User Guide

Page 3
IV. WIRING
CAUTION: Disconnect electrical power when wiring power venter
Wire the draft inducer 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. Route the draft inducer motor and control wiring with an appropriate
wiring method. Refer to Wiring Diagram A.
Refer to the draft inducer installation instructions for setting system airflow to the maximum setting.
V. SYSTEM CONTROL CHECK OUT PROCEDURES
G
AS PRESSURE SWITCH FOR WATER HEATER
1. Follow water heater manufacturer's instructions to light pilot. Turn the gas control valve to the ON position. Then
adjust the thermostat to call for heat, which will energize the venter motor. (May see a 1 to 8 sec. delay of venter
motor)
2. Turn gas control valve to the PILOT position, which will start a 1 to 3 min. post purge of the venter motor.
3. Repeat Step 1 and 2 to ensure proper operation.
S
PILLAGE SWITCHES
1. Allow the water heater to heat up to operating temperature, then disconnect the power to the gas pressure switch.
2. Adjust the thermostat to call for heat with the venter inoperative. Allow approximately 2 minutes of flue gas spillage for
the spillage switches to sense the spillage and disrupt the thermocouple circuit, halting the gas flow to the pilot and
burner.
3. Wait 2 to 3 minutes. Reset the spillage switches and light the pilot, then perform a second safety spillage test (Steps 1
and 2).
CAUTION: If for any reason the system has shut down during operation, the cause of the system failure should be
investigated and corrected before resetting the safety switch and restarting the system.
Diagram A