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When this model is converted in the field to 3-phase, control hookup should be provided by a CEK-TB2 (built-in thermostat). A 2-stage or modulating wall thermostat can be used if hooked up correctly and according to wiring diagram. 4. Connect the thermostat wires to terminals H1 and P1 as shown in Figure 12. On 208 and 240 volt, single-phase model with line voltage control, install jumpers as shown in Figure 12. FRONT Manual Reset Limits Figure 13 Manual reset limit Two manual reset thermal limits are factory installed on all models. The limits are located on the front of the heater. The manual reset limits will not reset until the buttons are pushed and heater has cooled down. Wiring Diagram Wiring Diagram CEH005P NOTE: For single phase only, a single pole thermostat may be used if H1 and H2 are connected with a jumper and P1 and P2 are connected with a jumper. NOTE: For single phase operation, terminal L2 should be left unconnected. Operation & Maintenance How to operate your heater Turn your built-in or wall thermostat to the desired setting. The heater will run for approximately 20 seconds before the fan comes on. The heater will then run until the thermostat setting is reached. Fan will continue to run with elements shut off for approximately 70 seconds and then will shut off. This cycle will continue as needed based on thermostat setting. Do not use breaker panel or fuse box to control heater. Be sure power to heater is constant all the time. Maintenance 1. Shut off circuit breaker to heater. 2. Remove front diffuser grill or 3 of the center louvers in front of fan area. 3. Using a compressor, blow air through the outer cabinet louvers and finned element areas. (Do not touch sharp surfaces on elements). While holding fan blade (to avoid damage or bending) carefully blow inside the fan motor area. 4. Carefully wipe off the fan blade without damaging or bending it. 5. Reinstall front diffuser or air vanes. 6. Restore power to heater. Troubleshooting Chart CONSULT LOCAL ELECTRICAL CODES TO DETERMINE WHAT WORK MUST BE PERFORMED BY QUALIFIED ELECTRICAL SERVICE PERSONNEL Heater does not operate. Symptom 1. Voltage not correct for application. 2. In line thermostat used. 3. Heater is or has been blocked. 4. Thermostat set too low. 5. Circuit breaker is off. 6. Defective manual reset. Problem 1. Check voltage with voltmeter and/or consult an electrician. 2. Thermostat wires connect at terminal board; supply wires connect at junction block (see wiring diagram). 3. Remove obstruction. Push manual reset in front. 4. Turn knob past sound of click. 5. Turn circuit breaker on. 6. Replace manual reset. Solution Element heats, fan does not operate. 1. Defective time delay switch. 2. Bad motor or wire connection. 3. Fan hitting or rubbing. 1. Replace the delay switch. 2. Replace motor and/or check wire connection. 3. Adjust blade as needed. Fan operates, but does not discharge warm air. 1. Manual reset limit tripped. 2. Defective heater elements. 3. Wire lo...

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