Connecting To Gas Supply - Desa Comfort Glow CGP11 Owner's Operation And Installation Manual

CONNECTING
TO GAS
SUPPLY
A qualified service person must connect heater to gas supply.
Follow all local codes.
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.
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 10. Pointing the vent down protects it from freezing rain or sleet.
Propane
Supply Tank
Figure 10 - External Regulator With Vent Pointing Down
Use only new, black iron or steel pipe. 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.
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 11, page 10).
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.
Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Install sediment trap in supply line as shown in Figure 11. 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.
NOTICE
!
CAUTION
WARNING ICON G 001
!
CAUTION
WARNING ICON G 001
!
CAUTION
WARNING ICON G 001
External
Regulator
Vent Pointing
Down
Continued
9