Tjernlund HS3,4,5 Series with UC1 Universal Control (Version X.02) 8504111 Rev 09/02 - Manual (Page 13)

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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 Re-
established. Reestablish power to the UC1 and interlocked appliances and initiate an appliance call
for heat. After 60 seconds a Prover Start Up fault should arise with LED #4 (RED) and LED #5
(RED) flashing in unison.
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 Prover 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.
ADSAAAAJUSTMENT
UC1 UNIVERSAL CONTROL AND WHKE INTERLOCK KIT
CONNECTED WITH A MILLIVOLT APPLIANCE
XN
R
UNIVERSAL CONTROLLER
D/N 9183046-9
and WHKE Millivolt Interlock Kit
CALL
AS APPLIANCE INTERLOCK VOLTAGE.
RED JUMPER POSITION MUST BE THE SAME
XL
J1
J2
DRY 115V 24V
IMPORTANT:
JUMPER
GENERATED
5 VDC
LEGEND:
115 VAC
WHKE GAS
SAFETY CIRCUIT ACROSS P1 & P2 OF UC1 IS NOT UTILIZED
WITH HEATING EQUIPMENT AS SHOWN.
IN THIS APPLICATION. SPILL SWITCH MUST BE INTERLOCKED
MILLIVOLT
PRESSURE
SWITCH
JUNCTION ADAPTER
THERMOCOUPLE
950-0470 (JA1)
LINEAR LIMIT
SPILL SWITCH
GAS
VALVE
30 MILLIVOLT WATER HEATERS REQUIRE USE OF THE
(ECO) OF WATER HEATER. LINEAR LIMIT SPILL SWITCH,
ON 750 MILLIVOLT (POWER PILE) WATER HEATERS WIRE
LINEAR LIMIT SPILL SWITCH IN SERIES WITH HIGH LIMIT
950-0470 THERMOCOUPLE JUNCTION ADAPTER.
950-0470 JUNCTION ADAPTER AND GAS PRESSURE
SWITCH ARE INCLUDED WITH WHKE KIT.
DO NOT
SUPPLY
POWER.
POWER!
BOARD-
50/60 Hz
SUPPLY
115 VAC
ELECTRICAL BOX.
GROUND
CRIMP GROUND WIRE TO GROUNDING SPADE TERMINAL IN
IMPORTANT:
Each millivolt appliance interlocked with the UC1 must have its own WHKE kit installed. The WHKE Gas Pressure Switch actuates the
Venter through the A - B Dry contacts. The Linear Limit switch disables the heater in the event of a venting malfunction. IMPORTANT:
Each millivolt appliance interlocked with the UC1 must have its own Linear Limit spill switch.
1. Wire WHKE Gas Pressure Switch in series with A and B terminal on UC1. Do not supply voltage to A and B terminals.
2. Wire WHKE Linear Limit in series with thermocouple junction adapter or high limit ECO of water heater.
3. Make sure RED voltage jumper on UC1 is in the DRY position.
4. 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.
5. If not completed, connect ground from UC1 whip to Venter ground in Fan Prover j-box. Connect Black & 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.
ON