VANGUARD VN10T
NATURAL GAS HEATER
CONNECTING TO GAS SUPPLY
IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/ or fittings.
NOTICE: A qualified service per- son must connect heater to gas supply. Follow all local codes.
WARNING: Never connect heater to private
IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.
CAUTION: Use only new, black iron or steel pipe. Inter-
3/8" NPT Pipe Nipple
Manual
Shutoff
Valve *
From
Gas Meter (4" W.C. to 10.5" W.C. Pressure)
3" Minimum
Pressure
Regulator
Heater
Cabinet
Ground Joint
Union
Tee Joint |
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Reducer |
| Test | ||
Bushing to |
| Gauge | ||
1/8" NPT |
| Connection * | ||
1/8" NPT |
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Plug Tap |
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Tee |
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Joint |
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Pipe |
| Sediment | |
| Trap | ||
Nipple |
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Cap |
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pressure will occur
Installation must include a manual shutoff valve, ground joint union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 12).
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.
CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.
Install sediment trap in supply line as shown in Figure 12. Locate sediment trap where it is within reach for cleaning. Locate sedi- ment 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.
*An A.G.A.
Figure 12 - Gas Connection
8 | 102490 |
