EVCO S.p.A.
EV3 HP & EVD HP | Installer manual ver. 1.2 | Code 1443DHPE124
page 38 of 52
7.6
Condensation control
7.6.1
Initial information
The condensation is controlled by adjustments to the fan that can either be a proportional or ON-OFF type.
If an ON-OFF fan is to be used, connect it to digital output “Enable fan”.
If a proportional adjustment fan is to be used, it should be connected to analogue outlet “Fan”. If an enable outlet is to be used to work
the modulating fan it only has to be connected to digital output “Enable fan”.
For modulating fans, parameter Fn01 enables the start-up time only if the output is configured as cutting phase (CF36 = 1.
The fan can be adjusted independently of the compressor (Fn03=1) or at the request of the compressor (Fn03=0). When the fan is
switched off this will be by-passed by a time equal to Fn06 from switch-on of a compressor. During this period, the fan is set to
minimum speed if the regulator requests cut-off.
7.6.2
Adjustment in cold mode
The diagram below represents the proportional adjustment in cold mode.
In this mode, parameter Fn13 (external fan pre-ventilation time) is also activated to avoid the compressor starting up at a
condensation temperature that is too high. Depending on this parameter, the fan is activated for a time equal to Fn13 before the
compressor is switched on and the fan speed is proportional to the condensation temperature. During this period, the fan is set to
minimum speed if the regulator requests cut-off.
The diagram below represents the ON-OFF adjustment in cold mode.