
19
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
2
7
GN
COOL
DEL
A
Y
RD
TE
RM
3
BL
R
D
8
GN
RD
B
K
ELEC
RD
9
2
3
BK
BL
SEE NOTE 6
1
BK
BI
AS
UNUSE
D
BR
6
6
PL2
BL
5
BK
4
BI
AS
7
9
8
3
ADJ
UST
5
LEARN
-
4
RD
DEHUM
SEE
NOTE
7
2
4
PL1
WH
RD
SEE
NOTE 5
1
1
HEA
T
AF
Y L
B K
B K
HTR1
8
L2
FL
FL
RD
B K
WH
2
M7
Y L
FL
RD
6
R
B L
HTR2
NOTE: WHEN INSTALLING HEATER KIT, ENSURE SPEED TAP DOES NOT EXCEED MINIMUM BLOWER SPEED (MBS) SPECIFIED FOR THE AIRHANDLER/HEATER
TL
TL
TWO (2) ELEMENT ROWS
8
L 1
BK
M4
M2
H TR2
R2
9
L2
RD
M1
3
BK
1
BK
M1
B K
B L
ONE (1) ELEMENT ROWS
TL
HT R3
TL
M2
M3
Y L
HT R2
RD
FL
B L
L 1
TL
L1
4
R2
H TR3
9
R D
8
RD
M4
R1
B K
M3
9
WH
B K
B L
M3
6
BK
RD
BK
P U
RD
6
4
B K
KIT COMBINATION ON THIS UNIT'S S&R PLATE. AFTER INSTALLING OPTIONAL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.
FL
M2
P U
R1
H TR4
TL
HT R1
FL
B K
M6
PU
HTR1
M1
2
W H
M1
5
P LM
B K
TL
B R
RD
BK
MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS INSTALLED. NO MARK INDICATES NO HEAT KIT INSTALLED.
6
W H
7
M1
BK
9
TL
FL
Y L
B R
1
PU
Y L
BK
BL
B K
PLM
7
5
RD
7
M8
R D
2
B L
BL
L 2
TL
THREE (3) ELEMENT ROWS
R D
7
3
1
FL
L 2
B L
RD
4
L1
L 1
L 2
R
M2
P LM
2
M5
5
1
4
H TR1
M2
FOUR (4) ELEMENT ROWS
TL
FL
BK
5
R D
RD
L 1
PLM
3
R D
BK
8
Y L
RD
L 2
B K
B K
3
RD
B L
FL
M4
R D
0140A00039 REV. A
BLWR
OVERCURRENT
TR
HEAT SEQUENCER R1
2
4
V
THE
R
M
O
ST
A
T
C
O
NN
ECT
IONS
GN GREEN
TRANSFORMER
HEAT SEQUENCER R2
GND
FIELD GND
INTERNAL TO
TWO-STAGE INTEGRATED CONTROL MODULE
TX (3)
DEHUM
C
W1 (1)
5
FIELD SPLICE
W1
CFM LED
R
Y1
NOTES:
LOW VOLTAGE (24V)
4
GND
W1
24 V
3 A
4
RX (2)
COLOR CODES:
Y2
TH
STATUS
LED
5. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST RECENT,
DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY (N
THERMOSTAT INPUTS).
208 VAC
Y1
+VDC (1)
TH
INTEGRATED CONTROL
INDOOR
PROT. DEVICE
2
GND (4)
1
C
TR
RESISTER
Y2
2
BR BROWN
DISCONNECT
L2
W2
YL YELLOW
1. PLACE RED WIRE ON TRANSFORMER TERMINAL 2 FOR 208 VAC
OPERATION.
7. DISCARD CONNECTOR PL1 WHEN INSTALLING OPTIONAL HEAT KIT.
COM
24V
THER
MOSTA
T CON
NE
CTI
ONS
4
RX LED
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE BLOWER MUST
BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A
TEMPERATURE RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS
ONLY.
HI VOLTAGE (230V)
3
6. BIAS AND TERM DIPSWITCHES MUST BE IN "ON" POSITION. RED
STATUS LED PROVIDES NETWORK STATUS. GREEN RX LED INDICATES
NETWORK TRAFFIC. USE LEARN BUTTON TO RESET NETWORK.
W2
2
1
O
INTEGRATED CONTROL MODULE
G
VT VIOLET
G
COM
L1
L2
GND
ECM MOTOR
HARNESS
JUNCTION
GND
208/230 VAC
FUSE 3 A
WH WHITE
1
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND
LOCAL CODES.
24 VAC
INDOOR
L1
40 VA TRANSFORMER, SEE NOTE 1
HI VOLTAGE FIELD
3
1
LOW VOLTAGE FIELD
3
2
40 VA
AIR
DIP SWITCHES
BLWR
FUSE
24 VAC
RD RED
DEHUM
PLUG CONNECTION
O
GY GRAY
TERMINAL
EQUIPMENT GND
PK PINK
BL BLUE
DIAGNOSTIC
LED
230 VAC
AIR
W2 (2)
R
TO
MICRO
CIRCULATOR
CIRCULATOR
OR ORANGE
BK BLACK
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED
WHEN SERVICING.
CIRCULATOR BLOWER
COM
4 CIRCUIT HEATER
CONNECTOR
BL
GY
BK
RD
GND
Summary of Contents for MBVC
Page 14: ...14 APPENDIX A ...