TM
Installation & Service Manual
7Gas connections
Connecting gas supply piping
1. Install ground joint union for servicing, when |
required. |
4.Support piping with hangers, not by the water heater or its accessories.
2. On Models |
shutoff valve in the gas supply piping outside water heater |
jacket when required by local codes or utility |
requirements. |
3. In Canada – When using manual main shutoff |
valves, it must be identified by the installer. |
WARNING
The gas valve and blower will not support the weight of the piping. Do not attempt to support the weight of the piping with the water heater or its accessories. Failure to comply could result in severe personal injury, death, or substantial property damage.
Figure
5. | Purge all air from the gas supply piping. |
6. | Before placing the water heater in operation, check the |
| water heater and its gas connection for leaks. |
| a. The appliance must be disconnected from the gas |
| supply piping system during any pressure testing of |
GAS SUPPLY
DRIP LEG
UNION
MANUAL GAS SHUT OFF VALVE (FIELD SUPPLIED)
| that system at a test pressure in excess of 1/2 PSIG |
| (3.5 kPa). |
b. | The appliance must be isolated from the gas supply |
| piping system by closing a manual shutoff valve |
| during any pressure testing of the gas supply piping |
| system at test pressures equal to or less than 1/2 PSIG |
| (3.5 kPa). |
c. | The appliance and its gas connection must be leak |
| tested before placing it in operation. |
WARNING Do not check for gas leaks with an open flame – use the bubble test. Failure to use
the bubble test or check for gas leaks can cause severe personal injury, death, or substantial property damage.
Figure
MANUAL GAS
SHUTOFF VALVE
(FACTORY SUPPLIED ON MODELS
7.Use pipe sealing compound compatible with propane gases. Apply sparingly only to male threads of the pipe joints so that pipe dope does not block gas flow.
GAS SUPPLY
DRIP LEG
UNION
35 
