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115254-01C
14
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" of water. If you do not re
-
duce incoming gas pressure, heater regulator
damage could occur. Install external regulator
with the vent pointing down as shown in Figure
12. Pointing the vent down protects it from
freezing rain or sleet.
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 heater (see
Figure 13 or 14, depending on your model).
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.
External
Regulator
with Vent
Pointing
Down
Propane/LP
Supply Tank
Figure 12 - External Regulator with Vent
Pointing Down
Tee Cap Pipe
Joint
Nipple
Figure 14 - Attaching Flexible Gas Line
to Control Valve (Remote-Ready Models)
* Purchase the optional equipment shutoff
valve from your dealer.
**Minimum inlet pressure for purpose of input
adjustment
Approved
Flexible
Gas Hose (if
allowed by
local codes)
Pipe
Cap Tee
Nipple
Joint
3" Minimum
Sediment Trap
Propane/LP
-
From External
Regulator
(11" W.C.** to 14"
W.C. Pressure)
Natural
- From
Gas Meter (5"
W.C.** to 10.5"
W.C. Pressure)
Gas Control
Equipment Shutoff Valve
with 1/8" NPT Tap*
Figure 13 - Attaching Flexible Gas Line to
Control Valve (Manually-Controlled Models)
Propane/LP
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
Natural
From Gas
Meter (5"
W.C.** to
10.5" W.C.
Pressure)
Equipment Shutoff Valve
with 1/8" NPT Tap*
Approved
Flexible
Gas Hose (if
allowed by
local codes)
3" Minimum
Sediment Trap
Gas
Regulator
We recommend that you install a sediment
trap in supply line as shown in Figures 13
and 14, depending on your model. Locate
sediment trap 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 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.
