Nortron D SERIES Installation And Operating Instructions Manual - page 7
WIRINGS DIAGRAMS
WARNING
Risk of electrical shock. Disconnect power before installation, servicing, maintenance or field wiring. Replace all
panels before operating. Failure to do so can result in electrical shock causing severe injuries or death.
!
7
24
VAC
CRG
Y/Y2
OW
1
W
2
Y
1
24VAC
COMMON OUT
FUSED 24VAC
POWER OUT
CALL FOR
FAN
CALL FOR
COOL.
REVERSING
VALVE
CALL FOR
HEAT 1
HEAT
COOL
FAN
XFMR
V
S
POWER
L1
L2
COM
L2
L2COM2
CO
M
P3-1 P3-2 P3-3
P3-4
P3-5
P3-6 P3-7
BOARD POWER
SUPPLY
POWER
HEA
T
1
HEA
T
2
HEA
T
3
HEA
T
4
VOUT
GND
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
F1
5 A
E
HTL
HEAT 1
E
HTL
G
L2
L1
MRHTL
HEAT 3
KC1
KC3
COM
NO
COM
NO
BLK
BLU
RED
Class 2 Tranformer
Prim.: 240V 60Hz
Second.: 24V 60Hz 40VA
YEL
YEL
RED
BLK
BLK
BLK
RED
RED
BLK
BLK
RED
BLK
WHT
HEAT 3
HEAT 1
PNK
GRY
PNK
GRY
WHT
YEL
YEL
WHT
WHT
CONTINUOUS
SPEED
RED
GRN
N
RED
GRN
YEL
K7
4
6
2
5
1
3
PNK
YEL
BLU
ORG
WHT
P3
P2
P1
RED
BLK
PNK
CS
T
M
BLK
RED
ORG
BLK
C
24 Vdc
24 Vdc
CALL FOR
COOL 1
CALL FOR
HEAT 2
24 Vdc
MRHTL
WHT
WHT
Open: 93.3°C (200°F)
24Vac
coil
24V~
KC1B
BLK
GRY
NC
RED
F
F + H
PPL
PPL
PPL
GRY
GRY
SEASON SELECT
HEAT INDICATOR
VS
LO
MED-LO
RED
YEL
BLU
RED
VENTILATION SPEED
21D10
24
VAC
CRG
Y/Y2
OW
1
W
2
Y
1
24VAC
COMMON OUT
FUSED 24VAC
POWER OUT
CALL FOR
FAN
CALL FOR
COOL.
REVERSING
VALVE
CALL FOR
HEAT 1
CO
M
P3-1 P3-2 P3-3
P3-4
P3-5
P3-6 P3-7
BOARD POWER
SUPPLY
POWER
HEAT 1
HEAT 2
HEAT
3
HEAT 4
VOUT
GND
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
F1
5 A
E
HTL
E
HTL
HEAT 1
E
HTL
G
L2
L1
MRHTL
HEAT 2
HEAT 3
KC2
KC1
KC3
COM
NO
COM
NO
COM
NO
Class 2 Tranformer
Prim.: 240V 60Hz
Second.: 24V 60Hz 40VA
YEL
YEL
RED
BLK
RED
BLK
BLK
BLK
RED
RED
BLK
BLK
BLK
RED
BLK
WHT
HEAT 3
HEAT 2
HEAT 1
PNK
BRN
GRY
PNK
BRN
GRY
WHT
YEL
YEL
WHT
WHT
WHT
RED
GRN
N
RED
GRN
K7
4
6
2
5
1
3
PNK
YEL
BLU
ORG
WHT
P3
P2
P1
RED
BLK
PNK
T
BLK
RED
ORG
24 Vdc
24 Vdc
24 Vdc
CALL FOR
COOL 1
CALL FOR
HEAT 2
24 Vdc
MRHTL
WHT
WHT
Open: 93.3°C (200°F)
24Vac
coil
24V~
KC1B
BLK
GRY
NC
RED
F
F + H
PPL
PPL
PPL
GRY
GRY
HEAT INDICATOR
VS
LO
MED-LO
RED
YEL
BLU
RED
VENTILATION SPEED
21D15
Line voltage wiring:
UL AWM 1015/1230, 600V, 105°C,
VW-1,12AWG;
CSA TEW 600V, 105°C, FT1, 12AWG.
Low voltage wiring: same ratings as
high voltage except 18AWG.
Critical Characteristic
1. If any of the original wire, as
supplied, must be replaced, use
the same equivalent wire. Wiring
must comply with applicable codes,
ordinances and regulations.
2. Field wiring must comply with
applicable codes, ordinances and
regulations. Use only Class 1 wiring
inside furnace compartments.
For the use of a two-stage heat
thermostat or an outdoor thermostat,
connect between W1and W2. Make
sure that the
Season Select s
witch
is set to the Mild Position.
HI
BLACK
MED-HIGH
BLUE
MED-LOW
YELLOW
LOW
RED
FAN
MOTOR SPEED
COLOR
WIRING COLOR CODE
BLK BLACK
BLU BLUE
BRN BROWN
GRN GREEN
GRY GREY
ORG ORANGE
PNK PINK
PPL PURPLE
RED RED
WHT WHITE
YEL YELLOW
BLK
BLK
PPL
PPL
BLK
BLK
SS
TB2
TB2
HI
MED-HI
MED
-LO
LO
K2
K2
K1
UTEC
1139-600/-630
ORG
ORG
GRN
LEGEND
C Capacitor
F1 Fuse
E Heating Element
KC Heating Element
Relay
K Fan Relay
HTL Auto-Reset
Thermal Protector
MRHTL Manual Reset
Thermal Protector
M Fan Motor
TB2 Terminal Block
T Transformer Class 2
HEAT Heat
L1, L2
240V Line Supply
N Neutral
HEAT
COOL
FAN
XFMR
V
S
POWER
L1
L2
COM
L2
L2COM2
K2
K2
K1
UTEC
1139-600/-630
BLK
BLU
RED
YEL
M
C
HI
MED-HI
MED
-LO
LO
ORG
GRN
BRN
BRN
BRN
BRN
ORG
BLK
NC
NC
FE0014A
CONTINUOUS
SPEED
CS
SEASON SELECT
SS