Connecting To Gas Supply - Desa Comfort Glow CGP10TLA Owner's Operation And Installation Manual

OWNER'S MANUAL
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
NOTICE: A qualified service per-
son must connect heater to gas
supply. Follow all local codes.
_k 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/I.P
supply.
The installer must supply an external regu-
lator. 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 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.
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).
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 plpejolnt seel-
ant that Is resistant to liquid pe-
troleum (LP) gas.
3/8" NP
Ground Joint Union
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.
Pressure
Regulator
• Heater
Cabinet
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.
propane/
LP Supply
Tank
Extemal
Regulator
Reducer Test
to
FromExternal 1/8' NPT Connection *
( 1/8" NPT
Pressure) Tap
3' Minimum- J°siet 1
Pipe I-Sediment Trap
Nipple|
CapJ
Figure 13 - Gas Connection
* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an ecceptabl¢
alternative to testgaugeconnection. P urchasetheoptionalA.G.A. design-certified manual
shutoff valve from your dealer. See Accessory, page 13.
Vent
Pointing
Down
Figure 12 - External Regulator With Vent
Pointing Down
Continued
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