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DESIGN AND OPERATING PRINCIPLE
The unit design and operating principle are shown on Fig. 2. The warm foul air from the premises
supplied to the device is puried in the exhaust lter, passed through the heat exchanger and then
extracted outside via the ducts by the exhaust fan. The cool fresh air from the outside enters the unit
through the air ducts and is stripped of impurities in the supply lter.
If the supply air temperature is below the threshold set on the control panel (-10 °C by factory
default) the incoming air is warmed up by a 2 kW electric pre-heater.
The air then passes through the heat exchanger and is delivered into the premises by the supply
fan. The heat exchanger ensures transfer of the heat energy extracted from the warm exhaust air to
the clean outdoor air therefore heating it up. The air streams do not mix in the process.
Heat recovery reduces heat energy losses and, consequently, the heating costs in the cold season.
The supply air can be additionally post-heated by the 2 kW electric heater built into the unit.
The unit design and operating logic are shown in Fig. 2.
The basic conguration includes:
1. Exhaust fan;
2. Supply Fan;
3. Counter-ow heat exchanger;
4. Exhaust air lter, class G4;
5. Supply air lter, class G4;
6. Condensate drip pan;
7. Condensate drain tubes;
8. Electric air pre-heater;
9. Electric air post-heater.
10. Supply air duct temperature sensor.
RESTRICTIONS:
• Do not operate the unit outside the permissible temperature range specied
in the Operation Manual or in areas with aggressive admixtures in the air
and in explosive environments.
• Do not connect drying machines or other similar high-power equipment to the
ventilation circuit.
• Do not use the unit for handling air-dust mixtures.
SAFETY REQUIREMENTS
Installation and operation of the unit shall be subject to the present Operation Manual and the all
appliable local building, re safety, technical and electric regulatory documents.
The unit must be properly earthed.
Prior to connecting the unit to the power mains check for visible damage as well as for any foreign
objects in the fan casing which may damage the impeller blades If necessary, contact the service centre.
ATTENTION!
Make sure to disconnect the unit from the power mains prior to any installation,
maintenance, connection and repair work.
