RELAY PANEL
18-HD68D1-10 15
1
2
*See note on page 7 regarding HUM and AUX
terminals.
Caution: Do not run Outdoor/Remote sensor wires in
the same bundle with HVAC wires. Also, keep away
from high voltage wiring to avoid interference.
NOTES:
1. Cut the BK jumper at the indoor unit - After cutting the
jumper, power must be off or cycled on-off-on for the
IFC to work properly
2. Requires either:
a.) 1050 control
b.) 850 control with 3.0 or later software
Note:
Not a valid combination with 950 control
CFM/Ton must be set to 400
Furnace LED’s will read “
CoF”
continous fan during
cooling operation
SOV
STG2
STG1
STG1
STG3
STG2
FAN
PWM
HUM
HUM
AUX1
AUX1
AUX2
AUX2
24V
ONL
Y
24V
ONL
Y
24V
ONL
Y
O
Y1
Y2
W1
W2
W3
G
BK
HUM*
HUM*
AUX1*
AUX1*
AUX2*
AUX2*
RELAY PANEL
R
O
B/C
Y1/Ylo
BK
Y/Y2
W1
W2
G
INDOOR UNIT
D
R
B
OUTDOOR UNIT
COMMUNICATING
CONTROL
D
R
B
D
R
B
14-Communicating VS Heatpump w/Non-Communicating S9V2 Furnace (4 pin VSPD Motor)
Diagram 15 - Communicating VS Cooling w/Non-Communicating S9V2 Furnace
(4-pin VSPD Motor)
Diagram 16 - Package 1 or 2 Stage Heat/Cool w/Variable Speed Blower
1
*See note on page 7 regarding HUM and AUX
terminals.
Caution: Do not run Outdoor/Remote sensor wires in
the same bundle with HVAC wires. Also, keep away
from high voltage wiring to avoid interference.
NOTES:
1. Remove “R” to “BK” jumper and clip all “Y”
connections at the integrated motor control board
(ICMC) to enable pulse width control of the variable
speed indoor blower. Ensure clipped wires are
capped and taped off.
15- PACKAGE 1 OR 2 STAGE HEAT/COOL w/VARIABLE SPEED BLOWER
SOV
STG2
STG1
STG1
STG3
STG2
FAN
PWM
HUM
HUM
AUX1
AUX1
AUX2
AUX2
24V
ONL
Y
24V
ONL
Y
24V
ONL
Y
O
Y1
Y2
W1
W2
W3
G
BK
HUM*
HUM*
AUX1*
AUX1*
AUX2*
AUX2*
RELAY PANEL
R
B
Y/Y1
Y2
W1
W2/X2
G
BK
PACKAGE UNIT
COMMUNICATING
CONTROL
D
R
B
D
R
B