Specifications

53
ELECTRICAL AND WIRING
Re
m
o
v
e
t
hi
s
wir
e
when doin
g
wirin
g
for fa
n
sp
eed controlle
r
W
irin
g
for fan
sp
eed controller
(
FSC)
F
SC
O
F IN
O
F OUT
T B
3
T B
3
O
F IN
O
F OUT
T
O
(PCB)
OUT_F
AN1
T
O
(A) OUT_FAN
1
CAP
ACIT
O
R
P
ower suppl
y
400V / 3P h-N / 50H
z
L
1
N
T B 1
R
S
T
N
L 2
L
3
T B
3
P
ower suppl
y
230V / 1P h-N / 50H
z
Re
m
o
v
e
t
hi
s
wir
e
when do
i
n
g
w
i
r
i
n
g
for fan s
p
ee
d
co
n
t
r
olle
r
F
i
gur e
8
O
F IN
O
F OUT
O
F IN
O
F OUT
W
irin
g
for fa
n
sp
eed controlle
r
(
FSC)
F
SC
T B
3
T
O
(PCB)
O
UT
_
F
AN1
T
O
(A) OUT_FAN
1
CAP
ACIT
O
R
L1
N
T B 1
L
/
L
1
N
/
L
2
1
5
N
m
• 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.
A4AC / AMAC 20 / 25 / 30C/CR
A5AC 20 / 25CR
A4AC / AMAC 40 / 50 / 60C/CR
A5AC 30 / 40 / 50 / 55CR
FM1 FM2 OF1 OF2
FSC1
FSC2
4WV
2
4WV
1
HTR
ALL
I
N
ALL
FM1
FM2 OF1
OF2
C / H ON/
OFF
OFF ON
C
H
12 VDC or 230V AC
P
ower suppl
y
415V / 3P h-N / 50H
z
W
irin
g
for fan spee
d
controller (F S C )
Re
m
o
v
e
t
h
ese
wir
es
when do wirin
g
for fa
n
s
p
eed controller
A4AC / AMAC 80 / 100 / 120 / 150C/CR