Installation
Continued
IMPORTANT: Install an equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.
WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Pressure |
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Regulator |
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| 3/8" NPT | ||
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Regulator |
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| Pipe | ||
Bracket |
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| Nipple | ||
Heater |
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| Ground | ||
Cabinet |
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| Joint | ||
Connection* |
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| Union | |
Tee Joint |
| Equipment | |||
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| Reducer |
| Shutoff | ||
| Bushing to |
| Valve* | ||
Gauge | 1/8" NPT |
| Natural Gas | ||
Plug Tap | Min. | ||||
Meter (7" W.C. | |||||
Test | 1/8" NPT | 3" | From Gas | ||
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| to 10.5" W.C. | ||
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| Tee | Pipe | Cap | Pressure) | |
| Propane/LP | ||||
| Joint | Nipple |
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| Sediment Trap | From External | |||
| Regulator | ||||
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| (11" W.C. to 14" | |
| Refer to connector's | W.C. Pressure) | |||
| instructions |
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| Flexline |
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| See | |
3/8" NPT/ 1/2" | illustration | |
above for | ||
Flare 90° Elbow | ||
detail | ||
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Connection Using Flexline | ||
Figure 15 - Gas Connection
*A CSA
sories, page 21.
Install sediment trap in supply line as shown in Figure 15. 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 pip- ing and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.
CHECKING GAS CONNECTIONS
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 toalljoints.Bubblesformingshow a leak. Correct all leaks at once.
CAUTION: For propane/LP gas, make sure external regula- tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 11.
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 equip- ment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.
2.Cap off open end of gas pipe where equip- ment 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.
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