This appliance is factory
preset for propane/LP gas.
No changes are required for
connecting to propane/LP.
Only a qualified installer or
service technician can perform
gas selection and connecting to
gas supply.
CAUTION: Two gas line in-
stallations at the same time are
prohibited. The access plate
to the simple switching means
shall not be opened while the
heater is in operation.
CAUTION: To avoid gas
leakage at the inlet of regulator,
a qualified installer or service
technician must use supplied
hex plug with sealant.
WARNING: Do not attempt to
access or change the setting of
the fuel selection means.
Access to and adjustment of the fuel selection
means must only be performed by a qualified
service person when connecting this appliance to
a specified fuel supply at the time of installation.
Change of the selector setting to other than
the fuel type specified at the time of installa-
tion could damage this appliance and render
it inoperable.
The installer shall replace the access cover
before completing the installation and operat-
ing this appliance.
200042-01A
INSTALLATION
GAS SELECTION
For changing from propane to
1. Remove 2 screws from cover plate located
on back of heater to expose fuel selection
device (see Figure 5).
2. For NATURAL GAS, press knob using a
flat screwdriver with a blade with thick-
ness of a quarter and turn knob clockwise
sition (see Figure 5). 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 5). 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.
Hex Plug
Figure 5 - Settings for Natural Gas
www.usaprocom.com
natural gas supply:
until the knob locks into the NG po-
NG
LP
Back of Heater
INLET GAS PRESSURE
MAX 1/2 PSIG (3.5 KPA)
LP
NG
Bottom of Heater
Selection
Fuel
Selector
Knob
Gas
Connection
Fitting
11