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126891-01A
7
INSTALLATION
Continued
For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11 and 14 inches of water column.
If you do not reduce incoming gas pressure,
heater regulator damage could occur. Install
external regulator with the vent pointing down
as shown in Figure 3. Pointing the vent down
protects it from freezing rain or sleet.
WARNING: Connecting
directly to an unregulated pro-
pane/LP tank may cause an
explosion.
The appliance gas inlet connection is 3/8"
NPT at the regulator, located at the rear of
the appliance.
IMPORTANT:
Hold appliance regulator with a
wrench to prevent movement when connect
-
ing to inlet piping.
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
volume will occur.
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 log set (see
Figure 4).
Propane/LP
Supply Tank
External
Regulator
Figure 4 - Gas Connection
* Purchase the optional shutoff valve from
your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Vent
Pointing
Down
Approved Flexible
Gas Hose (If
allowed by local
codes)
Equipment Shutoff Valve
with 1/8" NPT Tap*
Natural
From Gas
Meter (5" W.C.**
to 10.5" W.C.
Pressure)
Propane/LP
From External
Regulator (11"
W.C.** to 14"
W.C. Pressure)
3" Minimum
Pipe Cap Tee
Nipple
Joint
Figure 3 - External Regulator with Vent
Pointing Down
IMPORTANT:
Install equipment shutoff valve in
an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Install a sediment trap (not supplied with log
set) where it is within reach for cleaning. Install
in piping system between fuel supply and
heater. Locate sediment trap where trapped
matter is not likely to freeze. A sediment trap
captures 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.
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