Desa CGP10RLA - Manual (Page 9)

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OWNER’S MANUAL
CONNECTING TO GAS
SUPPLY
Figure 12 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
Vent
Pointing
Down
External
Regulator
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
INSTALLATION
Continued
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.
CAUTION: Never connect heater
directly to the propane/LP supply.
This heater requires an external
regulator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: This appliance re-
quires a 3/8" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.
Figure 13 - Gas Connection
* A CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional CSA/AGA design-certified
equipment shutoff valve from your dealer. See Accessory, page 16.
Tee Joint
Pipe Nipple
Cap
Heater
Cabinet
Pressure
Regulator
3/8" NPT
Pipe Nipple
Ground Joint Union
From External
Regulator
(11" W.C. to
14" W.C.
Pressure)
Equipment
Shutoff
Valve *
Sediment
Trap
Test
Gauge
Connection *
3" Minimum
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 piping
and/or fittings.
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.
Installation must include an equipment 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).
IMPORTANT: Install an equipment shutoff
valve in an accessible location. The equip-
ment shutoff valve is for turning on or
shutting off the gas to the appliance.
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 pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Continued