Section 2 – Description of the Device
NOTE!
See Table 3.1 on Page 7 for Factory set Supply and Extract flow rates.
See Section 6.3 Installer menu – Change the Air flow rates. (As determined by the design).
NOTE!
The following documents are needed for correct designing of the system:
• Details of the building and the rooms or areas to be ventilated.
• Floor plans indicating room use.
• Sectional drawing indicating room heights.
NOTE!
An incorrectly specified system can lead to insufficient ventilation and can cause high noise levels
and an excessive energy consumption.
Applicable guidelines and regulations must be observed and complied with. RXG recommend using:
Domestic Ventilation Compliance Guide and
Approved Document, Part F
Both are available from www.planning portal.gov.uk.
WARNING:
Using the ventilation unit together with open flue fuel burning devices (e.g. fireplaces, gas stoves) is
subject to further special requirements.
Any applicable national as well as regional guidelines and regulations must be observed.
We strongly recommend you consult a qualified specialist.
WARNING:
Fire regulations must be complied with. E.g. Fire dampers should be fitted, where required.
2.5 Design
Fig. 2.2a Structure of the Natural Air 180
Fig. 2.2b Structure of the Natural Air 350
1 Back plate and sides
2 Control panel and display
3 Inspection door
4 Front cover
5 Connection nozzle, extract air
6 Connection nozzle, supply air
7 Connection nozzle, exhaust air
8 Connection nozzle, fresh air
9 Defrost Heater supply output (PH variants only)
*
10 Boost Heater supply output (PH variants only) *
* External Heater boxes (not supplied) are
available
as an accessory. (See User Manual for details).
6
