Connecting to gas supply, Notice, Caution – Vanguard Managed Solutions VP1000B User Manual
Page 13
13
099406
CONNECTING
TO GAS
SUPPLY
NOTICE
A qualified service person must connect heater to gas supply.
Follow all local codes.
The installer must supply an external regulator. The external regulator will reduce
incoming gas pressure. You must reduce incoming gas pressure 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.
WARNING ICON
G 001
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.
Propane
Supply Tank
Figure 12 - External Regulator With Vent Pointing Down
Vent Pointing
Down
External
Regulator
Install sediment trap in supply line as shown in Figure 13, page 14. 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.
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 13, page 14).
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.
WARNING ICON
G 001
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 3/8" diameter or greater to allow proper gas volume to heater.
If pipe is too small, undue loss of pressure will occur.
WARNING ICON
G 001
CAUTION
Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Continued