VANGUARD VP10T

PROPANE/LP GAS HEATER

CONNECTING TO GAS SUPPLY

NOTICE: A qualified service per- son must connect heater to gas supply. Follow all local codes.

CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator be- tween the heater and propane/LP supply.

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 up- stream from heater (see Figure 13).

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 13. 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.

IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pip- ing and/or fittings.

The installer must supply an external regu- lator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incom- ing gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure

12.Pointing the vent down protects it from freezing rain or sleet.

Propane/

External

LP Supply

Regulator

Tank

 

Vent

Pointing

Down

Figure 12 - External Regulator With Vent Pointing Down

 

3/8" NPT

 

Pipe

Manual

Nipple

Shutoff

 

Valve *

 

From External Regulator (11" W.C. to 14" W.C. Pressure)

3" Minimum

Pressure

Regulator

Heater

Cabinet

Ground Joint

Union

 

 

Tee Joint

 

 

 

 

 

 

 

 

 

 

Reducer

 

Test

 

 

Bushing to

 

 

 

 

Gauge

 

 

1/8" NPT

 

 

 

 

Connection *

 

 

1/8" NPT

 

 

 

 

 

Tee

 

Plug Tap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Joint

 

 

 

 

 

 

 

Pipe

 

Sediment

 

 

 

Trap

 

Nipple

 

 

 

 

 

 

 

 

 

 

Cap

 

 

 

 

 

 

 

CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe 3/8" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur

*An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessory, page 15.

Figure 13 - Gas Connection

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Desa VP10T installation manual Connecting to GAS Supply, Sediment Trap

VP10T specifications

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