A
Electrical Connections
WARNING
Domestic | Must Be Vertical To |
Remove Air Bubbles | |
Hot Water |
|
Out | Vacuum |
Mixing | Relief |
Valve | |
Valve |
|
Hot |
|
Water |
|
Out |
|
Unions | To Air |
| |
| Handler |
| |
| Valve |
Expansion Tank
Cold Water Inlet
Flow Control
Pump Valve
Out | In |
| |
| Coil |
Air
Handler
Electric Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
Before plugging in the water heater, always make sure:
MASSACHUSETTS CODE
DOES NOT ALLOW THIS
TYPE OF INSTALLATION.
Typical Mixing Valve Installation Combination
Space Heating/Potable Water Heating System
FIGURE 16
Also see Water System Piping for additional instructions on the safe and correct installation and operation of this water heater.
Solar Installation
If this water heater is used as a solar storage heater or as a backup for the solar system, the water supply temperatures to the water heater tank may be in excess of 120°F. A mixing valve or other temperature limiting valve must be installed in the water supply line to limit the supply temperature to 120°F.
NOTE: Solar water heating systems can often supply water with temperatures exceeding 180°F and may result in water heater malfunction.
•The Voltage and frequency correspond to that specified on the water heater.
•The electrical outlet has the proper overload fuse or breaker protection.
•Unit is to connect to a 120VAC electrical supply outlet (extension cord is not allowed).
IMPORTANT: Do not use an extension cord to connect the water heater to an electrical outlet.
•The water heater and the outlet are properly grounded.
•Installed in accordance with prevailing provisions of local codes, or in the absence of such, National Electric Code, ANSI/NFPS 70 current edition.
Completely fill the tank with water and check all con- nections for leaks. Open the nearest hot water faucet and let it run for three (3) minutes to purge the water lines of air and sediment and to ensure complete filling of the tank. The Electrical power may then be turned on. Verify proper operation after servicing.
Wiring Diagram
Air Intake | Gas Control | |
Valve / Thermostat | ||
Chamber Fan | ||
|
Pressure
Switch 
Igniter/Flame
Sense Connector
FV
Sensor
CAUTION:
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE 
IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING.
Anode
Rod
Control Display
CAUTION:
DO NOT USE AN EXTENSION CORD TO CONNECT THE TRANSFORMER TO AN ELECTRICAL OUTLET.
Power Supply
Transformer
18
