Air Filter Box (Optional Accessory); Cleaning The Heat Exchanger - Xpelair Xcell 400 QV Installation And Operating Instructions Manual

9.2 Air filter box (optional accessory)

The MVHR is fitted with G4 Filters as standard. To protect allergy sufferers against environmental pollution, for
example, it may be useful to install a filter box with finer Filters. These Filters are designed to offer the longest service
life and lowest pressure loss and are installed in a box immediately after the supply air outlet. Class F5 or F7 Panel
Filters are available as the filter elements.
The F5 or F7 Panel Filters fitted in the Air Filter Box should be checked for cleaning / replacement at the same time
as the other MVHR Filters.
Please contact the UK sales office for further details, contact details can be found on the back of this booklet.
Please note:
If the external air is drawn in via a geothermal Heat Exchanger, a class G4 Filter should be installed in the intake
tower.

9.3 Cleaning the heat exchanger

The Heat Exchanger should be cleaned by a specialist technician as and when required depending on the level of
contamination, but at least every 2 years. Contact details for servicing by Xpelair approved technicians can be found
on the back of this booklet. The cleaning procedure is as follows:
1. Disconnect the MVHR from the mains supply.
2. Remove the Access Hatch by turning it to the left.
3. Remove the Retaining Bracket located in front of the Heat Exchanger by removing the screw, see picture
below.
4. Carefully pull the Heat Exchanger out forwards using the black plastic strap around the Heat Exchanger,
keeping it horizontal to avoid damaging the EPP housing, see picture below.
5. Thoroughly rinse the Heat Exchanger with lukewarm water and allow all the water to drain off.
6. Residual moisture will evaporate when the MVHR is operated.
7. Carefully insert the cleaned Heat Exchanger, keeping it horizontal to avoid damaging the EPP housing.
8. Replace the Heat Exchanger Retaining Bracket and retaining screw.
9. Replace the Access Hatch by locating and turning to the right.
10. Switch the mains supply back on.
11. The MVHR is ready to recommence operation.
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