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105735
OWNER’S MANUAL
INSTALLATION
Continued
Figure 11 - Installing Bottom Mounting
Screws
Continued
CONNECTING TO GAS
SUPPLY
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
IMPORTANT:
Check gas line pressure be-
fore connecting heater to gas line. Gas line
pressure must be no greater than 14 inches
of water. If gas line pressure is higher,
heater regulator damage could occur.
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 1/2"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
Install sediment trap in supply line as shown
in Figure 12. 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.
Installation must include a manual 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 12).
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in the
pipe could result in clogged heater valves.
Typical Inlet Pipe Diameters
20,000 Btu/Hr models 3/8" or greater
30,000 Btu/Hr models 1/2" or greater
Installing Bottom Mounting
Screws
1.
Locate two bottom mounting holes.
These holes are near bottom on back
panel of heater (see Figure 11).
2.
Mark screw locations on wall.
3.
Remove heater from mounting bracket.
4.
If installing bottom mounting screws
into hollow or solid wall, install wall
anchors. Follow steps 1 through 4 un-
der Attaching to Wall Anchor Method,
page 8.
If installing bottom mounting screw
into wall stud, drill holes at marked lo-
cations using 9/64" drill bit.
5.
Replace heater onto mounting bracket.
6.
Place spacers between bottom mount-
ing holes and wall anchor or drilled hole.
7.
Hold spacer in place with one hand.
With other hand, insert mounting screw
through bottom mounting hole and
spacer. Place tip of screw in opening
of wall anchor or drilled hole.
8.
Tighten both screws until heater is firmly
secured to wall. Do not over tighten.
Note:
Do not replace front panel at this
time. Replace front panel after making
gas connections and checking for leaks
(see page 10).
Figure 12 - Gas Connection
* An A.G.A. design certified manual shutoff valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual
shutoff valve from your dealer. See Accessories, page 17.
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Pressure
Regulator
Test
Gauge
Connection *
Sediment
Trap
Tee Joint
Pipe Nipple
Cap
Heater
Cabinet
3/8" NPT
Pipe Nipple
Note: Burner
bracket not shown
for clarity
Manual Shutoff
Valve *
Typical Inlet Pipe
From Gas Meter
(5" W.C. to 10.5"
W.C. Pressure)
Ground Joint Union
3" Minimum
