Daikin WDC087 - Page 35

IM 1044-2 Centrifugal Chillers 35
Figure 21, Communication Wiring
NOTE: A fourth chiller, Chiller D would be connected to chiller C same as chiller C to chiller B.
Chiller A
PIGTAIL
485
OPDR
C
A
B
UCM
J10
J11
BLU/WHT
WHT/BLU
SHIELD
(+)
(-)
UNIT CONTROL
J11 PORT
Chiller B
485
OPDR
C
BLU/WHT
WHT/BLU
SHIELD
B
A
UCM
J10
PORT
Chiller C
(+)
(-)
J11 Port
UNIT CONTROL
UNIT CONTROL
P
P
P
P