Tjernlund HSJ, 1, 2 Series with UC1 Universal Control (Version X.04) 8504106 Rev B 05/03 User Manual
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UC1 UNIVERSAL CONTROL OPERATIONAL CHECK
1. Confirm power is supplied to the Control. LED #5 (RED) should be on.
2. Activate the UC1 by initiating an appliance call for heat. LED #1 (AMBER) should be on.
3. The motor relay will close and activate the Venter motor. LED #3 (GREEN) should be on and
Venter motor should be running.
4. If the safety circuit across P1 & P2 (Venter Prover) is closed, indicating an approved condition, the
appliance interlock relay will close making terminal #3 closed to terminal #4 & LED #2 (GREEN).
Appliance burner should fire.
5. Remove power to the UC1 and any interlocked appliances. The LED #5 (RED) or any LED’s
should not be on. Test the safety circuit by removing the Blue or Yellow Lead from Fan Proving
Switch. 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 LED #4 flashing 3 times.
6. Remove appliance call for heat and power to the UC1 and any interlocked appliances. The LED #5
(RED) or any LED’s should not be on. Reconnect Blue or Yellow Fan Prover lead to Fan Proving
Switch terminal removed from in step 5.
7. Reestablish power to UC1 and interlocked appliances and initiate a call for heat to confirm proper operation of UC1 and appliance.
RESETTING FAULT CODE CREATED BY STEP 5 OF OPERATIONAL CHECK
IMPORTANT: Prior to accessing the fault code memory, note the settings of the 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.
1 9
LED 1 AMBER
LED 2 GREEN
LED 3 GREEN
LED 4 RED
LED 5 RED
ON
UC1 UNIVERSAL CONTROL CONNECTED TO AN OIL-FIRED FURNACE WITH A
HONEYWELL T87 OR EQUIVALENT NON-POWERED THERMOSTAT
XN
R
UNIV
E
RS
A
L CO
NTRO
LLE
R
REMOVE JUMPER TO AVOID
AS APPLIANCE INTERLOCK VOLTAGE.
RED JUMPER POSITION MUST BE THE SAME
XL
J1
J2
DRY
115V
24V
IMPORTANT:
BACKFEEDS OR SHORT
50/60 Hz
SUPPLY
115 VAC
NON-POWERED THERMOSTAT
F
F
T
T
D/N 9183047-1
PRIMARY CONTROL
SPADE TERMINAL IN ELECTRICAL BOX.
GROUND
CRIMP GROUND WIRE TO GROUNDING
IMPORTANT:
OR EQUIVALENT
5 VDC BOARD-GENERATED
LEGEND:
115 VAC
DO NOT SUPPLY POWER!
POWER.
LOW VAC
HONEYWELL T87 OR EQUIVALENT
W
O
WHITE
ORANGE
B
BLACK
HONEYWELL
R8184 SERIES
IMPORTANT:
FACTORY-
WIRED
CIRCUITS.
1. IMPORTANT: Remove J1 & J2 Call Jumper on UC1 to avoid backfeeds or short circuits.
2. Connect T87 or Equivalent non-powered thermostat to A and B terminals on UC1.
3. Remove T T Jumper from R8184 or equivalent Primary Control.
4. Connect #3 on UC1 terminal block to T terminal of Primary Control.
5. Connect #4 on UC1 terminal block to remaining T terminal of Primary Control.
6. Make sure RED voltage jumper on UC1 is on DRY.
7. Connect 115 VAC supply voltage to L & N terminals on UC1. Crimp Ground wire to grounding spade terminal in UC1.
Important: Installer must supply overload and disconnect protection.
8. If not previously completed, connect ground from UC1 whip to Venter ground. Connect Black and White leads from UC1 whip
to Venter motor leads. Connect Blue and Yellow leads from UC1 whip to Fan Prover switch. Prover Leads are not 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.