Westinghouse WGRGH 150 Series

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WHL-591 REV. 12.19.16

Residential

Gas Hybrid

Water Heater

USER’S INFORMATION

MANUAL

WGRGH**150 / 199 Models*

*“NG” denotes natural gas, “LP” denotes propane gas

NOTICE: Westinghouse reserves the right to make product changes or updates without notice and will not be held liable for

typographical errors in literature.

NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.

The surfaces of these products contacted by consumable water contain less than 0.25% lead by weight, as required by the Safe

Drinking Water Act, Section 1417.

IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING

PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. DO NOT STORE GASOLINE OR OTHER FLAMMABLE VAPORS

AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER WATER HEATER.

WHAT TO DO IF YOU SMELL GAS

 Do not try to light any water heater.

 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. Installation and service must be provided by a qualified installer,

service agency, or the gas supplier.

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The Westinghouse Residential Gas Hybrid Water Heater (Models WGRGH**150 / 199) is a gas-fired appliance designed to provide domestic hot water. It features an automatic ignition device, eliminating the need for a pilot light. The "NG" designation indicates natural gas, while "LP" indicates propane gas. This water heater is certified to NSF/ANSI 61-G & 372 standards and is ETL US listed, with Intertek certification for Ultra Low NOx Emissions, complying with SCAQMD Rule 1146.2.

Function Description:

This water heater combines gas heating with a hybrid design to efficiently heat water for residential use. It is equipped with an automatic ignition system that lights the burner as needed, ensuring efficient operation. The unit includes a control panel for setting desired water temperatures and displaying operational status or error codes. A key safety feature is the factory-installed overheating prevention device, which shuts down the water heater if the water temperature exceeds a set limit, preventing scalding. The device also incorporates a freeze protection function, utilizing a ceramic heater inside the heat exchanger to prevent freezing in cold conditions.

Important Technical Specifications:

Gas Type: Available in Natural Gas (NG) and Liquid Propane (LP) versions. The specific gas type is indicated on the rating plate.
Ignition: Automatic ignition device; no pilot light.
Temperature Control: Adjustable thermostat with a default temperature of 125°F (52°C). Hot water temperatures over 125°F can cause severe burns.
Safety Certifications: NSF/ANSI 61-G & 372, ETL US listed, Intertek certified for Ultra Low NOx Emissions (SCAQMD Rule 1146.2).
Lead Content: Surfaces contacted by consumable water contain less than 0.25% lead by weight, as required by the Safe Drinking Water Act, Section 1417.
Power Supply: Requires electrical power (120V 60Hz) for operation, with a 3A fuse on the main controller.
Flow Activation: The unit activates when the inlet water flow sensor detects flow over 0.5 gpm.
Blocked Vent Shutoff System: Equipped with a safety system that triggers error codes (Er:29, Er:41, or Er:94) if the vent is blocked.

Usage Features:

Operating Instructions:
1. Ensure the water heater is completely filled with water.
2. Turn OFF electrical power to the unit.
3. Turn the gas shut-off valve clockwise to "OFF."
4. Wait five minutes to clear any gas. If gas is still smelled, follow safety instructions for gas leaks.
5. Turn the manual gas shut-off valve counter-clockwise to "ON."
6. Turn ON electrical power to the appliance.
7. Wait for the default temperature (125°F) to display, then set the desired water temperature and turn on a hot water faucet.
8. Set the thermostat to the desired setting.
Gas Leak Safety: If gas is smelled, do not light any appliance, touch electrical switches, or use a phone in the building. Immediately call the gas supplier from a neighbor's phone or the fire department.
Water Temperature Safety: Water temperatures over 125°F can cause severe burns. Users are advised to feel water before bathing or showering, especially for children, the disabled, and the elderly who are at higher risk of scalding. Temperature limiting valves are available for additional safety.
Flammable Materials Warning: Do not store gasoline, solvents, adhesives, or other flammable products near the water heater. Vapors are heavier than air, invisible, and can travel along the floor to an ignition source.
Carbon Monoxide Safety: Exhaust gas leaking into living spaces can cause carbon monoxide poisoning. If a leak is suspected, shut down the water heater, close the gas valve, open windows for ventilation, and call a qualified service technician.
Water Heater Cabinet: The cabinet must be closed and secured with screws while the water heater is running.
Error Codes: The control panel displays error codes (e.g., E80 for no water, Er:29, Er:41, Er:94 for blocked vent).

Maintenance Features:

Annual Service (by Qualified Service Technician):
- Inspect and clean the interior cabinet, condensate trap, and condensate neutralizer (if applicable).
- Check for water, gas, flue, and condensate leaks.
- Verify exhaust vent and intake piping condition, bracing, and seals.
- Check water pressure, piping, and expansion tank.
- Inspect and clean the ignition electrode, ignition and ground wiring, and all control wiring and connections.
- Check burner flame pattern.
- Clean heat exchanger and flue ways, and clean the burner head if combustion or performance is poor.
Owner Maintenance:
- Periodically: Check the area around the water heater, remove blockages from outdoor exhaust vent and intake pipe terminations (if accessible), and check the temperature/pressure gauge.
- Monthly: Visually inspect exhaust vent and intake piping and bracing for damage or blockages. Check the pressure relief valve and the condensate drain system (ensure no flue gas leakage and that the condensate neutralizer is full of marble chips).
- Every 6 Months: Check water heater piping and gas supply piping for corrosion or leaks.
Daily Maintenance:
- Check the surrounding area for combustible/flammable materials and air contaminants (chlorine, fluorine). Remove any found items or relocate the intake pipe.
- Ensure the water heater cabinet is closed and secured.
- Verify the power cord is properly connected and the main power line is connected to the manual switch box.
- Observe the control panel for power-on status and error codes.
- Check exhaust vent and intake pipe terminations for obstructions.
Freeze Protection: The water heater has a built-in freeze protection function. If the unit is not used for extended periods in freezing conditions, it should be shut down and completely drained. Exposed water pipes should be thermally insulated.
No Disassembly: Users should not attempt to disassemble the water heater. Repairs must be performed by a qualified service technician.