Commercial High Efficiency Water Heater
Use & Care Manual with Installation Instructions
Important Safety Information
⚠️ Recognize this symbol as an indication of Important Safety Information!
Do Not Destroy this Manual. Please read carefully and keep in a safe place for Future Reference.
NOTICE: This water heater is designed for use in a commercial application and its installation and maintenance should be performed by qualified, licensed service personnel.
CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
WARNING: If the information in these instructions are not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
FOR YOUR SAFETY!
- Do not store or use gasoline or other flammable vapors or liquids or other combustible materials in the vicinity of this or any other appliance. To do so may result in an explosion or fire.
- What to do if you smell gas: Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you cannot reach your gas supplier, call the fire department. Do not return to your building until authorized by the gas supplier or fire department.
- Improper installation, adjustment, alteration, service or maintenance can cause injury, property damage or death. Refer to this manual. Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Safety Alert Symbol Definitions:
This is the safety alert symbol. ⚠️ Recognize this symbol as an indication of Important Safety Information!
- DANGER: An imminently hazardous situation that will result in death or serious injury.
- WARNING: A potentially hazardous situation that could result in death or serious injury and/or damage to property.
- CAUTION: A potentially hazardous situation that may result in minor or moderate injury.
- NOTICE: Attention is called to observe a specified procedure or maintain a specific condition.
General Safety Precautions
Water temperatures over 125°F (52°C) can cause severe burns instantly or death from scalds. This is the preferred starting point for setting the control for supplying general purpose hot water.
The most energy-efficient operation results when the temperature setting is the lowest that satisfies the needs consistent with the application.
Time / Temperature Relationships in Scalds:
| Temperature | Time to Produce Serious Burn |
|---|---|
| 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 |
The temperature of the water in the heater can be regulated by setting the temperature on the display (see pages 25-26). To comply with safety regulations, the temperature was set at 120°F before shipment.
HOTTER WATER INCREASES THE POTENTIAL FOR HOT WATER SCALDS.
Children, disabled, and elderly are at highest risk of being scalded. Feel water before bathing or showering. Temperature limiting valves are available.
NOTICE: Mixing valves are available for reducing point-of-use water temperature by mixing hot and cold water in branch water lines. Contact a licensed plumber or the local plumbing authority for further information.
To find hot water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream.
Flammable Vapors Warning: Vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater. Keep flammable products in approved containers, tightly closed, and out of children's reach. The pilot flame can ignite flammable vapors, which cannot be seen, are heavier than air, go a long way on the floor, and can be carried from other rooms by air currents. Installation must ensure main burner and pilot flames are at least 18" above the floor if flammables are stored or used in the area.
Liquefied Petroleum (LP) Gas Warning: LP gas is heavier than air and collects in lower areas. Always look and smell for LP leaks before lighting. Use a soapy solution to check fittings. Gas detectors are recommended. If LP gas is present or suspected: DO NOT attempt to find the cause yourself; DO NOT try to light any appliance; DO NOT touch any electrical switch; DO NOT use any phone in your building. Leave the building immediately and contact the gas supplier, a qualified service agency, or the fire department. Keep the area clear until safe.
Venting Warning: Failure to properly vent the water heater to the outdoors can result in unsafe operation, fire, explosion, or asphyxiation from carbon monoxide. Never operate this water heater unless it is properly vented and has an adequate air supply. Inspect the vent system at least annually.
Gas Type Warning: Do not connect this water heater to a fuel type not in accordance with the unit data plate. These units are not certified for any other type of fuel.
LP Installation Warning: LP appliances should not be installed below-grade if prohibited by law.
Introduction
Local Installation Regulations
Installation must comply with these instructions, local codes, utility company requirements, and/or the latest edition of the National Fuel Gas Code (ANSI Z223.1 in the US) or CAN/CSA B149.1 in Canada.
Water Heater Location
Direct Vent Design: All air for combustion and products of combustion are routed directly to and from the outside.
Power Vent Unit: Combustion air is obtained from the surrounding area. Ensure adequate air supply.
Install in a clean, dry location near vent terminals. Insulate long hot water lines. Protect from freezing temperatures.
Do not install in a space where flammable vapors are used or stored (e.g., garages). Flammable vapors can be carried by air currents and ignited by the burner flame.
All models are certified for installation on combustible floors and in alcoves. Observe minimum side and top clearances shown on the rating label. Provide 18 inches front clearance for inspection and servicing.
If installed on carpeting, place a metal or wood panel beneath the water heater extending at least 3 inches in all directions. If installed in an alcove, the entire floor must be covered by the panel.
NOTICE: Auxiliary catch pan installation MUST conform to applicable local codes.
CAUTION: Locate the water heater where leakage will not cause damage to adjacent areas or lower floors. Install a suitably drained catch pan if necessary.
Restaurant Installation: For NSF International listing, seal the unit to the floor and use Rheem's UL Listed NSF Seal Kit.
Corrosive Atmospheres: Do not install near air supply containing halogenated hydrocarbons (e.g., beauty shops, dry cleaning establishments, photo processing labs, bleach/pool chemical storage). These can cause corrosion and shorten appliance life. The limited warranty is voided by failure due to a corrosive atmosphere.
The manufacturer disclaims responsibility for damage or defect caused by unauthorized attachments or energy-saving devices.
Inspect Shipment
Check for possible damage. Claims must be filed against the carrier.
Thermal Expansion
Determine if a check valve exists in the inlet water line. A check valve creates a "closed water system" where expanding water due to heating cannot flow back to the city main. This can cause dangerous pressure increases.
In a "closed system," install an expansion tank in the cold water line between the water heater and the check valve to control thermal expansion.
If a recirculation line is installed, connect it to a tee near the inlet and install a check valve in the recirculation line.
Installation Instructions
Water Connections
Connect inlet water to the lower coupling and outlet water to the upper coupling. Use supplied diffuser tubes. Cap unused connections. Use clean, new galvanized steel, copper, or approved plastic pipe. Unions and a shut-off valve in the cold water inlet line are recommended for servicing.
A thermostatically controlled mixing valve is recommended for general purpose hot water to reduce scald risk. Contact a licensed plumber.
Install thermometers near the outlet of the water heater and storage tank(s).
Relief Valve
A factory-installed combination pressure and temperature relief valve is provided. Do not place any valve between the relief valve and the water heater. The pressure rating must not exceed 150 psi (160 psi for ASME models).
WARNING: Connect the outlet of the relief valve to a suitable open drain. The discharge line must pitch downward, be no smaller than the valve outlet, and not be threaded or concealed. Protect from freezing. No valve, restriction, or reducer coupling should be installed in the discharge line. Local codes govern relief valve installation.
The relief valve's Btu/h rating must equal or exceed the water heater's input rating.
Gas Supply
Inlet gas pressure must not exceed 10.5" w.c. (Natural gas) or 13.0" w.c. (L.P. gas). Minimum inlet pressure is shown on the rating plate.
Use an adequately sized gas line. Install a ground joint union and manual shutoff valve near the water heater. A sediment trap must be installed downstream of the shutoff valve.
Leak Testing: Test all connections and fittings with a soapy water solution at normal operating pressure. NEVER use an open flame.
Pressure Testing: Disconnect the water heater and shut-off valve during high pressure testing of the gas supply system (over 1/2 psi). Isolate the water heater by closing the manual shut-off valve for pressure testing at or below 1/2 psi.
Condensate Filling
THE CONDENSATE TRAP MUST BE FILLED WITH WATER BEFORE OPERATING. Pour about one cup of water into the trap via the plastic cap on the left side. This is a condensing appliance with a condensate removal system. Condensate has a low pH and must comply with local codes. Use plastic tubing for the condensate line; avoid metal. A condensate removal pump may be needed if the drain is higher than the outlet. Ensure the line is not exposed to freezing.
Wiring
A polarized 120V 50/60 Hz power supply with disconnect means must be connected to the black and white leads. Maximum current draw is 6 Amps. The water heater must be electrically grounded according to local codes or the National Electrical Code (ANSI/NFPA 70) or CSA C22.1 in Canada. Refer to page 31 for internal wiring diagrams.
WARNING: DO NOT connect this water heater to an existing vent or chimney; it must be vented separately from all other appliances.
Venting
This unit can be vented as a Direct Vent or Power Vent. Use only 2, 3, or 4-inch diameter pipe (PVC, CPVC, or ABS, subject to local code restrictions). For Canada, all exhaust venting materials must meet ULC-S636.
Pipe runs must be adequately supported. Do not restrict thermal expansion and contraction.
If replacing an existing power-vented water heater, inspect the existing venting system for correct materials, lengths, terminal locations, cracks, or sagging. Correct any issues before installation.
Vent Pipe Connection: Refer to Figure 3 for connection locations. The vent terminal with a screen must be installed on the air intake side for Power Vent units. Keep vent pipe lengths to a minimum. Refer to Table 1 for pipe sizes and total equivalent lengths. Do not exceed chart limits. Use step-up/down fittings if necessary.
When Direct Venting through a side wall, vent terminals must be on the same exterior wall, mounted horizontally, and at least 24 inches apart.
Joining Pipes and Fittings: Use appropriate ANSI/ASTM or ULC-S636 standards. Use recommended solvent cements and primers for PVC, CPVC, or ABS. Follow cementing procedures carefully: clean pipe and socket, apply primer, apply cement, insert pipe, and hold for 30 seconds. Allow curing time.
CAUTION: Do not use curdled or thinned solvent cement. Use low-temperature cement below 32°F. Use appropriate cleaner/primer for the pipe type.
WARNING: Solvent cements and primers are highly flammable. Provide adequate ventilation and do not assemble near heat or open flame. Do not smoke. Avoid skin/eye contact.
Direct Vent Installation: Check for flue gas recirculation into the air intake terminal. This can occur even with minimum separation distances depending on external factors. Signs include frosted intake terminals, condensate in the system, or oxidation. Correction may involve angling intake, increasing distance, or using inside air. Ensure terminals are not obstructed, especially in cold weather.
Intake and exhaust venting components must be the same diameter. Ensure condensate drains freely and does not freeze. Install condensate trap to prevent flue gas discharge into the room.
Minimize stress on pipes and fittings. Follow procedures for venting through walls, ensuring proper hole sizes and terminal spacing (min. 24", max. 36" apart horizontally).
| Model | Power Direct Vent Vent Pipe Size (In.) | Maximum Vent Length for Inlet or Outlet (ft.) | Number of 90° Elbows (Inlet/Outlet) | Number of 45° Elbows | Minimum Pipe Length Required (ft) | Maximum Pipe Length (ft) | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 3 | 4 | GHE100-130 | GHE100-160 | GHE100-200 | |||||
| GHE100-130 | 2" | 3" | 4" | 20 | 60 | 85 | For each 90° elbow, reduce pipe length by 5 feet. For each 45° elbow, reduce pipe length by 2.5 feet. | |||
| GHE100-160 | 2" | 3" | 4" | 20 | 50 | 75 | ||||
| GHE100-200 | 2" | 3" | 4" | 20 | 40 | 65 | ||||
| GHE100-250 | n/a | 3" | 4" | n/a | 40 | 65 | ||||
| GHE100-300 | n/a | 3" | 4" | n/a | 40 | 40 | ||||
| GHE100-350 | n/a | 3" | 4" | n/a | 40 | 40 | ||||
Power Vent: Similar charts apply for Power Vent, using only the outlet vent length.
NOTICE: Do not exceed venting distances or number of elbows listed. Exceeding maximums may cause malfunction or lockout.
Concentric Vent Terminal Installation
This kit is for terminating this water heater only. Follow kit instructions. Determine termination location. Cut a 5" diameter hole. Cement the concentric Y fitting to the larger pipe and the rain cap to the smaller pipe. Install the assembly through the hole and roof boot/flashing. Secure to structure. Cement heater pipes to the Y fitting. Operate heater to check connections.
Installation Checklist
- Water Heater Location: Close to vent, indoors, protected from freezing, proper clearances, adequate air supply, protected from water damage, sufficient service room.
- Water Supply: Heater filled, air vented, connections tight.
- Gas Supply: Shut-off valve, union, sediment trap installed. Approved pipe compound used. Leak tested. Gas Company inspected if required.
- Relief Valve: Discharge line to open drain, protected from freezing.
- Venting: All pipe connections secure, terminals mounted properly.
- Condensate: Trap installed and primed.
| Iron Pipe Size, Inches | Nominal Internal Diameter, Inches | Length of Pipe, Feet | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 125 | 150 | 175 | 200 | ||
| 1/2 | .622 | 132 | 92 | 73 | 63 | 56 | 50 | 46 | 43 | 40 | 38 | 34 | 31 | 28 | 26 |
| 3/4 | .824 | 278 | 190 | 152 | 130 | 115 | 105 | 96 | 90 | 84 | 79 | 72 | 64 | 59 | 55 |
| 1 | 1.049 | 520 | 350 | 285 | 245 | 215 | 195 | 180 | 170 | 160 | 150 | 130 | 120 | 110 | 100 |
| 1 1/4 | 1.380 | 1,050 | 730 | 590 | 500 | 440 | 400 | 370 | 350 | 320 | 305 | 275 | 250 | 225 | 210 |
| 1 1/2 | 1.610 | 1,600 | 1,100 | 890 | 760 | 670 | 610 | 560 | 530 | 490 | 460 | 410 | 380 | 350 | 320 |
| 2 | 2.067 | 3,050 | 2,100 | 1,650 | 1,450 | 1,270 | 1,150 | 1,050 | 990 | 930 | 870 | 780 | 710 | 650 | 610 |
| 2 1/2 | 2.469 | 4,800 | 3,300 | 2,700 | 2,300 | 2,000 | 1,850 | 1,700 | 1,600 | 1,500 | 1,400 | 1,250 | 1,130 | 1,050 | 980 |
| 3 | 3.068 | 8,500 | 5,900 | 4,700 | 4,100 | 3,600 | 3,250 | 3,000 | 2,800 | 2,600 | 2,500 | 2,200 | 2,000 | 1,850 | 1,700 |
| 4 | 4.026 | 17,500 | 12,000 | 9,700 | 8,300 | 7,400 | 6,800 | 6,200 | 5,800 | 5,400 | 5,100 | 4,500 | 4,100 | 3,800 | 3,500 |
For Canada, refer to CAN/CSA B149.1 for gas piping capacity.
Operating Instructions
Read and follow all safety instructions on the label and in this manual. Failure to do so can result in unsafe operation, property damage, personal injury, or death.
Operating Steps:
- STOP! READ THE SAFETY INFORMATION.
- Set the "ON/OFF" switch to the "OFF" position.
- This appliance has an automatic ignition device. DO NOT try to light the burner by hand.
- If you smell gas, STOP! Follow safety instructions (Section B). If no gas smell, proceed.
- Turn on electrical power to the appliance via the switch next to the control display.
- If the appliance will not operate, follow instructions to turn off gas.
- Water temperature adjustment is approximately 120°F. Set the thermostat to the desired temperature.
CAUTION: Hotter water increases the risk of scald injury. Consult the manual before changing temperature.
WARNING: Turn off all electric power before servicing.
To Turn Off Gas to Appliance:
- Turn off all electric power to the appliance if service is to be performed.
- Turn the "Manual Gas Valve Knob" to the "OFF" position.
Safety Precautions (Operation)
- Turn off manual gas shut-off valve if water heater has been subjected to overheating, fire, flood, physical damage, or if gas supply fails to shut off.
- Do not turn on water heater unless it is filled with water.
- Do not turn on water heater if cold water supply shut-off valve is closed.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. If such flammables must be used, open doors and windows for ventilation, and shut off all gas burning appliances in the vicinity, including pilot lights, to avoid vapors igniting.
- Do not allow combustible materials to accumulate near water heater.
- If there is difficulty understanding operation or maintenance instructions, contact a qualified person or serviceman.
Hydrogen Gas Caution: Hydrogen gas can be produced in a hot water system not used for a long period (generally two weeks or more). Hydrogen gas is extremely flammable! To dissipate such gas and reduce injury risk, open a hot water faucet for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is present, you may hear air escaping. Do not smoke or use an open flame near the faucet when it is open.
Temperature Settings
The temperature is adjusted to 120°F when shipped. It is adjustable up to 185°F (85°C) for commercial use. Water temperatures over 125°F (52°C) can cause severe burns instantly or death from scalds.
Safety and energy conservation are factors. The most energy-efficient operation occurs at the lowest setting that satisfies needs.
WARNING: When supplying general purpose hot water, a thermostatically controlled mixing valve is recommended to reduce point-of-use water temperature. Contact a licensed plumber.
Check Input
Consult the local Gas Company for the heating value of the gas supplied. Check input by timing the gas meter with all other appliances off. Formula: INPUT (btu/h) = (3,600) x (Heating Value) x (Cubic Feet Timed) / (Seconds Clocked).
WARNING: DO NOT exceed Input shown on the water heater's rating plate!
Emergency Shut Down
WARNING: Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance.
WARNING: Do not use this appliance if any part has been under water. Call a qualified service technician. If subjected to fire or physical damage, turn off gas at the manual shut-off valve. Do not operate until checked by a qualified service technician.
User Interface
The user interface allows control and monitoring of the water heater.
- MENU: Enter user menu mode for access to Temperatures, Heater Status, and Heater Information.
- UP/DN: Navigate through heater menus for adjustment of settings.
- OK: Confirm storage of adjustments to system settings.
- HELP: Access heater information in the event of a system fault.
- DISPLAY WINDOW: Provides information as changes are made to the control.
Temperature Adjustment
1. Press the "MENU" button to enter menu mode.
2. Press UP or DN to move the arrow to the "Temperatures" header. Press OK to enter the "Temperatures" submenu.
3. To adjust the water temperature set point, press the OK button. The Set Point value will blink. Press UP or DN buttons to change the value. Press OK to confirm the setting.
The interface then moves to the next adjustable parameter (e.g., Differential setting).
Care and Cleaning
Proper maintenance ensures years of dependable service. Establish a regular routine maintenance program. Periodic inspection of the relief valve and venting system by qualified technicians is recommended.
Routine Preventive Maintenance
- Pressure Switch: Inspect inlet and tubing for debris or blockage. Clean tubing periodically.
- Collector Pan: Remove any particles.
- Condensate Trap: Check for blockages.
- Electrical Connections: Periodically inspect all electrical connections and wiring.
- Tank: Clean the tank of deposits. Hard water scale reduces efficiency and shortens life. Initial inspection should be within six months. Cleaning may be required if scale accumulates above the drain valve. Use a wet-dry shop vac with a nozzle fashioned from polyethylene pipe for scraping and removing scale.
To Clean or Inspect Tank:
- Shut off gas valve and drain tank.
- Remove tank clean-out cover, cut and remove insulation plug.
- Loosen nut on seal plate assembly, twist yoke sideways, push inward, and remove assembly.
- Remove scale from flue tubes and tank bottom. Avoid damaging the glass lining.
- Clean seal plate, install a new gasket, and reinstall the seal plate. Fill tank with water and check for leaks. Reinstall insulation plug and clean-out cover, then relight the water heater.
If chemical cleaners are preferred, follow instructions cautiously. DO NOT use muriatic or hydrochloric acid (HCl) based cleaners.
Anode Inspection
In areas with aggressive water, periodically inspect the anode(s). Replace when more than 6 inches (15 cm) of core wire is exposed at either end.
Seasonal Operation
If the water heater is idle for 60 days or more, turn it off. Drain the heater and piping if subject to freezing temperatures. Have operation checked by a qualified service technician before placing back in service. Refer to Hydrogen Gas caution on page 24.
Venting System
Inspect the venting system at least yearly to ensure passageways are free and unobstructed. Ensure the vent connector is properly positioned and attached. Remove any obstructions.
Troubleshooting
Save time and money! Review these charts first to avoid unnecessary service calls.
If the display screen is flashing, the burner did not light. To reset, press "HELP" then "OK". On initial startup, it may take a few cycles to clear the "flashing" screen if gas was off. If the unit was operating and shows a flashing display, there is another issue.
Basic Trouble Codes:
- A01: Burner did not light during three consecutive trials.
- A25: Pressure switch did not close.
- A26: Pressure switch was not open on initial check.
- E21: Incorrect polarity on power supply.
| Problem | Possible Causes | What To Do |
|---|---|---|
| Display not on | Is there power to unit? Is display not completely installed? Is harness from control board connected? | Verify 120 Vac to Control Board. Ensure display pins are inserted into circuit board. Check wire harness connection. |
| Blower does not run | No power to blower motor. | Verify power to Control Board and that all harnesses to the blower are properly installed. Check for damage to harness or connectors. |
| Unable to light the main burner | Air in gas line. | Let the unit cycle at least three times to remove air. If unit does not try to light, contact a qualified service technician to purge the gas line. |
| Manual Gas Shut-off valve(s) not open. | Check to make sure all manual gas shutoff valves are open. | |
| Blocked Inlet or Exhaust Vent pipe. | Contact a qualified Service Technician to evaluate vent pipes for blockage. | |
| Pressure Switch. Wire Connection not fully secured. | Ensure pressure switch hoses are not kinked or disconnected. Blocked vent systems cause pressure switch to shut off unit. Contact a qualified service technician to evaluate vent system. Confirm wire connections. | |
| Main burner does not stay lit | Gas Control Problem. Incorrect wiring polarity. | Contact a qualified service technician. |
| Unit or Electrical supply line not properly grounded. | Verify that the electrical supply line and unit have proper ground connection. | |
| Burner flame not contacting sensor rod. | Call a qualified Service Technician to review flame rectification. | |
| Not enough or no hot water | Water usage may have exceeded the capacity. | Wait for the water heater to recover after abnormal demand. |
| Low gas pressure. The Display setting may be set too low. Leaking or open hot water faucets. "ON/OFF" switch turned off. Colder supply water. | Check gas supply pressure. See "User Interface" section to set water temperature. Ensure all faucets are closed. Turn switch "ON". Incoming water temperature might be lower than when unit was initially installed; this requires a longer heat-up cycle. | |
| Burner not staying on. | Refer to "Main Burner" section. | |
| Water is too hot | The Display setting is set too high. | See the "User Interface" section of this manual to set water temperature. |
CAUTION: Make certain power to water heater is "OFF" before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control burner, vent connectors or other safety devices. Refer repairs to qualified service personnel.
NOTE: A GHE Training Manual is available through the Technical Services Department for a more detailed Troubleshooting and Repair Guide.
Customer Service
Instructions For Placing a Parts Order
All parts orders should include: The model and serial number of the water heater from the rating plate. Specify type of gas (natural or LP). Part description and number of parts desired.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control burner, vent connectors or other safety devices. Refer repairs to qualified service personnel.
Replacement Parts List: Flame Sensor Kit, Blower/Gas Valve/Burner Assembly Kit, On/Off Switch, Pressure Switch Assembly, Control Board, Igniter Kit, Display Kit, Anode, Relief Valve, Water Temperature and ECO Probe, Exhaust Gas Temperature Probe, Condensate Trap, Hand Hole Gasket, Drain Valve.
How to Obtain Service Assistance
1. Contact your installer, plumbing contractor, or service agency first. If unavailable, refer to telephone directory commercial listings or local utility for qualified service assistance.
2. If the problem is not solved to your satisfaction, contact the Manufacturer's National Service Department:
- In the U.S.A.: Rheem Manufacturing Co., Water Heater Division, 1241 Carwood Court, Montgomery, Alabama 36117. Phone: 1-800-432-8373.
- In CANADA: Rheem Canada, Ltd./Ltée, 125 Edgeware Road, Unit 1, Brampton, ON L6Y 0P5. Phone: 1-800-268-6966.
When contacting the manufacturer, provide the following information:
- Model and serial numbers from the rating plate.
- Address where water heater is located.
- Name and address of installer and any service agency.
- Date of original installation and dates of any service work.
- Details of the problem.
- List of people, with dates, contacted regarding the problem.
Required Gaskets for Normal Maintenance: SP5886 Tank Handhole Sealplate Gasket.
To Order Other Parts: Provide description, quantity, complete model number, serial number, and specify gas type.
Wiring and Schematic Diagrams
The document includes wiring diagrams for internal components and a schematic diagram. These diagrams illustrate the electrical connections and flow of control signals within the water heater. Key components shown include the control board, display, blower, gas valve, igniter, sensors (temperature, flue safety limit), and power supply connections.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
