General Diagram - York YLCA Series Technical Information

General diagram,

YLCA 20,27 and YLHA PLUS 5-27
24
TRANSFORMER
230
N
B1: WATER INTAKE TEMPERATURE PROBE (SET POINT CONTROL)
B2: WATER DISCHARGE TEMPERATURE PROBE (ANTIFREEZE PROTECTION)
B3: COIL TEMPERATURE PROBE FAN SPEED AND DEFROST CONTROL)
B4: OUTDOOR TEMPERATURE PROBE (DYNAMIC SET POINT)
ID1: WATER FLOW SWITCH
ID2: REMOTE COOL/HEAT
ID3: HIGH PRESSURE SWITCH
ID4: LOW PRESURE SWITCH
ID5: REMOTE ON/OFF
230.1.50
G0 B1 B2 B3 ID5
G GND GND Y GND
315
mA
FAN SPEED
L
CONTROL
230.1.50
N
L
No1
No2
ID3 ID1
ID4 ID2
PRESSURE PROBE
C1/2 C1/2 C3/4 X C5
No3 No4 C3/4 X No5
(B4)
P
PROGRAMMABLE
KEY
COMMUNICATION
39