Tjernlund UCRT Rooftop Inducer Universal Control (Version X.06) 8504162 Rev A 05/11 - Manual (Page 8)

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UC1 UNIVERSAL CONTROL CONNECTED WITH A SINGLE ZONE 24 VAC THERMOSTAT
XN
R
U
N
IVER
SAL C
O
N
T
R
O
LLER
THERMOSTAT
G G
INTERNAL CONTROL
OF FURNACE
W
C
Y
R
R
Y
AS APPLIANCE INTERLOCK VOLTAGE.
RED JUMPER POSITION MUST BE THE SAME
XL
J1
J2
W
DRY 115V 24V
IMPORTANT:
D/N 9183046-5
115 VAC
24 VAC
LEGEND:
CALL
JUMPER
50/60 Hz
SUPPLY
115 VAC
SPADE TERMINAL IN ELECTRICAL BOX.
GROUND
CRIMP GROUND WIRE TO GROUNDING
IMPORTANT:
1. Connect W from t-stat to #1 on terminal block of UC1.
2. Connect #2 on UC1 terminal block to C on internal control terminal strip of furnace/boiler.
3. Connect #4 on UC1 terminal block to W on internal control terminal strip of furnace/boiler.
4. Make sure RED voltage jumper on UC1 is on 24V.
5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground.
Important: Installer must supply overload and disconnect protection.
6. If not previously completed, connect Black, White and Red leads from UCRT to like colors in Rooftop Inducer whip 4x4 weather-
proof junction box. Connect the Green/Yellow ground lead in UCRT to the ground screw in the Rooftop Inducer whip 4x4
weatherproof box. Connect Blue and Yellow leads from UCRT to PSA-1 Fan Prover switch. Prover Leads are not polarity sensitive.
NOTE: If burner safety control goes out on lockout, the Inducer will continue to run as long as a call for heat is present.
UC1 UNIVERSAL CONTROL CONNECTED WITH A 24 VAC ELECTRONIC IGNITION MODULE
XN
R
UNIV
E
RS
A
L
CO
NTRO
LLE
R
D/N 9183046-8
115 VAC
24 VAC
LEGEND:
HONEYWELL IGNITION
CONTROL
MV
MV
PV
CALL
AS APPLIANCE INTERLOCK VOLTAGE.
RED JUMPER POSITION MUST BE THE SAME
XL
J1
J2
DRY 115V 24V
PV
MV / PV (2)
MV (1)
PV (3)
BNR GND (4)
24V GND (5)
24V (6)
(7)
(8)
SPARK (9)
OR
PI
YE
GR
YE
WH
OR
YE
WH
OR
GR
GAS VALVE
JUMPER
50/60 Hz
SUPPLY
115 VAC
SPADE TERMINAL IN ELECTRICAL BOX.
GROUND
CRIMP GROUND WIRE TO GROUNDING
IMPORTANT:
1. Remove the wire on MV at gas valve and connect it on #1 on UC1 terminal block.
2. Connect #2 on UC1 terminal block to MV/PV.
3. Connect #4 on UC1 terminal block to MV on gas valve.
4. Make sure RED voltage jumper on UC1 is on 24V.
5. Connect 115 VAC supply voltage to L & N terminals on UC1. Connect the 2 green ground wires in UCRT to supply ground.
Important: Installer must supply overload and disconnect protection.
6. If not previously completed, connect Black, White and Red leads from UCRT to like colors in Rooftop Inducer whip 4x4 weather-
proof junction box. Connect the Green/Yellow ground lead in UCRT to the ground screw in the Rooftop Inducer whip 4x4
weatherproof box. Connect Blue and Yellow leads from UCRT to PSA-1 Fan Prover switch. Prover Leads are not polarity sensitive.
UC1 BURNER INTERLOCK WIRING DIAGRAMS