User manual FIELD CONTROLS 46161700

[. . . ] Manual operation controls to gas valve must be rendered inoperative. ITEMS INCLUDED IN KIT: 1) Junction box with mounted pressure switch 1) 1 ft. length of 1/8 inch aluminum tubing 1) 1/8" tubing connector 1) 1/8" tubing to 1/8" NPT elbow 1) Flexible conduit connector 1) Mounted 115 VAC/24 VAC transformer 1) Mounted post-purge timer (non-adjustable) DO NOT DESTROY THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT MOUNTING JUNCTION BOX The junction box can be mounted at the venter or remotely mounted away from the venter. Remove one of the knockouts from the side of the junction box where the pressure switch is mounted. Install the flexible conduit connector onto the CK-81 junction box and secure with fastening nut. [. . . ] The relay closes and the power venter energizes. After motor is up to speed, the pressure switch closes and the gas valve energizes. When the thermostat is satisfied, the thermostat opens and stops the gas valve operation. The postpurge timer in the CK-81 will cause operation of the venter motor for an additional period of approximately one to three minutes. Table 1 WIRE LENGTH FOR 750 MILLIVOLT WIRING Max. Combined Wire Length Length Sizes (2-wire (2 single cable) wires) No. Figure 3 Figure 2 Figure 1 *Floor furnace application must use a gsk-3 spillage sensing switch. **(Optional connections), connect to millivolt thermostat connections on heating equipment. Page 2 Figure 4 PRESSURE SWITCH SENSING TUBE INSTALLATION 1. Attach the 1/4 inch tubing connector to the pressure tube on the SWG Venter. Connect the supplied 1/4" aluminum tubing to the tubing connector. Route the tubing to the CK-81 junction box and connect the tubing to the pressure switch. When routing the tubing, avoid kinking the tubing by bending the tubing too sharply. NOTE: For remote mounted CK-81 Junction Box, use 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. PRESSURE SWITCH ADJUSTMENTS With the venter airflow 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 5) SYSTEM CONTROL CHECK OUT PROCEDURES 1. Adjust the thermostat to call for heat and observe the power venting system for proper operating sequence. [. . . ] Check for negative pressure in building. Motor: Inspect motor once a year, the motor should rotate freely. Wheel: Inspect venter wheel annually to clear any soot, ash or coating which inhibits either rotation or air flow. Remove all foreign material before operating. [. . . ]