain Valve
Cold Water Supply Shut-Off Valve
Check Valve
Cold Water Supply
Potable Water Expansion Tank (2 gallons)
59
USING YOUR WATER HEATER
Recirculation Pump Control
Local codes or plumbing authority requirements may vary from the instructions
or diagrams provided in this manual and take precedence over these
instructions.
Recirculation Mode
Your tankless water heater has the ability to control an external
recirculation pump which recirculates the water in the plumbing system to
provide hot water more quickly when a faucet is opened. Two modes are
available:
· Timer recirculation (Energy Saver Mode) · Timer recirculation (Performance
Mode) If this water heater has wifi capability, additional two modes are
available: · On-Demand recirculation · Schedule recirculation Information for
setting up these modes can be found in the EcoNet App.
NOTICE:
Recirculation control is for residential application only. Recirculation
control cannot be used with an air handler or with multiple water heater
installations. The maximum temperature setting is 140°F (60°C) in
recirculation control.
Pump Requirements
Voltage: 120V, 60Hz In-rush current: Less than 2.5 amps Amperage: less than
2.0 amps
WARNING:
A control board can be damaged if amperage exceeds 2.0 amps.
Pump Size
The pump should be sized for about 2.5 gpm at the pressure drop through the
tankless water heater and the supply and return plumbing in the recirculation
loop. Contact service department listed on page 77 of this use and care manual
if you need more information.
Recommend size and length for
recirc. line
To conserve energy and minimize heat loss, insulation for hot water lines is
recommended. *Equivalent pipe length includes hot water line, return lines and
all fittings.
Maximum allowable equivalent pipe Length*
Pipe Diameter (Copper pipe) Pipe length
¾” 400 ft.
½” 100 ft.
Typical Recirculating Pump Installation
Single Unit
Expansion Tank
Recirculating Pump
60
Hot Water to Fixtures
3/4″
Hot Water Loop
Dedicated Return Line
Cold Water to Tankless
Wire to Connect to Pump
Circulation Pump 3/4″
Cold Water Supply
USING YOUR WATER HEATER
Recirculation Pump Control
Installation
1
Disconnect all electric power to the water heater.
Control Board
Blue connector
BK W
Add 4 Amp Fuse
PUMP
Cut blue connector and splice wires.
5
Connect the pump’s connector to the control board harness. If necessary, cut the blue connector, splice the wires, and add a 4 amp fuse to the hot wire of the pump.
Ground
2
Remove the front cover panel on the water heater.
Install the recirculation pump on the return line according to the pump
manufacturer installation instructions. Install a check valve in the return
line as shown in typical recirculation pump installation if one is not
integrated into the pump. See “Typical Recirculation Pump Installation”.
- Check valve is included in Rheem recirculation pump kit.
3
6
Connect the ground wire from the pump to a screw at the base of the water
heater cabinet.
NOTICE:
Follow any applicable electrical code and the pump manufacture installation
instruction referring to the Pump Electrical Connection Diagram in Step 5 of
these instructions.
DIP Switch
Control Board
4
The wire harness for the recirculation pump is bundled with the wire harness
from the control board. Find a blue connector with a black and a white wire.
7
Find DIP Switch 2 in the top-right portion of the control board. The switch
labeled “DIP 2” is the bottom switch.
61
Recirculating Pump
USING YOUR WATER HEATER
Recirculation Pump Control
DIP
Switch
ON
ON
2
DIP Switch
1
“MAX” button
1234
1234
“MIN” button
“ADJUST” button
8
The factory setting for this switch should all be in the OFF position (DOWN).
DIP 2 ON
DIP 1 ON
9
1234
1234
Change the first switch on “DIP 2” to the ON position (UP). Performance mode is selected.
DIP 2 ON
DIP 1 ON
Turn On the remote control. The pump and water heater will turn on to raise
recirculation loop temperature.
Recirculation Operation
The water heater is turned ON when the recirculation pump starts operation.
The water heater produces hot water at the setting temperature. When the
return water temperature reaches approximately 15°F (8°F) below the setting
temperature, the water heater and the pump will turn OFF. The cycle will
restart at the approximate time interval in the table below based on the
temperature thermistor readings.
Energy Saver Mode
The Energy Saver mode operates as follows:
· Less energy consumption due to fewer pump cycles
· Pump cycles ON every 30 to 69 minutes
Performance Mode
The Performance mode operates as follows:
· Higher energy consumption due to more pump cycles
· Pump cycles ON every 15 to 35 minutes
10
1234
1234
To select Energy Saver mode, change the fourth switch on “DIP 1” to the ON position (UP).
11
Replace the front cover panel.
12
Turn on all electric power to the water heater.
62
Setting Temp
[°F] 140 135 130 125 120 118 116 114 112 110 108 106 104 102 100
Typical Pump ON Intervals [Min]
Performance 15 15 15 15 16 17 18 19 20 22 24 26 28 31 35
Energy Saver 30 30 30 30 31 33 35 38 40 44 47 51 56 62 69
Actual pump ON intervals may vary based on the setting temperature, insulation, and heat loss in the system.
Recirculating Pump
USING YOUR WATER HEATER
Recirculation Pump Control
Recirculation Operation On-Demand mode-
If the On-Demand mode is used, the water heater needs wifi capability.
If the water heater is NOT a WiFi model, you cannot use the On-Demand mode.
To enter On Demand Mode
· Ensure Switch 1 on DIP 2 and switch 4 on DIP 1 are off.
· In less than one minute.
· Turn Switch 1 on DIP 2 on-off-on-off.
· Press the Adjust Button
· The LED will flash one time
The unit is now in on demand mode.
NOTE:
If the water heater does not have WiFi capability, the built-in display needs
to be replaced to the display including wifi capability.
Rheem offers the display including wifi capability.
See the Parts and Accessories catalog for more information.
When set to On-Demand mode, the recirculation pump is ON for 5 minutes when
the water heater receive the signal form the application on smart phone.
Mode setting On-Demand mode-
Please refer to the instruction of WiFi display section.
Recirculation Operation Schedule
mode-
If the Schedule mode is used, the water heater needs wifi capability.
If the water heater is NOT a WiFi model, you cannot use the Schedule mode.
NOTE:
If the water heater does not have WiFi capability, the built-in display needs
to be replaced to the display including wifi capability.
Rheem offers the display including WiFi capability.
See the Parts and Accessories catalog for more information.
When set to Schedule mode, the recirculation pump is ON according the setting
schedule on the application on smart phone
Mode setting Timer mode-
To use Schedule mode, the water heater should be set to Performance mode or
Timer mode.
63
USING YOUR WATER HEATER
Water Saving Control
Water saving control is optional and is inactive as default. To activate this
control, appropriate procedures must be followed. Water saving control can
reduce waste water at initiation of hot water demand by reducing flow until
outlet hot water reaches set temperature. It is recommended to turn ON this
control if the water heater is installed in a drought area or anywhere water
conservation is needed. Follow the steps below to turn ON the water saving
control.
1
Turn off the gas and water to the water heater by closing the shut-off valves.
DIP 2 ON
DIP 1 ON
1234
1234
4
Change the third switch on “DIP 1” to the ON position (UP).
DIP
Switch
ON
ON
2
DIP Switch
1
“MAX” button
1234
1234
“MIN” button
“ADJUST” button
5
Press “Max button”or “Min button” on the control board to set the activation
of this control.
2
Remove the front cover panel on the water heater.
DIP Switch Control Board
3
Find DIP Switch 1 located in the top-middle portion at the control board. The
switch labeled “DIP 1” is the right-most set of switches. If any DIP switches
are on for venting/altitude settings, switch them to the OFF position.
6
LED display on the built-in control shows “oF”.
Within 30 seconds of turning the third switch, press the “Max button” or “Min button” on the control board to set the activation of this control.
Within the next 30 seconds, the display/control board will show the water saving control setting. The LED identifications are below.
WATER SAVING CONTROL
ON
OFF
CONTROL BOARD LED (RED)
Once Flashing
Twice Flashing
DISPLAY LED
ON OF
64
Start/Adjust
USING YOUR WATER HEATER
Water Saving Control
ON
ON
1234
1234
7
After setting the activation of this control, change the third switch on “DIP
1” to the OFF position (DOWN). Be sure to reapply any venting/altitude DIP
switch settings.
8
Replace the front cover panel and turn the remote ON. Turn the remote on
before turning the water supply on.
9
Turn on the gas and water to the water heater by opening the shut-off valves.
Start/Adjust
65
CARING FOR YOUR WATER HEATER
Water Heater Inspections
Venting System (Direct Vent Only)
The venting system should be inspected annually by a qualified service techn
References
- Global Leader and Manufacturer of Heating, Cooling, and Water Heating Products - Rheem Manufacturing Company
- Division of Professional Licensure