Tjernlund DCOP1 Constant Operating Pressure Draft Control 8504174 (Discontinued) - Manual (Page 11)

10
UC1 UNIVERSAL CONTROL AND WHKE INTERLOCK KIT
CONNECTED WITH A MILLIVOLT APPLIANCE
SWITCH ARE INCLUDED WITH WHKE KIT.
950-0470 JUNCTION ADAPTER AND GAS PRESSURE
950-0470 (JA1) THERMOCOUPLE JUNCTION ADAPTER.
LINEAR LIMIT SPILL SWITCH IN SERIES WITH HIGH LIMIT
ON 750 MILLIVOLT (POWER PILE) WATER HEATERS WIRE
(ECO) OF WATER HEATER. LINEAR LIMIT SPILL SWITCH,
30 MILLIVOLT WATER HEATERS REQUIRE USE OF THE
SPILL SWITCH
LINEAR LIMIT
950-0470 (JA1)
THERMOCOUPLE
JUNCTION ADAPTER
SWITCH J1
UNIVERSAL
CO
NTRO
L
L
E
R
IN THIS APPLICATION. SPILL SWITCH MUST BE INTERLOCKED
WITH HEATING EQUIPMENT AS SHOWN.
SAFETY CIRCUIT ACROSS P1 & P2 OF UC1 IS NOT UTILIZED
R
XN
XL
PRESSURE
WHKE GAS
RED JUMPER POSITION MUST BE THE SAME
AS APPLIANCE INTERLOCK VOLTAGE.
IMPORTANT:
1
15V
J2
CALL
JUMPER
24V DRY
POWER!
SUPPLY
DO NOT
MILLIVOLT
FIGURE 8050033 3-29-11
BOARD-
POWER.
115 VAC
LEGEND:
5 VDC
GENERATED
GAS
VALVE
FACTORY WIRED TO
L AND N ON DCOP1
Each millivolt appliance interlocked with the UC1 must have its own WHKE kit installed. The WHKE Gas Pressure Switch actuates
the Inducer 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.
NOTE: If only venting millivolt appliances the PSA-1 Fan Proving Switch is not required, see WHKE instructions for
complete details.
UC1 UNIVERSAL CONTROL CONNECTED WITH A 24 OR 115 VAC STANDING PILOT
JUMPER
115 VAC
24 OR 115 VAC
XN
XL
J2
J1
LEGEND:
UNIVERSAL CO
NTRO
LLER
AS APPLIANCE INTERLOCK VOLTAGE.
RED JUMPER POSITION MUST BE THE SAME
115V
CALL
24V DRY
IMPORTANT:
FIGURE 8050032 3-28-11
FACTORY WIRED TO
L AND N ON DCOP1
24V OR 115V GAS VALVE
TR
COM
TH
HOT
INTERNAL CONTROLS
OF FURNACE/BOILER
B2
COM
Aquastat
T-stat
B1
HOT
1. Remove the wire on TH or HOT of gas valve and connect it on #1 on UC1 terminal block.
2. Connect #2 on UC1 terminal block to TR or Common.
3. Connect #4 on UC1 terminal block to TH or HOT on gas valve.
4. Make sure RED voltage jumper on UC1 is on 24V or 115V depending on control voltage.