BRADFORD WHITE 48384 Ultra High Efficiency Commercial Gas Water Heater User Manual
- June 8, 2024
- Bradford White
Table of Contents
48384 Ultra High Efficiency Commercial Gas Water Heater
ULTRA HIGH EFFICIENCY COMMERCIAL GAS WATER HEATER INSTALLATION & OPERATION
MANUAL
WITH TROUBLESHOOTING GUIDE
WARNING
If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
DO NOT store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
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.
For customer comfort, safety and convenience, it is recommended this water
heater be installed and serviced by a plumbing professional.
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
238-48384-00T REV 12/21
SECTION I: IMPORTANT INFORMATION
READ CAREFULLY
This gas-fired water heater is design certified by CSA International under the
American National Standard, Z21.10.3 (as indicated on the rating plate) and
CAN/CGA 4.3-M (as indicated on the rating plate) available from CSA Standards
Association, 5060 Spectrum Way, Mississauga, Ontario, CANADA L4W 5N6. This
water heater must be installed in accordance with local codes. In the absence
of local codes, it must be installed in compliance with the National Fuel Gas
Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code
(Latest Edition).
The following terms are used throughout this manual to bring attention to the
presence of hazards at various risk levels, or to important information
concerning product life.
DANGER
Indicates an imminently hazardous situation, which, if not avoided, will
result in death, serious injury or substantial property damage.
CAUTION
Indicates potentially hazardous situation, which, if not avoided, may result
in moderate or minor injury or property damage.
WARNING
Indicates a potentially hazardous situation, which, if not avoided, could
result in death, serious injury or substantial property damage.
NOTICE
Indicates special instructions on installation, operation or maintenance,
which are important but not related to personal injury hazards.
NOTICE
This water heater has a limited warranty. The warranty for this water heater
is valid only if the water heater has been installed, maintained, and operated
in accordance with these instructions.
TABLE OF CONTENTS
SECTION I: IMPORTANT INFORMATION………..2 SECTION II: SPECIFICATIONS……………………….5 SECTION III: GENERAL INFORMATION ………….6 SECTION IV: INSTALLATION INSTRUCTIONS..9 SECTION V: WATER CONNECTIONS ………….. 15 SECTION VI: VENTING ………………………………. 17 SECTION VII: GAS CONNECTIONS …………….. 36
SECTION VIII: ELECTRICAL CONNECTIONS..38 SECTION IX: OPERATING INSTRUCTIONS…..41 SECTION X: MAINTENANCE ………………………. 48 SECTION XI: DIAGNOSTIC AND TROUBLESHOOTING GUIDE ………………………. 53 NOTES ………………………………………………………. 59
2
DANGER
DO NOT store or use gasoline or other flammable, combustible, or corrosive
vapors and/or liquids in the vicinity of this or any other appliance.
DO NOT install any damaged venting system components. If damage is evident
then please contact the supplier where the water heater was purchased, or the
manufacturer listed on the rating plate for replacement parts. Use only vent
terminals provided or factory authorized terminals for venting this water
heater.
This water heater is equipped with an adjustable thermostat to control water
temperature. Hot water temperatures required for automatic dishwasher and
laundry use can cause scald burns resulting in serious personal injury and/or
death. The temperature at which injury occurs varies with the person’s age and
the time of exposure There is an increased hazard to disabled persons with
slower response times. NEVER allow small children to use a hot water tap, or
to draw their own bath water. NEVER leave a child or disabled person
unattended in a bathtub or shower.
Failure to properly install the vent and air intake (if applicable) system
could result in property damage, personal injury, or death.
WARNING
Improper installation, adjustments, alteration, service or maintenance can
cause property damage, personal injury or loss of life. Failure to follow all
instructions in the proper order can cause personal injury or death. Read and
understand all instructions, including all those provided with the appliance
before installing, starting-up, operating, maintaining or servicing this
appliance. Keep this manual and literature in legible condition with this
water heater for reference by owner and service technician.
This water heater requires regular maintenance and service to operate safely.
Follow the instructions contained in this manual. Installation, maintenance,
and service must be performed only by a qualified, skilled and knowledgeable
installer or service provider. Installation is not complete unless a
temperature and pressure relief valve is installed into the proper location at
the top of this water heater. It is the responsibility of the installing
contractor to see that all controls are correctly installed and are properly
operating when the installation is complete. This water heater is suitable for
installation on combustible flooring. DO NOT install water heater directly on
carpeting.
DO NOT operate this water heater without first being certain it is filled with
water.
DO NOT tamper with or alter the water heater and/or controls.
DO NOT operate water heater with jumpered or absent controls or safety
devices.
DO NOT operate water heater if any external part has been under water.
Immediately call a qualified service agency to inspect the appliance and to
replace any part of the control system including gas controls, which has been
under water. DO NOT attempt to use this water heater with any gas other than
the type listed on the rating plate. DO NOT attempt to convert this water
heater for use with a gas other than the type for which it is equipped.
Failure to use the proper gas can create an unsafe condition resulting in
property damage, bodily injury, or death. Consult your local gas supplier or
gas company if there are any questions. DO NOT operate this water heater if
the input rate exceeds the rate shown on the water heater rating plate.
This water heater contains very hot water under high pressure. DO NOT unscrew
any pipe fittings nor attempt to disconnect any components of this water
heater without positively assuring the water is cool and is not under
pressure. Always wear protective clothing and equipment when installing,
starting up or servicing this water heater to prevent scald injuries. DO NOT
rely on the temperature gauges to determine the temperature. DO NOT touch any
components unless they are cool.
This water heater must be properly vented and connected to an approved vent
system in good condition. DO NOT operate water heater with the absence of an
approved vent system. A clean and unobstructed vent system is necessary to
allow noxious fumes that could cause injury or loss of life to vent safely and
will contribute toward maintaining the water heater’s efficiency.
3
WARNING
This water heater needs fresh air for safe operation and must be installed so
there are provisions for adequate combustion and ventilation air. Insufficient
air supply will cause a recirculation of combustion products resulting in
contamination that may be hazardous to life. This will result in carboning or
sooting of the combustion chamber, burners, and flue tubes and creates a risk
of asphyxiation. This water heater requires its own separate venting system.
DO NOT connect the exhaust vent into an existing vent pipe or chimney.
Flammable items, pressurized containers or any other potential fire hazardous
articles must never be placed on or adjacent to the water heater. Open
containers of flammable material should not be stored or used in the same room
with this water heater. Insulation blankets are not required for this water
heater. This water heater meets or exceeds the ASHRAE/IES 90.1b (latest
edition) standards with respect to insulation and standby loss requirements.
Hydrogen gas can be produced in an operating water heater that has not had
water drawn from the tank for a long period of time (generally two weeks or
more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open
for several minutes at the kitchen sink before you use any electrical
appliance, which is connect to the hot water system. If hydrogen is present,
there will be unusual sounds such as air escaping through the pipes as hot
water begins to flow. DO NOT smoke or have open flame near the faucet at the
time it is open.
WARNING
Prior to connecting the gas supply line to a gas fired water heater, ensure
that the gas supply line does NOT have moisture/water or dirt/scale inside the
gas line. Commonly this check is done at the lowest point in the gas
distribution system prior to gas burning appliances.
Do NOT use this appliance if any external part to the tank has been submerged
in water. You should contact a qualified service technician to inspect the
appliance and to replace any part of the control system including the
combination gas control which has been submerged in water. See the Gas
Connections section of this manual before servicing or replacing a water
heater that has had any external part to the tank submerged in water.
WARNING
Liquefied petroleum gases/propane gas is heavier than air and will remain at
floor level if there is a leak. Basements, crawl spaces, closets and areas
below ground level will serve as pockets for accumulation of leaking gas.
Before lighting, smell all around the appliance area for gas. Be sure to smell
next to the floor.
IF YOU SMELL GAS: · DO NOT try to light any appliance. · DO NOT touch any
electric switch; DO NOT use any telephone in your building. · Immediately call
your gas supplier from a telephone in another building. Follow the gas
supplier’s
instructions. · If you cannot reach your gas supplier, call the fire
department.
DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED!
NSF Compliance To comply with NSF requirements this water heater must be
sealed to the floor with sealant, in a smooth and easily cleanable way.
4
SECTION II: SPECIFICATIONS
Figure 1 – Dimensional Layout
Table 1 – Specifications
DIMENSIONS (INCHES)
Model No.
Input Rate BTU/h
Storage Capacity
U.S. Gallons
A Height
B Floor to Top of Heater
C Jacket
Dia.
D Floor to
Vent Outlet
E Floor to
Inlet Water Conn.
F Floor to
T&P Valve Conn.
G Floor to Outlet Water. Conn.
60T125 125,000 60
57 48 7/16 28 1/4 5 12 7/8 40 42 1/4
60T150 150,000 60
57 48 7/16 28 1/4 5 12 7/8 40 42 1/4
60T199 199,999 60
57 48 7/16 28 1/4 5 12 7/8 40 42 1/4
100T150 150,000 100 77 5/8 69 7/16 28 1/4 5 12 7/8 60 62 1/4
100T199 199,999 100 77 5/8 69 7/16 28 1/4 5 12 7/8 60 62 1/4
100T250 250,000 100 77 5/8 69 7/16 28 1/4 5 12 7/8 60 62 1/4
100T300 300,000 100 77 5/8 69 7/16 28 1/4 5 12 7/8 60 62 1/4
H Floor to
Air Intake
51 5/8 51 5/8 51 5/8 73 1/8 73 1/8 73 1/8 73 1/8
J Floor to
Gas Conn.
Front Water Conn. Dia.
Space Heating Conn.
Dia.
Gas Conn. Dia.
Relief Valve Open
Shipping Wt.
(LBS)
53 1/4 1 1/2 1 3/4 3/4 570
53 1/4 1 1/2 1 3/4 3/4 570
53 1/4 1 1/2 1 3/4 3/4 570
74 1/4 1 1/2 1 3/4 3/4 900
74 1/4 1 1/2 1 3/4 3/4 900
74 1/4 1 1/2 1 3/4 1
900
74 1/4 1 1/2 1 3/4 1
900
DIMENSIONS (MILLIMETERS)
Model No.
Input Rate KW
Storage Capacity
Liter
A Height
B Floor to Top of Heater
60T125
36.6
60T150
43.9
60T199
58.6
100T150 43.9
100T199 58.6
100T250 73.2
100T300 87.9
227 1448 1231 227 1448 1231 227 1448 1231 379 1972 1764 379 1972 1764 379 1972 1764 379 1972 1764
C Dia.
D Floor to
Vent Outlet
E Floor to
Inlet Water Conn.
F Floor to
T&P Valve Conn.
G Floor to Outlet Water Conn.
718 127 327 1016 1073
718 127 327 1016 1073
718 127 327 1016 1073
718 127 327 1524 1581
718 127 327 1524 1581
718 127 327 1524 1581
718 127 327 1524 1581
H Floor to
Air Intake
1334 1334 1334 1857 1857 1857 1857
J Floor to
Gas Conn.
Front Water Conn. Dia.
Space Heating Conn.
Dia.
Gas Conn.
Dia.
Relief Valve Open.
Shipping. Wt. (KG)
1353 38 25 19 19 259 1353 38 25 19 19 259 1353 38 25 19 19 259 1886 38 25 19 19 408 1886 38 25 19 19 408 1886 38 25 19 25 408 1886 38 25 19 25 408
5
SECTION III: GENERAL INFORMATION
This water heater contains the following features:
Main Power On/Off Switch
The front panel of this water heater has a lighted ON/OFF switch, which is
illuminated when the main power is turned on to indicate power to the water
heater.
Combustion System
This water heater is equipped with a self-compensating negative pressure pre-
mix combustion system. As the blower operates, air is drawn in through the air
intake and into a venturi, which pulls gas from the gas valve. The gas and air
are then mixed in the combustion blower and sent through the transition tube
into the burner. The Direct Spark Ignition System (DSI) then ignites the
gas/air fuel mixture to produce flue products (combustion). The flame sensor
signals the ignition control board (described below), that a flame is present.
ICON System Control
Consists of a control board and a water heater display. An attractive digital
water heater display is on the top front of the water heater for precisely
setting and displaying the temperature setpoint and monitoring the status of
the water heater. Pressing the temperature UP and DOWN buttons changes the
temperature setpoint. The temperature format may be displayed in degrees F or
degrees C. The water heater display will show diagnostic codes in the event
the water heater needs servicing. The temperature readings of the tank sensor
can be monitored in Service Mode. In Service Mode, the display can also show
up to 10 previous error codes to further aid in servicing the water heater.
The single control board has plug in wiring harnesses to reduce the chance of
mis-wiring. The control board controls all ignition, temperature, and
combustion blower functions. The control board controls the combustion blower,
ignition timings, and gas valve to control the combustion system in order to
maintain the desired tank temperature.
Adjustable Thermostat
This water heater is equipped with an adjustable thermostat as part of the
Integrated Control System to control water temperature. Hot water temperatures
required for automatic dishwasher and laundry use can cause scald burns
resulting in serious personal injury and/or death.
The temperature may be adjusted from about 70°F (21°C) to about 180°F (82°C).
The thermostat was adjusted to 70°F (21°C) before the water heater was shipped
from the factory. It is recommended that lower temperatures be used to avoid
the risk of scalding. Refer to the warnings and the section on Scalding in
Section V: Water Connections (page 15). It is further recommended, in all
cases, that the water temperature be set for the lowest temperature, which
satisfies your hot water requirements for the installation. This will also
provide the most energy efficient operation of the water heater and minimizes
scale formation.
Setting the water heater temperature at 120°F (49°C) will reduce the risk of
scalds. Some states require setting lower temperatures for specific
installations.
The top immersion well of the single sensor control also contains a redundant
sensor for the high limit (energy cutoff). The high limit circuit interrupts
the main burner gas flow should the water temperature exceed approximately
207°F (97.2°C). Error code 80 will be shown on the water heater control
display if the high limit temperature has been exceeded.
Should the high limit switch activate, it must be manually reset. This should
only be done by a service technician after the cause of overheating has been
corrected. Refer to the section on Accessing Service Mode on the Display in
the Diagnostic section (page 53).
Contact your qualified installing contractor, service provider or manufacturer
listed on the rating plate if continued high limit operation occurs.
Service Panel
The service panel is located behind the service panel access cover, which is
located by the exhaust elbow near the bottom of the water heater. This panel
contains a pressure switch that monitors the pressure in the exhaust pipe in
case the vent terminal becomes blocked. A collector high limit switch is used
to monitor the ambient temperature between the first pass collector and the
exhaust collector. This is a manually re-settable switch. If this switch
continues to trip, please contact an authorized service agency.
Latches
The latches allow easy access for servicing the water heater from the top.
Simply remove the two latches for servicing and re-latch upon completion. No
tools are required to obtain access to the top of the water heater.
6
General Information continued-
Temperature and Pressure Relief Valve
WARNING
Keep clear of the combination temperature and pressure relief valve discharge
line outlet. The discharge may be hot enough to cause scald injury. The water
is under pressure and may splash.
For protection against excessive temperatures and pressure, install
temperature and pressure protective equipment required by local codes, but not
less than a combination temperature and pressure relief valve certified by a
nationally recognized testing laboratory that maintains periodic inspection of
production of listed equipment or materials as meeting the requirements of the
Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water
Supply Systems, ANSI Z21.22 and the Standard CAN1-4.4 Temperature, Pressure,
Temperature and Pressure Relief Valves and Vacuum Relief Valves. The
combination temperature and pressure relief valve must be marked with a
maximum set pressure not to exceed the maximum working pressure of the water
heater. The combination temperature and pressure relief valve rating must not
be less than the hourly rating of the water heater.
Install the combination temperature and pressure relief valve into the opening
provided and marked for this purpose on the water heater.
Note: Some models may already be equipped or supplied with an installed
combination temperature and pressure relief valve. Verify that the combination
temperature and pressure relief valve is in compliance with local codes. If
the combination temperature and pressure relief valve does not comply with
local codes, replace it with one that does. Follow the installation
instructions above on this page.
Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within 6 in (15.2 cm) above,
or any distance below the structural floor and cannot contact any live
electrical part. The discharge line is to be installed to allow for complete
drainage of both the combination temperature and pressure relief valve and the
discharge line. The discharge opening must not be subjected to blockage or
freezing. DO NOT thread, plug or cap the discharge line. It is recommended
that a minimum clearance of 4 in (10.2 cm) be provided on the side of the
water heater for servicing and maintenance of the combination temperature and
pressure relief valve.
DO NOT place a valve between the combination temperature and pressure relief
valve and the tank.
Condensate Drain
The water heater should either be raised several inches above the floor on a
concrete slab or use a low-profile condensate pump to allow free drainage of
condensate from the elbow drain fitting. This water heater is a condensing
type unit and requires a drain to be located in close proximity to allow the
condensate to drain safely. The condensate drains from the unit at the factory
installed exhaust condensate elbow located near the bottom of the unit. Using
an approved primer and cement (refer to Section VI: Venting, page 17), connect
a 3/4″ elbow or 3/4″ coupling over the outside of the drain outlet and use
3/4″ pipe for the drain trap and condensate line to a drain. Make sure the
condensate drain line slopes down, away from the water heater at least 1/8
in/ft toward the drain. The condensate drainpipe must not be routed through an
area subject to below freezing temperatures. The condensate build-up will
block the exhaust outlet, which will cause improper operation. Refer to Figure
2 for the proper connection of an elbow to the drain outlet and a condensate
trap.
CAUTION
Failure to properly install the condensate drain as directed above, as well as
shown in Figure 2 may result in damage and/or cause improper operation of to
the water heater. Any damage resulting from failure to install the condensate
drain as directed will not be covered by the warranty.
7
General Information continued-
Figure 2 – Condensate Elbow with Trap
Cleanout
All models are equipped with a cleanout opening to aid in removal of hard
water deposits from the tank bottom. If this water heater operates under hard
water conditions, the following should be performed at least every 3 months:
Turn OFF water supply and drain the water heater. Remove the cleanout jacket
cover and tank cover. When cleaning the tank, care must be taken to avoid
trying to break deposits loose as this could damage the glass lining and
shorten the life of the water heater. After cleaning, re-install the cleanout
tank cover and jacket cover, and refill with water. Refer to Section X:
Maintenance (page 48) for the procedures for filling and draining the water
heater.
Powered Anode System
Two powered anodes are used on all models. The powered anode system provides
corrosion protection to the tank by supplying a low voltage current to the
titanium anode rods and then periodically comparing this current with the
potential between the anode rod and tank wall to make corrections. The powered
anode system is designed to extend the tank life without requiring anode rod
replacement. The powered anode system consists of two titanium powered anode
rods located in the front top of the water heater tank and a powered anode
control module located on the right side of the control panel. More details on
the powered anode system are in Section X: Maintenance (page 48).
Dishwashing Machine Requirements
All dishwashing machines meeting the National Sanitation Foundation
requirements are designed to operate with water flow pressures between 15 and
25 lbs./in2. Flow pressures above 25 lbs./in2, or below 15 lbs./in2, will
result in improperly sanitized dishes. The National Sanitation Foundation also
recommends circulation of 180°F (82.2°C) water. Where this is done, the
circulation should be very gentle so that it does not cause any unnecessary
turbulence inside the water heater. The circulation should be just enough to
provide 180°F (82.2°C) water at the point of take-off to the dishwashing
machine. Adjust flow by means of the valve in the circulation line.
8
SECTION IV: INSTALLATION INSTRUCTIONS
WARNING
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A
LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING, GAS
SUPPLY AND ELECTRICAL WORK ARE REQUIRED.
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE
FOLLOWING: · Liquefied petroleum gases/propane gas and natural gas have an
odorant added by the gas supplier that aids in
detection of the gas. · Most people recognize this odor as a “sulfur” or
“rotten egg” smell. · Other conditions, such as “odorant fade” can cause the
odorant to diminish in intensity, or “fade”, and not be as
readily detectable. · If you have a diminished sense of smell or are in any
way unsure of the presence of gas, immediately contact your
gas supplier from a telephone in another building. · Gas detectors are
available. Contact your gas supplier or plumbing professional for more
information. Liquefied petroleum gases/propane gas is heavier than air and
will remain at floor level if there is a leak. Basements, crawl spaces,
closets and areas below ground level will serve as pockets for accumulation of
leaking gas. Before lighting, smell all around the appliance area for gas. Be
sure to smell next to the floor.
IF YOU SMELL GAS: · DO NOT try to light any appliance. · DO NOT touch any
electric switch; DO NOT use any telephone in your building. · Immediately call
your gas supplier from a telephone in another building. Follow the gas
supplier’s instructions. · If you cannot reach your gas supplier, call the
fire department. DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED!
WARNING
This water heater must be located in an area where leakage of the tank, water
line connections, or the combination temperature and pressure relief valve
will not result in damage to the area adjacent to the water heater or to lower
floors of the structure. When such locations cannot be avoided, a suitable
drain pan must be installed under the water heater. The drain pan depth must
be suitable for draining and collecting water and have a minimum length and
width of at least 4 in (10.2 cm) measured from the jacket of the water heater.
The drain pan, as described above, can be purchased from your plumbing
professional. The drain pan must be piped to an adequate drain. The piping
must be at least 3/4 in (2 cm) in diameter and pitched for proper drainage.
Note: Per Section 507.2 Seismic Provisions of the 2021 Uniform Plumbing Code
(UPC). Water heaters shall be anchored or strapped to resist horizontal
displacement due to earthquake motion. Strapping shall be at points within the
upper one-third and lower one-third of its vertical dimensions. At the lower
point, a distance of not less than 4 inches shall be maintained from the
controls with the strapping.
Please refer to the local authority having jurisdiction to see if there are
any additional local requirements regarding seismic provisions.
THIS WATER HEATER MUST BE INSTALLED INDOORS OUT OF THE WIND AND WEATHER.
THIS WATER HEATER MUST NOT BE INSTALLED IN ANY LOCATION WHERE GASOLINE OR
FLAMMABLE VAPORS ARE LIKELY TO BE PRESENT, UNLESS THE INSTALLATION IS SUCH TO
ELIMINATE THE PROBABLE IGNITION OF GASOLINE OR FLAMMABLE VAPORS.
9
Installation Instructions continued-
Unpacking
1. Inspect carefully for any signs of damage. 2. All equipment is carefully
manufactured, inspected and packed. 3. Any claims for damage or shortage in
shipment must be filed immediately with the shipper and noted on the Bill of
Lading. 4. Remove all venting components from the combustion assembly
compartment by removing the latches.
NOTICE
The vent terminals and the condensate elbow that is supplied with this water
heater are stored at the top in the Combustion Assembly Compartment. To access
the vent terminals and condensate elbow, unlatch the top lid and remove parts.
Be sure to replace the top and relatch.
Locate Water Heater
1. Locate water heater in front of final position before removing crate. 2.
LOCATE so that venting connections will be short and direct. 3. THIS WATER
HEATER IS SUITABLE FOR INSTALLATION ON COMBUSTIBLE FLOOR. Do not install this
water heater directly on carpeting. If the water heater is to be installed on
carpeting, it must be installed on top of a metal or wood panel extending
beyond the full width and depth of the appliance by at least three 3 in (7.6
cm) in any direction or, if the appliance is to be installed in an alcove or
closet, the entire floor must be covered by the panel. 4. FOR BASEMENT
INSTALLATION, provide a solid level elevated base such as concrete or other
suitable pad to raise the water heater at least 3 in to provide a slope of 1/8
in to 1/4 in/ft (.32 to .64 cm/m) for the condensate line to a suitable drain.
5. Minimum clearance to combustible material is 0 in (0 cm) for the Top,
Sides, and Rear of this water heater. However, it is recommended that at least
18 in (45.8 cm) from the Top, 24 in (61 cm) from the Front, 4 in (10.2 cm) for
the Left Side and Rear, and 12 in (30.5 cm) from the Right Side Exhaust Elbow
of the water heater be provided for servicing. Clearance for servicing may be
reduced down to minimum clearance to combustible material, but service time
and effort may be greatly increased.
Figure 3a – Minimum Clearance to Combustible Material 10
Installation Instructions continued-
Figure 3b – Recommended Minimum Clearances For Service Access
Remove Crate
1. Remove all banding and pry off crate sides carefully as to NOT damage the
water heater. 2. Carefully roll/lift the water heater from the crate base.
CAUTION
DO NOT drop water heater. DO NOT bump water heater jacket against floor. DO
NOT bump exhaust vent pipe against crate or other objects. This will damage
the heater and cause it to be inoperable or create nuisance problems.
Move Water Heater To Permanent Position
1. Move the water heater to permanent position by sliding or walking. 2.
Place drain pan underneath water heater.
Install Temperature And Pressure Relief Valve (if not already installed)
DANGER
Temperature setting should not exceed safe temperature at fixtures. See water
temperature control warning in Section V: Water Connections (page 15). If
higher preheat temperatures are necessary to obtain adequate booster output,
add an ASSE approved mixing device for hot water supplied to fixtures.
WARNING
Temperature and pressure relief valve discharge piping must be piped near
floor to eliminate potential of severe burns. DO NOT pipe in any area where
freezing could occur. DO NOT install any shut-off valves, plugs or caps to the
temperature and pressure relief valve or piping.
CAUTION
If the building cold water supply has a back-flow preventer, check valve or
water meter with check valve, provisions for thermal expansion of water in the
hot water system must be provided.
11
Installation Instructions continued-
Location
WARNING
KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE MATERIALS, GASOLINE AND
OTHER FLAMMABLE VAPORS AND LIQUIDS.
This water heater must be located in an area where the general public does NOT
have access to set temperatures.
Air Requirements
1. Do NOT obstruct the flow of combustion and ventilating air. 2. For safe
operation, adequate air is needed for combustion and ventilation. Sooting may
result in serious damage
to the water heater and risk of fire or explosion. It can also create a risk
of asphyxiation. Such a condition will often result in a yellow, luminous
burner flame, causing carboning or sooting of the combustion chamber, burner,
and flue tubes.
Mechanical Exhausting Of Room Air
WARNING
Where an exhaust fan is installed in the same room with this water heater and
combustion air is drawn from inside the room, sufficient openings for air must
be provided in the walls. UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRAWN INTO
THE ROOM THROUGH THE WATER HEATER’S VENTING SYSTEM, CAUSING POOR COMBUSTION
THAT MAY BE HAZARDOUS TO LIFE. SOOTING MAY RESULT IN SERIOUS DAMAGE TO THE
WATER HEATER AND RISK OF FIRE OR EXPLOSION, WHICH CAN ALSO CREATE A RISK OF
ASPHYXIATION. Refer to local codes and /or National Fuel Gas Code for proper
air opening sizing.
Unconfined Spaces In unconfined spaces in buildings, infiltration may be
adequate to provide air for combustion, ventilation, and dilution of flue
gases. However, in buildings of tight construction (heavily insulated, weather
stripping, caulked, vapor barrier, etc.) additional air may need to be
provided using the methods described below.
Confined Spaces Confined spaces are spaces defined as having less than 50
ft3/1,000 BTU/hr (4.8 m3/kW) of input.
All Air from Inside the Building: The confined space must be provided with two
permanent openings communicating directly with an additional room(s) of
sufficient volume, so that the combined volume of all spaces meets the
criteria for an unconfined space. The total input of all gas utilization
equipment installed in the combined space must be considered in making this
determination. Each opening must have a minimum free area of 1 in2/1000 BTU/hr
(2200 mm2/kW) of the total input rating of all gas utilization equipment in
the confined space, but not less than 100 in.2 (0.06 m2). One opening must be
within 12 in. (31 cm) of the top and one within 12 in. (31 cm) of the bottom
of the enclosure.
All Air from Outdoors: Provide two permanent openings, one commencing within
12 in. (31 cm) of the top and one commencing within 12 in. (31 cm) from the
bottom of the enclosure. The openings must communicate directly or by ducts
with the outdoors or spaces (crawl or attic) that freely communicate with the
outdoors. 1. When communicating with the outdoors through vertical ducts, each
opening must have a minimum free area of 1
in2/4000 BTU/hr (550 mm2/kW) of total input rating of all equipment in the
enclosure. 2. When communicating with the outdoors through horizontal ducts,
each opening must have a minimum free area of 1
in2/2000 BTU/hr (1100 mm2/kW) of total input rating of all equipment in the
enclosure. 3. When ducts are used, they must be of the same cross-sectional
area as the free area of the openings to which they
connect. The minimum dimension of rectangular air ducts cannot be less than 3
in (8 cm). Provide one permanent opening, commencing within 12 in (31 cm) of
the top of the enclosure. The appliance must have clearance of at least 1 in
(3 cm) from the sides and back and 6 in (16 cm) from the front of the
appliance. The opening must communicate directly or by ducts with the outdoors
or spaces (crawl or attic) that freely communicate with the outdoors and has a
minimum free area of the following: 1. 1 in2/3000 BTU/hr (700 mm2/kW) of the
total input rating of all appliances located in the enclosure. 2. Not less
than the sum of the areas of all vent connectors in the space.
Specially Engineered Installations The requirements noted under Confined
Spaces above will not necessarily govern when special engineering, approved by
the authority having jurisdiction, provides an adequate supply of air for
combustion, ventilation, and dilution of flue gases.
12
Installation Instructions continued-
Chemical Vapor Corrosion
Corrosion of the flue ways and vent system will occur if air for combustion
contains certain chemical vapors. Such corrosion may result in poor combustion
and create a risk of asphyxiation, as well as reducing the life of the water
heater. Spray can propellants, cleaning solvents, refrigerator and air
conditioning refrigerants, swimming pool chemicals, calcium and sodium
chloride, waxes and process chemicals are corrosive. Products of this sort
should not be stored near the water heater or outside by the air intake (if
applicable).
Typical Installation Illustration
CAUTION
If the building cold water supply has a back-flow preventer, check valve or
water meter with check valve provisions for thermal expansion of water in the
hot water system must be provided.
SUGGESTED SUGGESTED
SUGGESTED SUGGESTED
Figure 4 – Typical Front Inlet Connection
Figure 5 – Typical Front Inlet Connect with Storage Heater
SUGGESTED
Figure 6 – Typical Two Water Heater Connection
13
Installation Instructions continued-
SUGGESTED
Figure 7 – Typical Three Water Heater Connection
SUGGESTED
Figure 8 – Typical Four Water Heater Connection
14
SECTION V: WATER CONNECTIONS
WARNING
Failure to install and maintain a new, listed temperature and pressure relief
valve will release the manufacturer from any claim, which might result from
excessive temperature and pressures.
Hydrogen gas can be produced in an operating water heater that has not had
water drawn from the tank for a long period of time (generally two weeks or
more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open
for several minutes at the kitchen sink before you use any electrical
appliance, which is connected to the hot water system. If hydrogen is present,
there will be an unusual sound such as air escaping through the pipes as hot
water begins to flow. DO NOT smoke or have open flame near the faucet at the
time it is open.
Keep clear of the combination temperature and pressure relief valve discharge
line outlet. The discharge may be hot enough to cause scald injury. The water
is under pressure and may splash.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples in front or
side of the water heater. Sweat the tubing to the adapter before fitting the
adapter to the water connections. It is imperative that heat is not applied to
the nipples containing a plastic liner.
Instructions for Connections
1. BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY
VALVE. After shutting OFF the main water supply, open a faucet to relieve the
water line pressure to prevent any water from leaking out of the pipes while
making the water connections to the water heater. The COLD water inlet and HOT
water outlet are identified on the water heater. Make the proper plumbing
connections between the water heater and the plumbing system to the house.
Install a shut-off valve in the cold water supply line.
2. If this water heater is installed in a closed water supply system, such as
the one having a back-flow preventer in the cold water supply, provisions must
be made to control thermal expansion. Do NOT operate this water heater in a
closed system without provisions for controlling thermal expansion. Warranties
do NOT cover damages from thermal expansion such as pressure bulges and/or
deformities. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
3. After installation of the water lines, open the main water supply valve
and fill the water heater. While the water heater is filling, open several hot
water faucets to allow air to escape from the water system. When a steady
stream of water flows through the faucets, close them and check all water
connections for possible leaks.
4. NEVER operate the water heater without first being certain it is filled
with water.
Scalding
This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury. Certain
appliances such as dishwashers and automatic clothes washers may require
increased temperature water. By setting the thermostat on this water heater to
obtain the increased temperature water required by these appliances, you might
create the potential for scald injury. To protect against injury, you should
install an ASSE approved mixing valve in the water system. This valve will
reduce point of discharge temperature by mixing cold and hot water in branch
supply lines. Such valves are available from the local plumbing supplier. The
following chart details the relationship of water temperature and time with
regard to scald injury and may be used as a guide in determining the safest
water temperature for your applications.
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.
Review this instruction manual before setting temperature at water heater.
Feel water before bathing or showering.
Temperature limiting valves are available, contact local plumbing supplier.
15
Water Connections continued-
Table 2 Approximate Time/Temperature Scald Chart
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
120°F (49°C)
More than 5 minutes
125°F (52°C)
1½ to 2 minutes
130°F (54°C)
About 30 seconds
135°F (57°C)
About 10 seconds
140°F (60°C)
Less than 5 seconds
145°F (63°C)
Less than 3 seconds
150°F (66°C)
About 1½ seconds
155°F (68°C)
About 1 second
Alternate Space Heating Water Connections
DANGER
Toxic chemical, such as those used for boiler treatment, must not be
introduced into potable water used for space heating. This water heater must
not be connected to an existing heating system or component(s) previously used
with a nonpotable water heating appliance. All piping components connected to
this water heater for space heating applications must be suitable for use with
potable water.
WARNING
When the system requires water for space heating at temperatures higher than
required for other uses, a means such as an ASSE approved mixing valve shall
be installed to temper the water for those uses in order to reduce scald
hazard potential. Failure to properly pipe this water heater may result in
improper operation and damage to the water heater or structure. Oxygen
contamination of this water heater will cause corrosion of iron and steel
components and can lead to water heater failure.
Connect the system supply and return piping to the water heater.
Refer to Figure 9 and Figure 10 for installation examples. Maintain a minimum
1/2 in clearance from hot water piping to combustible materials.
Figure 9 – Alternate Space Heating Connections
16
Water Connections continued-
SUGGESTED
SUGGESTED
SUGGESTED
Figure 10 – Typical Plumbing Schematic for Zoned Heating
SECTION VI: VENTING
This water heater has a certified category IV, per latest ANSI Z
21.10.3-2019.CSA 4.3-2019 revision. Refer to the latest edition of the
National Fuel Gas Code (ANSI Z223.1-latest edition), or in Canada, the Natural
Gas and Propane installation Code (B149.1-00 latest edition).
WARNING
The vent system must be properly installed. Failure to properly install the
vent system could result in property damage, personal injury, or death. DO NOT
install damaged venting system components. If damage is evident then please
contact the supplier where the water heater was purchased, or the manufacturer
listed on the rating plate for replacement parts. Use only the vent terminals
provided or factory authorized terminals for venting this water heater. The
water heater requires its own separate venting system. DO NOT connect the
exhaust vent into an existing vent pipe or chimney. All of the exhaust venting
connections must be leak checked with a soap solution upon initial start-up of
the water heater. Any leaks must be repaired before continuing operation of
the water heater. DO NOT terminate the venting where noise from the exhaust or
intake will be objectionable. This includes locations close to or across from
windows and doors. Avoid anchoring the vent and intake pipes directly to
framed walls, floors, or ceilings unless rubber isolation pipe hangers are
used. This prevents any vibrations from being transmitted into the living
spaces. DO NOT exceed the venting distances or the number of elbows listed in
this manual. Exceeding the maximum venting distances may cause the water
heater to malfunction or cause an unsafe condition. DO NOT operate this water
heater until the venting installation is complete and the piping completed.
Failure to complete installation before operation can result in property
damage, personal injury, or death.
WARNING
Risk of carbon monoxide poisoning or fire due to joint separation or pipe
breakage. This water heater must be properly vented and connected to an
approved vent system in good condition. DO NOT operate water heater with the
absence of an approved vent system. A clean and unobstructed vent system is
necessary to allow noxious fumes that could cause injury or loss of life to
vent safely and will contribute toward maintaining the water heater’s
efficiency. The acceptance of the venting system is dependent upon full
compliance with these installation instructions. For installations in Canada,
the venting system must NOT pass through rated fire separations. The venting
system must be free to expand and contract. This venting system must be
supported in accordance with these instructions.
17
Venting continued-
NOTICE
For installations in Canada, field supplied vent piping must comply with
CAN/CGA B149.1 (latest edition) and be certified to the Standard For Type BH,
Class II, 65°C, Gas Venting Systems, ULC S636. Components of this listed
system shall not be interchanged with other vent systems or unlisted
pipe/fittings. All components and specified primers and cements of the
certified vent system must be from a single system manufacturer and not
intermixed with other system manufacturer’s vent system parts. The supplied
vent connector and vent termination are certified under ULC S636 and are also
certified as part of the water heater. Refer to the following tables for
approved venting materials, primers, and cements. All approved primers and
cements are to be used within their marked time limitations.
Approved Venting Materials
For installations in the US only
For installations in CANADA
· PVC DWV (ASTM D-2665) · PVC Sch. 40 (ASTM-D1785) · CPVC Sch. 40 (ASTM-F441, ASTM-D2846) · PVC and CPVC (UL 1738, ULC S636) · ABS Sch. 40 DWV (ASTM-D2661) · Polypropylene (UL 1738, ULC S636) · Stainless Steel (UL 1738, ULC S636)
· ULC S636 approved PVC for flue gas venting rated Class II, 65°C
· ULC S636 approved CPVC for flue gas venting rated Class II, 65°C
· ULC S636 approved Polypropylene for flue gas venting rated Class II, 65°C
· Stainless Steel (ULC S636)
Approved Primers and Cements
For installations in the US only
For installations in CANADA
· PVC and CPVC Primer (ASTM-F656) · PVC Cement (ASTM D-2564) · CPVC Cement (ASTM F493) · ABS Primer and Cement (ASTM D-2235)
· ULC S636 approved Primer and Cement for flue gas venting rated Class II, 65°C
NOTICE
Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel®
(polyphenosulfone) in non-metallic venting systems is prohibited and covering
non-
metallic venting with thermal insulation is prohibited.
NOTICE
Before beginning installation of any vent pipe, read the vent pipe
manufacturer’s installation instructions. DO NOT install the water heater in
any location where the ambient temperature may fall below freezing. Water
heater must be protected from freezing downdrafts during shutdown periods.
Provide protection of the building materials from degradation by flue gases
from the exhaust vent terminal.
CAUTION
Check to make sure flue gases DO NOT recirculate into the air intake terminal
when using direct venting. If the water heater is having service issues, flue
recirculation may be a contributing factor. Even when the minimum vent
terminal separation distances are followed, recirculation may still occur
depending upon the location outside the building, the distance from other
buildings, proximity to corners, weather conditions, wind patterns, and snow
depth. Periodically check to make sure that flue recirculation is not
occurring. Signs of flue gas recirculation include frosted or frozen intake
terminals, condensate in the intake terminal and venting system, oxidation or
white chalk material on the flame sensor or igniter shield. Correction to flue
recirculation may involve angling the intake away from the exhaust terminal,
increasing the distance between them, relocating the air intake to another
side of the building, or using inside air for combustion. Check to be sure the
intake and exhaust terminals are not obstructed, especially during periods of
below freezing weather.
18
Venting continued-
CAUTION
All intake and exhaust venting components must have the same diameter size. DO
NOT use a different size on the intake and exhaust venting. For 2 in (5.1 cm)
or 4 in (10.2 cm) venting, use the supplied 3 in (7.6 cm) vent terminals. If a
2 in (5.1 cm) vent terminal is preferred, use 2 in (5.1 cm) terminal (p/n
239-39831-00). This terminal is available from your supplier. Be sure the
condensate runs freely to a drain and does NOT accumulate inside the water
heater. In cold climates, precautions may need to be taken to ensure that the
condensate drain does not freeze. Make sure the condensate trap or drain loop
is installed to prevent flue gases from being discharged into the room. High
levels of dust and debris such as road and construction dust, insects, and
tree pollen may clog the burner resulting in poor performance and damage to
the water heater. Avoid air intake locations where debris can be created such
as exhaust ventilation hoods, gravel parking lots, and near outdoor spotlights
that attract bugs. For these installations, an air intake filter kit (p/n
239-47330-00) is available as an accessory service part from the installer of
this water heater. The air intake filter kit is NOT designed to filter out
airborne contaminants or chemicals that may damage the water heater.
CAUTION
The vent shall terminate a minimum of 12 in (30 cm) above expected snowfall
level to prevent blockage of vent termination. The horizontal centerline of
the exhaust vent terminal (if applicable) must NOT be located lower than the
horizontal centerline of the air intake terminal if vented through the same
wall. A service drain loop must be installed in the drain tubing to serve as a
condensate trap to prevent flue gases from escaping into the room.
DO NOT position the air intake above the exhaust terminal.
NEVER locate the air intake where exhaust gases can be introduced.
Venting
The venting instructions must be followed to avoid restricted combustion or
recirculation of flue gases. Such conditions cause sooting or risks of fire
and asphyxiation. This water heater can be installed as either a direct vent
system or power vent (air from inside) system. If it is installed as a direct
vent system, then the air intake and the exhaust vent are piped to the
outside. If a power vented system is used, then air is drawn from inside and
only the exhaust is piped to the outside. Determine which system is best for
your application and install as described in the following sections.
Direct Vent Installation
Venting may be run horizontally through an outside wall or vertically through
a roof through using either 2 in (5.1 cm), 3 in (7.6 cm), 4 in (10.2 cm), or 6
in (15.2 cm) diameter pipe. This water heater is supplied with a screened
intake elbow and exhaust coupling referred to as the air intake terminal and
the exhaust vent terminal.
WARNING
The 100T250 and 100T300 models are NOT approved for 2 in diameter vent pipe.
Venting with 2 in pipe on these models may result in damage to the water
heater or cause an unsafe condition. DO NOT use 2 in vent or air intake pipe
on 100T250/300 models.
Direct Vent Terminal Location
Plan the vent system layout so that proper clearances are maintained from
plumbing and wiring. Before the vent is installed, determine the vent pipe
termination location as shown in Figure 11.
NOTICE
The air intake and exhaust terminals may be located on separate outside walls
or one terminal may exit the roof while the other is through the wall. The
total combined equivalent vent length must be within the limits specified in
the venting tables and the intake length cannot exceed the exhaust by more
than 30 ft. The minimum recommended vent separation distance between the
intake and exhaust terminals is 36 in. Local conditions may require a need for
greater vent separation distances.
19
NOTICE
If 2 in (5.1 cm) pipe is used, then use a 2 in to 3 in reducer to adapt to the
3 in (7.6 cm) vent terminal size. If a 2 in (5.1 cm) vent terminal is
preferred, this terminal is available from your supplier.
Figure 11a – Vent Terminal Clearances (Other than Direct Vent or Powered Direct Vent Installations)
Clearance above A= grade, veranda,
porch, deck or balcony
Clearance to B= window or door that
may be opened
Clearance to C= permanently closed
window
Vertical clearance to ventilated soffit located above the D= terminal within a
horizontal distance of 2 feet (61 cm) from the center line of the terminal
Clearance to E= unventilated soffit
F= Clearance to outside corner
Canadian Installations1
12 inches (30 cm) 6 in (15cm) for appliances 10,000 Btuh (3kW); 12 in (30 cm)
for appliances >10,000 Btuh (3kW) and 100,000 Btuh (30kW); 36 in (91 cm) for
appliances >100,000 Btuh (30 kW)
b
b
b
b
US Installations2
12 inches
(30 cm)
H=
4 feet (1.2 m) below or to the side of opening; I= 12 inches (30 cm) above opening
*b
J=
*b
K=
*b
L=
*b
M=
Clearance to each side of center line extended above meter/regulator assembly
Clearance to service regulator vent outlet or oil tank vent
Clearance to nonmechanical air supply inlet to building or the combustion air
inlet to any other appliance
Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved driveway located on public property
Clearance under a veranda, porch, deck, or balcony
Canadian Installations1
3 feet (91 cm) within a height 15 feet (4.6 m) above the meter/regulator
assembly
36 inches (91 cm)
6 in (15cm) for appliances 10,000 Btuh (3kW); 12 in (30
cm) for appliances >10,000 Btuh (3kW) and 100,000 Btuh
(30kW); 36 in (91 cm) for appliances >100,000 Btuh (30
kW)
6 feet (1.83 m)
7 feet (2.13 m)
12 inches (30 cm)
US Installations2
b
b
4 feet (1.2 m) below or to side
of opening; 12 inches (30
cm) above opening.
3 feet (91 cm) above if within
10 feet horizontally
7 feet (2.13 m)
*b
G= Clearance to inside corner
36 inches (91 cm) *a
36 inches (91 cm) *a
1 In accordance with the current CAN/CGA-B149 Installation Codes. 2 In
accordance with the current ANSI Z223.1-(Latest Edition)/NFPA 54 National Fuel
Gas Code. A vent shall not terminate directly above a sidewalk or paved
driveway that is located between two single-family dwellings and serves both
dwellings. Permitted only if a veranda, porch, deck or balcony is fully open
on a minimum of two sides beneath the floor. a) A minimum clearance value
determined by testing in accordance with section 2.20. b) “Clearance in
accordance with local installation codes and the requirements of the gas
supplier”.
20
Clearance above A= grade, veranda,
porch, deck or balcony Clearance to B= window or door that may be opened
Clearance to C= permanently
closed window
Vertical clearance to ventilated soffit located above the D= terminal within a
horizontal distance of 2 feet (61 cm) from the center line of the terminal
E= Clearance to unventilated soffit
F= Clearance to outside corner
G= Clearance to inside corner
Figure 11b – Direct Vent and Powered Direct Vent Terminal Clearances
Canadian Installations1
US Installations2
Canadian Installations1
12 inches (30 cm)
12 inches (30 cm)
Clearance to each side of H= center line extended above
meter/regulator assembly
6 in (15cm) for appliances 10,000 Btuh (3kW); 12 in
(30 cm) for appliances >10,000
Btuh (3kW) and 100,000 Btuh (30kW); 36 in (91 cm) for appliances >100,000 Btuh
(30
kW)
6 in (15 cm) for appliances 10,000 I= Btuh (3 kW); 9 in (23 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)
Clearance to service regulator vent outlet or oil tank vent
Clearance to non-
*b
*b
J= mechanical air supply inlet
to building or the
combustion air inlet to any
other appliance
3 feet (91 cm) within a height 15 feet (4.6 m)
above the meter/regulator
assembly
36 inches (91 cm)
6 in (15cm) for appliances 10,000 Btuh (3kW); 12 in (30 cm) for appliances
10,000 Btuh (3kW) and 100,000 Btuh (30kW); 36 in (91 cm)
for appliances >100,000 Btuh (30 kW)
US Installations2
b
b
6 in (15 cm) for appliances 10,000 Btuh (3 kW); 9 in (23 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)
12 inches (30 cm) *a
12 inches (30 cm) *a
Clearance to a mechanical K= air supply inlet
6 feet (1.83 m)
3 feet (.91 m) above if within 10 feet (3.1
m) horizontally
12 inches (30 cm) a
b
36 inches (91 cm) *a
12 inches (30 cm) a
b
36 inches (91 cm) *a
Clearance above paved sidewalk or paved driveway L= located on public property
M= Clearance under a veranda, porch, deck, or balcony
7 feet (2.13 m)
12 inches (30 cm)
*b
12 inches (30 cm)
1 In accordance with the current CAN/CGA-B149 Installation Codes. 2 In
accordance with the current ANSI Z223.1-(Latest Edition)/NFPA 54 National Fuel
Gas Code.
A vent shall not terminate directly above a sidewalk or paved driveway that is
located between two single-family dwellings and serves both dwellings.
Permitted only if a veranda, porch, deck or balcony is fully open on a minimum
of two sides beneath the floor. a) A minimum clearance value determined by
testing in accordance with section 2.20.
b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.
21
Venting continued-
The vent system must terminate so that proper clearances are maintained as
cited in local codes or the latest edition of the National Fuel Gas Code, ANSI
Z223.1: 1. Do not terminate near soffit vents or crawl space or other area
where condensate or vapor could create a nuisance or
hazard or cause property damage. 2. Do not terminate the exhaust vent terminal
where condensate or vapor could cause damage or could be detrimental
to the operation of regulators, relief valves, or other equipment. 3. Do not
terminate the exhaust vent terminal over public area or walkways where
condensate or vapor can cause
nuisance or hazard. 4. The vent shall terminate a minimum of 12 in above
expected snowfall level to prevent blockage of vent termination. 5. The
manufacturer requires the centerline distances between the air intake and
exhaust vent terminals to be a
minimum of 36 in (91.4 cm) apart and the exhaust terminal must extend 6 in
(15.2 cm) past the air intake terminal.
Vent pipes serving power vented appliances are classified by building codes as
“vent connectors”. Required clearances from combustible materials must be
provided in accordance with information in this manual under LOCATION OF WATER
HEATER and CLEARANCES, and with National Fuel Gas Code and local codes.
Clearance to combustibles for all venting pipes and terminals
For installations in the US 0″ minimum
For installations in the CANADA Refer to vent pipe and terminal
manufacturer’s installation instructions for clearances to combustibles.
DO NOT place insulation or other materials in the required clearance spaces between the venting to combustible material unless otherwise specified.
Horizontal Installation
In a horizontal application, it is important that condensate not be allowed to
buildup in the exhaust vent pipe. To prevent this from happening, the pipe
should be installed with a slight upward slope so the condensate will run back
toward the water heater. The vent system must be supported every 5 ft of
vertical run and every 3 ft of horizontal run of vent pipe length.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result
in damage to the water heater or venting system.
Stress levels in the pipe and fittings can be significantly increased by
improper installation. If rigid pipe clamps are used to hold the pipe in
place, or if the pipe cannot move freely through a wall penetration, the pipe
may be directly stressed, or high thermal stresses may be formed when the pipe
heats up and expands. Install accordingly to minimize such stresses. Follow
the following procedure for direct venting through the wall: 1. Cut two 2 1/2
in (6.4 cm) diameter holes for 2 in (5.1 cm) diameter pipe, two 3 1/2 in (8.9
cm) diameter holes (for 3 in
(7.6 cm) diameter pipe), two 4 1/2 in (11.4 cm) diameter holes (for 4 in (10.2
cm) diameter pipe), or two 6 5/8 in (15.5 cm) diameter holes (for 6 in (15.2
cm) diameter pipe) in the wall with the centerline hole distances at least 36
in (91.4 cm) apart in the location where the exhaust vent and air intake
terminals will exit the outside wall if vented on the same wall.
2. Use the proper cement to secure the exhaust vent and air intake terminals
provided with the water heater to the pipes. The distance between the back
edge of the exhaust vent terminal and the exterior wall (see Figure 12) must
be 6 in (15.2 cm) more for the exhaust vent terminal than the air intake
terminal. Use the proper cement or sealant and assembly procedures to secure
the vent connector joints between the terminal and the blower outlet. Provide
support brackets for every 3 ft (.92 m) of horizontal vent beyond the intake
terminal.
22
Venting continued-
WARNING! DO NOT USE 2″ VENT WITH 100T250/300 MODELS
Figure 12 – Typical Horizontal Direct Vent System
Vertical Installation
Vertical venting system must be supported every 5 ft of vertical run and every
3 ft of horizontal run of vent pipe length.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result
in damage to the water heater or venting system. Stress levels in the pipe and
fittings can be significantly increased by improper installation. If rigid
pipe clamps are used to hold the pipe in place, or if the pipe cannot move
freely through a wall penetration, the pipe may be directly stressed, or high
thermal stresses may be formed when the pipe heats up and expands. Install
accordingly to minimize such stresses. Follow the following procedure for
direct venting through the roof: 1. Cut the necessary holes through the roof
and ceiling. Cut two 2 3/8 in (6 cm) diameter holes for 2 in (5.1 cm)
diameter pipe, two 3 1/2 in (8.9 cm) diameter holes (for 3 in (7.6 cm)
diameter pipe), two 4 1/2 in (11.4 cm) diameter holes (for 4 in (10.2 cm)
diameter pipe), or 6 5/8 in (15.5 cm) diameter holes (for 6 in (15.2 cm)
diameter pipe) in the ceiling and roof. 2. Install the exhaust vent and air
intake plastic pipes as shown in Figure 13. Make sure that the installation
meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest
Edition) or CGA/CAN B149 Installation Code.
23
Venting continued-
WARNING! DO NOT USE 2″ VENT WITH 100T250/300 MODELS
Figure 13 – Typical Vertical Direct Vent System Installation
(Note: Intake and exhaust terminals may be on different outside walls.)
Through the Wall Venting with Low Ground Clearance:
When venting cannot exit through the wall at a height greater than or equal to
12 in (30.5 cm) (and above expected snow level) from the ground, then the
installation must be modified as shown below (see Figure 14). Refer to Tables
3 or 4 for maximum venting lengths using 2 in (5.1 cm), 3 in (7.6 cm), 4 in
(10.2 cm), or 6 in (15.2 cm) diameter plastic pipe.
WARNING! DO NOT USE 2″ VENT WITH 100T250/300 MODELS.
Figure 14 – Vent Terminal (Low Ground Clearance)
24
Venting continued-
Maximum Vent Length
Table 3 – Maximum Vent Length (Combined Maximum Length for Intake and Exhaust)
2″ Vent Pipe
Max. Intake Length
Max. Exhaust Length
60T125
Power Direct Vent 15 ft
(4.5 m) 15 ft
(4.5 m)
Power Vent
N/A 30 ft (9.2 m)
60T150
100T150
Power Direct Vent
Power Vent
15 ft (4.5 m)
N/A
15 ft
30 ft
(4.5 m)
(9.2 m)
60T199
100T199
Power Direct Vent
Power Vent
15 ft (4.5 m)
N/A
15 ft
30 ft
(4.5 m)
(9.2 m)
3″ Vent Pipe
Max. Intake Length
Max. Exhaust Length
4″ Vent Pipe
Max. Intake Length
Max. Exhaust Length
60T125
100T150
Power
Power
Direct Vent
Vent
60 ft (18.3 m)
N/A
60 ft
120 ft
(18.3 m)
(36.5 m)
Power Direct Vent
85 ft (25.9 m)
85 ft (25.9 m)
Power Vent
N/A
170 ft (51.8 m)
60T150
100T199
Power
Power
Direct Vent Vent
50 ft (15.2 m)
N/A
50 ft
100 ft
(15.2 m) (30.5 m)
Power Direct Vent
75 ft (22.8 m)
75 ft (22.8 m)
Power Vent
N/A
150 ft (45.7 m)
60T199
100T250
Power
Power
Direct Vent Vent
40 ft (12.2 m)
N/A
40 ft
80 ft
(12.2 m) (24.3 m)
Power Direct Vent
65 (19.8 m)
65 (19.8 m)
Power Vent
N/A
130 (39.6 m)
100T300
Power Direct Vent
30 ft (9.2 m)
30 ft (9.2 m)
Power Vent
N/A
60 ft (18.3 m)
Power Direct Vent
55 (16.7 m)
55 (16.7 m)
Power Vent
N/A
110 (33.5 m)
6″ Vent Pipe Max. Intake
Length Max. Exhaust
Length
6″ Vent Pipe Max. Intake
Length Max. Exhaust
Length
60T125
Power Direct Vent
85 (25.9 m)
85 (25.9 m)
Power Vent
N/A
170 ft (51.8 m)
100T199
Power Direct Vent
75 (22.8 m)
75 (22.8 m)
Power Vent
N/A
150 (45.7 m)
60T150
Power Direct Vent
75 (22.8 m)
75 (22.8 m)
Power Vent
N/A
150 (45.7 m)
100T250
Power Direct Vent
65 (19.8 m)
65 (19.8 m)
Power Vent
N/A
130 (39.6 m)
60T199
Power Direct Vent
65 (19.8 m)
65 (19.8 m)
Power Vent
N/A
130 (39.6 m)
100T300
Power Direct Vent
60 (18.3 m)
60 (18.3 m)
Power Vent
N/A
120 (36.6 m)
100T150
Power Direct Vent
85 (25.9 m)
85 (25.9 m)
Power Vent
N/A
170 (51.8 m)
WARNING
The 100T250 and 100T300 models are not approved for 2 in (5.1 cm) diameter
vent pipe. Venting with 2 in (5.1 cm) pipe on these models may result in
damage to the water heater or cause an unsafe condition. DO NOT use 2 in (5.1
cm) vent or air intake pipe on 100T250/300 models.
Note: The venting distance shown in the chart above is the combined maximum
distance for the intake and exhaust pipe and elbows. The intake and exhaust
vent terminals may be in different locations (i.e., different walls or one
wall, one roof) provided the intake equivalent venting distance does not
exceed the exhaust by more than 30 ft (9.2 m).
25
Venting continued-
Determining Required Vent Length
1. Determine the total length of straight vent pipe (in feet) required for
both the intake and the exhaust. 2. Add 5 ft of venting for every 90° elbow.
3. Add 2 1/2 ft of venting for every 45° elbow. 4. Total vent length cannot
exceed “Max Vent Length” in Table 3. 5. Air intake cannot exceed exhaust by
more than 30 ft in any venting situation.
Example of Total Direct Vent Length for 100T199
A 3 in venting system has a total of six 90° elbows and a total straight pipe
length of 65 ft (includes both intake and exhaust pipe). Equivalent vent
length for elbows: 6 x 5 ft = 30 ft. Total equivalent vent distance = 65 ft +
30 ft = 95 ft total equivalent vent length. This is below the maximum allowed
distance of 100 ft for this model using 3 in vent.
Example of Total Vent Length For 100T199 With A Power Vented Installation
A 3 in venting system has a total of six 90° elbows and a total straight pipe
length of 55 ft. Equivalent vent length for elbows: 6 x 5 ft = 30 ft. Total
equivalent vent distance = 55 ft + 30 ft = 85 ft total equivalent vent length.
This is below the maximum allowed distance of 100 ft for this model using 3 in
vent.
NOTICE
DO NOT include the 3 in (7.6 cm) condensate elbow or vent terminals in
determining maximum vent length.
Power Vent Installation
Power venting is where the indoor air is used and the exhaust is vented to the
outside. Venting may be run horizontally through an outside wall or vertically
through a roof through using either 2 in (5.1 cm), 3 in (7.6 cm), 4 in (10.2
cm), or 6 in (15.2 cm) diameter pipe. This water heater is supplied with a 3
in (7.6 cm) diameter screened intake elbow and exhaust coupling referred to as
the air intake terminal and the exhaust vent terminal.
Power Vent Terminal Location
Refer to the “Direct Vent Terminal Location” section previously mentioned to
determine the proper exhaust vent location. Plan the vent system layout so
that proper clearances are maintained from plumbing and wiring. Vent pipes
serving power vented appliances are classified by building codes as “vent
connectors”. Required clearances from combustible materials must be provided
in accordance with information in this manual under LOCATION OF WATER HEATER,
and CLEARANCES, and with National Fuel Gas Code and local codes.
Clearance to combustibles for all venting pipes and terminals
For installations in the US 0″ minimum
For installations in the CANADA
Refer to vent pipe and terminal manufacturer’s installation instructions for
clearances to combustibles.
DO NOT place insulation or other materials in the required clearance spaces between the venting to combustible material unless otherwise specified.
Horizontal Installation
In a horizontal application, it is important that condensate not be allowed to
buildup in the exhaust vent pipe. To prevent this from happening, the pipe
should be installed with a slight upward slope of 1/4 in/ft. The vent system
must be supported every 5 ft (1.5 m) of vertical run and every 3 ft (.92 m) of
horizontal run of vent pipe length.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result
in damage to the water heater or venting system.
Stress levels in the pipe and fittings can be significantly increased by
improper installation. If rigid pipe clamps are used to hold the pipe in
place, or if the pipe cannot move freely through a wall penetration, the pipe
may be directly stressed, or high thermal stresses may be formed when the pipe
heats up and expands. Install accordingly to minimize such stresses.
Follow the following procedure to vent through the wall: 1. Cut one 2 3/8 in
(6 cm), diameter hole (for 2 in (5.1 cm) diameter pipe), one 3 1/2 in (8.9 cm)
diameter hole (for 3 in
(7.6 cm) diameter pipe) one 4 1/2 in (11.5 cm) diameter hole (for 4 in (10.2
cm) diameter pipe) or one 6 5/8 in (15.5 cm) diameter hole (for 6 in (15.5 cm)
diameter pipe). 2. Use the proper cement or sealant to secure the exhaust vent
terminal provided with the water heater to the plastic pipes. The distance
between the back edge of the exhaust vent terminal and the exterior wall (see
Figure 15) must be 6 in (15.2 cm). Use the proper cement and assembly
procedures to secure the vent connector joints between the terminal and the
blower outlet. Provide support brackets for every 3 ft (1 m) of horizontal
vent.
26
Venting continued-
WARNING! DO NOT USE 2″ VENT WITH 100T250/300
MODELS.
Figure 15 – Typical Horizontal Power Vent System Vertical Installation
Vertical venting must be supported every 5 ft of vertical run and every 3 ft
of horizontal run of vent pipe length. Stress levels in the pipe and fittings
can be significantly increased by improper installation. If rigid pipe clamps
are used to hold the pipe in place, or if the pipe cannot move freely through
a wall penetration, the pipe may be directly stressed, or high thermal
stresses may be formed when the pipe heats up and expands. Install accordingly
to minimize such stresses.
CAUTION
Failure to properly support the vent piping with hangers and clamps may result
in damage to the water heater or venting system.
Follow the following procedure to vent through the roof:
1. Cut the necessary holes through the roof and ceiling. Cut one 2 3/8 in (6
cm), diameter hole (for 2 in (5.1 cm) diameter pipe), one 3 1/2 in (8.9 cm)
diameter hole (for 3 in (7.6 cm) diameter pipe) one 4 1/2 in (11.5 cm)
diameter hole (for 4 in (10.2 cm) diameter pipe) or one 6 5/8 in (16.5 cm)
(for 6 in (15.2 cm) diameter pipe).
2. Install the exhaust vent and air intake plastic pipes as shown in Figure
16. Make sure that the installation meets the local codes and/or The National
Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code.
Figure 16 – Typical Vertical Power Vent System Installation
27
WWAARRNNIINNGG!!
DODONONTOUT SUESE2″ 2V”EVNETNWT WITHITH
EF1010T0T25205/03/030/0399
MODELS .
Venting continued-
Through The Wall Venting With Low Ground Clearance
When venting cannot exit through the wall at a height greater than or equal to
12 in (30.5 cm) (and above expected snow level) from the ground, then the
installation must be modified as shown below (see Figure 17). Refer to Tables
3 or 4 for maximum venting lengths using 2 in (5.1 cm), 3 in (7.6 cm), 4 in
(10.2 cm), or 6 in (15.2 cm) diameter plastic pipe.
WARNING! DO NOT USE 2″ VENT WITH 100T250/300
MODELS.
Figure 17 – Vent Terminal (Low Ground Clearance)
Figure 18 – Multiple Intake/Exhaust Terminal Separation Distances
NOTE: When installing multiple intake/exhaust terminals on the same wall of a
building, the nearest intake terminal must be at least 5 ft (1.5 m) from the
nearest exhaust terminal. Spacing requirements are the same for roof
installation.
28
Venting continued-
Concentric Vent Terminal Installation Procedure
WARNING
Improper installation, adjustment, service, or maintenance can cause property
damage, personal injury, or death. Consult a qualified installer, service
agency, or the gas supplier for information or assistance. This kit must be
used only for terminating this water heater. DO NOT use this termination kit
for any other appliance. Using this kit on other appliances and/or water
heaters can result in property damage, personal injury, or death. DO NOT
operate this water heater until the installation and assembly of this kit is
complete and the piping completed. Failure to complete installation before
operation can result in property damage, personal injury, or death. Before
beginning any installation, be sure the main electrical disconnect switch is
in the OFF position. Electrical shock can cause personal injury or death. DO
NOT operate this water heater with the rain cap removed or recirculation of
combustion products may occur. Water may also collect inside larger
combustion-air pipe and flow to the burner assembly. Failure to follow this
warning could result in product damage, or improper operation, personal injury
or death.
CAUTION
DO NOT use field-supplied couplings to extend pipes. Airflow restriction will
occur, and the water heater pressure switches may cause intermittent problems.
Vertical Installation (recommended)
Table 4 Approved IPEX Concentric Terminals
Description
Bradford White IPEX System Part Number (1738 or 636)
2″ Concentric Termination
239-44069-02
636
2″ Concentric Termination
—
1738
3″ Concentric Termination
239-44069-01
636
3″ Concentric Termination
—
4″ Concentric Termination
—
4″ Concentric Termination
—
1738 636 1738
IPEX Part Number 196005 (PVC), 197040 (CPVC)
397005 196006 (PVC), 197009 (CPVC)
397006 196021 (PVC), 197021 (CPVC)
397021
1. Become familiar with the concentric vent terminals listed in Table 4.
Refer to instructions inside concentric vent kit. Refer to the previous
section on determining the maximum venting distance and pipe diameter required
for the installation.
WARNING
The 100T250 and 100T300 models are NOT approved for 2 in (5.1 cm) diameter
vent pipe. Venting with 2 in (5.1 cm) pipe on these models may result in
damage to the water heater or cause an unsafe condition. DO
NOT use 2 in (5.1 cm) vent or air intake pipe on 100T250/300 models.
29
Venting continued-
Figure 19 – Dimensional Layout of Concentric Vent Kits
Concentric Vent Size 2 in 3 in 4 in
(A) Nominal Pipe Size 2 in 3 in 4 in
(B) in inches 3 ½ in 4 ½ in 6 5/8 in
Figure 20 – Concentric Vent Kit Part Identification
Concentric Vent Size 2 in 3 in 4 in
(A) in inches 2 in 3 in
4 ½ in
(B) in inches 3 ½ in 4 ½ in 6 5/8 in
2. Determine the best location for the termination kit. 3. Cut the
recommended 3 ½ in (8.9 cm) diameter hole for 2 in (5.1 cm) vent termination,
6 5/8 in (16.9 cm) diameter
hole for 4 in (10.2 cm) vent termination, or 4 ½ in (11.5 cm) for 3 in (7.6
cm) vent termination.
4. Partially assemble vent kit by performing the following: a. Cement
concentric Y fitting to larger diameter pipe (see Figure 20). b. Cement rain
cap to smaller diameter pipe (see Figure 21).
Figure 21 – Rain Cap to Small Vent Pipe Assembly
30
Venting continued5. Install concentric Y fitting and pipe assembly through the
structure’s hole and field-supplied roof boot/flashing. Do not
allow insulation or other materials to accumulate inside pipe assembly when
installing through the hole. 6. Secure assembly to roof structure as shown in
Figure 22 using field-supplied metal strapping or equivalent support
material.
NOTICE
Ensure termination height is above the roof surface or anticipated snow level
(see Figure 22). If assembly is too short to meet height requirements, the two
pipes supplied in the kit may be replaced by using the same diameter pipe. DO
NOT extend the overall dimension by more than 60 in (see Figure 19). 7.
Install rain cap and small diameter pipe assembly in roof penetration
assembly. Ensure small diameter pipe is cemented and bottomed in Y concentric
fitting. 8. Cement heater combustion-air and vent pipes to concentric y
fitting assembly (see Figure 20). See Figure 22 for proper pipe attachment. 9.
Operate heater through one cycle to ensure combustion-air and vent pipes are
properly connected and sealed to concentric vent termination connections.
Figure 22 – Concentric Vent Roof Top Attachment
Horizontal Installation
1. Become familiar with the approved coaxial vent kits from IPEX, as shown in
Table 4 and Figures 20 through 22.
WARNING
The 100T250 and 100T300 models are not approved for 2 in (5.1 cm) diameter
vent pipe. Venting with 2 in (5.1 cm) pipe on these models may result in
damage to the water heater or cause an unsafe condition. DO NOT use 2 in (5.1
cm) Vent or Air Intake Pipe on 100T250/300 models. 2. Determine the best
location for the termination kit.
NOTICE
Position termination where vent vapors will NOT damage plants/shrubs or air
conditioning equipment. Position termination where vent vapors will NOT be
adversely affected by wind condition. Position termination where it will NOT
be damaged or be subjected to foreign objects. Position termination where
vapors will NOT be objectionable.
31
Venting continued-
3. Cut the recommended 3 ½ in (8.9 cm) diameter hole for 2 in (5.1 cm) vent
terminations, 6 5/8 in (16.9 cm) diameter hole for 4 in (10.2 cm) vent
termination, or 4 ½ in (11.5 cm) for 3 in (7.6 cm) vent termination.
4. Partially assemble vent kit. a. Cement Y concentric fitting to larger
diameter kit pipe (see Figure 20). b. Cement rain cap to smaller diameter kit
pipe (see Figure 21).
5. Install concentric Y fitting and pipe assembly through the structure’s
hole and field-supplied roof boot/flashing. Do NOT allow insulation or other
materials to accumulate inside pipe assembly when installing through the hole.
6. Install rain cap and small diameter pipe assembly in concentric Y fitting
and large pipe assembly. Ensure small diameter pipe is cemented and bottomed
in concentric Y fitting.
7. Secure assembly to structure as shown in Figure 23. Ensure clearances as
shown in Figure 24.
8. Cement heater combustion-air and vent pipes to concentric Y fitting
termination assembly. See Figure 24 for proper pipe attachment.
9. Operate heater through one cycle to ensure combustion-air and vent pipes
are properly connected and sealed to concentric vent termination connections.
Figure 23A – Concentric Vent Side Wall Attachment
WARNING! DO NOT USE 2″ VENT WITH 100T250/300 MODELS.
(A) VENT DIAMETER
2 in (5.1 cm) 3 in (7.6 cm)
4 in (10.2 cm)
(B) DIMENSION
MIN 12 in (30.5 cm) 12 in (30.5 cm) 12 in (30.5 cm)
MAX 40 in (101.6 cm) 44 in (111.8 cm) 37 in (94 cm)
Figure 23B Concentric Vent Acceptable Dimensions
32
Venting continued-
Low Profile Side Wall Termination Kit
The IPEX Low Profile side wall termination kits are fully certified for use
with IPEX product only. IPEX System 636 PVC Low Profile vent kits are made
from certified compound and IPEX System 1738 PVC Low Profile vent kits are
made from a UL1738 certified PVC compound. Both are rated to a maximum
temperature of 149°F (65°C).
The vent termination must maintain all termination clearances and be installed
in accordance with local building codes and/or The National Fuel Gas Code ANSI
Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code (see Figure 24).
Each kit contains: 1 Base (two holes), 1 Cap (one hole), 8 Stainless Steel
Screws, and 4 Plastic Anchors.
Table 5 Approved IPEX Low Profile Terminals
Description 2″ Low Profile
Pipe O.D. 2.375″
Hole Spacing (ctr to ctr)
5.6″
IPEX System (1738 or 636)
636
IPEX Part Number
196984
2″ Low Profile
2.375″
5.6″
1738
397984
3″ Low Profile
3.5″
5.6″
636
196985
3″ Low Profile
3.5″
5.6″
1738
397985
4″ Low Profile
4.5″
5.6″
636
196986
4″ Low Profile
4.5″
5.6″
1738
397086
WARNING
When locating the penetration of the vent and air pipe, ensure the termination
is properly oriented as shown in Figure 25 and ensure that it maintains
minimum clearance requirements as shown in Figure 24. For multiple vent
terminations, ensure that a minimum clearance of 12 in (30 cm) is maintained
between edge of air inlet and adjacent vent outlet and that all vent pipes and
air inlets terminate at the same height to avoid the recirculation of flue
gases and the possibility of causing severe personal injury, death, or
substantial property damage (see Figure 27).
CAUTION
When installing the vent termination in a vertical configuration, ensure the
vent piping is located above the air inlet piping. This will avoid the risk of
flue gas products recirculating into the air inlet and building.
Installation Procedure
1. Once the proper location has been determined, cut 2 holes in the wall
large enough to accommodate the pipe. Pipe
diameters and distance between hole centers can be found in Table 5.
2. Slide both the intake and vent pipe through the holes. Solvent weld both
pipes to the base of the vent termination kit
(see Figure 24).
3. To fasten the base to the wall, use the supplied screws and anchors. A
3/16 in (5 mm) diameter, 1/16-3/16 in (2-5
mm) deep hole will need to be drilled for the anchors. Locate the anchor hole
by using the base as a template and then drill the required holes.
4. Screw the cap to the base using the supplied screws.
5. Once the vent termination and pipes are secured, the wall penetrations
will need to be sealed from the interior using a
PVC compatible material.
33
Venting continued-
Figure 24 Typical Side Wall Termination
Figure 26 Side Wall Termination Assembly
Figure 25 Approved Installation Orientation
Figure 27 Minimum Clearances: Multiple Side Wall Terminations
34
Vent Pipe Preparation
WARNING
DO NOT attempt to start this water heater until vent pipe solvent fumes
completely clear from the room and inside the vent piping.
Vent Pipe Preparation and Joining
Most failures in vent systems result from improper preparation and joining of
pipe and fittings. The guidelines below must be followed when installing the
venting system. If you have any question about the application or installation
of the venting system, contact the vent pipe manufacturer, supplier, or your
plumbing professional. 1. Specific cleaners, solvents, primers and cements are
available for PVC, CPVC, and ABS pipe. Be sure these
materials match the type of pipe to be installed. The vent pipe manufacturers
joining instructions must be followed in all cases. Never use all-purpose
cements, commercial glues and adhesives or ABS cement to join PVC or CPVC pipe
and fittings. Refer to the table at the beginning of the “Venting” section for
approved primers and cements. a. CLEANERS, SOLVENTS, PRIMERS AND CEMENTS ARE
FLAMMABLE. Do not store or use these
materials near heat or open flame, or in the vicinity of other appliances. 2.
Use proper cutting, deburring and applicator tools to ensure proper
preparation and joining of pipe and fittings.
a. Cutting Tools i. A square cut must be achieved with a miter box saw or pipe
cutter to ensure a proper mating with the female. If a pipe cutter is used,
the burr created at the outer edge of the pipe must be removed.
b. Deburring Tools i. A file, knife or plastic deburring tool can be used to
remove burrs. Burrs must be removed from the inside and outside edges of the
pipe to ensure a proper seal.
c. Applicator Tools i. A natural bristle paintbrush or roller may be used to
apply cement. Prompt application of the cement is important due its fast
drying properties.
3. Inspection, Cleaning, Priming and Cementing a. Inspect the pipe inside and
out for dirt, dust, moisture or grease etc. Check pipe and fittings for splits
or cracks and replace if found. b. Clean pipe and fittings are imperative for
proper joining. Following cutting and deburring, wipe away any foreign
material with a clean dry rag. If wiping fails to thoroughly clean surfaces,
chemical cleaning is necessary. c. Primer must be applied to the pipe surface
and fitting socket with a natural bristle brush. This serves to soften and
prepare the pipe for cementing. d. Cementing must be done quickly to avoid
over-drying before joining. i) Apply one coat to the outside end of the pipe
at a width slightly greater than the depth of the socket. ii) Apply a coat
around the inside of the fitting socket. iii) Apply a second coat around the
end of the pipe.
4. Joining a. Joints should be made immediately after cement is applied. b.
After fully inserting pipe into fitting socket, hold joint together for about
15 to 20 seconds. c. Remove excess cement from around pipe and fitting with a
clean rag. d. Cement drying times may vary. Be sure to allow for the
recommended drying time before disturbing joints.
For more specific and detailed information about the above, contact the vent
pipe manufacturer, supplier, or competent professional.
SAFETY PRECAUTION: PRIMERS AND CEMENTS ARE EXTREMELY FLAMMABLE AND MUST NOT BE
STORED OR USED NEAR HEAT OR OPEN FLAME. ALSO, USE ONLY IN A WELL VENTILATED
AREA.
35
SECTION VII: GAS CONNECTIONS
WARNING
Connect this water heater ONLY to the type of gas as shown on the rating
plate. Use clean black iron pipe or equivalent material approved by local
codes and ordinances (dirt and scale from the pipe can enter the gas valve and
cause it to malfunction). The inlet gas line must have at least a 3 in (7.6
cm) drip leg (sediment trap) installed as close to the water heater’s gas
valve as possible. A ground joint union must be installed in the gas supply
line, as close to the water heater as possible, to permit servicing of the
water heater. Compounds used on the threaded joints of the gas piping must be
resistant to the action of liquefied petroleum gases/propane gas. DO NOT apply
pipe dope to the gas valve inlet and make certain that no pipe dope has become
lodged in the inlet screen of the gas valve. Extreme care must be taken to
ensure no pipe dope enters the gas valve and to avoid excessive torque when
tightening the gas supply line to the gas valve. Excessive torque may result
in cracking of the gas valve housing. The suggested maximum torque is 31.5 ft
lbs. (4.4 kg-m). The manufacturer of this water heater will not be liable for
any damage or injury caused as a result of a cracked gas inlet as a result of
excessive torque. This water heater and its gas connection must be leak tested
before placing the water heater in operation. Check for gas leaks with a soap
and water solution and a brush or a commercial leak detector fluid. NEVER USE
A MATCH OR OPEN FLAME FOR TESTING! The water heater is not intended for
operation at higher than 14 in. water column (½ psi) supply gas pressure.
Higher gas supply pressures require supplemental reducing service regulation.
Exposure to higher gas supply pressure may cause damage to the gas controls,
which could result in fire or explosion. If overpressure has occurred such as
through improper testing of gas lines or emergency malfunction of the supply
system, the gas valve must be checked for safe operation. Make sure that the
outside vents on the supply regulators and the safety vent valves are
protected against blockage. These are parts of the gas supply system, not the
water heater.
CAUTION
The water heater and individual shutoff valve must be disconnected from the
gas supply piping system during any pressure testing of the system at test
pressures in excess of ½ psi (3.5 kPa). The water heater must be isolated from
the gas supply piping system by closing its manual shutoff valve during any
pressure testing of the gas supply system at test pressures equal to or less
than ½ psi (3.5 kPa). The supply line must be capped when not connected to the
water heater. If copper supply lines are used, they must be internally tinned
and certified for gas service.
SUGGESTED
Figure 28 – Drip Leg
The gas supply lines must meet all requirements of the National Fuel Gas Code
ANSI Z223.1 (Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code
(Latest Edition).
36
Gas Connections continued-
Gas Meter Size Natural Gases Only
Be sure that the gas meter has sufficient capacity to supply the full rated
gas input of the water heater as well as the requirements of all other gas
fired equipment supplied by the meter. If the gas meter is too small, ask the
gas company to install a larger meter having adequate capacity.
Gas Pressure Regulation
Main line gas pressure to the water heater should be between a maximum 14 in
water column and a minimum supply pressure as shown on the rating plate. The
inlet gas pressure must not exceed the maximum value. In some installations, a
regulator sized for the input rating of the water heater will need to be
installed just ahead of the inlet gas connection to the water heater to reduce
excess gas pressure or surges in gas pressure.
BEFORE PLACING THE WATER HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. USE SOAP
AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THE PURPOSE OF LOCATING
GAS LEAKS.
WARNING
DO NOT use matches, candles, flame or other sources of ignition for this
purpose.
37
SECTION VIII: ELECTRICAL CONNECTIONS WARNING
Turn OFF or disconnect the electrical power supply to the water heater before
servicing. Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation. Verify proper
operation after servicing. All electrical wiring must be installed and
grounded in accordance with local codes, or in the absence of local codes, the
National Electrical Code, ANSI/NFPA 70 and/or CSA C22.2 Electrical Code. The
water heater must be wired to a 120 VAC, 60 Hz, 15A power supply. The water
heater must be wired on a separate circuit and breaker. If a flexible line
cord and plug is permitted by local code, then provide a three wire grounding
type receptacle within reach of the line cord provided on the control box. DO
NOT plug the line cord into a receptacle that can have the power supply
interrupted by a switch that is used to control lights or another appliance.
If wiring in conduit is required, cut the line cord close to the control board
and make the appropriate wiring connections. Install an electrical conduit
connector on the outside jacket of the water heater. Refer to the wiring
diagram for the correct connections to each wire lead.
CAUTION
This water heater must be wired on a separate circuit. Failure to wire on a
separate circuit may cause improper operation or failure of the electrical
components of the water heater. DO NOT energize the electric circuit before
the water heater tank is filled with water. This controller is polarity
sensitive. If the Hot and Neutral Supply voltage is reversed, the controller
will not sense flame and the water heater will not operate. Verify polarity
before connecting the water heater.
Figure 29 – Wiring Diagram and Schematic
38
Building Management System (BMS)
The water heater can be equipped with a gateway kit that will facilitate a
Building Management System (BMS) connection to Modbus or Bacnet®. This kit is
sold separately and is not factory installed. A full installation, operation,
and troubleshooting manual is provided with the gateway kit.
CAUTION
Before beginning any Troubleshooting operations listed below, please note that
the gateway kit and BMS may need to be disconnected from the heater. Please
ensure this has been completed before proceeding with any troubleshooting
operation that may be impacted by settings in the BMS.
BMS Mapping
Map Descriptor Name
Demand source
Firing rate Fan speed Flame signal Tank temperature
sensor Appliance setpoint
Burner status
Lockout code Appliance status DHW priority count Burner run time Controller
cycle count Controller run time
Alarm reason DHW setpoint
Modbus Register
00006
00008 00009 00010 00012 00017
00032
00034 00080 00082 00130/00131 00142/00145 00144/00145 0035 0453
Read/Write
Read
Read Read Read Read Read
Read
Read Read Read Read Read Read Read Read/Write
BACnet Object
ID
001
002 003 004 005 006
007
008 009 010 011 012 013 014 015
Note
Current demand source: 0 = Unknown 1 = No source demand 2 = CH 3 = DHW 4 =
Lead Lag slave 5 = Lead Lag master 6 = CH frost protection 7 = DHW frost
protection 8 = No demand due to burner switch (register 199) turned off 9 =
DHW storage 10 = Reserved 11 = Warm weather shutdown 12 = Hot standby
Actual firing rate (% or RPM)
RPM
0.01V or 0.01 µA precision (0.00-50.00V)
-40°-130° (0.1°C precision)
-40°-130° (0.1°C precision) 0 = Disabled 1 = Locked out 2-3 = Reserved 4 = Anti-short cycle 5 = Unconfigured safety data 6-33 = Reserved 34 = Standby Hold 35 = Standby Delay 0 = No lockout 1-4096 0 = Unknown 1 = Disabled 2 = Normal 3 = Suspended Countdown of time when DHW has priority over CH (secs). Applicable when DHW priority time is enabled.
Hours
0-999,999
Hours
0 = None 1 = Lockout 2 = Alert 3 = Other
40°-130° (0.1°C precision)
39
BMS Wiring Diagram
NOTICE
The Building Management System (BMS) is only compatible with units that have
SOLA controllers.
Part BMS Gateway Installation Kit
Bradford White Part Number 415-53943-00
40
SECTION IX: OPERATING INSTRUCTIONS
WARNING
Water heaters are heat-producing appliances. To avoid damage or injury there
must be no materials stored against the water heater or direct vent system,
and proper care must be taken to avoid unnecessary contact (especially by
children) with the water heater and direct vent system. UNDER NO CIRCUMSTANCES
SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR
STORED IN THE VICINITY OF THIS WATER HEATER OR IN ANY LOCATION FROM WHICH
FUMES COULD REACH THE WATER HEATER. Installation or service of this water
heater requires ability equivalent to that of a licensed tradesman in the
field involved. Plumbing, air supply, venting, gas supply and electrical work
are required. Light the unit in accordance with the operating instructions
label attached to the water heater. Under no circumstances should the input
rate exceed the input rate shown on the water heater rating plate. Over firing
could result in damage or sooting of the water heater. If the unit is exposed
to the following, do not operate water heater until all corrective steps have
been made by a factory authorized independent service contractor or qualified
service professional.
1. Flooding to or above the level of the burner or controls 2. External
firing 3. Damage 4. Firing without water 5. Sooting NEVER OPERATE THE WATER
HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE
AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE
WATER HEATER.
General Instructions
To Fill The Water Heater
1. Close the water heater drain valve. This water heater utilizes a ball
valve; when closing the valve, the stem will spin indefinitely. Confirm it is
closed by ensuring the slot on the stem is perpendicular to the valve body. If
alternative water connections are provided but not used, make certain they are
plugged (i.e. space heating & alternate top connections).
2. Open the cold water supply shut-off valve. 3. Open several hot water
faucets to allow air to escape from the system. 4. When a steady stream of
water flows from the faucets, the water
heater is filled. Close the faucets and check for water leaks at the water
heater drain valve, combination temperature and pressure relief valve and the
hot and cold water connections.
Sequence Of Operation
1. Thermostat starts with heating cycle 2. Blower ON 3. Blower pre-purge 4.
Spark rod sparks to the burner and gas valve opens burner ignition 5. Main
burner ON 6. Flame signal confirmed 7. Thermostat satisfied 8. Gas valve
closes – Main burner OFF 9. Blower post-purge
41
Lighting & Shutdown Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
A. This appliance does not have a pilot. It is equipped with an ignition
device which automatically lights the burner. Do not try to light the burner
by hand.
B. BEFORE OPERATING smell all around the appliance for gas. Be sure to smell
next to the floor because some gas is heavier than air and will settle on the
floor.
WHAT TO DO IF YOU SMELL GAS: Do not try to light any appliance. Do not touch
any electric 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. C. Turn off main power to the water heater. D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.
LIGHTING INSTRUCTIONS
1. STOP! read the safety information above on this label.
2. Set the thermostat to lowest setting. 3. Turn off all electrical power to
the
appliance. 4. This appliance does not have a pilot.
It is equipped with an ignition device which automatically lights the burner.
Do not try to light the burner by hand.
5. Turn off the main power switch. 6. Wait (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 next step. 7. Turn on main power. 8.
Set the thermostat to desired setting.
“GREEN LIGHTED” MAIN POWER SWITCH
TEMPERATURE UP TEMPERATURE DOWN
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off the main power switch.
Figure 30 – Lighting Instruction Label
42
Temperature Adjustment
Table 5 Approximate Time/Temperature Scald Chart
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
120°F (49°C)
More than 5 minutes
125°F (52°C)
1½ to 2 minutes
130°F (54°C)
About 30 seconds
135°F (57°C)
About 10 seconds
140°F (60°C)
Less than 5 seconds
145°F (63°C)
Less than 3 seconds
150°F (66°C)
About 1½ seconds
155°F (68°C)
About 1 second
CAUTION
This water heater, when set at a lower temperature setting, is NOT capable of
producing hot water of sufficient temperature for sanitizing purposes.
This water heater is equipped with an energy cut out device to prevent
overheating. Should overheating occur or the gas supply fails to shut off,
turn OFF the control panel power switch to the appliance and call a qualified
service agency.
NOTICE
The lower the temperature setting, the greater the energy efficiency, both to
heat the water and to maintain the storage temperature during standby periods.
Lower water temperatures also extend tank life. Remember, no water heating
system will provide exact temperatures at all times. Allow a few days of
operation at this setting to determine the correct temperature setting
consistent with the requirements for the installation.
The water heater temperature setting is adjusted by using the control display
mounted to control surround jacket of the water heater. The water heater
thermostat is set at the lowest setpoint of 70F (21C) when shipped from the
factory. The control display shows the temperature setpoint in degrees
Fahrenheit (F) or degrees Celsius (C), and the status of the water heater
(“Idle” or “Heating”). If the water heater is functioning normally, the
display will also show “Operational”.
For energy efficient operation of your water heater, the suggested initial
temperature setting is 120F (49C). During the winter season, or any cold
period, you may desire a higher temperature setting to adjust for the colder
incoming water. This adjustment, however, may cause additional condensation to
form on the cooler tank surface. This does not mean the tank is leaking.
During summer months, the warmer incoming water temperatures will benefit the
performance of your water heater and reduce the amount of condensation
developed.
Condensation does not mean your tank is leaking. Most of reported tank leaks
on installation are proven to be condensation. To avoid unnecessary
inconvenience and expense, make sure the tank is leaking before calling an
independent servicing contractor or qualified service professional.
If the water heater is to remain idle for 30 days or more or is subjected to
freezing temperatures while shut off, the water heater and piping should be
fully drained, and the drain valve should be left fully open. Refer to the
“General Operation” section of this Installation and Operation Manual for the
procedure on draining the water heater.
DANGER
Hotter water increases the risk of scald injury. Scalding may occur within 5
seconds at a temperature setting of 140°F (60°C). To protect against hot water
injury, install an ASSE approved mixing valve in the water system. This valve
will reduce point of discharge temperature by mixing cold and hot water in
branch water lines. A licensed plumbing professional or local plumbing
authority should be consulted.
WARNING
If the water heater display does not show “Operational” in the “Status”
indicator, there may be an operating malfunction with the water heater. If
this is the case, a numeric code will be displayed. Refer to the label next to
the display for the definition of the error code and call your plumbing
professional or service agent to service the water heater. DO NOT try to reset
the water heater without having a qualified service person to diagnose and
correct the problem. If the display is blank or does not show an error code,
make sure there is power to the water heater.
43
WARNING
Setting the water temperature to the maximum set point can result in scalding
hot water delivered to the faucets. It is highly recommended that the maximum
setpoint be adjusted to the lowest temperature possible for the needs of the
installation. See following section to change the maximum setpoint limit (max
setpoint). Make sure the water heater control display is not in a public area
that can result in the temperature settings being improperly adjusted. See
previous warning on scalds and an ASSE approved mixing valve.
NOTICE
When the maximum setpoint is reached, the display will show “Max Setpoint”
without the setpoint value. The maximum setting is equal to approximately
180°F (82°C). The default temperature setpoint from the factory is 70°F
(21°C).
44
Display Control
Water Heater Display and Control Buttons
ICON System Control Only
To Increase Temperature Setpoint Step 1. Press and hold “Temperature Up”
button until desired setpoint temperature appears on the display.
Step 2. Press “DONE” button for new setting to take effect immediately. If the
“DONE” button is not pressed, the new temperature setting will take effect in
approximately 10 seconds.
45
To Decrease Temperature Setpoint Step 1. Press and hold “Temperature Down”
button until desired setpoint temperature appears on the display.
Step 2. Press “DONE” button for new setting to take effect immediately. If the
“DONE” button is not pressed, the new temperature setting will take effect in
approximately 10 seconds.
To View Combustion Rate Step 1. Select Next while viewing DHW Setpoint in User
Mode to access Rate screen. Rate will only be
displayed while the burner is operating.
Step 2. Select Next to go back to the DHW Setpoint screen.
46
To Change Temperature Format in Display from F to C or °C to °F Step 1. Enter
“Set-Up Mode” by pressing both UP/DOWN buttons together for 3 seconds. Step 2.
Use the arrows to select between °F and °C
Step 3. Press done to return to main screen or timeout/change will occur in
one minute.
An energy cut out (ECO) is incorporated in the sensor and control board which
will shut off all gas supply to the burner if the water heater temperature
exceeds 207°F (93°C). Should the ECO function (open), the water temperature
should be reduced to approximately 120°F (49°C) and call a qualified service
agent to place the water heater in operation. The water heater must have the
problem corrected by a qualified service person before putting the water
heater back in operation. It is recommended that all service work be performed
by a qualified service agency. If the water heater is to remain idle for 30
days or more or is subjected to freezing temperatures while shut off, the
water heater and piping should be fully drained (See “To Drain the Water
Heater”) and the drain valve should be left fully open.
WARNING
Hydrogen gas can be produced in an operating water heater that has not had
water drawn from the tank for a long period of time (generally two weeks or
more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open
for several minutes at the kitchen sink before you use any electrical
appliance which is connected to the hot water system. If hydrogen is present,
there will be an unusual sound such as air escaping through the pipes as hot
water begins to flow. DO NOT smoke or have open flame near the faucet at the
time it is open.
WARNING
DO NOT run out of propane gas. Damage to the water heater may occur.
47
SECTION X: MAINTENANCE
DO NOT attempt to repair gas valve. DO NOT attempt to repair ignition module. DO NOT attempt to repair venturi. DO NOT attempt to repair thermostat board. DO NOT attempt to repair transformer. DO NOT attempt to repair pressure switch.
DANGER
General
NOTE: KEEP APPLIANCE AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE
AND OTHER FLAMMABLE VAPORS AND LIQUIDS.
Water heater maintenance includes periodic tank flushing and cleaning, and
removal of lime scale. The unit should be inspected and adjusted to maintain
proper combustion. Refer to Table 5, Suggested Maintenance Schedule (next
page). A periodic inspection of the venting system should be made.
Burner Flame Check
At the time of installation and at monthly intervals, a visual check of the
burner flames should be made to determine if they are burning properly. The
main burner may be seen through the sight glass window on the front of the
combustion insert mounting bracket (see Figure 31). The burner flames should
be a blue flame near the burner surface in a uniform flame pattern. Occasional
yellow or white streaks are normal.
Figure 31 – Sight Glass Location
48
Maintenance Schedule
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there
must be no materials stored against the water heater or vent-air intake
system, and proper care must be taken to avoid unnecessary contact (especially
by children) with the water heater and vent-air intake system. UNDER NO
CIRCUMSTANCES SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE
USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR
IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER OR VENT-AIR
INTAKE SYSTEM.
IMPORTANT
The water heater should be inspected at a minimum annually by a qualified
service technician for damaged components and/or joints not sealed. DO NOT
operate this water heater if any part is found damaged or if any joint is
found not sealed.
The following are instructions for performing some of the recommended maintenance. Unit inspection and adjustment should be performed by a qualified technician.
Service Interval
1 Month:
1 Year:
Table 6 – Suggested Maintenance Schedule
Component
Tank Condensate Line Powered Anode
System
Relief Valve
Vent & Air Intake System
Vent Terminals
Combustion System
Operation
Sediment removal Inspect & clean
Check LED/inspect rods
Function test
Inspect
Free of blockage & debris
Inspect & clean
Action
Drain off several gallons of water.
Clear drainline and trap, verify proper pitch.
1st year: check rods to determine service interval; check LED annually.
Operate lever, inspect for blockage or corrosion.
Inspect joint seals/vent supports; clean air filter accessory kit if used.
Clear intake and exhaust terminals, clean terminal screens.
Clean flame sensor, igniter, & inspect burner.
Flushing Water Heater
1. Turn OFF the water heater electrical disconnect switch. 2. Open the drain
valve and allow water to flow until it runs clean. 3. Close the drain valve
when finished flushing. 4. Turn ON the water heater electrical disconnect
switch.
Draining Water Heater
The water heater must be drained if it is to be shut down and exposed to
freezing temperatures. Maintenance and service procedures may also require
draining the water heater.
1. Turn OFF the water heater electrical disconnect switch. 2. Connect a hose
to the drain valve. 3. Locate hose discharge in an area where hot water will
not cause any damage or injury. 4. Close the cold water inlet valve to water
heater. 5. Open a nearby hot water faucet to vent the system. 6. Open the
heater drain valve. 7. If the water heater is being drained for an extended
shutdown, it is suggested the drain valve be left open during
this period.
49
Maintenance Schedule continued-
Filling Water Heater
1. Close the water heater drain valve. This water heater utilizes a ball
valve; when closing the valve, the stem will spin indefinitely. Confirm it is
closed by ensuring the slot on the stem is perpendicular to the valve body. If
alternative water connections are provided but not used, make certain they are
plugged (i.e. space heating & alternate top connections).
2. Open the cold water supply shut-off valve. 3. Open several hot water
faucets to allow air to escape from the system. 4. When a steady stream of
water flows from the faucets, the water heater is filled. Close the faucets
and check for
water leaks at the water heater drain valve, combination temperature and
pressure relief valve and the hot and cold water connections.
Sediment and Lime Scale Removal
Waterborne impurities consist of the particles of soil and sand, which settle
out and form a layer of sediment on the bottom of the tank. The amount of
calcium carbonate (lime) released from water is in direct proportion to water
temperature and usage. The higher the water temperature or water usage, the
more lime deposits are dropped out of the water. This is the lime scale, which
forms in pipes, water heaters and on cooking utensils. Lime accumulation not
only reduces the life of the equipment but also reduces efficiency of the
water heater and increases fuel consumption. The usage of water softening
equipment greatly reduces the hardness of the water. However, this equipment
does not always remove all of the hardness (lime). For this reason, it is
recommended that a regular schedule of deliming be maintained. The depth of
the buildup should be measured periodically. Water heaters will have about 3
in of lime buildup when the level of lime has reached the bottom of the
cleanout opening or about 1 inch of lime buildup if it has reached the drain
valve opening. A schedule for deliming should be set up, based on the amount
of time it would take for a 1/2 in buildup of lime. For example, if an initial
inspection shows a 1/2 in of lime accumulation, the water heater can be
delimed once a year.
To Remove Sediment and Lime Scale
1. Drain the heater. Refer to Draining The Water instructions in this
section. 2. Remove outer cover plate from lower side of water heater jacket.
3. Remove cover and gasket from cleanout opening. 4. Remove lime, scale or
sediment using care not to damage the glass-lining. 5. Inspect cleanout plate
gasket: Replace gasket if necessary (contact local distributor for correct
part number). 6. Install gasket and cleanout plate. Be sure to draw plate up
tight by tightening screws securely. 7. Close the drain valve. Open a hot
water fixture to allow air to escape. Open the cold water supply to water
heater
and allow the tank to fill. Follow the lighting instructions. 8. Check for
water leakage. 9. Install outer jacket cover plate.
50
Maintenance Schedule continued-
Powered Anode System
All models are equipped with a powered anode system. The powered anode system
provides corrosion protection to the tank by supplying a low voltage current
to the titanium anode rods and then periodically comparing this current with
the potential between the anode rod and tank wall to make corrections. The
powered anode system is designed to extend the tank life without requiring
anode rod replacement. The powered anode system consists of two titanium
powered anode rods (31 7/8 in (81 cm) long), located in the front top of the
water heater tank, and the powered anode control module located on the right
side of the control panel. In addition, there is one additional magnesium
anode rod (non-powered) located under the top flue collector for additional
back-up protection. The powered anode rod must have the electrical power
supply connected at all times in order to provide corrosion protection to the
water heater tank. If the electrical supply to the water heater is to be off
for an extended period of time, the water heater must be drained. Turning off
the lighted switch on the front panel to shut off the water heater will not
turn off the powered anode system, as long as the line cord is plugged in and
the breaker is left on. The powered anode control module is located on the
right vertical side of the control panel inside the surround panel. The
control has a LED indicator light to show the status of operation. When the
tank is filled with water and the power supply is on to the water heater, the
light should have a steady green glow to indicate that protection current is
flowing and operating normally. If the indicator light is not glowing, the
power supply to the water heater or powered anode system is disconnected.
Check the power supply or wire connections to the powered anode control. If
the control is flashing red, then there is a malfunction with the powered
anode system. Make sure there are no bare spots in the wire insulation to the
powered anode rods. Check all electrical connections. The powered anode rods
are insulated from the water heater tank in the bushing. With an ohmmeter,
check continuity between the powered anode terminal and the bushing. There
should not be continuity. If there is continuity, replace the powered anode
assembly.
Figure 32 – Powered Anode Locations
Drain Valve and Tank Access Panel
The water heaters are equipped with a 3/4 in drain valve. An access panel
covers the cleanout opening in the tank, which is sealed by a gasket and
cover.
51
Maintenance Schedule continued-
Relief Valve
At least twice a year, the temperature and pressure relief valve should be
checked to ensure that it is in operating condition. To check the relief
valve, lift the lever at the end of the valve several times. The valve should
seat properly and operate freely.
If water does not flow, remove and inspect for obstructions or corrosion.
Replace with a new valve of the recommended size as necessary. A thorough
inspection of the valve should be performed at least every three years by
removing the temperature and relief valve from the tank. DO NOT attempt to
repair the valve, as this could result in improper operation and a tank
explosion. In areas with poor water conditions, it may be necessary to inspect
the T&P valve more often than the recommended maintenance schedule.
CAUTION
Before manually operating the valve, make sure that a drain line has been
attached to the valve to direct the discharge to an open drain. Failure to
take this precaution could mean contact with extremely hot water passing out
the valve during this checking operation.
If the temperature and pressure relief valve on the water heater discharges
periodically or continuously, it may be due to thermal expansion of water in a
closed water supply system, or, it may be due to a faulty relief valve.
Thermal expansion is the normal response of water when it is heated. In a
closed system, thermal expansion will cause the system pressure to build until
the relief valve actuation pressure is equaled. Then, the relief valve will
open, allowing some water to escape, slightly lowering the pressure.
Contact your water supplier or local plumbing inspector on how to control this
situation.
WARNING
Above all, DO NOT plug the temperature and pressure relief valve. This is NOT
a solution and can create a hazardous situation.
Vent and Air Intake System
Examine the vent and air intake system every 3 months. Points of inspection
are as follows: 1. Check for obstructions and/or deterioration of vent piping
and vent terminal. Replace immediately where needed. 2. Vent pipe and vent
terminal screen should be cleaned of any foreign material. The screen is
located inside the vent terminal outlet and is accessible from the outside of
the vent terminal elbow. DO NOT reach inside the vent terminal when the water
heater is in operation. 3. Check all venting system connections for leakage
and reseal as required.
Combustion System Inspection
Inspect the operation of the combustion system monthly. Use the following
procedure to inspect the combustion system. 1. Turn OFF the main power switch
of the water heater. 2. Adjust the thermostat to the minimum setting. 3.
Remove the top of the combustion surround by unlatching it. 4. While observing
the ignition module, turn on the main power switch. 5. Adjust thermostat to
the maximum setting. 6. Watch the LED’s light as the controller goes through
the sequence of operations as previously described. 7. Upon ignition, observe
the main burner flame. 8. Readjust thermostat to previous setting. 9. Replace
combustion surround top and latch it securely in place.
WARNING
DO NOT run out of propane gas. Damage to the water heater may occur.
52
SECTION XI: DIAGNOSTIC AND TROUBLESHOOTING GUIDE
Accessing Diagnostic Mode on the Water Heater Display
(FOR SERVICE PERSONNEL ONLY)
The display has a Diagnostic Mode to access information in aiding servicing of
the water heater. This procedure is for service and installation personnel
only. To enter the Diagnostic Mode, follow the steps illustrated below:
WARNING
The following procedure is for service and installation personnel ONLY.
Resetting lockout conditions without correcting the malfunction can result in
a hazardous condition.
Step 1. Press and hold the lower right button under “Next” in the lower right
display for at least 3 seconds. You must be in user mode on the DHW temp
screen to access diagnostic mode. If in user mode on the view rate screen, you
cannot access diagnostic mode.
NOTICE
The screens will stay in the Diagnostic Mode for 12.5 minutes after the last
button press for viewing unless “Done” button is pressed to exit Diagnostic
Mode.
Step 2. In the first screen of diagnostic mode the display will show the flame
sense current in microamps when the burner is operating.
Step 3. Press the lower right “Next” button. The display will flash and show
the number of any alert codes. These are not currently used.
53
Step 4. Press lower right “Next” button. The display will flash and show the
number of any Lockout codes. If there are no lockouts, the display will show
00. If there are multiple lockout codes “Next” will scroll through them.
Step 5. Press “Next”, the display will show “DHW MAX”. This is the maximum
allowable temperature that the unit can get to before a lockout occurs.
Step 6. Press Next, display will show “DELTA T DHW”, this is the real time
temperature reading of the tank.
Step 7. Press “Done” to exit Diagnostic Mode and return to the DHW setpoint in
User Mode.
54
NOTICE
The ICON control system can produce soft and hard lockouts. Soft lockouts are
displayed if active and are not stored in Diagnostic Mode history. The control
will periodically attempt to resume normal operation when in soft lockout
conditions. If the system resumes normal operation a soft lockout will clear
instantly; hard lockouts will display if active and require manual reset. Up
to ten previous Hard lockouts are logged chronologically (newest first) in
Diagnostic Mode history.
Error Code
Definition of Code
No code blank
display
No power to the unit or switch is
off.
Low flame
9,22
sense
signal
49
Voltage too low or high
AC Inputs
53
phase
reversed
62
Fan speed not proved
Normally
closed vent
67
safety
circuit
opened
High Limit
80
(Overheat
Condition)
Cause of Problem and Actions Taken to Correct
· Check power supply to the water heater. · Make sure water heater is plugged
in and the breaker is on. · Check if there is 120 volts power supply to the
LINE connections on the control
board. · Verify 24 volts at display. · Check for loose wires, defective
transformer. · Check wire harness connections from display to the control
board. · Check microamp output of flame sense · Inspect flame sensor and wire
· Inspect burner for debris · Measure the incoming line voltage. · Voltage
should be 115-125 volts. · If the voltage is not within this range or there is
drastic fluctuation, then have the
incoming power supply checked. · If the line voltage is satisfactory, check
the output from the transformer to make
sure it is 22-26 volts. · Replace transformer or wiring if defective.
· Check the module and display connections. · Check the module power supply
and make sure that frequency, voltage and VA
capacity of the transformer meet specifications. · Check to make sure the
wiring connections on the control module from terminals
J4-10 and J8-2 are connected together.
· Check the pulse width modulation (PWM) wire harness connection from the
blower to the control module.
· Make sure the pin terminals make solid contact. · Measure the resistance of
each wire in the wire harness from the terminal ends. · Replace wire harness
if defective. · If value remains out of range, this hold will change to
lockout 123 (defined below) · Check wiring to the normally closed blocked vent
pressure switch and vent limit
switch. · Use a voltmeter to find out if either the pressure switch or the
high limit switch has
opened. · If so, determine the cause (blocked vent terminal, clogged
condensate drain, high
temperature in compartment). · If limit switches are closed, check wiring for
shorts. · Measure continuity. · If limit switches and wiring check O.K.,
replace control module. · Check the wiring from the water temperature sensor
to the control module. · Measure the resistance of each outside wire to the
center wire. Measure the tank
temperature and compare with the chart below. · If either outside wire has a
much different resistance reading, replace the sensor. · Make sure the sensor
is securely held inside the well with the clip. · If the problem persists and
the sensor and wiring check O.K., then replace the
control module.
55
Error Code
Definition of Code
Water
93
temperature
sensor fault
Flame
105
detected out of
sequence
109, 110
Ignition Failure Occurred.
122,123 137 172
Light-off Rate
Proving Failed
Normally closed vent
safety circuit opened Water temperature sensor resistance invalid
NOTE
Cause of Problem and Actions Taken to Correct
· Appears after alert 172, defined below. · Check the water temperature sensor
wire harness from the sensor to the control
module. · Make sure there are no loose connections to the control plug. ·
Check the resistance reading from each of the outside wires to the center
(common) wire. Measure the tank temperature and compare with the chart below.
· If the ohm readings are not fairly close, replace the sensor. · Replace the
control module if the problem persists and the sensor and wire
connections are not defective. · Check to see if flame is present inside the
combustion chamber before or after the
ignition cycle. · If so, check to make sure the gas valve is wired correctly.
· Check for voltage at the gas valve connection. · Replace the gas valve if
defective. · If no flame is visible outside of the ignition sequence/run
cycle, then make sure the
flame sensor is wired to the correct terminal. · Make sure the ignition cable
is not crossing the flame sensor wire or ignition ground
wires. · If problem persists and all other checks have been verified, replace
the control
module. · Burner failed to light or stay lit after 4 retries. · Hold condition
will reattempt ignition after 15 minute waiting period. A log will be
stored in service history. · Check gas valve wiring and gas valve operation
during the ignition cycle. · If burner lights but quickly goes out, check the
flame sensor wire or the flame
sensor. · If the flame sensor rod is badly corroded with deposits, clean with
sandpaper or
replace. · Check the inlet gas supply to make sure the pressure is sufficient
and does not
drop after the gas valve opens. · Make sure the combustion blower is operating
during the ignition and run cycle. · Check the venting system to make sure the
inlet and exhaust terminals and venting
system is not blocked. · If blower speed is not verified from the PWM (Pulse
Width Modulation) signal within
5 minutes, the previously described error code “62” changes from a hold
condition to this lockout code condition · Check the harness and pin terminals
for a good connection to the control module. · Replace the blower or control
module if the wire harness is good.
· Refer to code 67
· Hold 93 will be displayed if this value remains out of range · Measure the
resistance of the water temperature sensor and compare it with the
tank temperature using the chart below.
· If there is do display, check primary/secondary voltage · Before
troubleshooting always verify the following
o Gas inlet pressure o Static to dynamic gas pressure drop o No vent and
intake restrictions o All wire connections are tight o No grounded wires or
missing grounds o No water leaks
56
Service Error Codes and Troubleshooting Procedures
Procedure for Checking Thermostat Sensors
Set the thermostat above water temperature (see temperature adjustment
section) and observe system through one (1) complete cycle. Make sure system
operates as desired.
To check the sensor assembly, compare the resistance of the sensor wires
(either outside black to center wire with yellow marking) as measured by an
ohmmeter to the water temperature as measured by an accurate thermometer.
Thermistor resistance increases as the temperature decreases. The tables below
show the correct sensor resistance at various temperatures. Both thermistors
in the sensor assembly should have approximately the same readings. Replace
the sensor if the ohm reading in the chart does not approximate the reading
from the sensor at the temperature measured in the tank. Use a thermometer or
thermocouple to measure the temperature from the hot water outlet or
Temperature and Pressure Relief Valve.
In Degrees F
°F
0
1
2
3
4
5
6
7
8
9
40 26109 25400 24712 24045 23399 22771 22163 21573 21000 20445
50 19906 19383 18876 18383 17905 17440 16990 16553 16128 15715
60 15314 14925 14548 14180 13823 13477 13140 12812 12494 12185
70 11884 11592 11308 11032 10763 10502 10248 10000 9760 9526
80 9299 9078 8862 8653 8449 8250 8057 7869 7685 7507
90 7333 7165 7000 6839 6683 6531 6383 6238 6098 5961
100 5827 5697 5570 5446 5326 5208 5094 4982 4873 4767
110 4663 4562 4464 4368 4274 4183 4094 4006 3922 3839
120 3758 3679 3602 3527 3453 3382 3312 3244 3177 3112
130 3048 2986 2925 2866 2808 2752 3697 3643 2590 2538
140 2488 2439 2391 2344 2298 2253 2209 2166 2124 2083
150 2043 2004 1966 1928 1891 1856 1820 1786 1753 1720
160 1688 1656 1625 1595 1566 1567 1509 1481 1454 1427
170 1402 1376 1351 1327 1303 1280 1257 1235 1213 1191
180 1170 1150 1129 1110 1090 1071 1053 1035 1017 999
190 982 965 949 933 917 901 886 871 857 842
200 828 814 801 788 775 762 749 737 725 713
In Degrees C
°C
0
1
2
3
4
5
6
7
8
9
0 32648 31026 29495 28049 26682 25389 24166 23010 21915 20879
10 19898 18968 18088 17253 16461 15710 14998 14322 13680 13071
20 12492 11942 11419 10922 10450 10000 9572 9165 8778 8409
30 8057 7722 7403 7099 6808 8532 6268 6016 5775 5546
40 5327 5117 4917 4726 4543 4368 4201 4042 3889 3742
50 3602 3468 3340 3217 3099 2986 2878 2774 2675 2579
60 2488 2400 2316 2235 2157 2083 2011 1942 1876 1813
70 1752 1693 1637 1582 1530 1480 1432 1385 1340 1297
80 1256 1216 1177 1140 1105 1070 1037 1005 974 944
90 916 888 861 835 810 786 763 741 719 698
57
Customer must specify complete model number and serial number when ordering
service parts.
This product is covered under one or more of the following patents and or
patent pending applications: CA2,430,807 CA2,844,271 EP1369647 GB1369647
NL1369647 TWI276761 US7,559,293 US7,900,589 US7,007,748 CA2,476,685
US7,063,132 CA2,409,271 US6,684,821 US7,337,517 US7,665,211 US7,665,210
US7,699,026 CA2,504,824 US6,935,280 AU2007201423 CA2,583,609 EP1840484
GB1840484 NL0840484 US7,634,976 US7,270,087 US7/621,238 US7,334,419
US7,866,168 CA2,491,181 US7,063,133 CA2,677,549 US8,082,888 AU2007201424
CA2,583,108 EP1840481 GB1840481 NL1840481 CA2,659,534 US7,971,560 US7,992,526
US8,146,772 US8,707,558 CA2,548,958 MX243220 US6,422,178 TWI649522 US9,429,337
CA3,001,716 GB2558134 GB2013252.8 US10,866,010 US17/109,618 US10,503,183
US20/42096 CA2,949,830 DE112015002523.5 GB2540513 US9,574,792 US15/436,425
CA3,059,965 EP18784108.5 MX/a/2019/012268 US15/486,816 US17/038,087
US7,007,316 US7,243,381 CA2,784,312 US8,787,742 DE112014002713.8 GB2533862
US9,964,241 US6,644,393 US8,851,022 USD636,857 US8,931,438 CA2,899,271
US10,495,343 CA2,918,211 US10,094,619 US15/621,063 US16/474,833 US16/281,599
Model No.:
Serial No.:
Service Phone Days: _____ Nights: ____ Address:
Supplier:
Supplier Phone No.:
Refer to the parts list on www.bradfordwhite.com for a complete parts listing
and expanded views of the models covered in this manual.
58
NOTES
59
United States
General Contact Technical Support
Email Warranty
Email Service Parts
Email
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Email Warranty
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