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Figure 51: Gas Control Valve and Optional Thermostat Wiring.
Initial Installation
QUALIFIED INSTALLERS ONLY
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The
ENVIRO
WESTPORT will operate without electrical power. This model has a millivolt gas control,
which uses the pilot flame to generate enough electricity to operate the main burners. The appliance
when equipped with an optional blower must be electrically connected and grounded in accordance with
local codes or in the absence of local codes, with the current CSA C22.1 CANADIAN ELECTRICAL CODE
Part 1, SAFETY STANDARDS FOR ELECTRICAL INSTALLATIONS, OR THE NATIONAL ELECTRICAL CODE
ANSI / NFPA 70 in the U.S.
Fan
White
Black
Fan
temperature
sensor
White
Black
Fan
controller
Power
Supply
Figure 52. Wiring Diagram For Fan Control.
Table 8. Recommended Thermostat
Wire Size.
Wire Size
Max. Length
14 gauge
100 ft (30.48 m)
16 gauge
60 ft (18.29 m)
18 gauge
40 ft (12.00 m)
20 gauge
25 ft (7.62 m)
22 gauge
18 ft (5.49 m)
COOL / HEAT
PROGRAM
DOWN
UP
70 ° F
70 ° F
ON
OF
F
Optional
Remote
Control
ON/OFF/Remote
Thermostat Switch
Purple
Thermocouple
Blue
Thermopile
Grey
Inlet
Pressure
Tap
Gas Control
Valve
Manifold
Pressure Tap
Pilot Adjustment
Screw
Optional
Wall Switch
Optional
Thermostat
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper operation after servicing.
WARNING:
Electrical grounding instructions. This appliance is equipped with a three-prong (grounding)
plug for your protection against shock hazard, and must be plugged directly into a properly grounded
three-prong outlet.
DO NOT cut or remove the grounding prong from this plug.
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