Electrical Wiring Connection - McQuay CK Series Installation Manual

WATER PIPING CONNECTION
The indoor unit is equipped with water outlet and inlet bare connection. There is an air-vent for air purging that is fitted at the
outlet water header.
3 ways solenoid valve is required for cycling off or bypass the chilled water.
Black steel pipe, polyethrene pipe, PVC pipe and copper tube are recommended in field installation.
All types of piping and connection must be insulated by polyurethane (ARMAFLEX type or equivalent) to avoid condensation.
Do not use contaminated or damaged pipe and fitting for installation.
Some main fitting components are needed in the system to enhance the capacity and ease of service, such as gate valve,
balancing valve, 2 ways or 3 ways solenoid valve, filter, strainer etc.
Chiller
NOTE:
This is a proposed wiring connection. It may change subject to the chiller unit and must comply with the local and national
code and regulations.
FL FM FH SH TH L
IM-FCU-0999L (Eng)
Gate Valve
Three Way Valve
Gate Valve
Good Controlling

ELECTRICAL WIRING CONNECTION

CC10BW~CC40BW
FCU 1
N
FL FM FH SH TH L
TH
3wv
x1
Chiller
CK20AW~CK50AW
CE20DW~CE40DW
FCU 1
COMP L N
3wv
x1
Chiller
11
Gate Valve
Two Way Valve
FCU FCU
Gate Valve
Bad Controlling
FCU 2
FL FM FH SH TH L
N
TH
3wv
x2
3wv
x1, x2, x3
TH
FCU 2 FCU 3
COMP L N COMP L
3wv 3wv
x2
3wv Solenoid Valve for 3 way valve
x1, x2, x3 Relay (220-240V, 10A)
1-11
7/14/00, 1:18 PM
Gate Valve
FCU
Gate Valve
Worst Controlling
FCU 3
N
TH
R
S
T
3wv
N
x3
Solenoid Valve for 3 way valve
Relay (220-240V, 10A)
Thermostat
N
R
S
T
N
x3
IM-FCU-0999