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All mini chiller series is precharged with refrigerant R22, the only pipe work that needs to be done is to connect the water
piping between the mini chiller (outdoor unit) and the fan coil (indoor unit).
Purging of the refrigerant R22 in AC040A/AR ~ 058A/AR series is only required if the unit is installed separately with
hydraulic kit.
In this close water system, the pump can cater for longer piping compared to normal direct expansion units.
After connecting all the pipes and equipments, filling water in the circuit, perform leak check for all the connections and
joints. Do not start the unit when the system is leaking.
To optimize the capacity of the system, ensure that the system is free of air bubbles or air-traps. Air traps in the system
seriously unbalance the whole system. It is very important to check the whole water system especially ensuring that the water
tank is not full of water. This protection step is not only to prevent tank & piping corrosion but also to ensure optimum
performance of the unit. This can be done by releasing the air trap from the auto-air-vent (water tank) and manual air vent
(installed in the highest place of the water system).
MODEL
Voltage Range
Power Supply Cable Size
Number of conductor
Interconnection Cable Size (mm
IMPORTANT : These values are for information only. They should be checked and selected to comply with local and/or
national codes of regulations. Which is also subject to the type of installation and size of conductors used.
REFRIGERANT CIRCUIT
WATER FILLING
ELECTRICAL WIRING CONNECTION
AC040A/AR ~ AC058A/AR
4
2
)
2.5
Thermometer
Flexible
Gate Valve
Strainer
Gate Valve
Presure
Thermometer
Differential Valve
Gate Valve
Flexible
Gate Valve
Thermometer
Flexible
Gate Valve
Gate Valve
Presure
Thermometer
Differential Valve
Gate Valve
Flexible
Gate Valve
Strainer
Gate Valve
Water Feeding / Drainage
AC075B/BR
380 – 420V/3ph / 50Hz +
6
2.5
Expansion
Tank
Gate Valve
Three Way Valve
FCU
Gate Valve
Good Controlling
Gate Valve
Three Way Valve
FCU
Gate Valve
Good Controlling
1-6
AC100B/BR
AC125BR
10
16
2.5
2.5
Two Way Valve
Gate Valve
Gate Valve
FCU
FCU
Gate Valve
Gate Valve
Worst Controlling
Bad Controlling
Two Way Valve
Gate Valve
Gate Valve
FCU
FCU
Gate Valve
Gate Valve
Worst Controlling
Bad Controlling
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