4.3 Frost protection
To prevent freezing of the heat exchanger at low outdoor temperatures, the appliance features a frost control.
Temperature sensors measure the temperatures in the appliance, when required a preheater is switched on. If in
the event of very low temperatures the preheater has insufficient capacity, stepless unbalance is created in the
appliance.
The software ‘recognizes’ the appliance.
4.4 Plus version
The ‘Plus’ version is equipped with an extra control board with more connections for various applications.
This extra control board is located in a plastic housing behind the existing control board on top of the appliance.
It is also possible to remove the entire Plus pcb including casing from the appliance and mount it on, for
example, a wall separate from the heat recovery appliance; this can be handy in certain circumstances such as a
poor WiFi signal from the Plus pcb.
A standard heat recovery appliance can also later be modified into a Plus version using the Plus pcb upgrade set.
1 = Ubiflux Vigor W325 appliance with mounted Basic pcb
2 = Plus pcb mounting plate
3 = Plus pcb
4 = Plus pcb protective cap
Ubiflux Vigor W325 615743-G
