Nibe VVM 225 User Manual page 36

Cooling in 2-pipe system
VVM 225 contains a built-in function for operating cooling in a 2-pipe system
down to 17 °C, factory setting 18 °C. This requires that the outdoor module can
perform cooling. (See the Installer Manual for your air/water heat pump.) If the
outdoor module can perform cooling, the cooling menus are activated in the
display on the indoor module (VVM).
In order for operating mode "cooling" to be permitted, the average temperature
must be above the setting value for "start cooling" in menu 4.9.2
The cooling settings for the climate system are adjusted in the indoor climate
menu, menu 1.
EXTERNAL ADJUSTMENT
Menu
1.9.2
36 Chapter 3 | VVM 225 – at your service
Caution
With underfloor heating systems,
normally be set to between 35 and 45 °C.
With underfloor cooling, "min. flow line temp." must be restricted to
prevent condensation.
Check the max temperature for your floor with your installer/floor
supplier.
TIP
Wait 24 hours before making a new setting, so that the room temper-
ature has time to stabilise.
If it is cold outdoors and the room temperature is too low, increase
the curve slope by one increment.
If it is cold outdoors and the room temperature is too high, lower the
curve slope by one increment.
If it is warm outdoors and the room temperature is too low, increase
the curve offset by one increment.
If it is warm outdoors and the room temperature is too high, lower the
curve offset by one increment.
max flow line temperature should
NIBE VVM 225