Procom GHBVN50 Manual page 13

3. Install the wall thermostat using screws included with your heater and screw into a wall stud. If unable to screw into a wall
stud, screw anchors should be used.
Do not allow wires to touch each other or parts of thermostat .Wires must be routed through the hole in the back plate, below
the terminal block.
4. For heating and cooling operation of the garage heater wall thermostat, please read the manual.
WIRE LABEL SYMBOL DEFINITION:
R : HEAT/COOLING TRANSFORMER
W : HEATING CONTROL
G : FAN RELAY
CONNECTING TO GAS SUPPLY
WARNING: A qualified technician must connect heater to gas supply. Follow all local codes.
CAUTION: Never connect heater directly to the gas supply. This heater requires an external regulator (not supplied). The
external regulator between the gas supply and heater must be installed. Gas supplier provides external regulator for natural gas.
INSTALLATION ITEMS NEEDED
Before installing heater, make sure you have the items listed below.
• piping (check local codes) sealant
• (resistant to propane/LP gas)
• equipment shutoff valve*
• test gauge connection**
• sediment trap
• tee joint
• pipe wrench
• flexible gas hose (check local code)
A CSA design-certified equipment shutoff valve with 1/8 in. NPT tap is an acceptable alternative to test gauge connection.
Purchase the optional CSA design certified equipment shutoff valve from your dealer.
WARNING: Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.
The installer must supply an external regulator for liquid propane. The external regulator is provided by the gas supplier for
natural gas. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11
and 14 inches of water column for propane and between 5 and 10.5 inches of water column for natural gas. If you do not reduce
incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in
Fig. 10. Pointing the vent down protects it from freezing rain or sleet.
Fig 10 - External Regulator With Vent Pointing Down
External
Regulator
Propane/LP
Supply Tank
Vent Pointing Down
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