Field Controls 46149200, Инструкция по эксплуатации

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Page 9
PRESSURE SWITCH SENSING TUBE INSTALLATION
1. Attach the 1/4 inch tubing connector to the pressure tube on the SWG Venter. (See Figure 3)
2. Connect the supplied 1/4" aluminum tubing to the tubing connector. Route the tubing to the CK-62 Junction Box and
connect the tubing to the pressure switch. When routing the tubing avoid kinking the tubing by bending the tubing too
sharply.
For remote mounted CK-62 Junction Box, use a 1/4" OD copper, aluminum or plastic tubing and route the tubing to avoid
contact with any heat source.
Refer to the SWG Venter installation instructions for setting system airflow.
P
RESSURE
S
WITCH
A
DJUSTMENTS
With the venter air flow set and the appliance operating at the best operating efficiency, adjust the pressure switch by rotating
the adjustment screw clockwise until the burner shuts off, then rotate the adjustment screw counterclockwise until the burner
fires. Rotate the adjustment screw an additional 1/4 turn counterclockwise to ensure proper switch setting. (See Figure 8)
SYSTEM CONTROL CHECK OUT PROCEDURES
1. Adjust the thermostat to call for heat and observe the power venting system for proper operation sequence (Repeat if
necessary).
a. Thermostat calls for heat.
b. Relay is energized and venter motor starts.
c. Pressure switch closes and burner starts.
d. Thermostat is satisfied, burner stops and venter motor should operate for approximately 3 to 5 minutes.
2. While system is operating, disconnect power to the venter motor. This should open the pressure switch contacts and stop
burner operation.
3. (If WMO-1 switch is installed) Allow vent system to cool. Disconnect the vent pipe between the venter inlet and the
appliance outlet. Block the vent pipe with a noncombustible material. Activate the heating system with the main burner
operating. Allow approximately 2 minutes or less for the secondary safety switch to deactivate the burner. Reset safety
switch and repeat.
Figure 8