enervent Fenix 120, Инструкция по установке и эксплуатации, Страница: 20 / 31

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M A I N T E N A N C E
Fenix does not require any mechanical maintenance, only changing of the filters
periodically and cleaning of the heat exchanger and fans (when needed). The power
supply to the unit is cut when the service hatch is opened.
The unit has one hinged door in the front
The door can be lifted off the hinges.
Cleaning the heat exchanger. When changing the filters, check the condition of the heat
exchanger. If cleaning is required, remove it from the unit and carefully wash through the
air channels with a hand shower using a neutral detergent. The heat exchanger can also
be cleaned by blowing through the air channels using compressed air. Do not use a
pressure washer and do not submerge the heat exchanger into water!!
Cleaning the fans. When changing filters, also check the condition of the fans. If cleaning
is needed the fans are removed from the device and cleaned with a toothbrush or
compressed air.
Changing of filters. The recommended time between F5 filter changes is max six (6)
months. The F5 filter can be cleaned between changes by vacuuming, which makes it
possible to keep the same filters for up to one year. The F7 filter should be changed every
12 months. Draw the filters from the device and replace with new filters. The F7 filter is
installed on the outside air side. Vacuum cleaning the inside of the device is recommended
at this point. Close the door carefully.
Regulating the proportion of supply air and exhaust air. The exhaust air flow should
be 5 - 10 % greater than the supply air flow. This is performed by accurately measuring the
air flow through all of the valves with for example a thermo anemometer and by adjusting
them to the correctly calculated values. A correctly balanced system returns a good heat
recovery rate and keeps a slight negative pressure in the building. The negative pressure
keeps the humidity away from the structures. When an adjustment is made, the filters must
be clean and all the valves and outer grilles must be in place. There must not be an insect
net over the fresh air grille.