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ELECTRICAL WIRING
All wiring from the UC1 to the appliance must be appropriate Class 1 wiring as follows: installed in rigid metal conduit, intermedi-
ate metal conduit, rigid non-metallic conduit, electrical metallic tubing, Type MI Cable, Type MC Cable, or be otherwise suitably
protected from physical damage.
The "1" input terminal on the UC1 can accept either a 24 VAC or 115 VAC control signal. IMPORTANT:
The RED voltage
jumper must be positioned based on appliance interlock voltage 24V or 115V. If using the “DRY” contact activation method, use
terminals A & B on UC1 control and position the RED voltage jumper tab in the “DRY” position. See millivolt appliance interlock
diagram for further information.
IMPORTANT:
Only one interlock method (i.e. 24V, 115V or “Dry”) can be used with the UC1.
Multiple appliance interlocks require the use of our MAC-Series multiple appliance controls.
The steps listed under each diagram are intended as a supplement to the diagram. Wiring colors or designations may vary by
manufacturer. If you are unable to wire the UC1 as outlined in these instructions, call Tjernlund’s Customer Service Department
toll free at 1-800-255-4208 for assistance.
UC1 UNIVERSAL CONTROL CONNECTED TO A GAS OR OIL BURNER WITH AN AQUASTAT
1. Disconnect B1 from L1 of oil burner primary control, burner relay or hot of gas valve and reconnect to #1 on UC1 terminal block.
2. Connect #2 on UC1 terminal block to B2 or N.
3. Connect #4 on UC1 terminal block to the L1 on line voltage oil burner primary control, burner relay or gas valve.
4. Make sure RED voltage jumper on UC1 is on 115V.
5. The PSA-1 Fan Prover is only used for Draft applications, not Combustion Air applications. Wire PSA-1 prover leads to
P1 and P2 PROVER terminals in MPCI. Prover leads are non polarity sensitive.
NOTE:
If burner safety control goes out on lockout, the Venter will continue to run as long as a call for heat is present.
INTEGRAL UC1 ELECTRICAL SPECIFICATIONS