Introduction Of The Controller; Main Functions - McQuay MDS030A Design & Installation Manual

C H A P T E R
2
Units Control
2.1 Introduction of Controller
MDS system is controlled by the micro-computer. Several types of controller are available, including
wireless controller, wire controller, wire controller +remote controller and central controller. One wireless
controller can control one unit, one wire controller can control one unit or up to 48 units, while central
controller can control up to 512 units (32groups).

2.2 Main Functions

°ˆ
°ˆ LCD wire controller and remote controller are available
°ˆ Digital scroll compressor is used to reduce the start/stop times
°ˆ Electronic expansion valve is used to control the refrigerant flow
°ˆ One outdoor unit can connect up to 48 indoor units
°ˆ Central control is available
°ˆ Both the indoor and outdoor units have two speeds
°ˆ Timer for ON/OFF
°ˆ Energy saving can be setting when the unit is running in cooling or heating condition
°ˆ High/low pressure protection for the compressor
°ˆ Overload protection for the fan motor in indoor unit and outdoor unit
°ˆ Anti-icing function for the coil of indoor unit
°ˆ Function of auto restart after power
°ˆ Auto defrost and manual defrost can be set
°ˆ Auto check function for the sensor malfunction
°ˆ Overheat protection for the coil of indoor unit
°ˆ Three minutes delayed protection when auto restart after power failure
°ˆ Malfunction indicating
°ˆ Temperature unit can be °Êor F .
Cooling./heating/auto/air supply/dehumidity mode are available
Design & installation Guide For McQuay MDS Multi System
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