Primary parameters:
3.4.2 DX cooling (cooling unit)
DX cooling may be configured for controlling compressors or cooling stages. The Air2 system will start and stop
the compressors as required and will trigger alarm in case of errors in the cooling circuits. The compressors are
started/stopped via 4 digital outputs.
3.5
Heat exchanger
The Air2 system may use various heat exchangers for heat recovery (WRG).
Bypass dampers in the heat exchangers will be controlled via a 0-10 V signal from the Air2 system. The exhaust air
temperature is measured after the extract air has passed the heat exchanger to protect the heat exchanger from
freezing up.
Primary parameters:
Protection from frost and
freezing
At temperatures below the set value plus P-band, the bypass
damper will be controlled up to 100% open. The warm extract air
will in this way protect the heat exchanger from freezing.
O P E R A T I N G A N D I N S T A L L A T I O N I N S T R U C T I O N S L G
7 5 0 - L G 6 0 0 0
P A G E
1 9
