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105568
OWNER’S MANUAL
Tee Joint
Pipe Nipple
Cap
INSTALLATION
Continued
Figure 11 - Installing Bottom Mounting
Screws
Figure 10 - Mounting Heater Onto Mount-
ing Bracket
Horizontal Slots
Mounting Bracket
(attached to wall)
Stand-Out Tab
Placing Heater On Mounting
Bracket
1.
Locate two horizontal slots on back
panel of heater.
2.
Place heater onto mounting bracket.
Slide horizontal slots onto stand-out tabs
on mounting bracket (see Figure 10).
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.
Continued
CONNECTING TO GAS
SUPPLY
NOTICE: A qualified service per-
son must connect heater to gas
supply. Follow all local codes.
WARNING: Never connect
heater to private (non-utility) gas
well. This gas is commonly known
as wellhead gas.
Typical Inlet Pipe Diameters
FA-20BB,
3/8" or greater
FAS-20BB
FA-30BB,
1/2" or greater
FAS-30BB,
FGH-30NG
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 pipe
could result in clogged heater valves.
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.
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 of large
enough diameter to allow proper
gas volume to heater. If pipe is
too small, undue loss of pres-
sure will occur.
CAUTION: Use pipe joint seal-
ant that is resistant to natural 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.
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 19.
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).
Pressure
Regulator
Test
Gauge
Connection *
3/8" NPT
Pipe Nipple
Sediment
Trap
3" Minimum
Typical Inlet
Pipe from
Gas Meter
(4" W.C. to
10.5" W.C.
Pressure)
Heater
Cabinet
Ground
Joint Union
Tee Joint
Reducer Bushing
to 1/8" NPT
1/8" NPT Plug Tap
Manual Shutoff
Valve *
