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InRow: What is capacity regulation?

Published date: 03 September 2020

What is capacity regulation?

Product line: 
ACRD100, ACSC100.

All versions and serial numbers.

Configuration & Installation.

Capacity regulation is achieved by using an electronic Hot Gas Bypass Valve (HGBV) which allows the unit to operate at low load conditions down to 2.5KW without compressor recycling. As the suction pressure drops the valve will start to feed discharge gas into the evaporator coil raising the overall suction pressure.  The HGBP valve is also used to equalize system pressures at start-up and will also open in the event a high head pressure event may occur. 



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