silavent Green Line HRX2 Series, Инструкция по установке и эксплуатации

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LAB939R, Issue 2, July 2014 Page 13
2.8.5 Alternative proprietary duct insulation may be used provided it complies with the 2010
Domestic Ventilation Compliance Guide.
2.8.6 When passing through a fire-stopping wall or fire-compartment wall, Domus FireBrake
intumescent duct connectors should be used in order to comply with The Building
Regulations.
2.8.7 Alternative proprietary fire-stopping methods may be employed provided they comply with
Approved Document B of The Building Regulations.
2.8.8 Rigid ducting – install using the least number of fittings to minimise resistance to airflow.
Important:
Reducing the duct size below Ø150mm diameter or 220mm x 90mm rectangular
may have an adverse effect on airflow performance. All duct runs should be as short and as
straight as possible for maximum performance.
2.8.9 Flexible ducting – ensure flexible ducting lengths are kept to a minimum and ducting is pulled
taut so that it is smooth and straight. Where bends are necessary and where ducting runs in
restricted areas, ensure that the ducting is not crushed. Mechanically fix flexible ducts using
Domus 125-6 hose clips and tape seal using Domus 50TP45 duct tape or any good quality
proprietary duct tape for added air-tightness.
2.8.10 The fresh supply air must be drawn in from the exterior of the property. If drawn through a
wall, a Domus 905 airbrick or Domus 6904 fixed louvred grille should be fitted. If drawn in
through the roof a Domus 4411 universal roof terminal should be fitted or a proprietary roof
terminal designed for mechanical ventilation with a free area of at least 15175mm².
2.8.11 The stale extract air must be expelled to the exterior of the property. If expelled through a
wall, a Domus 905 airbrick or Domus 6904 fixed louvred grille should be fitted. If expelled
through the roof a Domus 4411 universal roof terminal should be fitted or a proprietary roof
terminal designed for mechanical ventilation with a free area of at least 15175mm².
2.8.12 It is recommended that the fresh supply and stale exhaust external inlets and outlets should
be fitted at least 2m apart to avoid recirculation of stale exhaust air.
2.8.13 Further details regarding installation can be found in the 2010 Domestic Ventilation
Compliance Guide.