16 User Guide RS8GR602 © Danfoss 2016-10 AK-CT 450A
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Hot gas defrosting.
Hot gas defrosting is adapted to commercial appliances/
rooms with limited system lling.
One relay controls the main valve in the suction line.
One relay controls the hot gas valve.
One relay controls the drain valve.
There is no time delay between stops of hot gas and start
of draining.
”Two-compressor” operation.
The two compressors must be of the same size. On start-up
(after defrosting, operational stop, etc.) both compressors are
started with a set time shift. One compressor starts at half the
dierential so that an optimum adaptation of compressor
capacity takes place for the current load in the appliance/
room. There is automatic runtime equalisation between the
compressors.
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