Westinghouse WEC080C2X055 Commercial Electric Light Duty Water Heater User Manual

Westinghouse WEC080C2X055 Commercial Electric Light Duty Water Heater

WARNING : This manual must only be used by a qualified installer/service technician. Read all instructions in this manual before installing. Perform steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Notice : The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature. The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required by the Safe Drinking Water Act, Section 1417.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.

Foreword

This manual is intended to be used in conjunction with other literature provided with the water heater. This includes all related control information. It is important that this manual, all other documents included in this system, and additional publications be reviewed in their entirety before beginning any work. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code authorities, and utility companies which pertain to this type of water heating equipment. Authority Having Jurisdiction (AHJ) – The AHJ may be a federal, state, local government, or individual such as a fire chief, fire marshal, chief of a fire prevention bureau, labor department or health department, building official or electrical inspector, or others having statutory authority. In some circumstances, the property owner or his/her agent assumes the role, and at government installations, the commanding officer or departmental official may be the AHJ.
NOTE : Westinghouse reserves the right to modify product technical specifications and components without prior notice.

For the Installer

This water heater must be installed by qualified and licensed personnel. The installer should be guided by the instructions furnished with the water heater, and by local codes and utility company requirements.

Installations Must Comply With:
Local, state, provincial, and national codes, laws, regulations, and ordinances. The latest version of the National Electrical Code, NFPA No. 70.

For Your Records
Write the Product Model and Serial Numbers:
Model # ___
Serial # ____
These numbers are listed on the product ratings label.
Keep this manual and information for future reference.

IMPORTANT SAFETY INSTRUCTIONS

When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to persons should be followed, including:

1. READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.
2. This water heater must be grounded. Connect only to a properly grounded circuit. See Part 4 – Heater Wiring, this manual, for grounding details.
3. Install or locate this water heater only in accordance with the provided installation instructions.
4. Use this water heater only for its intended use as described in this manual.
5. This water heater IS NOT for use by children.
6. Do not operate this water heater if it has damaged wiring, if it is not working properly, or if it has been damaged or dropped.
7. This water heater should be serviced only by qualified service personnel. Contact the water heater installer or a qualified service agency for examination, repair, or adjustment.
   SAVE THESE INSTRUCTIONS.

From the Uniform Plumbing Code 2000 – Section 510 – Protection From Damage

1. Water heaters generating a glow, spark or flame capable of igniting flammable vapors may be installed in a garage, provided the pilots, burners or heating elements and switches are at least eighteen (18) inches (457 mm) above the floor level.
2. Where such water heaters installed within a garage are enclosed in a separate, approved compartment having access only from outside of the garage, such water heaters may be installed at floor level provided the required combustion air is also taken from the exterior of the garage. Fuel burning water heaters having sealed combustion chambers need not be elevated.
3. All water heaters installed in areas where they may be subjected to mechanical damage shall be suitably guarded against such damage by being installed behind adequate barriers or by being elevated or located out of the normal path of a vehicle using any such garage.
4. In seismic zones 3 and 4, 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 (1/3) and lower one-third (1/3) of its vertical dimensions. At the lower point, a minimum distance of four (4) inches (102 mm) shall be maintained above the controls with the strapping.
5. An water heater supported from the ground shall rest on level concrete or other approved base extending not less than three (3) inches (76 mm) above the adjoining ground level.
6. When an water heater is located in an attic, attic-ceiling assembly, floor-ceiling assembly, or floor-subfloor assembly where damage may result from a leaking water heater, a watertight pan of corrosion resistant materials shall be installed beneath the water heater with a minimum three-quarter (3/4) inch (20 mm) diameter drain to an approved location.
   NOTE : Obey all local codes. Obtain all applicable permits before installing the water heater.
   NOTE : Install all system components and piping in such a manner that does not reduce the performance of any fire rated assembly

Part 1 – General Safety Information

This water heater is approved for indoor installations only and is not intended for use as a pool heater. Clearance to combustible materials: 0” top, bottom, sides, and back. Heater must have room for service: 24” front, 3” back, 6” top, and 6” sides are minimum recommended service clearances. (A combustible door or removable panel is acceptable front clearance.) This water heater has been approved for closet installation and installation on combustible flooring. Do not install directly on carpeting. Install the water heater in a location where temperature and pressure relief valve discharge or a leak will not result in damage to the surrounding area.

Installer – Read all instructions in this manual before installing. Perform steps in the given order.
User – This manual is for use only by a qualified heating installer/service technician. Have this water heater serviced/inspected annually by a qualified service technician.

FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.

DO NOT USE THIS WATER HEATER IF ANY PART HAS BEEN SUBMERGED IN WATER.

Immediately call a qualified service technician. The water heater MUST BE replaced if it has been submerged. Attempting to operate a water heater that has been submerged could create numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release of mold, bacteria, or other harmful particulates into the air. Operating a previously submerged water heater could result in property damage, severe personal injury, or death.
NOTE : Water heater damage due to flood or submersion is considered an Act of God, and IS NOT covered under product warranty.
NOTE : If the water heater is exposed to the following, do not operate.

Immediately call a qualified service technician.

1. Fire
2. Damage
3. Water
   Failure to follow this information could result in property damage, severe personal injury, or death.

Caution : Do not use this water heater for anything other than its intended purpose (as described in this manual). Doing so could result in property damage and WILL VOID product warranty. High heat sources (sources generating heat 100oF / 37oC or greater, such as stove pipes, space heaters, etc.) may damage plastic components of the water heater as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty. It is recommended to keep a minimum clearance of 8” from high heat sources. Observe heat source manufacturer instructions, as well as local, state, provincial, and national codes, laws, regulations and ordinances when installing this water heater and related components near high heat sources.

A. When Servicing the Water Heating System

WARNING : Be sure to disconnect electrical power before performing service. Failure to do so could result in electrical shock, property damage, serious personal injury, or death.

To avoid electric shock, disconnect electrical supply before performing maintenance.
NOTE : When inquiring about service or troubleshooting, reference the model and serial numbers from the water heater rating label. To avoid severe burns, allow water heater and associated equipment to cool before servicing.

B. Heater Water
Do not use petroleum-based cleaning or sealing compounds in a water heating system. Gaskets and seals in the system may be damaged. This can result in substantial property damage. Do not use “homemade cures” or “patent medicines”. Damage to the water heater, substantial property damage, and/or serious personal injury may result.

C. Freeze Protection
NOTE : Consider piping and installation when determining heater location.

Caution : Failure of the water heater due to freeze related damage IS NOT covered by product warranty.
Warning : NEVER use any toxic chemical, including automotive, standard glycol antifreeze, or ethylene glycol made for hydronic (non-potable) systems. These chemicals can attack gaskets and seals in water systems, are poisonous if consumed, and can cause personal injury or death.

UNCRATING THE WATER HEATER – Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

D. Water Temperature Adjustment
If the water heater is going to have a set temperature above 120oF, it is recommended to use an ASSE 1017 rated mixing valve to avoid severe burns or death from scalding temperatures.

Warning : Households with small children, disabled, or elderly persons may require a 120oF or lower temperature setting to prevent severe personal injury or death due to scalding.

Approximate Time / Temperature Relationships in Scalds

120oF| More than 5 minutes
125oF| 1 1/2 to 2 minutes
130oF| About 30 seconds
135oF| About 10 seconds
140oF| Less than 5 seconds
145oF| Less than 3 seconds
150oF| About 1 1/2 seconds
155oF| About 1 second

Part 2 – Prepare the Water Heater

Remove all sides of the shipping crate to allow the heater to be moved into its installation location.

COLD WEATHER HANDLING – If the water heater has been stored in a very cold location (BELOW 0oF) before installation, handle with care until the components come to room temperature. Failure to do so could result in damage to the water heater.

A. What’s in the Box
Components included with the water heater:

• Drain Valve
• Temperature and Pressure Relief Valve
• Insulation
• Hot Water Outlet
• Dip Tube
• Use and Care Manual and Warranty
• Conversion Labels (2) and Envelope

NOTE : Some components may ship factory installed. This depends on water heater model.

B. Locating the Water Heater

Warning : This water heater is certified for indoor use only. DO NOT INSTALL OUTDOORS. Outdoor installations ARE NOT covered by warranty. Failure to install the water heater indoors could result in property damage, severe personal injury, or death.

1. Installation Area (Mechanical Room) Operating Conditions

   • Ensure ambient temperatures are higher than 32oF / 0oC and lower than 104oF / 40oC

   • Avoid continuously high levels of humidity

   • Never close existing ventilation openings
     NOTE : When installing in a zero clearance location, it may not be possible to read or view some product labeling. It is recommended to make note of the water heater model and serial number.
     NOTE : A combustible door or removable panel is acceptable front clearance.
     Caution : All water heaters eventually leak. Locate the water heater where any leakage from the relief valve, related piping, tank, or connections will not result in damage to surrounding areas or lower floors of the building. Any water heater should be installed in such a manner that if it should leak the resulting flow of water will not cause damage to the area in which it is installed. National Plumbing codes require a drain pan for any water heater installation. This drain pan should be sized with a maximum depth of 2”, and a minimum diameter 2” greater than the diameter of the water heater. The drain pan should empty into an open drain line. This drain line should be 3/4” ID minimum, piped to an open drain. Leakage damages ARE NOT covered by warranty. Failure to install a drain pan is the sole responsibility of the owner and/or installer. Reference UPC 2000 (Uniform Plumbing Code) Section
     510 – Protection from Damage or IPC 200 (International Plumbing code) Section 504 – Safety Devices. Leakage damages ARE NOT covered by warranty.

   • In addition, water leak detection devices and automatic water shutoff valves are readily available at plumbing supply houses. IT IS HIGHLY RECOMMENDED BY THE MANUFACTURER TO INSTALL WATER LEAK DETECTION DEVICES AND AUTOMATIC SHUTOFF VALVES IN ANY WATER HEATER INSTALLATION WHERE A LEAKAGE OF WATER COULD RESULT IN PROPERTY DAMAGES.

   • The service life of the water heater’s exposed metallic surfaces, such as the junction box, is directly influenced by proximity to damp and salty marine environments. In such areas higher concentration levels of chlorides from sea spray coupled with relative humidity can lead to degradation of water heater components. Failure of the water heater or components due to incorrect operating conditions IS NOT covered by product warranty.
     Warning : Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk. Ensure that the installation location adheres to the information included in this manual. Failure to do so could result in property damage, serious personal injury, or death.

2. Choose a location for the water heater as centralized to the piping and electrical system as possible. Also, locate the water heater and domestic water piping where it will not be exposed to freezing temperatures. All piping should be insulated. Additionally, place the water heater so that the drain, controls, and inlets/outlets are easily accessible.
   NOTE : To save on heating costs and improve energy efficiency keep the distance between the water heater and fixtures to a minimum to reduce heat loss from excess piping and keep friction loss at a minimum. Ensure all water heater piping is properly insulated to minimize heat loss.
   NOTE : If you do not provide the minimum clearances shown in Figure 1, it might not be possible to service the water heater without removing it from the space.
   NOTE : In the State of California, the water heater must be braced, anchored, or strapped to avoid moving during an earthquake. Contact local utilities for code requirements in your area. Visit http://www.dsa.dgs.ca.gov or call 1-916-445-8100 and request instructions.
   However, applicable local codes shall govern installation. For residential water heaters of a capacity of greater than 52 gallons, consult the local building jurisdiction for acceptable bracing procedures.

3. Check area around water heater. Remove any combustible materials, gasoline, and other flammable liquids.
   Warning : This water heater must be installed upright in the vertical position as described in this manual. DO NOT attempt to install this water heater in any other orientation. Doing so will result in improper water heater operation and property damage, and could result in serious personal injury or death.
   Danger : This water heater must not be located near flammable liquids such as gasoline, butane, liquefied propane, adhesives, solvents, paint thinners, etc., as the controls of this water heater could ignite these vapors and cause an explosion resulting in property damage, severe personal injury, or death.

4. If the water heater is to replace an existing water heater, check for and correct any existing system problems such as:

   • System leaks
   • Location that could cause the system and water heater to freeze and leak
   • Incorrectly-sized expansion tank

5. This water heater must be installed vertical on a level surface.

C. Water Chemistry Requirements

Caution : Chemical imbalance of the water supply may affect efficiency and cause severe damage to the appliance and associated equipment. Water quality must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water quality. Adverse water quality will affect the reliability of the system. In addition, operating temperatures above 135oF will accelerate the build-up of lime scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or other chemical imbalance IS NOT covered by the warranty.

The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminates. It is up to the installer to ensure the water does not contain corrosive chemicals or elements that can damage the heat exchanger. Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the water contains contaminants higher than outlined by the EPA, water treatment is recommended and additional, more frequent maintenance may be required.

If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional.

• Water pH between 6.5 and 8.5
  • pH levels below 6.5 can cause an increase in the rate of corrosion. pH of 8.5 or higher can potentially cause lime scale build-up
  • Maintain water pH between 6.5 and 8.5. Check with litmus paper or have it chemically analyzed by a local water treatment company.
  • If the pH is not between 6.5 and 8.5, consult a local water treatment company for solutions.
• Hardness less than 7 grains (120 mg/L) (Commercial Use – water temperatures of 140oF and greater)
  • Hardness levels above the required amounts can lead to lime scale build-up throughout the system. Water below 5 grains/ gallon (85 mg/L) may be over softened.
  • Consult local water treatment companies for unusually hard water areas (above the required amounts) or for other treatment solutions if water is being over softened (below 5 grains/gallon [85 mg/L]).
• Chloride concentration less than 100 ppm (mg/L)
  • Do not fill appliance or operate with water containing chlorides in excess of 100 ppm (mg/L).
  • Using chlorinated fresh water should be acceptable as levels are typically less than 5 ppm (mg/L).
  • Do not connect the appliance to directly heat swimming pool or spa water.
• Total Dissolved Solids (TDS) less than 500 ppm (mg/L)
  • Total dissolved solids are minerals, salts, metals, and charged particles that are dissolved in water.
  • The greater the amounts of TDS present, the higher the corrosion potential due to increased conductivity in the water.
  • If using softened water to fill the appliance, it is still possible to have high TDS. This water can be corrosive. Consult local water treatment companies for other treatment solutions to reduce this affect.
    NOTE : To promote appliance service life, it is strongly recommended to follow the maintenance procedures in this manual.

Caution : Failure of electric elements due to lime scale build-up on the heating surface, low pH, or other imbalance IS NOT covered by the warranty.

Figure 2 – Dimensional Drawing

Models

| Storage Capacity| ****

A

| ****

B

| ****

C

| ****

D

| ****

E

| ****

F

| Hot / Cold Inlets| Shipping Weight (Lbs. Est.)| Min. Delivered Temp.| Max. Delivered Temp.| High Temp. Limit
080| 80| 6 1/2”| 60”| 69”| 23 1/4”| ****

8”

| 26”| ****

3/4” NPT

| 165| ****

135 o F

(57.2 C)

| ****

181 o F

(82.8 C)

| ****

200 o F

(93.3 C)

100| 100| ****

7 1/4”

| 52”| 61”| ****

27”

| ****

30”

| 220
115| 115| 60”| 69”| 240
Gallons| # Elements and Thermostats| Simultaneous| 208| 240| 277| 480
---|---|---|---|---|---|---

80, 100,

115

| ****

3

| 12,500| ****

YES

| NO| ****

NO

| NO
13,500| YES| YES
14,000| ****

NO

| NO| ****

YES

| NO
15,000| YES| YES
16,000| NO| NO
16,500| YES| NO| YES
18,000| NO| YES| YES

Table 3 – Element Kits and Corresponding Wattages / Voltages – For Element Kit Part #’s, See Replacement Parts, This Manual

Electrical Specifications

Total Input (Kw)

| ****

# of Elements

| ****

Single Element Wattage

| Full Load Current In Amperes| ****

# of T-Stats

| ****

# of Fuses

| ****

# of Fuse Holders

208V| 240V| 277V| 480V
Phase| Phase| Phase| Phase
1| 3| 1| 3| 1| 3| 1| 3
**4.1*| **

3

| 4.1| 20| 20| –| –| –| –| –| –| ****

3

| ****

6

| ****

2

4.5| 4.5| 22| 22| 19| 19| 17| 17| 10| 10
5| 5| –| –| 21| 21| 18| 18| 11| 11
5.5| 5.5| –| –| 23| 23| 19| 19| 12| 12
6| 6| –| –| –| –| 22| 22| 13| 13
12.5| 4.2| 60| 35| –| –| –| –| –| –
13.5| 4.5| 65| 38| 57| 33| –| –| 29| 17
14| 4.7| –| –| –| –| 51| 30| –| –
15| 5| –| –| 63| 36| 55| 32| 32| 18
16| 5.3| –| –| –| –| 58| 34| –| –
16.5| 5.5| –| –| 69| 40| –| –| 35| 20
18| 6| –| –| –| –| 65| 38| 38| 22

Table 4 – * Unit must be converted for Non-Simultaneous operation.

Part 3 – Piping

A. Plumbing
It is mandatory that all plumbing be done in accordance with federal, local, and state plumbing codes and practices. Failure to properly install the water heater WILL VOID the warranty. It is also necessary to use both thread tape and pipe dope on all mechanical plumbing connections. Install unions on the hot and cold water connections to easily disconnect the water heater for servicing.

Caution : Dielectric unions or galvanized steel fittings must not be used in a system with this water heater. Doing so WILL VOID the warranty. It is recommended to use only copper, brass, or stainless steel fittings. Teflon thread sealant must be used on all connections. Do not disturb the factory seal on the water heater connections! Use two wrenches when tightening or loosening the piping, valve, or adapters at the water heater. One to secure the water heater fitting, the other to tighten or loosen connections to the water heater. DO NOT over-tighten!

Do not apply heat to the Hot or Cold water heater connections. If sweat connections are used, sweat tubing to the adapter before fitting adapter to the water connections on the heater. Any heat applied to the water heater connections will permanently damage the dip tube and/or heat traps. Damages due to improper installation practices ARE NOT covered by warranty.

1. Install a shut-off valve on the inlet connection on the top of the heater. Connect the cold water supply line to the shut-off valve. Refer to piping Applications, this manual.
2. Connect the hot water line to the connection marked “HOT” on the top of the water heater.
   Caution : Failure of electric elements due to lime scale build-up on the heating surface, low pH, or other imbalance IS NOT covered by the warranty.

B. Thermal Expansion

A check valve may be installed in the cold water inlet line as a separate backflow preventer, or may be part of a pressure reducing valve, water meter, or water softener. An “open water system” refers to a system without a check valve. A “closed water system” refers to a system with a check valve installed in the cold water inlet line.

As water is heated, it expands in volume and increases pressure within the water system. This action is referred to as “thermal expansion”. In an open water system, expanding water which exceeds the capacity of the system flows back into the city main where pressure is easily dissipated.

A closed water system prevents expanding water from flowing back to the city main. The resulting thermal expansion can rapidly increase pressure in the water heater and system piping. This rapid pressure increase can exceed the setting of the pressure relief valve, causing it to operate during each heating cycle, resulting in discharge from the T&P. This rapid and repeated expansion and contraction of components in the system can cause premature failure of system components, including the relief valve and possibly the water heater. Replacing the relief valve will not correct thermal expansion. A potable hot water expansion tank is required to offset thermal expansion. Expansion tanks are designed with an air cushion built in
that compresses as system pressure increases, thereby relieving the overpressure condition and eliminating repeated operation of the relief valve. This expansion tank should be installed in the cold water line between the water heater and check valve, and must be sized for the entire water volume of the hot water system. See piping Applications. Other methods of controlling thermal expansion are available. Check with the local water utility to determine if a check valve exists in the cold water inlet line. Contact your installing contractor, water supplier, or plumbing inspector for additional information regarding thermal expansion.

C. Condensation

Condensation can form on the water heater when it is first filled with water, and may also occur with a heavy water draw and very cold inlet water temperature. This condition is not unusual and will disappear as the water becomes heated. However, if the condensation should continue, examine the piping and fittings for possible leaks.

D. Insulation Blankets

Insulation blankets for external use on electric water heaters are not necessary with this water heater. An insulation blanket is meant to reduce the standby heat loss encountered with storage tank heaters. This water heater meets or exceeds National Appliance Energy Conservation Act standards with respect to insulation and energy factor requirements, thus making an insulation blanket unnecessary.

The manufacturer’s warranty does not cover any damages or defects caused by the installation, attachment, or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto, or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and endanger life and property. The manufacturer disclaims any responsibility for any losses or injuries resulting from the use of such unauthorized devices.

E. Temperature and Pressure Relief Valve

For protection against excessive pressures and temperatures in this water heater, install temperature and pressure protective equipment as required by local codes, but not less than a combination T&P valve meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22B / CSA 4.4- M99 by a nationally recognized testing laboratory that maintains periodic inspection of production listed equipment and materials. This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater. Install the T&P valve into the opening provided and marked for this purpose on the water heater. The T&P valve must be plumbed down so discharge can exit at least 6” above the structural floor. The relief line cannot be in contact with any live electrical parts.

Warning : Do not thread a cap or plug into the relief valve or relief valve line under any circumstances! Explosion and property damage, serious injury, or death may result.

To avoid water damage or scalding due to relief valve operation:

• Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the relief valve discharge.
• Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.
• Discharge line must pitch downward from the valve and terminate at least 6” above the floor drain, making discharge clearly visible.
• The discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375oF or greater.
• Do not pipe discharge to any location where freezing could occur.
• No valve may be installed between the relief valve and heater or in the discharge line. Do not plug or place any obstruction in the discharge line.
• Test the operation of the relief valve after filling and pressurizing the system by lifting the lever. Make sure the valve discharges freely. If the valve fails to operate correctly, immediately replace with a new properly rated relief valve.
• Test T&P valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the heater “off” and call a plumber immediately.
• Take care whenever operating relief valve to avoid scalding injury or property damage.
  FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION, RESULTING IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.

RE-INSPECTION OF T &P RELIEF VALVES:

T&P valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and replaced if necessary, by a licensed plumbing contractor or qualified service technician to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occuring conditions may corrode the valve and its components over time, rendering the valve inoperative. Such conditions can only be detected if the valve and its components are physically removed and inspected. Do not attempt to conduct an inspection on your own. Contact your plumbing contractor for a re-inspection to assure continued safety.

FAILURE TO RE-INSPECT THE T&P VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE AND/OR PRESSURE BUILDUP WHICH CAN RESULT IN PROPERTY DAMAGE, SERIOUS PERSONAL INJURY, OR DEATH.

F. Scalding

Approximate Time / Temperature Relationships in Scalds

120oF| More than 5 minutes
125oF| 1 1/2 to 2 minutes
130oF| About 30 seconds
135oF| About 10 seconds
140oF| Less than 5 seconds
145oF| Less than 3 seconds
150oF| About 1 1/2 seconds
155oF| About 1 second

An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve is recommended in installations servicing disabled or elderly persons, or children. Mixing valves do not eliminate the risk of scalding.

To avoid scalding:

• Set the water heater set point temperature as low as possible.
• Feel water before bathing or showering.
• If thermostatic valves are required, use devices specifically designed for such purpose. Install these devices in accordance with instructions provided by the manufacturer. Failure to install a temperature limiting or mixing valve and follow these instructions could result in property damage, severe personal injury, or death due to scalds.

This water heater can deliver scalding water. Be careful whenever using hot water to avoid scalding injury. Certain appliances such as dishwashers and automatic clothes washers may require increased water temperatures. By setting the thermostat on this heater to obtain the increased water temperature required by these appliances you may create the potential for scald injury.

To protect against injury, install a mixing valve in the water system. This valve will reduce point of use discharge temperatures by mixing cold and hot water in branch supply lines. Such valves are available from your local plumbing supplier. Table 5 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.

G. Filling the Heater

• Make certain that the field installed drain valve is completely closed.
• Open the shut-off valve in the cold water supply line.
• Open the hot water faucets to allow air to vent from the heater and piping.
• Allow sufficient time for the heater to completely fill with water.
• Verify elements are installed correctly. Check for leaks at the water heater and throughout the system.

H. Applications

Figure 3 – Piping Detail –
NOTE : Drawing is meant to demonstrate system piping concept. Heat traps are optional.

H. Applications

PIPING NOTES:
The following notes are applicable to all of the piping applications demonstrated on this page.

1. Minimum pipe size should match connection size. Upsize pipe accordingly if greater flow is required.
2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold water inlet.
3. All circulators should have an integral flow check.
4. Drains and check valve between unit and storage tank will assist in purging air from system.
5. These drawings are meant to demonstrate system piping only. The installer is responsible for all equipment and detailing required by local codes. In Massachusetts, you must install a vacuum relief valve per 248 CMR.
6. Mixing valve application is optional, but recommended to help prevent scalding. See Part 3 for more information.

Part 4 – Wiring

This unit is equipped with a terminal block for easy connection to field wiring and conversion. These heaters are equipped and wiredfor the maximum possible input allowable (see Table 4 for listing of inputs and amperage requirements). The voltage requirement and dedicated wattage load for the heater is specified on the rating label of the water heater. Consult your local power company to determine if your electrical service is adequate for the additional load of the heater.

Refer to the wiring diagrams for field connections. All wiring must conform to local code and the National Electric Code, and should be done by a qualified licensed electrician or the local electric utility. Grounding can be accomplished by using approved conduit and fittings or other approved conductive material. A grounding wire is provided on the junction bracket. This grounding wire must be used in the installation.

Warning : Be sure to ground the water heater. The preferred way to ground is with rigid metal conduit between the main panel and the water heater junction box with approved end fittings (check codes on the use of flexible conduit). If making a separate ground, a green ground wire is provided in the water heater junction box. Replace the junction box cover and insulation after you have made the wiring connections. Failure to follow these instructions could result in property damage, severe personal injury, or death.

Alternate Wiring / Operation Configurations

The water heater ships ready for Single Phase, Simultaneous operation. Figure 7 details this configuration. This factory installed wiring and operation configuration may be converted to meet custom installation conditions. Figures 8 – 10 detail these optional configurations. These optional configurations include: 3 Phase
Simultaneous, 3 Phase Non-Simultaneous, and Single Phase Non-Simultaneous. Conversions MUST BE PERFORMED by a Qualified Service Technician.

STEP #1 – Wiring the Water Heater

a. To convert the water heater from Single Phase to 3 Phase:

1. Remove the red and grey wires from terminals L1 and L2 respectively. See Figure 4.
2. Place the red and grey wires in terminal L3.
3. Tighten screws to securely hold wires. Be sure not to place wire insulation under screws.

b. To convert from Simultaneous to Non-Simultaneous element operation:

1. Remove the purple wire from the bottom side of the fuse holder and place it in the terminal block slot with the adjoining purple wire.
2. Remove the orange wire from the bottom side of the fuse holder and place it in the terminal block slot with the adjoining orange wire.
3. Remove the gray wire from the bottom side of the fuse holder and place in the terminal block slot with the adjoining gray wire.
4. Remove the brown wire from the bottom side of the fuse holder and place in the terminal block slot with the adjoining brown wire.
5. Tighten screws to securely hold wires. Be sure not to place wire insulation under screws. See Figure 5. See Figures 8 – 10 for optional configuration wiring details.

Pay careful attention when making any conversions. Not properly following conversion instructions could cause a short circuit, and lead to property damage, personal injury, or death. Failures and service calls due to shorted circuits ARE NOT covered by warranty.

STEP #2 – After converting the water heater, place the labels provided in the proper locations.
a. The Qualified Service Technician should fill in the white label with all conversion information in permanent ink. Place the completed label in an area close to the electric water heater rating label. See Figure 6.

If the water heater has been changed from its factory installed configuration, it is required to place the included conversion labels as detailed below and to notify the factory of the conversion with the included envelope. Failure to properly document the conversion could result in property damage, severe personal injury, or death.

b. Place the clear warning label that states, “THIS WATER HEATER HAS BEEN CONVERTED” over the electric water heater rating label on the water heater. Ensure the original model and serial numbers remain exposed. See Figure 6.

STEP #3 – The Qualified Service Technician is to fill out the conversion verification envelope with all conversion information. It is VERY important that the conversion verification envelope be completely filled out and sent back to the factory to register the water heater as converted and continue warranty coverage. NOTE: FAILURE TO DO SO WILL VOID WARRANTY!

NOTE : It is recommended to keep a copy of the filled in conversion verification form for your records.

Part 5 – Installation Checklist

Part 5 – Installation Checklist

Water Heater Location| Yes| No
Close to area of heated water demand|  |
Indoors      and     protected      from     freezing temperatures|  |
Area free of flammable vapors|  |
Provisions made to protect area from water damage|  |
Sufficient room to service heater|  |
Relief Valve| Yes| No
Temperature and Pressure Relief Valve properly installed and discharge line run to open drain|  |
Discharge line protected from freezing|  |
Wiring| Yes| No
Power supply voltage agrees with water heater rating plate|  |
Branch circuit wire and fusing or circuit breaker of proper size|  |
Electrical connections tight and unit properly grounded|  |
Water Supply| Yes| No
Water heater completely filled with water BEFORE operating the unit|  |
Air purged from water heater and piping|  |
Water connections tight and free of leaks|  |

Part 6 – Operation

Tank must be full of water before the power is turned on. Heating elements will be damaged if energized for even a short time while tank is dry. Failures due to “dry-firing” ARE NOT covered by warranty. After water and electrical connections have been made and tank is filled with water, turn on power to the heater. The heater is now in operation.

A. Combination Thermostat and High Limit Control (ECO)

After water and electrical connections have been made and tank is filled with water, turn on power to the heater. The heater is now in operation. Each water heater thermostat is a combination Thermostat – High Limit Control (ECO). Thermostats are located above the heating elements. If for any reason the water temperature becomes excessively high, the ECO breaks the circuit to the heating element. Once the switch opens it must be reset manually. However, THE CAUSE OF THE OVER TEMPERATURE CONDITION MUST BE CORRECTED FIRST.

The cause of the high temperature condition must be investigated by a qualified service technician and corrective action must be taken BEFORE placing the water heater back in service. Failure to do so could result in property damage, severe personal injury, or death.

B. Thermostat Adjustment and ECO Reset

There are three thermostats on these water heaters. If temperature adjustment is necessary, TURN OFF POWER TO HEATER, remove black access cover and insulation. The thermostat protective cover SHOULD NOT be removed. Set temperature indicator to desired temperature. Replace insulation and the black access cover. Turn on power to the heater.

Danger : Failure to disconnect the power from the water heater before attempting to adjust or reset the thermostat(s) will result in property damage, severe personal injury, or death.

IF YOU NEED TO ADJUST THERMOSTAT(S) OR RESET THE ECO (RED RESET BUTTON)

STEP #1 – Turn off power to the water heater by removing fuse or shutting off at circuit breaker.
STEP #2 – Remove the two screws that hold the access cover in place. Remove the cover.
STEP #3 – Remove the insulation to expose the thermostat.
STEP #4 – See Figure 11

1. Reset the ECO by pushing in the red button marked “RESET”.
2. Adjust the water temperature by turning the white adjustment knob. Turning the knob to the right (clockwise) makes the water hotter. Turning the knob to the left (counterclockwise) makes the water cooler.

Step #5 – Replace the insulation.
Step #6 – Reattach the access cover with the two screws.
Step #7 – Restore power by replacing the fuse or turning on the circuit breaker.
Step #8 –

1. After resetting the ECO, ensure the water heater is operating properly before leaving the installation.
2. After adjusting the water temperature, allow the water heater enough time to heat the water to temperature. After the water heater has stopped heating, measure the water temperature at a hot water outlet in the structure.

Step #9 – If the water heater is operating properly and the water temperature is satisfactory, adjustment is complete.

Warning : Risk of scald injury increases as you increase water temperature. Failure to replace insulation or access cover could result in property damage, severe personal injury, or death.

C. Heating Element Replacement Procedure

Warning : If heating elements need replacement, it is very important to use the same voltage, wattage, and construction. DO NOT replace heating element with a generic heating element. Only Westinghouse heating elements are approved for use with this water heater. Failure to follow this warning will result in premature product failure and VOID the warranty, and could result in severe personal injury or death.

Step #1 – Turn off power to the water heater. Use a Phillips Head screwdriver to remove the wires from the element.
Step #2 – Run hot water at a faucet in the system. When it runs cold, shut off the faucet. Then shut off water at the main cold water inlet or, if possible, valve off the water heater from the system. Drain the water from the system, or just the water heater if it can be isolated from the system.
Step #3 – Remove the element with a 1 1/2” socket wrench or element tool.
Step #4 – Inspect the removed element. Determine whether the replacement element will need a square or circular gasket and washer.

Step #5 – Ensure thread and opening are completely free of debris. Use a nylon brush to clear away any debris.
Step #6 – Put a small amount of NSF approved lubricant and sealant on the appropriate gasket and/or washer for the installation. Put the gasket and/or washer on the element.
Step #7 – Screw the element clockwise into the tank, and tighten with the 1 1/2” socket wrench or element tool. Be sure O-ring seats properly.
NOTE : Repeat Steps 3 – 6 as Necessary for Multiple Elements
Step #8 – Open the main cold water inlet. If the water heater has been isolated from the system, open the valves. Refill the tank with cold water. Open a hot water faucet high in the system to bleed any air pressure from the system. Water will flow freely when air is completely bled.
Step #9 – Pressure check the tank for leaks around element. If no leaks are found, use a Phillips Head screwdriver to connect the wires to the element.
Step #10 – Turn power back on to the water heater.

Part 7 – Maintenance

Considerations

• To avoid electric shock, disconnect electrical supply before performing maintenance.
• To avoid severe burns, allow heater to cool before performing maintenance.
  NOTE : In addition to the routine maintenance detailed in this manual, this water heater should be inspected annually by a qualified service technician to assure that all the equipment is operating safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of the heater. Installer must also inform the owner that lack of proper care and maintenance may result in a hazardous condition, premature heater failure, and void the warranty. Routine preventative maintenance ensure the water heater operates safely and efficiently over its service life. The Owner / User may perform the maintenance activities described below. Monthly (Every two weeks in hard water locations) It is recommended that a few quarts of water be drained from the heater. This will flush sediment deposits from the bottom of the heater and lengthen the heater’s service life. Turn off power to the heater during flushing operation, so the elements will not be damaged.

To flush the tank, attach a hose to the field installed drain valve. Close the cold water supply line shut-off valve. Open the drain valve and hot water faucet(s) to vent heater while draining. Direct the flow of water to a drain or bucket where it will not cause damage. Flush until water runs clear to complete this operation. Close drain valve and reopen the supply line shut-off valve. Close the hot water faucet(s) once all air has been bled from the system (when water runs freely). Make certain that the heater is completely full of water before restoring power.

Periodically (At least twice a year)
Check around the water heater and related plumbing for leaks. If the combination temperature and pressure relief valve discharges periodically, or water is leaking from around the heating elements, there may be a problem with your water system. DO NOT ATTEMPT TO REPAIR LEAKS YOURSELF! Contact a qualified service contractor for assistance.

Check the area around the water heater for flammable liquids or combustible materials. If any are found, remove from the area.

Vacation (Extended shut-off periods)

During extended mild or warm weather periods when hot water will not be in use, shut off the electric power to the tank. When hot water is needed again, restore power to the water heater. During extended cold weather periods when hot water will not be in use and prone to freezing conditions, shut off electric power to the tank, close the supply line shut-off valve, open the drain valve and drain the water heater to a safe drainage location (as detailed previously). Once drained, close the drain valve. When hot water is needed again, restore the water supply to the tank. Once the tank is full, restore power.

The maintenance activities described below are only to be performed by the Installer / Qualified Service Provider. These maintenance items should be performed during recommended annual service and any service calls.

1. Ask the owner / user if there have been any issues with the water heater. Diagnose any heater issues and repair / replace parts as necessary.
2. Check the water heater and related plumbing for leaks. Repair any that are found.
3. Check the area around the water heater for flammable liquids or combustible materials. If any are found, remove from the area.
4. Check the heating elements while the heater is in operation. If the elements are hissing / singing excessively, they may need to be cleaned. Inspect the elements and clean if necessary.
5. Inspect the Temperature and Pressure (T&P) Relief Valve. See instructions below.
6. Turn power supply off to the water heater. Open the drain valve and drain a few gallons of water from the tank to clear any hard water deposits. Once complete, close the drain valve and restore power to the water heater.

Warning:

T &P Relief Valve Maintenance Instructions:

• Annually : Certain naturally occuring mineral deposits may adhere to the valve, blocking waterways and rendering the valve inoperative. The T&P Relief Valve lever must be operated to ensure the waterways are clear. If waterways are clear, hot water will discharge from the valve. Take precautions to avoid personal injury and property damage from contact with hot water. Before operating lever, check to see that a discharge line is connected to the valve, directing the flow of hot water from the valve to a proper place of disposal.
• Replacement of the valve is required if no water flows when the lever is operated. Turn the water heater off until the valve is replaced.
• If water flows from the valve, drain a few gallons from the tank to ensure the water flows freely.
• At least once every three years: To ensure that the T&P valve has not been affected by corrosive water conditions and that the valve and discharge line have not been altered or tampered with illegally, relief valves should be inspected, and replaced, if necessary, by a licensed plumbing contractor or qualified service technician. Failure to comply with these guidelines could result in failure of relief valve operation, and possibly result in substantial property damage, severe personal injury, or death.

Troubleshooting

No Hot Water

| Manual disconnect switch turned off| Turn switch on
1.        Blown fuse or circuit breaker tripped

2.        Shorted or improper wiring

3.        Circuit overloaded

4.        Grounded element or thermostat

| 1.        Replace fuse or reset breaker

2.        *Replace, repair, or rewire per detail

3.        *Provide adequate circuit to reduce load

4.        *Replace

Manual Reset High Limit (ECO) open

1.        Thermostat(s) defective or out of calibration

2.        ECO(s) defective or out of calibration

3.        Heat build-up due to loose wires

| Refer to Part 6, this manual.

1.        *Replace thermostat(s)

2.        *Lower thermostat setting or replace

3.        *Tighten wire connections

Improper wiring| *Check and rewire per Wiring Detail

Not Enough Hot Water

| Heater undersized| Reduce rate of heater use
Defective element(s)| Check amperage, replace element if low
Miswired or defective thermostat causing only one element to work| Check wiring or replace thermostat

Water Too Hot or Not Hot Enough

| Thermostat setting too high or low| Change setting as required
Thermostat out of calibration| *Replace thermostat
Thermostat access panel(s) and/or insulation not in place| Inspect and replace as needed
Thermostat(s) not resting tightly against mounting plate| Ensure that retaining spring(s) or mounting screws hold thermostat(s) tightly to mounting plates

T &P Valve Discharges

| Improperly seated valve| Open and close the handle to try to reseat valve
Thermal expansion in closed water system| Install a thermal expansion tank

Damaged / defective valve

| Replace relief valve

NOTE: DO NOT plug T&P valve under any circumstances

Water Leaks

| Loose connection between inlet / outlet piping, relief valve, and/or hex nut union on tank fittings| Tighten fittings
Damaged seal ring washer| Replace seal rings as required
Gasket around heating element(s)| Inspect and replace gasket if necessary

Hot Water Odor

| High sulfate or mineral content in water supply| Drain and flush water heater. Refill.
Bacteria in water supply| Check with local water treatment specialist or utility to identify and address this problem.
Noisy Operation| Hard water scale built up on element(s)| *Remove and clean

Table 7 – Troubleshooting – *See Scald / Electric Shock Warnings and Caution Statements, this Table.

Warning : The risk of scald injury increases as you increase water temperature. Use a water tempering or mixing valve and extreme caution when using hot water to avoid scald injury. Consult codes for conformance. Failure to follow the instructions in this warning statement could result in serious personal injury or death from scalds. Be sure to disconnect electrical power before performing service. Failure to do so could result in electrical shock, property damage, serious personal injury, or death.
Caution : If draining of the water heater is necessary, open the T&P valve or a hot water tap to prevent vacuum buildup in the tank and piping.

Replacement Parts

Gallons| # Elements| Simultaneous| 208| 240| 277| 480|
---|---|---|---|---|---|---|---
 | ****

3

| 12,500| B3W125N| NO| ****

NO

| NO|
 | 13,500| B3W135N| C3W135N| E3W135N|
80,| 14,000|  | NO| D3W140N| NO|
15,000| C3W150N| D3W150N| E3W150N|
100,|  |
115| NO|
16,000| NO| D3W160N| NO|
 | 16,500|  | C3W165N| NO| E3W165N|
 | 18,000|  | NO| D3W180N| E3W180N|

Medium Duty Commercial Stainless Steel Electric Water Heater

Limited Warranty

Westinghouse warrants each medium duty commercial stainless steel electric water heater and its components to be free from defects in materials and workmanship according to the following terms, conditions, and time periods. UNLESS OTHERWISE NOTED THESE WARRANTIES COMMENCE ON THE DATE OF INSTALLATION. This limited warranty is only available to the original consumer purchaser (hereinafter “Owner”) of the water heater, and is non-transferable.

WARRANTY PERIODS

Water heater is registered online within ninety

(90) days of the installation date.

| ****

One (1)

Years

| ****

Ten (10)

Years

NOTE: Any water heater used in a leasing or rental program IS EXCLUDED from an Extended Warranty and will be covered by the Standard Warranty detailed below.
Standard Medium Duty Commercial Use Warranty| Parts| Tank
Water heater is used in a leasing or rental program, or| ****

One (1)

Year

| ****

Five (5) Years

Water heater is not registered online within ninety (90) days of the installation date.

COVERAGE

A. During the first year after the original date of installation in the dwelling, Westinghouse warrants that it will repair or replace, at its option, any defective or malfunctioning component of the water heater. Replacement components will be warranted for ninety (90) days.

B. Should a defect or malfunction result in a leakage of water from the water heater within the above-stated warranty periods due to defective material or workmanship, malfunction, or failure to comply with the above warranty, with such defect or malfunction having been verified by an authorized Westinghouse representative, Westinghouse will repair or replace, at its option, the defective or malfunctioning water heater. Replacements will be of the nearest comparable model available at the time of replacement. The replacement water heater will be warranted for the unexpired portion of the applicable warranty period of the original water heater.

C. In the event of a leakage of water of a replacement water heater due to defective material or workmanship, malfunction, or failure to comply with the above warranty, Westinghouse reserves the right to refund to the Owner the published wholesale price available at the date of manufacture of the original water heater.

D. If government regulations, industry certification, or similar standards require the replacement water heater or component(s) to have features not found in the defective water heater or component(s), the Owner will be charged the difference in price represented by those required features. If the Owner pays the price difference for those required features and/or to upgrade the size and/or other features available on a new replacement water heater or component(s), the Owner will also receive a complete new limited warranty for that replacement  water heater or component(s).

E. If at the time of a request for service the Owner cannot provide a copy of the original sales receipt or the warranty registration, the warranty period for the water heater shall then be deemed to have commenced on the date of manufacture of the water heater and NOT the date of installation of the water heater, and be covered by the unexpired portion of the Standard Medium Duty Commercial Use Warranty detailed above.

F. This warranty extends only to water heaters utilized in heating applications that have been properly installed by qualified professionals based upon the manufacturer’s installation instructions.

G. It is expressly agreed between Westinghouse and the Owner that repair, replacement, or refund are the exclusive remedies of the Owner.

OWNER RESPONSIBILITIES
The Owner or Qualified Installer / Service Technician must:

1. Have a relief valve bearing the listing marks of the American Society of Mechanical Engineers (ASME) installed with the water heater assembly in accordance with federal, state, and local codes.
2. Have a vacuum relief valve certified to ANSI Z21.22 – Relief Valves for Hot Water Supply Systems – installed with the water heater assembly in accordance with federal, state, and local codes and in installations prone to vacuum related damages.
3. Maintain the water heater in accordance with the maintenance procedure listed in the manufacturer’s provided instructions. Preventive maintenance can help avoid any unnecessary breakdown of the water heater and keep it running at optimum efficiency.
4. Maintain all related system components in good operating condition.
5. Use the water heater in an open system, or in a closed system with a properly sized and installed thermal expansion tank.
6. Use the water heater at water pressures not exceeding the working pressure shown on the rating plate.
7. Keep the water heater free of damaging scale deposits.
8. Make provisions so if the water heater or any component or connection thereto should leak, the resulting flow of water will not cause damage to the area in which it is installed.

Customer Installation Record Form
The following form should be completed by the qualified installer/service technician for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.

Customer’s Name|
---|---
Date of Installation|
Installation Address|
Product Name / Serial Number(s)|
Comments|
Installer’s Code / Name|
Installers Phone Number|
Signed by Installer|
Signed by Customer|
Installation Notes|

IMPORTANT
Customer: Please only sign after the qualified installer/service technician has fully reviewed the installation, safety, proper operation, and maintenance of the system. If the system has  any problems please call the qualified installer/service technician. If you are unable to make contact, please call your sales representative.
Distributor /Dealer: Please insert contact details.

References

• Westinghouse Water Heating

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