Vanguard Heating VS18PR, VS24PR Connecting To Gas Supply, Installation Items Needed, Installing

INSTALLING

Continued

14

CONNECTING TO GAS SUPPLY

NOTICE

A qualified service person must connect heater to gas supply. Follow all local codes.

CAUTION

Never connect heater directly to the propane supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane supply.

Installation Items Needed

Before installing heater, make sure you have the items listed below.

• external regulator (supplied by installer, see	• test gauge connection *
Figure 12)	• sediment trap
• piping (check local codes)	• tee joint
• sealant (resistant to LP gas)	• pipe wrench

•manual shutoff valve *

*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 Accessories, page 30.

The installer must supply an external regulator. 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 incoming 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

Supply Tank

External

Regulator

Vent Pointing

Down

Figure 12 - External Regulator With Vent Pointing Down

WARNING

Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

CAUTION

Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

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