General Diagram - York YLCA Series Technical Information

General diagram,

YLCA 5, 7, 9, 12 and 15
24
TRANSFORMER
230
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 PRESSURE SWITCH
ID5: REMOTE ON/OFF
NOTE 1.- WHEN THE LOW AMBIENT KIT IS INSTALLED. THE B4 PROBE MUST BE CONFIGURED AS A PRESSURE TRANSDUCER. AND B3 AS
AN OUTDOOR TEMPERATURE NTC PROBE.
38
230.1.50
G0 B1 B2 B3 ID5
G GND GND Y GND
315
mA
FAN SPEED
N L
230.1.50
N
L
No1
No2
ID3 ID1
ID4 ID2
CONTROL
C1/2 C1/2 C3/4 X C5
No3 No4 C3/4 X No5
PROGRAMMABLE
KEY
(B4)
P
LAK ACCESSORY
YLCA 5, 7, 9, 12 and 15
(see note 1)
COMMUNICATION