Acson AC050AR [9/11] Chiller control operation guide
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Acson AC050AR [9/11] Chiller control operation guide

Acson AC058A [9/11] Chiller control operation guide
1-8
CHILLER CONTROL OPERATION GUIDE
1. ON/OFF Toggle switch
• Push up to start the chiller.
• Push down to switch off the chiller for servicing and maintenance.
2. Water Entering Temperature °C (Factory Setting)
• Cooling Mode, setting : 12°C
• Heating Mode, setting : 40°C
3. Antifreeze Protection for Cooling Mode
• Setting : 2°C
4. Temperature Setting
• For cooling mode, press the SW1 button switch once. The green LED will blink for a few seconds. Adjust the small
variable resitor (VR3) to the required water entering temperature of between (10°C - 15°C) by
using a suitable tool.
• For extremely low water temperature (obtained by adding glycol), set the water entering temperature to between 3°C to
9°C by adjusting the DIP switch (SW2).
Set
SW2
Temperature °C
SW 2-3 SW2-2 SW2-1
Set by VR3 0 0 0
3001
4010
5011
6100
7101
8110
9111
1 = ON
0 = OFF
If the DIP switch is set to (0,0,0), the setting temperature
will be determined by the VR3 setting. Otherwise,
• For heating mode, press the SW1 button switch twice
and then the red LED will blink for a few seconds.
Adjust the variable resistor (VR1) by setting it to the
required water entering temperature which (35°C ~ 50°C)
for heating mode.
• To prevent water from freezing in the system, adjust the
variable resistor VR2. The setting range is between +3°C
to -4°C.
S1
COMP
L
RL 1 RL 2
NEUTRAL
RL 3
RL 6
RL 5 RL 7
RL 4 RL 8
PCB
AHTR
OF
PUMP
4WV
TH4
TH3
TH2
TH1
AL 1
AL 2
S 2
S 3
S 4
+ 12V
+ 12V
COOL
HEAT
HP
LP
FL
SW 1
VR 1
VR 3
VR 2
OV
S5
S6
PUMP O/L
COMP O/L
SW 2
L
OUTDOOR DEFROST SENSOR SOCKET. (LENGTH 1.0M)
OUTDOOR AIR TEMP. SENSOR. (LENGTH 0.6M)
LEAVING WATER / ANTIFREEZE SENSOR. (LENGTH 1.0M)
ENTERING WATER SENSOR. (LENGTH 0.6M)
CK20AN-ENG 20/07/2000, 14:528

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