8
INSTALLATION
Connecting To Permanent Gas Supply (Cont.) Checking Gas Connections For Permanent Gas Supply
INSTALLATION
Continued
CONNECTING TO PERMANENT GAS SUPPLY | CHECKING GAS CONNECTIONS FOR |
(CONTINUED) | PERMANENT GAS SUPPLY |
Install sediment trap in supply line as shown in Figure 13. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.
IMPORTANT: Hold the pressure regulator with wrench when connecting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.
3/8" NPT | Pressure | ||
Regulator | |||
Pipe Nipple** |
|
| |
Ground | Heater | ||
Joint | Cabinet | ||
Union | Tee Joint |
| |
Equipment Shutoff |
| ||
Reducer |
| ||
Valve * | Test | ||
Bushing to | |||
| |||
From External | 1/8" NPT | Gauge | |
Regulator | 1/8" NPT | Connection* | |
(11" W.C. to | Plug Tap |
| |
14" W.C. | Tee Joint |
| |
Pressure) | Sediment | ||
3" Minimum | Pipe Nipple | ||
| Cap | Trap | |
|
| ||
Figure 13 - Gas Connection |
|
| |
*A CSA
**The 90º elbow on the regulator is removed and the 3/8" NPT pipe nipple is installed in its place.
WARNING: Test all gas piping 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 noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.
CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guidelines under Connecting to Permanent Gas Sup- ply, pages 7 and 8.
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 (con- trol valve) and equipment shutoff valve from gas supply pip- ing system. Pressures in excess 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 opening propane/LP supply tank valve or using compressed air.
4.Check all joints of gas supply piping system. Apply a noncor- rosive leak detection fluid 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 14).
2.Pressurize supply piping system by either opening propane/LP supply tank valve or using compressed air.
Open
Equipment
Shutoff
Valve
Closed
Figure 14 - Equipment Shutoff Valve
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