User manual FIELD CONTROLS 01977100

[. . . ] Connect installer supplied 1/4" O. D. aluminum, copper or stainless steel tubing to the tubing connector. Route the tubing to the CK control box and connect the tubing to the pressure switch using supplied plastic nut. When routing the tubing, avoid kinking the tubing by bending the tubing too sharply. [. . . ] The gas pressure switch is supplied with a restrictor orifice in the inlet and outlet ports. With these orifices in place, the switch does not need to be vented. This feature complies with current ANSI standards for gas regulators. 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. DRAFT HOOD SAFETY SWITCH INSTALLATION PROCEDURE NOTE: 12 ga. wire should be used when wiring safety spillage switches, to reduce the voltage drop in the thermocouple circuit. Remove the thermocouple from the gas control valve. Thread the junction block into the thermocouple port and thermocouple into the bottom of the junction block. (See Figure 8) Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Page 3 NOTE: Draft spillage switches should be mounted 90 degrees apart, and mounted opposite from the vent outlet direction. Mount the two spillage switches onto the draft hood and connect inside terminals of switches with jumper wire. Connect outside terminals to 6' 12ga lead wires which are connected to the thermocouple junction block. Adjust the thermostat and/or aquastat to call for heat and observe the power venting system for proper operation sequence. After a short delay, the relay is energized, the venter motor starts and the vent damper begins opening. Pressure switch closes, the vent damper reaches the open position and the burner starts. Aquastat is satisfied, the burner stops and the vent damper begins closing. While system is operating, disconnect power to the venter motor. This should open the pressure switch contacts and stop burner operation. 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. Turn gas control valve to the PILOT position, which will start a 1 to 3 min. Repeat Step 1 and 2 to ensure proper operation. [. . . ] If there is 24 volts continuously for at least 45 second, there should be 115 volts from N to M. If not, the time relay is defective, or L1 and N are not properly wired. Check gas pressure switch for continuity across terminals when water heater burner is lit. Adjust power venter's airflow adjustment damper if necessary. [. . . ]