Genvex VANVEX R +, Manual

Page: 38 / 52

38
7.5. Defrosting
When the evaporation temperature (T2) falls below 0°C, the evaporator starts to
accumulate ice on its fins. In order to maintain the unit reliable and well performing, an
automatic defrosting operation is activated.
Defrosting can occur between 60 minutes and 120 minutes from the last defrosting
or from the last moment in which the evaporation temperature was above 0°C.
Defrosting can occur with two different strategies according to the conditions of the
inlet air.
Code
Set point
name
Description Range
Factory
setting
D29
OFF* Normal operation.
OFF/
Hygrostat/
Ventilation
Max/
Start-Stop
OFF
Hygrostat*
The fan always runs according to the input signal
in GC1 (0-10V) from an external hygrostat,
CO
2
-sensor or similar appliances.
1. If the voltage is between 0 - 3.0 V the fan
speed is D5 (Fan min speed).
2. If the voltage is between 3.0 - 8.0 the fan
speed is D4 (Fan medium speed).
3. If the voltage is higher than 8 V the fan
speed is D3 (Fan max speed).
Ventilation
max*
If the ventilation function is already selected,
a signal higher of 2V to GC1 leads to maximum
air flow.
Start/
stop* If GC1 receives a signal higher than 2V, the unit
operation is stopped.
D30
Filter
timer The filter function is activated (ON) or deacti-
vated (OFF).
OFF/ON OFF
D31
Filter
timer time
If the filter function is ON then the timer of the
filter can be selected. This set point determines
the number of months after which the filter
alarm is displayed.
0 -12 3
D32
Filter
reset Once the air filter has been replaced, activate
this function to reset the filter timer.
OFF/ON OFF
D33 T HP max
The maximum water temperature that can be
reached by the heat pump in °C .
50-65 60
External control