Lennox Merit Series Installation Instructions Manual page 12

HEAT PUMP UNIT
CBA38MV
(TWO-STAGE)
R R
W3
W2
W1 W1
O
O
2
L
Y1 Y1
Y2
G
Y2
DS
3
OUT
BL
Y2
C C
OUTDOOR UNIT
RED
FAN RELAY (NOT REQUIRED
WITH SINGLE−SPEED
OUTDOOR FAN)
PURPLE
BLACK
YELLOW
BLUE
BROWN (NOT USED FOR APPLICATIONS WITHOUT LSOM
BLUE (NOT REQUIRED FOR SINGLE STAGE)
RESISTOR KIT (CAT # 47W97) IS REQUIRED
WHEN CONNECTING THE COMFORTSENSE
7000 WITH THE LSOM 2.
Heat Pump Application — Humiditrol
Second-Stage Outdoor Fan Relay Wiring with
CBA38MV
Typical Field Wiring — Heat Pump Application with
COMFORTSENSE
7500
X2658 OUTDOOR SENSOR IS REQUIRED FOR OUTDOOR
1 TEMPERATURE DISPLAY, DEW POINT CONTROL, HEAT PUMP AND
DUAL FUEL BALANCE POINTS.
R
H CONNECTED ON UNIT WITH LSOM. RESISTOR KIT (CAT # 47W97)
2
IS REQUIRED WHEN CONNECTING THE COMFORTSENSE 7000
WITH THE LSOM 2.
W2
1
3
W1
FIELD-PROVIDED JUMPER BETWEEN Y2 OUT BL ON HEAT
O. D.
PUMP TO Y2.
SENSOR
O
(X2658)
L
Y1
Y2
G
D
T
B
T
C
CUT ON-BOARD LINK R-DS WHEN DEHUMIDIFICATION TERMINAL IS USED.
FIGURE 13
®
and
FIGURE 14
CBA38MV
IMPORTANT - USE CARE WHEN CUTTING LINKS TO
PREVENT DAMAGE TO CONTROL. SEE INSTALLATION
INSTRUCTION FOR FURTHER DETAILS.
CUT ON-BOARD LINK Y1-Y2 FOR TWO-STAGE HP
CBA38MV
RED
BLACK
PURPLE
IMPORTANT - USE CARE WHEN CUTTING LINKS TO
PREVENT DAMAGE TO CONTROL. SEE INSTALLATION
INSTRUCTION FOR FURTHER DETAILS.
CUT ON-BOARD LINK Y1-Y2 FOR TWO-STAGE A/C ONLY
CUT ON-BOARD LINK R-DS WHEN DEHUMIDIFICATION
Page 12
CUT ON-BOARD LINK R -O.
COMFORTSENSE
7500 THERMOSTAT
OUTDOOR
SENSOR
T
T
(X2658)
CUT ON-BOARD LINK R -O.
TERMINAL IS USED.
AIR
HANDLER
CONTROL
Y1-Y2
2-STAGE
COMPR
R-O
HEAT
PUMP
R-DS
DEHUM
OR
HARMONY
AIR
HANDLER
CONTROL
Y1-Y2
2-STAGE
COMPR
R-O
HEAT
PUMP
R-DS
DEHUM
OR
HARMONY