ECM Blower Kit
For use with Electric Furnaces
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. Safety
markings are used frequently throughout this manual to
designate a degree or level of seriousness and should not
be ignored. WARNING - Indicates a potentially hazardous
situation that if not avoided, could result in personal injury
or death. CAUTION - Indicates a potentially hazardous
situation that if not avoided, may result in minor or moderate
injury or property damage.
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
power to furnace.
to disconnecting. Reconnect wires correctly.
ECM Blower Data
SPEED TAP
HIGH
(5)
MED-
HIGH (4)
MED
(3)
MED-
LOW (2)
LOW
TONNAGE 4 TON 3.5 TON 2.5-3 TON 2 TON
Static
(ESP) in
W.C.
0.1 1655 1560 1190 940 680
0.2 1630 1530 1160 900 645
0.3 1590 1500 1130 870 615
0.4 1555 1465 1100 830 575
0.5 1525 1435 1060 800 540
0.6 1495 1405 1030 770 510
INSTALLATION INSTRUCTIONS
INSTALLATION SEQUENCE
NOTE: Retain all screws and fasteners for installation of
the new blower assembly.
1. Before beginning the installation, make sure the unit is
not powered and any breakers/disconnects to the unit
are deactivated. Remove the furnace door.
2. Disconnect the thermostat wire connections and unhook
the 6-pin blower plug from the control panel socket.
3. Remove all screws attaching the blower assembly to
the furnace.
4. Slide out the complete blower assembly.
5. Replace the blower in step 4 with the ECM blower from
this kit. Slide into the same position as the removed
assembly, and then fasten with screws.
• For furnaces without PCB Control: Install the
black wire that is supplied with this kit. Determine
your appropriate model from Figures 1, 2, 3, or 4
(pages 2 & 3).
Firmly press the black wire socket termination into
pin location #5 of the blower plug (in the control
panel) and the .25" push-on terminal into the open
contactor termination shown in Figures 1, 2, 3 & 4
(pages 2 & 3). The dashed line represents the field
installed black wire.
• For furnaces with PCB Control: Install the black
wire that is supplied with this kit. Determine your
appropriate model from Figures 5, 6, 7, or 8 (pages
4 & 5).
a.) Temporarily remove the black wire from pin L1
on the control board.
b.) Firmly press the black wire socket termination
(from the kit) into pin location #5 of the blower
plug (in the control panel) and the .25” push-on
terminal into the L1 terminal.
b.) Replace the black wire from the furnace onto the
“piggy-back” terminal of the black wire (from the
kit) at pin L1.
6. Plug the 6-pin plug from this kit into the control panel
socket.
7. Make the required thermostat wiring connections as
shown in Figure 9 (page 6).
8. Reinstall the furnace electrical panel and exterior door,
and then restore power to the unit.
The blower speed is preset at the factory for proper heating
and cooling operation. For optimum system performance
and comfort, it may be necessary to change the factory
set speed. Recommended settings are listed in Table 1
& Table 2. If heat and cool require tap 2, use the included
wire adapter and wire nut.
COOLING HEATING
MODEL
CAPACITY
(KW)
TONNAGE
MOTOR
TAP #
MODEL
CAPACITY
(KW)
MOTOR
TAP #
ALL
1.5-2 2 010-012 1
2.5-3 3 015-023 2
3.5-4 4
Heating and Cooling Settings
2
(Without PCB Control)
1
2
3
4
5
6
5
6
2
4
TRANSFORMER
BLOWER RELAY
FUSE
CONTACTOR
ELEMENTS
LIMITS
“A”
CIRCUIT
BREAKERS
COM 240V
24V
GREY
BLACK
WHITE
RED
YELLOW
BLUE
VIOLET
GREEN
GREY
ORANGE
WHITE
RED
RED
RED
BLACK
BLACK
RED
BLACK
BLACK
RED
GREY
BLACK
LEGEND:
FIELD INSTALLED
LOW VOLTAGE
HIGH VOLTAGE
BLACK
1
2
3
4
5
6
5
6
2
4
TRANSFORMER
BLOWER RELAY
FUSE
CONTACTOR
ELEMENTS
LIMITS
“B”
“A”
CIRCUIT
BREAKERS
COM 240V
24V
GREY
BLACK
WHITE
RED
YELLOW
BLUE
VIOLET
GREEN
GREY
ORANGE
WHITE
RED
RED
BLACK
RED
RED
BLACK
BLACK
RED
BLACK
RED
GREY
BLACK
LEGEND:
FIELD INSTALLED
LOW VOLTAGE
HIGH VOLTAGE
BLACK
Figure 2.
(Without PCB Control)
3
Figure 3.
(Without-PCB Control)
Figure 4.
(Without PCB Control)
1
2
3
4
5
6
5
6
2
4
TRANSFORMER
BLOWER RELAY
FUSE
CONTACTOR
CONTACTOR
ELEMENTS
ELEMENTS
LIMITS
LIMITS
“B”
“A”
CIRCUIT
BREAKERS
COM
240V
24V
GREY
BLACK
WHITE
RED
YELLOW
BLUE
VIOLET
GREEN
GREY
ORANGE
WHITE
RED
RED
GREY WHITE
RED
RED
BLACK
BLACK
RED
RED
BLACK
BLACK
BLACK
RED
BLACK
BLACK
RED
GREY
BLACK
LEGEND:
FIELD INSTALLED
LOW VOLTAGE
HIGH VOLTAGE
BLACK
1
2
3
4
5
6
5
6
2
4
TRANSFORMER
BLOWER RELAY
FUSE
CONTACTOR
CONTACTOR
ELEMENTS
LIMITS
“B”
“A”
CIRCUIT
BREAKERS
COM 240V
24V
GREY
BLACK
WHITE
RED
YELLOW
BLUE
VIOLET
GREEN
GREY
ORANGE
WHITE
RED
RED
GREY WHITE
RED
BLACK
RED
RED
BLACK
BLACK
BLACK
RED
BLACK
BLACK
RED
GREY
BLACK
LEGEND:
FIELD INSTALLED
LOW VOLTAGE
HIGH VOLTAGE
BLACK
4
Figure 5.
(With PCB Control)
1. Supply wire size must be in accordance to the applicable revision of the NEC and all other applicable codes.
2. To change blower speed refer to installation instructions.
3. Refer to furnace installation instructions for thermostat connections.
4. If any wire in this unit is to be replaced it must be replaced with 105° C thermoplastic copper wire of the same gauge.
5. Not suitable for use on systems exceeding 120V to ground.
6. Refer to installation instructions for complete wiring diagram.
7. Heating and cooling may be wired on the same speed using the provided jumper wire.
Model: 10 KW Electric Furnace
NOTES:
1. La taille du câblage d’alimentation doit être conforme à la révision applicable
des codes NEC et des autres codes applicables.
2. Pour changer la vitesse du ventilateur consultez les instructions d’installation.
3. Consultez les instructions d’installation de la fournaise pour les branchements
du thermostat.
5. Ne convient pas à l’utilisation sur les systèmes qui excèdent 120 V à la terre.
6. Consultez les instructions d’installation pour un schéma de câblage complet.
du cavalier fourni.
8. Les terminaux 1-5 du moteur à commutation électronique sont les rapports de
vitesse du moteur qui sont réglables/ajustables sur place.
Optional 4-Speed
Blower
!
WARNING
position before servicing the furnace.
Optional 4-Speed
Blower
!
AVERTISSEMENT
Placez les disjoncteurs en position
10141880
05/16
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
CONTROL
BOARD
Y
G
R
W
C
RC
2L
L1
HEAT
COOL
EAC
L1
L2
HEATER
24V
230V
1
3
5
2
4
6
AC RELAY
COMNO
DC RELAY
COMNO
DC RELAY
COMNO
LIMIT
2
1
4
3
ELEMENT
ELEMENT
10-WHITE-11(17)
NOT ATTACHED.
AC RELAY
COMNO
“CIRCUIT A”
1
3
5
2
4
6
1
3
5
2
4
C
L
G
N
ECM
MOTOR
BLACK
ORANGE
GREEN
BLACK
RED
GRAY
(SEE NOTE 8)
GRAY
WHITE
GRAY
WHITE
RED
GREEN
YELLOW
WHITE
GRAY
BLACK
WHITE
GRAY
RED
RED
YELLOW
BLUE
BLACK
ORANGE
ORANGE
GRAY
BLUE
BLACK
BLACK
GRAY
RED
RED
BLACK
RED
RED
BLACK
KCALB
RED
WHITE
RED
BLUE
5
10141890
05/16
1. Supply wire size must be in accordance to the applicable revision of the NEC and all other applicable codes.
2. To change blower speed refer to installation instructions
3. Refer to furnace installation instructions for thermostat connections.
4. If any wire in this unit is to be replaced it must be replaced with 105° C thermoplastic copper wire of the same gauge.
5. Not suitable for use on systems exceeding 120V to ground.
6. Refer to installation instructions for complete wiring diagram.
7. Heating and cooling may be wired on the same speed using the provided jumper wire.
Model: 12 KW Electric Furnace
NOTES:
1. La taille du câblage d’alimentation doit être conforme à la révision applicable
des codes NEC et des autres codes applicables.
2. Pour changer la vitesse du ventilateur, consultez les instructions d’installation.
3. Consultez les instructions d’installation de la fournaise pour les branchements
du thermostat.
5. Ne convient pas à l’utilisation sur les systèmes qui excèdent 120 V à la terre.
6. Consultez les instructions d’installation pour un schéma de câblage complet.
du cavalier fourni.
8. Les terminaux 1-5 du moteur à commutation électronique sont les rapports de
vitesse du moteur qui sont réglables/ajustables sur place.
Optional 4-Speed
Blower
!
WARNING
position before servicing the furnace.
Optional 4-Speed
Blower
!
AVERTISSEMENT
Placez les disjoncteurs en position
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
“CIRCUIT B”
CIRCUIT BREAKER
10-WHITE-11(17)
NOT ATTACHED.
CIRCUIT BREAKER
CONTROL
BOARD
Y
G
R
W
C
RC
2L
L1
HEAT
COOL
EAC
L1
L2
HEATER
24V
230V
1
3
5
2
4
6
AC RELAY
COMNO
DC RELAY
COMNO
DC RELAY
COM
NO
LIMIT
2
1
4
3
ELEMENT
ELEMENT
AC RELAY
COMNO
“CIRCUIT A”
1
3
5
2
4
6
1
3
5
2
4
C
L
G
N
ECM
MOTOR
ORANGE
GREEN
BLACK
RED
GRAY
(SEE NOTE 8)
BLUE
RED
GRAY
WHITE
RED
GREEN
YELLOW
WHITE
GRAY
RED
GRAY
WHITE
BLACK
YELLOW
BLUE
BLACK
ORANGE
RED
RED
RED
WHITE
BLACK
GRAY
WHITE
RED
BLACK
BLACK
BLACK
BLACK
BLUE
ORANGE
GRAY
RED
RED
GRAY
BLACK
Figure 6.
(With PCB Control)
6
10141900
05/16
Model: 15 KW and 17 KW Electric Furnace
1. Supply wire size must be in accordance to the applicable revision of the NEC and all other applicable codes.
2. To change blower speed refer to installation instructions
3. Refer to furnace installation instructions for thermostat connections.
4. If any wire in this unit is to be replaced it must be replaced with 105° C thermoplastic copper wire of the same gauge.
5. Not suitable for use on systems exceeding 120V to ground.
6. Refer to installation instructions for complete wiring diagram.
7. Heating and cooling may be wired on the same speed using the provided jumper wire.
NOTES:
1. La taille du câblage d’alimentation doit être conforme à la révision applicable
des codes NEC et des autres codes applicables.
2. Pour changer la vitesse du ventilateur , consultez les instructions d’installation.
3. Consultez les instructions d’installation de la fournaise pour les branchements
du thermostat.
5. Ne convient pas à l’utilisation sur les systèmes qui excèdent 120 V à la terre.
6. Consultez les instructions d’installation pour un schéma de câblage complet.
du cavalier fourni.
8. Les terminaux 1-5 du moteur à commutation électronique sont les rapports de
vitesse du moteur qui sont réglables/ajustables sur place.
Optional 4-Speed
Blower
!
WARNING
position before servicing the furnace.
Optional 4-Speed
Blower
!
AVERTISSEMENT
Placez les disjoncteurs en position
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
CIRCUIT BREAKER
10-WHITE-11(17)
NOT ATTACHED.
CIRCUIT BREAKER
CONTROL
BOARD
Y
G
R
W
C
RC
2L
L1
HEAT
COOL
EAC
L1
L2
HEATER
24V
230V
1
3
5
2
4
6
AC RELAY
COMNO
DC RELAY
COMNO
DC RELAY
COMNO
LIMIT
2
1
4
3
ELEMENT
ELEMENT
AC RELAY
COMNO
DC RELAY
COM
NO
ELEMENT
LIMIT
2
1
4
3
AC RELAY
COMNO
“CIRCUIT B”
“CIRCUIT A”
1
3
5
2
4
C
L
G
N
ECM
MOTOR
ORANGE
GREEN
BLACK
RED
GRAY
(SEE NOTE 8)
BLUE
BLACK
RED
ORANGE
ORANGE
WHITE
GRAY
RED
GREEN
YELLOW
GRAY
WHITE
GRAY
BLUE
YELLOW
RED
YELLOW
BLUE
BLACK
RED
WHITE
GRAY
RED
GRAY
WHITE
RED
BLACK
GRAY
BLACK
GRAY
BLACK
RED
RED
RED
RED
WHITE
BLACK
BLACK
BLACK
RED
BLACK
RED
GRAY
WHITE
BLACK
(With PCB Control)
7
Model: 20 KW and 23 KW Electric Furnace
10141910
05/16
1. Supply wire size must be in accordance to the applicable revision of the NEC and all other applicable codes.
2. To change blower speed refer to installation instructions
3. Refer to furnace installation instructions for thermostat connections.
4. If any wire in this unit is to be replaced it must be replaced with 105° C thermoplastic copper wire of the same gauge.
5. Not suitable for use on systems exceeding 120V to ground.
6. Refer to installation instructions for complete wiring diagram.
7. Heating and cooling may be wired on the same speed using the provided jumper wire.
NOTES:
1. La taille du câblage d’alimentation doit être conforme à la révision applicable
des codes NEC et des autres codes applicables.
2. Pour changer la vitesse du ventilateur, consultez les instructions d’installation.
3. Consultez les instructions d’installation de la fournaise pour les branchements
du thermostat.
5. Ne convient pas à l’utilisation sur les systèmes qui excèdent 120 V à la terre.
6. Consultez les instructions d’installation pour un schéma de câblage complet.
du cavalier fourni.
8. Les terminaux 1-5 du moteur à commutation électronique sont les rapports de
vitesse du moteur qui sont réglables/ajustables sur place.
Optional 4-Speed
Blower
!
WARNING
position before servicing the furnace.
Optional 4-Speed
Blower
!
AVERTISSEMENT
Placez les disjoncteurs en position
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
10-WHITE-11(17)
NOT ATTACHED
CIRCUIT BREAKER
CIRCUIT BREAKER
CONTROL
BOARD
Y
G
R
W
C
RC
2L
L1
HEAT
COOL
EAC
L1
L2
HEATER
24V
230V
1
3
5
2
4
6
AC RELAY
COMNO
DC RELAY
COMNO
DC RELAY
COMNO
LIMIT
2
1
4
3
ELEMENT
ELEMENT
AC RELAY
COMNO
DC RELAY
COMNO
ELEMENT
LIMIT
2
1
4
3
AC RELAY
COMNO
AC RELAY
COMNO
DC RELAY
COMNO
ELEMENT
“CIRCUIT B”
“CIRCUIT A”
1
3
5
2
4
6
1
3
5
2
4
C
L
G
N
ECM
MOTOR
ORANGE
GREEN
BLACK
RED
(SEE NOTE 8)
BLUE
GRAY
WHITE
ORANGE
ORANGE
BLUE
BLUE
GRAY
WHITE
RED
GREEN
YELLOW
RED
GRAY
WHITE
BLACK
GRAY
GRAY
YELLOW
BROWN
BLACK
RED
YELLOW
GRAY
WHITE
RED
RED
WHITE
WHITE
GRAY
BLACK
BLACK
GRAY
WHITE
RED
RED
RED
RED
BLACK
BLACK
BLACK
RED
RED
BLACK
GRAY
BLACK
RED
GRAY
BLACK
RED
RED
GRAY
BLACK
RED
BLACK
Figure 8.
(With PCB Control)
(Replaces 10077300)
Specifications & illustrations subject to change without notice or incurring obligations (08/16).
O’Fallon, MO, © Nortek Global HVAC LLC 2016. All Rights Reserved.
Y
FURNACE CONTROL WIRING
5-Wire Thermostat
Wire
nuts
To A/C
L1
C
To
H/P
Heat Pump Thermostat
Wire
nuts
123
456
L1
C
To ECM Motor
Y
4-Wire Thermostat to AC
4-Wire Thermostat
Wire
nuts
To A/C
123
456
123
456
Grey
Grey
White
Green
Red
Grey
L1
C
To ECM Motor
Grey
White
Green
Red
Green
Red
White
Grey
Grey
To ECM Motor
W
G
RH
RC
W
G
R
GRW2 CE
O
Y
Red (See Table 2 - Heating)
Blue (See Table 2 - Cooling)
Red (See Table 2 - Heating)
Blue (See Table 2 - Cooling)
Red (See Table 2 - Heating)
Blue (See Table 2 - Cooling)
Orange L2
Orange L2
Black
Black
Black
Orange L2
5-Wire Thermostat to AC
6-Wire Thermostat to HP
Green
G
Green
G
Green
G
Figure 9. Electric Furnace Thermostat Connections
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
Miller ECM Blower Kit for E3 & E4 Furnace Installation guide
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