Installation and User Guide
8
Pub. No. 18HD51D1-1C-EN
09/2020
Part No.
37-7769005
NOTES:
1) Wire third party condensate overflow
switches between Y of the thermostat
and Y1 of the airflow control board
2) X2 is required to energize aux heat
during defrost
Cooling with GAT2, GAM2 & TEM3, 4
Indoor Unit
Outdoor Unit
Thermostat
Rc
Rh
O/B
Y
G
W
C
R
G
W1
B
B
Y/Y1
