4 | Installation guide
4 | Installation guide
Electrical Interface
Symbols
Terminals
R
24VAC Hot
C
24VAC Common
W
not connected
Y/W
Heat/Cool valve relay
G1,G2,G3
Low, Med, High fan relays
TH, GND
Remote 10kΩ water temperature sensor
(BAPI 10K-3)
DP
Drain pan
FZ
Freezestat
Symbols
Terminals
R
24VAC Hot
C
24VAC Common
W
Heat valve relay
Y/A
Cool valve relay
G1,G2,G3
Low, Med, High fan relays
TH, GND
not connected
DP
Drain pan
FZ
Freezestat
Symbols
Terminals
R
24VAC Hot
C
24VAC Common
W
Auxiliary heater relay
Y/A
Heat/Cool valve relay
G1,G2,G3
Low, Med, High fan relays
TH, GND
Remote 10kΩ water temperature sensor
(BAPI 10K-3)
DP
Drain pan
FZ
Freezestat
(A) 2-pipe system
(B) 4-pipe system
(C) 2-pipe with Auxiliary heat system
