Tjernlund UC1 Universal Control (Version X.04) 8504107 Rev C 02/04 User Manual
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UC1 UNIVERSAL CONTROL CONNECTED TO A GAS OR OIL BURNER WITH AN AQUASTAT
XN
R
UN
IV
ER
SA
L CO
NT
RO
LL
E
R
LINE VOLTAGE OIL BURNER
PRIMARY CONTROL, BURNER
L1
N
XL
J1
J2
115V
DRY
24V
AQUASTAT
B2
B1
C1
C2
L1
L2
D/N 9183046-7
115 VAC
LEGEND:
CALL
JUMPER
RELAY OR GAS VALVE
50/60 Hz
SUPPLY
115 VAC
RED JUMPER POSITION MUST BE THE SAME
IMPORTANT:
AS APPLIANCE INTERLOCK VOLTAGE.
SPADE TERMINAL IN ELECTRICAL BOX.
GROUND
CRIMP GROUND WIRE TO GROUNDING
IMPORTANT:
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. 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.
6. 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.
UC1 UNIVERSAL CONTROL AND WHKE INTERLOCK KIT
CONNECTED WITH A MILLIVOLT APPLIANCE
XN
R
UNI
V
E
RS
A
L CO
NT
RO
LLE
R
D/N 9183046-9
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 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.
If using a Draft Inducer and only venting millivolt appliances the PS1505 Fan Proving Switch is not necessary, see WHKE
instructions for complete details.