Connecting To Gas Supply - Desa Comfort Glow CGN12A Owner's Operation And Installation Manual

CONNECTING
TO GAS
SUPPLY
100847
A qualified service person must connect heater to gas supply.
Follow all local codes.
Never connect heater to private (non-utility) gas wells. This gas is
commonly known as well-head gas.
Check gas line pressure before connecting heater to gas line. Gas line
IMPORTANT:
pressure must be no greater than 14 inches of water. If gas line pressure is higher,
heater regulator damage could occur.
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.
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, 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.
Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Install sediment trap in supply line as shown in Figure 12, 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.
NOTICE
WARNING
WARNING ICON G 001
CAUTION
WARNING ICON G 001
CAUTION
WARNING ICON G 001
Continued
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