
-5-
Design & installation Guide For McQuay MDS Multi System
PWM valve power off
Valve close
Fixed scroll move downwards
Two scrolls gather together
Loading
PWM valve power on
Valve open
Fixed scroll moves upwards
Two scrolls separate
Unloading
Modulation chamber
Discharge pressure
Solenoid valve
Bleed hole
Suction pressure
Unloading
Modulation chamber
Discharge pressure
Solenoid valve
Bleed hole
Suction pressure
Loading
Resident system Commerce system
1.2.2 Sketch Map of Installation
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