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www.usaprocom.com
200000-01B14
INSTALLATION
For changing from natural gas supply to propane supply:
1. Remove top screw from cover plate lo-
cated on back of heater (see Figure 13).
Rotate to expose fuel selection device.
2. For propane gas, press in knob using a at
screwdriver with a blade the thickness of
a quarter and turn knob counterclockwise
until the knob locks into the LP posi-
tion (see Figure 13). Fuel selection device
must be locked in the LP position. Do not
operate heater between locked positions.
3. Rotate and close cover over fuel selection
device and reinstall screw.
4. Remove hex plug (with wrench provided)
from propane/LP gas inlet of regulator
(see Figure 13). Install hex plug into
NG inlet of regulator. Install gas line into
propane/LP inlet of regulator. Use thread
sealant to ensure that there are no leaks.
NG
LP
INLET GAS PRESSURE
MAX 1/2 PSIG (3.5 KPA)
Bottom of Heater
Back of Heater
NG
LP
Fuel
Selector
Knob
Hex Plug
Figure 13 - Settings for Propane/LP Gas
Selection
Gas
Connection
Fitting
1. Remove top screw from cover plate lo-
cated on back of heater (see Figure 12).
Rotate to expose fuel selection device.
2. For NATURAL GAS, press knob using a
at screwdriver with a blade with thick-
ness of a quarter and turn knob clockwise
until the knob locks into the NG
position (see Figure 12). Fuel selection
device must be locked in the NG position.
Do not operate heater between locked
positions!
3. Rotate and close cover over fuel selection
device and reinstall screw.
4. Remove hex plug (with wrench provided)
from natural gas inlet of regulator (see
Figure 12). Install hex plug into LP inlet
of regulator. Install gas line into NG inlet
of regulator. Use thread sealant to ensure
that there are no leaks.
NG
LP
INLET GAS PRESSURE
MAX 1/2 PSIG (3.5 KPA)
Bottom of Heater
Back of Heater
NG
LP
Fuel
Selector
Knob
Hex Plug
Gas
Connection
Fitting
Figure 12 - Settings for Natural Gas
Selection
For changing from propane to natural gas supply:
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