SAVE VTR 150K SERVICE AND ACCESSORIES INSTALLATIONV01 20210316

Service
|
25
4.3.1 Component descriptions
4.3.1.1 Fans
Fans have an external EC type rotor which can be steplessly controlled individually 16–100%. The motor bearings are
life time lubricated and maintenance free. It is possible to remove the fans for cleaning, see “User Manual” for more
information.
4.3.1.2 Filters
The air filter captures dust, mold, pollen and other particulate matter.
The filters need to be replaced when polluted. New sets of filters can be acquired from your installer or wholesaler.
4.3.1.3 Heat exchanger
SAVE VTR 150/K is equipped with a highly efficient, rotating heat exchanger. Required supply air temperature is there-
fore normally maintained without adding additional heat.
The heat exchanger is removable for cleaning and maintenance, see “User Manual” for more information.
4.3.1.4 Main circuit board
The main circuit board controls all functions and the unit.
It is possible to connect external accessories to a free terminals on the main circuit board.
4.3.1.5 Connection box
Connection box is placed outside of the unit. It contains connection board. All external accessories can be connected to
the unit via connection board with freely configurable terminals.
4.3.1.6 Temperature sensors
The sensors are connected to the main circuit card. See wiring diagram for more information.
4.3.1.7 Humidity sensor
Relative humidity sensor (RHS/EAT) is positioned in the extract air chamber and connected to the main circuit board.
See wiring diagram for more information.
The sensor is used to measure the temperature and control the speed of the fans and humidity transfer of the rotary
heat exchanger.
4.3.1.8 Electrical Re-heater battery
The re-heater battery is positioned in the supply air chamber.
The re-heater is activated by a relay and switches on if the supply air temperature is lower than the set point and
switches off if one or more of the following conditions are met:
1. If the supply air temperature is above the set point.
2. If the over heat protection is activated or the sensor is malfunctioning.
3. If the emergency thermostat is triggered or broken.
4. If the supply air sensor is in error state.
5. If the supply air fan is not running.
6. If the heater is set to disabled in the menu.
| v1.1