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V2-C5-15-03-v1
1.4. VERSO-R/RHP – Air Handling Units Equipped with Rotary Heat Exchanger
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1. Air dampers (closing)
2. Supply air filters
3. Exhaust air filters
4. Supply air fan with electric motor
5. Exhaust air fan with electirc motor
6. Rotary heat exchanger
7. Air heater (water or electric)
8. Air cooler (water or direct evaporation)
9. Main module
10. Base frame
11. Sections connection
12. Sections connection
13. Sealing gasket
14. Connection bolt
15. Frequency inverter
16. Extension module
1.5. Brief Description of the Unit
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Casings of air handling units are made of galvanized steel sheets, which are powder painted. Mineral wool is
used for thermal insulation and sound attenuation. Unit cover panels are 45 mm thick.
• The air handling units are intended for ventilation of medium-sized and big-sized spaces (eg. shops, offices,
etc.), having operating ambient temperature and relative humidity. As standard, the unit is designed for indoor
and outdoor (with additional parts) placement. The operating temperature range for the unit is -30 °C ... 40 °C,
outdoor air temperature.
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The air handling unit is not to be used to transport solid particles, even not in areas where there is a risk of
explosive gases.
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VERSO-R is equipped with a rotary heat exchanger, VERSO-RHP air handling units with a rotary heat exchan-
ger and a heat pump system, VERSO-P/PCF – with plate heat exchanger, air filters, an electric or water
heater, fans and automation control system, to ensure safe and efficient operation of the unit.
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Before you open the door, the unit must be switched off and the fans must have been given time to stop (up
to 3 minutes).
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The unit contains heating elements that must not be touched when they are hot.
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To maintain a good indoor climate, comply with regulations and, to avoid condensation damage, the unit must
never be stopped apart from during service/maintenance or in connection with an accident.
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If the unit is placed in spaces with high humidity, condensation might occur on the surface of the unit when
outdoor temperatures are very low.
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Under conditions, when the outdoor air temperature is low and humidity is high, risk of heat exchanger frost-
ing may appear. For this reason anti-frost protection function is foreseen in the controller of the Komfovent air
handling units. Depending on the type of the recovery, different methods of anti-frost protection are available:
cold air by-passing, or / and supply air fan speed reducing. For extremely low outdoor air temperature the duct
mounted preheater is recommended. Counter cross flow heat exchanger is the mostly sensitive for low outside
air temperatures, as the risk of frosting appears in the temperature range from 0 to -5 °C and below. Standard
aluminium cross-flow plate heat exchanger has better features, as the risk of freezing appears only at -10 °C.
The lowest risk and the highest resistance to cold outside air is a competitive feature of the rotary heat ex-
changer, as it is not freezing even at the temperatures of -30 °C if the humidity level of the air is appropriate.
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