Lennox CBA25UHE Series User Manual

Page 24
Supersedes
Litho U.S.A.
C
2011
CONSTANT TORQUE LABEL WIRING
DIAGRAM
ELECTRIC HEAT
15 AMP
SUPPLY
VOLTAGE
L1
L2 OR
NEUT.
WIRING DIAGRAM: NO HEAT
WIRE NUTS
BY
OTHERS
14 GRN
2
14 BLK
1
14 YEL(240V) 14 WHT(120V)
6-PIN
PLUG
5
C
L
N
G
14 GREEN
GND
6-PIN CAP
14 YEL
14 YEL
18 BLU
18 BLU
18 BRN
18 BLK
18 WHT
18 YEL
18 GREEN
18 WHT
18 BLK
18 BLU
18 RED
TRANSFORMER
18 BLU
1
2 4 5 6
14 BLK
240V
208V
COM
24V
14 BLK L1
14 YEL L2
24
C
3
4
MTR
1
2
14 BLK
14 YEL
TERMINAL STRIP
18 YEL
18 GREEN
18 RED
TO THERMOSTAT BY OTHERS
18 BLK
18 WHT
18 BLU
W2
W1
O
G
R
DS
C
Y2
Y1
W2
W1
G
R
C
Y1
GND
20 KW = HTR1,HTR2,HTR3 & HTR4
15 KW = HTR1,HTR2 & HTR3
7.5 & 10 KW = HTR1 & HTR2
5 KW = HTR1
HEATERS USED
LOCATION
PLUG PIN
CONTROL (FIELD WIRED)
CONTROL (FACTORY WIRED)
POWER (FIELD WIRED)
POWER (FACTORY WIRED)
BE 24 VOLT, N.E.C. CLASS 2
CONTROL CIRCUIT WIRING TO
HTR = HEATER ELEMENT
SEC L= LIMIT SWITCH
GND = GROUND LUG
CB = CIRCUIT BREAKER
SEQ = SEQUENCER
TR = TRANSFORMER
TD = TIME DELAY (OPT.)
BR = BLOWER RELAY
MTR = BLOWER MOTOR
GND = GROUND
CONNECTION
CAP = MOTOR CAPACITOR
**
THREE POLE SEQUENCER
TIMING - SEC
ON
1-20
20-60
20-60
OFF
40-110
1-30
1-30
TWO POLE SEQUENCER
TIMING - SEC
ON
30-90
30-90
OFF
1-30
1-30
3
6
12
5 4
BLK
YEL
BLK
YEL
RED
YEL
BLK
HTR 1
RED
WHT
BLU
HTR 1
4KW & 5KW
OFF
ON
7.5KW & 10KW
BLK
BLK
YEL
YEL
HTR1
HTR2
RED
BLK BLK
YEL YEL
RED
WHT
BLU
BLU
WHT
3
6
12
5 4
HTR1
HTR2
YEL
BLK
L1
L2
WIRING DIAGRAM - ELECTRIC HEATPART NO. 537981-03
OFF
ON
OFF
ON
12.5KW & 15KW
HTR1
HTR2
HTR3
L1
L2
L1
L2
HTR1
HTR2
HTR3
BLK
YEL
BLK
YEL
BLU
BLK
YEL
BLK
BLK
YEL
YEL
RED
WHT
RED
WHT
BLU
3
6
12
5 4
BLK
BLK
YEL
BLK
BLU
YEL
BLK
OFF
ON
OFF
ON
BLK
BLK
YEL
YEL
BLK
BLK
20KW
HTR 1
HTR 2
HTR 3
HTR 4
3
6
12
5 4
BLK
RED
WHT
BLU
BLK
BLK
RED
WHT
BLU
YEL
YEL
BLK
YEL
YEL
YEL
BLU
BLK
BLU
BLK
BLK
YEL
YEL
BLK
HTR 4
HTR 3
HTR 2
HTR 1
SEQ
SEQ
SEQ
SEQ
SEQ
SEQ
SEQ
SEQ
SEQ
SEQ
PRI LS= LIMIT SWITCH
PRI LS PRI LS
SEC L
SEC L
PRI LS
PRI LSPRI LSPRI LS
PRI LS
SEC L
SEC L
SEC L
SEC L
SEC L SEC L SEC L
PRI LS
PRI LS
PRI LS
PRI LS
L1
L2
L1
L2
CB
CB
CB OR TB
TB = TERMINAL BLOCK
CB OR TB
GND
Cut size: 7" Wide x 9-1/2" Tall
FIGURE 21. Unit Wiring Diagram – Electric Heat and Air Handler

Lennox CBA25UHE Series Specifications

General

Brand	Lennox
Model	CBA25UHE Series
Category	Air Handlers
Language	English