Xpelair Natural Air PH 180, Руководство по установке

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Section 4 – Installation
4.5.11 Installation of an External filter box. (Natural Air 180 models only)
Note : The filter already fitted inside the Natural Air 350 range of units can be changed for different types,
without the need for an external filter box.
If required on the Natural Air 180 models only, an external filter box can be fitted into the fresh air inlet duct
work.
(See Accessories listed in the User handbook for the range of available filter boxes).

The Filter box is fitted into the Fresh air duct as shown in Fig 4.15a and Fig 4.15b below.

Note the relative position of the Filter box and the Pre-heater (if fitted).
NOTE!
When an external filter box is fitted to the Fresh air duct work : Remove the left hand Inlet filter
inside the Natural Air 180 unit. (Ensure the cover strip is replaced – See Fig 5.1 in User Manual)
Fig 4.15 Natural Air 180 : Scheme showing positioning of an external filter box and a Pre-heater box.
NOTE!
For Passivhaus* approval:
The 180 PH model requires a 1kW Pre heater and an external F7 filter box. (See Fig 4.15).
The 350 PH model requires a 2.7kW Pre heater and an internal F7 Fresh Air filter.
See User handbook for recommended accessories for use with the PH models.
* “A Passivhaus is a building, for which thermal comfort can be achieved solely by post-heating or
post-cooling of the fresh air mass, which is required to achieve sufficient indoor air quality
conditions – without the need for additional recirculation of air.”
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