EVCO c-pro micro SAVE - Manual (Page 39)

C-PRO MICRO SAVE APPLICATION MANUAL
Page 39
6.6.3.1 Cyclical defrosting with minimum temperatures
The set point must be determined along with its differential for the activation of the defrosting
cycle.
When the anti-freeze minimum temperature condition is reached a cyclical by-pass sequence of the
recovery heat exchanger is activated to allow the exhaust air (warmer, from the room) to defrost the
recovery heat exchanger air channels as shown in the below diagram.
After the (parameter Pr03) delay the by-pass damper is activated to allow defrosting. As soon as the
exhaust air temperature is back above the accepted value the damper is deactivated and the recovery
heat exchanger starts again.
Note: If the anti-freeze probe is in alarm condition the function is disabled.
Pr01: Setpoint
OFF
Pr02: Diff.
ON
T. Anti-freeze
OFF
ON
Exhaust air minimum temperature
By-Pass damper
OFF
ON
Pr03 Pr03
T. Anti-freeze