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INSTALLATION
CONNECTING TO GAS SUPPLY
WARNING: A qualified
service person must connect
heater to gas supply. Follow all
local codes.
WARNING: This appliance
"
requires a 3/8
NPT (National
Pipe Thread) inlet connection
to the pressure regulator.
WARNING: Never con-
nect heater private (non-utility)
gas well. This gas is commonly
known as well-head gas.
IMPORTANT: Check your gas
line pressure before connecting
heater to gas line. Gas line pres-
sure must be no greater than 10.5
inches of water. If gas line pressure
is higher, heater regulator damage
could occur.
CAUTION: Use only new,
black iron or steel pipe. Internally-
tinned copper tubing may be used
in certain areas. Check your local
codes. Use pipe of large enough
diameter to allow proper gas vol-
ume to heater. If pipe is too small,
undue loss of pressure will occur.
Typical Inlet Pipe Diameters
All models up to 20,000 BTU's use
3/8'' or greater pipe;
All models 25,000 BTU's and higher,
use 1/2" or greater pipe.
Installation must include an equip-
ment
shutoff
valve,
"
plugged 1/8
NPT tap. Locate NPT
tap within reach for test gauge
hook up. NPT tap must be
stream from heater (see Figure 12).
Figure 12 -Gas Connection
*A CSA/AGA design-certified equipment shutoff valve with 1/8
tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA/AGA design-certified equipment shutoff valve from
your dealer. See Accessories, page 17.
IMPORTANT: Install an equip-
ment shutoff valve in an acces-
sible location. The equipment 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.
union, and
joint sealant that is resistant to
natural gas.
up-
CAUTION:
Use
pipe
9
Install sediment trap in supply line
as shown in Figure 12. Locate
sediment trap where it is within
reach for cleaning. Locate sediment
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
regulator
with
wrench
connecting it to gas piping and/or
fittings.
"
NPT
pressure
when
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