42 VI.72.M4.02 Danfoss 11/97 BC-HM
Control principle
PI control of supply air temperature (duct
temperature - S1). Temperature held
constant by motor valve control M in
System 5-A - Ventilation system with constant supply air temperature
System 5-B - Ventilation system with constant room temperature
Control principle
PI control of supply air temperature (duct
temperature - S1) and P room
temperature control (S2). Temperature
held constant by motor valve control M
in heat exchanger primary circuit. Fan
P1 controlled by relay R1, damper P2 by
relay R2.
System types 5-A and 5-B - Ventilation system
heat exchanger primary circuit. Fan P1
controlled by relay R1, damper P2 by
relay R2.
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