User manual FIELD CONTROLS 46298500

[. . . ] 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-51 junction box and secure with fastening nut. If remote mounting the CK-51 junction box, mount the flexible conduit connector onto a 2" x 4" installer supplied junction box. [. . . ] The wiring should be protected by an over current 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 I wiring or equivalent methods. NOTE: Route low voltage wiring through the supplied plastic grommet. You must provide all wiring of the proper size outside of the water heater. You must obey local codes and electric utility requirements when you intall this wiring. This water heater must be electrically `grounded" by the installer. Using a screw on the water heater junction box, a wire must be run to connect the water heater to an uninterrupted metallic ground. This appliance must be electrically grounded in accordance with local codes or, in the absence of local codes, with the latest edition of the National Electrical Code ANSI/NFPA No. NOTE: If any of the original wire as supplied with the water heater must be replaced, it must be replaced with 105°C thermoplastic AWM wire or its equivalent. Models: F75-120, F75-140, F30-150, F80-180, F30-199, F80-199, F100-199ES, F100-199ET, F30-225, F75-250, F100260ES, F100-260ET, F75-300, F70-360 NATURAL AND PROPANE (L. P. ) MODELS CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Diagram A Page 3 Diagram B Page 4 Diagram C Page 5 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. [. . . ] 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. [. . . ]