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INSTALLATION
Continued
CHECKING GAS CONNECTIONS
WARNING:Testallgaspiping and connections , internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for a leak. Apply a commercial leak de- tection solution to all joints. Bubbles forming show a leak. Correct all leaks at once.
CAUTION: For propane/LP units, make sure external regula- tor has been installed between propane/LP supply and heater. SeeguidelinesunderConnecting to Gas Supply, page 13.
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1.Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping. Pressures in ex- cess of 1/2 psig will damage heater regulator.
2.Cap off open end of gas pipe where equipment shutoff valve was connected.
3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
4.Check all joints of gas supply piping system. Apply a commercial leak detection solution to all joints. Bubbles forming show a leak.
5.Correct all leaks at once.
6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1.Close equipment shutoff valve (see Figure 15).
2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
3.Check all joints from gas meter (natural gas) or propane/LP supply to equipment shutoff valve (see Figure 16 or 17). Apply a commercial leak detection solution to all joints. Bubbles forming show a leak.
4.Correct all leaks at once.
Equipment | Open |
Shutoff Valve |
|
| Closed |
Figure 15 - Equipment Shutoff Valve | |
Propane/LP | Equipment Shutoff Valve |
Supply Tank |
|
Control Valve |
Location |
Figure 16 - Checking Gas Joints (Propane/LP Gas Only)
Equipment Shutoff Valve
Gas |
Meter |
Control Valve Location |
Figure 17 - Checking Gas Joints
(Natural Gas Only)
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