
Electrical And Wiring
R
m
v
hi
wir
when doin
wirin
for fa
eed controlle
Wirin
for fan
eed controller
FSC
F
F I
F
T
B
T
B
F I
F
T
PCB
A
OUT_FAN
ower suppl
400V / 3Ph-N / 50H
1
L
T
B
ower suppl
230V / 1Ph-N / 50H
R
m
v
hi
wir
when do
n
w
r
n
for fan s
ee
n
r
r
Fi
u
e
F I
F
F I
F
T
Wirin
for fa
eed controlle
FSC
T
B
PCB
OUT
A
OUT_FAN
L
L
N
L
1
• Refer to the wiring diagram provided on the unit when making electrical wiring.
• Install an isolator (optional) to prevent electrical shock.
• Do not ground any electrical equipment to the water piping.
• Operation of the mini chiller without any fan speed controller (Field supply) is limited to an ambient
temperature of 20C. With the fan speed controller (Field supply), the unit is able to operate down
to -5C.
All mini chillers will have a 1/4” access valve provided for along the liquid
line of the refrigerant circuit.This valve is for direct pressure connection
to the fan speed controller. To install the fan speed controller, screw in
the female adaptor to the 1/4” access valve. Use a pair of spanners to
tighten properly(max. torque 15Nm). See Fig. 8. Ensure there is no leakage at
the joint. Wire the fan speed controller to the terminal blocks.
M4AC / MAC 020 / 025 / 030C/CR
M5AC 020 / 025CR
M4AC / MAC 040 / 050 / 060C/CR
M5AC 030 / 040 / 050 / 055CR
53
FM1 FM2 OF1 OF2
FSC1
FSC2
I
FM2 OF1
OF2
C / H ON/
OFF
OFF ON
C
H
12 VDC or 230V
ower suppl
415V / 3Ph-N / 50H
Wirin
for fan spee
controller
FSC
R
m
v
h
wir
when do wirin
for fa
s
eed controller
M4AC / MAC 080 / 100 / 120 / 150C/CR
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