Broan nortron 21D10, Installation And User Manual

Page: 8 / 24

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8. W
IRING
D
IAGRAMS
!
WARNING
Risk of electric shock. Disconnect power before installation, servicing, maintenance or field wiring. Replace all panels
before operating. Failure to do so can result in electric shock causing severe injuries or death.
24V
DC
LO
5
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.
Critical characteristic
Line voltage wiring:
UL AWM 1015/1230, 600V, 105°C, VW-1, 12 AWG;
CSA TEW 600V, 105°C, FT1, 12 AWG.
Low voltage wiring:
same ratings as high voltage except 18 AWG.
HI
MED
MED
LOW
FAN MOTOR SPEED
BLACK
BLUE
YELLOW
RED
COLOR
LEGEND
C
E
KC
K
MRTP
HEAT
L1, L2
Capacitor
Heating Element
Heating Element Relay
Fan Relay
Auto-Reset Thermal Protector
Manual-Reset Thermal Protector
240 V Line Supply
ARTP
M
TB
T
N
Fan Motor
Terminal Block
Transformer Class 2
Heat
Neutral
F1 Fuse
Low power
High power
High power 8 AWG
For the use of a two-stage thermostat or an outdoor thermostat, connect between W1 and W2.
Make sure that the Heat Activation switch is set to “Slow” position.
B Breaker
W
Open: 93.3°C
MRTP 1 MRTP 2
W
W
P
GR
Power
Heat 1 Heat 2 Heat 3 Heat 4
Vout
GND
1 2 3 4 5 6 7
P3
W
Y
24VAC
F1
5 AMPS
BOARD POWER SUPPLY
BLK
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
P2
P1
GR
PP
24 VAC
COMMON OUT
FUSED 24 VAC
POWER OUT
CALL FOR FAN
CALL FOR COOL
REVERSING VALVE
CALL FOR HEAT 1
CALL FOR HEAT 2
CALL FOR COOL 1
Y1
W2
W1
O
Y/
Y2
G
R
C
Heat Activation
PP
PP
GR
HEAT
INDICATOR
PP
B
X13 COM
X13 HEAT X13 COOL XFMR
L1 L1
L2 COM
L2 L2
R
R
B
B
B
O
W
Class 2 Transformer
Pri: 240 V 60 Hz
Sec: 24 V 60 Hz 40 VA
T
R
B
Y
Y
TB
Speed Selector
MED
R
Y
R (MED)
Y (LO)
BL (LO)
NC
B (HI) M
NC
M
4
3
2
1
N
G
L
C
C=COM
L=LINE
G=GROUND
N=NEUTRAL
O
BL
BL
P
5
1
2
4
3
6
W
W
K7
24V
DC
KC1
GR
COM
HEAT 1
W
W
NO
W
B
P 24V
DC
KC2 COM
HEAT 2
NO
B
HEAT 2
E
ARTP
R
HEAT 1
E ARTP
R
B
R
L1
L2
N
G
R
R
R
B
B
B
W
Open: 93.3°C
MRTP 1 MRTP 2
W
W
P
BR
GR
Power
Heat 1 Heat 2 Heat 3 Heat 4
Vout
GND
1 2 3 4 5 6 7
P3
W
Y
24VAC
F1
5 AMPS
BOARD POWER SUPPLY
P1
24 VAC
COMMON OUT
FUSED 24 VAC
POWER OUT
CALL FOR FAN
CALL FOR COOL
REVERSING VALVE
CALL FOR HEAT 1
CALL FOR HEAT 2
CALL FOR COOL 1
Y1
W2
W1
O
Y/
Y2
G
R
Heat
Activation
PP
PP
GR
C
B
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
P2
GR
PP
HEAT
INDICATOR
PP
B
X13 COM
X13 HEAT X13 COOL XFMR
L1 L1
L2 COM
L2 L2
R
R
B
B
B
O
W
Class 2 Transformer
Pri: 240 V 60 Hz
Sec: 24 V 60 Hz 40 VA
T
R
B
Y
Y
24V
DC
LO
5
TB
Speed Selector
MED
R
Y
R (LO)
Y (MED)
BL (MED)
NC
B (HI) M
NC
M
4
3
2
1
N
G
L
C
C=COM
L=LINE
G=GROUND
N=NEUTRAL 1=LO
2=MED HI
3=MED HI
4=HI
5=HI
O
BL
BL
P
5
1
2
4
3
6
W
W
K7
B
R
L2
N
G
R
R
R
B
B
B
R
B
B
HEAT 3
E
ARTP
R
HEAT 1
E ARTP
R
HEAT 2
E ARTP
R
B
B
B
W
NO
W
NO
W
NO
24V
DC
KC1
GR
COM
HEAT 1
R
R
BR
P P
COM
R
COM
24V
DC
KC2
HEAT 2
24V
DC
KC3
HEAT 3
B2
25 A
B1
50 A
10 KW 240 VAC
Single phase
15 KW 240 VAC
Single phase
WIRING COLOR CODE
B BLACK
BL BLUE
BR BROWN
GR GREY
P PINK
O ORANGE
PP PURPLE
R RED
W WHITE
Y YELLOW
FE0049A
L1
1=MED
2=LOW
3=LOW
4=HI
5=HI
21ECM10 Model
21ECM15 Model