User manual TJERNLUND MAC4E CONTROL (COMPATIBLE WITH UC1 CONTROL) 8504112 REV A 0803

[. . . ] Two LEDs for each appliance interlock block are provided on the MAC4E. LEDs #2, 4, 6, 8 (GREEN) shows that the burner is approved to fire after the Venter Fan Prover safety circuit through the UC1 is completed. The MAC4E also has an LED #9 (RED) which means power is supplied to the MAC4E through the UC1. MILLIVOLT INSTALLATIONS Each millivolt appliance interlocked with the MAC4E must have its own WHKE kit installed. [. . . ] If the UC1, P1 & P2 Prover safety circuit is closed, indicating an approved condition, the appliance interlock relay will close making terminal #3 closed to terminal #4. MAC4E LED #2, 4, 6, or 8 (GREEN) shows that the burner is approved to fire. The Power LED #5 (RED) on UC1 or any LED's on UC1 or MAC4E should not be on. Test the safety circuit by removing either lead from Fan Prover switch connected to UC1 P1 and P2 Fan Prover safety circuit. Do not let the opened LEAD touch a ground or damage may occur to the control when power is reestablished. Reestablish power to the UC1 and interlocked appliances and initiate a call for heat. After 60 seconds a Prover Start Up fault should arise with UC1 LED #4 flashing 3 times. Remove appliance call for heat and power to the UC1 and any interlocked appliances. The Power LED #5 (RED) on UC1 or any LED's on UC1 or MAC4E should not be on. Reestablish power to UC1 and interlocked appliances and initiate a call for heat from each appliance to confirm proper operation of UC1, MAC4E and appliances. Perform Draft Adjustment and Combustion air safety check as outlined in Venter/Inducer installation manual. IMPORTANT: DO NOT OPERATE AN APPLIANCE THAT OPERATES WITH THE PROVER SAFETY CIRCUIT DISCONNECTED!RESETTING FAULT CODE CREATED BY STEP 4 OF SAFETY INTERLOCK TEST IMPORTANT: Prior to accessing the fault code memory, note the settings of the UC1 dip switches so that they can be returned to their original Pre / Post-Purge positions. When power is supplied to the UC1 use caution when moving dip switches. The last fault code can be retrieved at any time by setting all dip switches 1-8 to the up, or "on" position. The last fault code, or lack there of, will be indicated by counting the number of times LED 4 flashes. By moving any of the dip switches back to their original position, the fault code will be cleared. NOTE: The UC1 board must have its 115 VAC power supply present when any of the (1-8) dip switches are moved back to their original position for the fault code to clear. Copyright © 2003, Tjernlund Products, Inc. All rights reserved. P/N 8504112 REV A 0803 MAC4E WIRING CONNECTIONS WITH UC1 UNIVERSAL CONTROL Remove power to UC1 and heating equipment when making connections from the MAC4E to the UC1 or installing, servicing or changing dip switch settings in the UC1. Failure to do so may result in personal injury and/or equipment damage. LED #5 (RED) on the UC1 and LED #9 (RED) on MAC4E should not be on if power is removed. See UC1 Universal Control wiring section of Venter or UC1 instructions for 24 VAC, 115 VAC or Millivolt (Dry Contact) appliance interlock diagrams. The MAC4E and UC1 Universal Control appliance interlock steps and diagrams are identical. IMPORTANT: Venter Fan Prover must be wired to P1 & P2 safety circuit in UC1. [. . . ] Connect Black from second MAC4E whip to L on MAC4E connected to UC1. 3. Connect Green from second MAC4E whip to ground screw in MAC4E connected to UC1. 4. Connect Red from second MAC4E whip to F2 on MAC4E connected to UC1. 5. Connect Gray from second MAC4E whip to GND on MAC4E connected to UC1. 6. [. . . ]