9 Rev. 1
WIRING DIAGRAMS
TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL
SHOCK, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
BBA w/ EHK05B/C
OR
RD
BK
COM
208
240
T
R
A
N
S
F
O
R
M
E
R
BU
YL
YL7
YL7
VT14
VT
TH
CAP
MIB
BR
UNUSED
L1
L2
121110
987
654
321
R
C
Y
E
O
G
R
C
THERM
UNUSED
UNUSED
FAN
IDLE
FAN
FAN
COM
1
R1
11146301 REV. 0
FACTORY SUPPLIED WIRING
FIELD SUPPLIED WIRING
LOW VOLTAGE
HIGH VOLTAGE
COLOR
CODE:
1ST GROUP-COLOR
2ND GROUP-NUMBER
BLACK-BK
BLUE-BU
RED-RD
TAN-TN
GRAY-GY
ORANGE-OR
GREEN-GN
YELLOW-YL
VIOLET-VT
BROWN-BR
WN-WIRE NUT TH-THERMISTOR
CAP-CAPACITOR
MIB-MOTOR INDOOR BLOWER
R-RELAY
HT-HEATER
FL-FUSABLE LINK
1
2
3
UNIT MUST BE PROPERLY GROUNDED.
USE COPPER CONDUCTORS ONLY.
SUITABLE FOR MINIMUM 75°C
PUT DESIRED SPEED TAP ON TERMINAL
MARKED "FAN". IF DESIRED, PUT OFF
CYCLE SPEED TAP ON TERMINAL MARKED
"FAN IDLE". PUT UNUSED SPEED TAPS
ON TERMINALS MARKED "UNUSED".
CONTROL BOARD MALFUNCTION
CONTINUOUS NONE
6 FLASHES
SYSTEM ERROR 3 SECONDS
THERMISTOR ERROR
THERMISTOR AND/OR BOARD ERROR
NORMAL OPERATION
MODE
4 FLASHES
2 FLASHES
1/2 SECOND ON
LED ON TIME
LED FLASH CODE
3 SECONDS
3 SECONDS
1/2 SECOND OFF
LED OFF TIME
3A FUSE MAX
4
LOW VOLTAGE
HIGH VOLTAGE
RD26 (LOW)
BU24 (MED)
BK27
(HI)
FL1
HT1
4
12 PIN
CONNECTOR
LED
W2
Y
E
W2
O
G
C
R
L
O
G
I
C
THERMISTOR
TRANSFORMER
208
L1
240
L2
COM
FAN
COM
CAP
MIB
FAN
IDLE
FAN
L2
L1
FL1 HT1
R1
11
10
7
5
4
3
2
1
WARNING: DISCONNECT POWER
BEFORE SERVICING.
RD-L1
BK-L2
RD
L1
BK
L2
VT
WH
BBA MODELS ONLY
69
5
5 FIELD LOW VOLTAGE CONNECTIONS
PER INSTALLATION INSTRUCTIONS.
R1
L2
L1
GND
FIELD CONNECT
208/240 10 VAC
WN
WN
3
2
OR
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