Desa FGHS30LPB - Manual (Page 10)

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BLUE FLAME PROPANE/LP GAS HEATER
Install sediment trap in supply line as shown
in Figure 14. 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 pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Figure 14 - Gas Connection
* An CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional CSA design-certified equipment
shutoff valve from your dealer. See Accessories, page 20.
Tee Joint
Pipe Nipple
Cap
Pressure
Regulator
Test
Gauge
3/8" NPT
Pipe Nipple
Sediment
Trap
3" Minimum
From External
Regulator
(11" W.C. to
14" W.C.
Pressure)
Heater
Cabinet
Ground Joint
Union
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Equipment Shutoff
Valve *
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service
person must connect heater to
gas supply. Follow all local codes.
WARNING: Never connect
heater directly to the propane/
LP supply. This heater requires
an external regulator (not sup-
plied). Install the external regu-
lator between the heater and
propane/LP supply.
Typical Inlet Pipe Diameters
FGHS30LPB 1/2" or greater
Installation must include an equipment
shutoff valve, 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 14).
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 of large
enough diameter to allow proper
gas volume to heater. If pipe is
too small, undue loss of pres-
sure will occur.
The installer must supply an external regu-
lator. The external regulator will reduce
incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14
inches of water. If you do not reduce incom-
ing gas pressure, heater regulator damage
could occur. Install the external regulator
with the vent pointing down as shown in
Figure 13. Pointing the vent down, protects
it from freezing rain or sleet.
Figure 13- External Regulator with Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent Pointing Down
INSTALLATION
Continued
WARNING: This appliance re-
quires a 3/8" NPT (National Pipe
Thread) inlet connection to the
pressure regulator.
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.