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WIRING INSTRUCTIONS
CAUTION: DISCONNECT ELECTRICAL POWER WHEN WIRING POWER VENTER
Wire the venter motor and controls in accordance with the National Electrical Code, manufacturer's
recommendations and/or applicable local codes.
UNITS MUST BE GROUNDED.
Check ground
circuit to make certain that the unit has been properly grounded. The wiring should be protected by an
overcurrent circuit device rated at 15 amperes.
CAUTION
must be taken to ensure that the wiring
does not come into contact with any heat source. All line voltage and safety control circuits, between
the venter and the appliance,
MUST
be wired in accordance with the National Electrical Code for
class one wiring or equivalent methods.
The wire connections which must be made on a Sidewall Fan can be divided into two categories;
Power Connections and Control Voltage.
P
OWER
C
ONNECTIONS
The Power Connections bring 120 volts into the fan control box from a designated power source and
then sends the same 120 volts out to the fan motor.
Step 1
Connect the black, white and green ground wires to a 120 volt designated power
source.
Step2
Connect the black, white and green ground wires to the sidewall fan.
C
ONTROL
V
OLTAGE
The Control Voltage brings 120 volts and 24 volts from the boiler to start the fan and make a proving
switch, respectively.
Step 1
Locate an access panel below the gas train on the left side of the boiler.
Remove the access panel and expose the terminal strip and the 2-pin molex plug
(brown and white wires). Connect the black and white wire from the fan control
box to the 2-pin molex plug.
Step 2
Connect the orange and blue wire from the fan control box to the 'B' and 'X' on
the terminal strip. Remove the jumper between the 'B' and 'X'. If there is no
jumper between the 'B' and 'X' and the flow switch has already been installed,
then the orange and blue wire must be tied in series with the flow switch.
