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200031-01B
16
INSTALLATION
Figure 14 - Gas Connection
* Purchase the optional CSA design-certified equipment
shutoff valve from your dealer.
CAUTION: For natural gas,
check your gas line pressure
before connecting heater to gas
line. Gas line pressure must be
no greater than 10.5" of water. If
gas line pressure is higher, heater
regulator damage could occur.
CAUTION: Avoid damage to
regulator. Hold gas regulator
with wrench when connecting
into gas piping and/or fittings.
CAUTION: Use pipe joint
sealant that is resistant to gas
(Propane/LP or Natural Gas).
Before installing heater, make sure you have
the items listed below:
• external regulator for propane/LP unit only
(supplied by installer)
• piping (check local codes)
• sealant (resistant to natural gas and pro-
pane/LP gas)
• equipment shutoff valve*
• test gauge connection*
• sediment trap
• tee joint
• pipe wrench
• flexible gas hose (check local codes)
* A CSA design-certified equipment shutoff
Figure 15 - External Regulator
with Vent Pointing Down
External
Regulator with
Vent Pointing
Down
Propane/LP
Supply Tank
Equipment
Shutoff Valve
Ground
Joint Union
3/8" NPT
Pipe Nipple
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test Gauge
Connection*
Sediment
Trap
Tee Joint
Pipe Nipple
Gap
3" Miniumum
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design certified equipment
shutoff valve from your dealer.
Typical Inlet Pipe Diameters
Use 3/8" black iron pipe or greater. 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 14).
IMPORTANT:
Install an equipment shutoff
valve in an accessible location. The equip-
ment 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.
For propane/LP gas, 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 reduce incoming gas
pressure, heater regulator damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 15. Pointing the vent
down protects it from freezing rain or sleet.
Install sediment trap in supply line as shown
in Figure 14. Place sediment trap where it is
within reach for cleaning. Place sediment trap
where trapped matter is not likely to freeze.
A sediment trap traps moisture and contami-
nants. This keeps them from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.
Natural Gas
From Gas
Meter (4" W.C.
to 10.5" W.C.
Pressure)
Propane/LP
From External
Regulator (11" W.C.
to 14" W.C. Pressure)
