Positioning Of Air Ducts; Air Ducts For Extraction - Renson HEALTHBOX II Compact Handbuch

en Healthbox
7.5 • Positioning of air ducts
• Ensure an air-tight air duct network. The Renson Easyflex has the highest air tightness class 'D'.
• Avoid the use of sharp bends (< 90°) in both fixed ducts and in flexible lines wherever
possible. Do not locate sharp bends in the lines just before the ventilator unit.
• In order to prevent the formation of condensation in the ducts, insulated lines should be used if
these lines are located outside the insulated volume of the apartment.
• Use fixed ducts wherever possible. The fixed ducts have a lower air resistance and are
intended to bridge distances.
• The purpose of the flexible aluminium line is to make a bend more gradual and to soften
vibrations. The flexible line is used for the following purposes:
Renson flexible
line
Aludec
Isodec
Acoudec
• Preferably use round ducts for risers.
7.5.1 • Air ducts for extraction
The following factors are important for the correct determination of the required RENSON
Easyflex air ducts (for extraction):
– Intended extraction air flow
– Distance between ventilator unit and extraction point
– Acoustic comfort for the user
– Pressure loss over the air ducts
• In order to be able to guarantee acoustic comfort, RENSON
velocity of 3.0 to 3.5 m/s.
The table below shows the required number of duct sections, at which the air velocity of
3.5 m/s is not exceeded:
Type of room
Toilet
Laundry
Bathroom without toilet
Bathroom with toilet
Kitchen
Kitchen with odormatic
Bedroom
The technical data sheet of the Easyflex gives and overview of the air velocity at which the
demanded air flow is achieved with the different types of air duct.
86
II (Compact) & Healthbox
®
Properties
Insulated
– Acoustic damping
– Insulated
oval flexible
Required
air flow
(140x60mm)
25m³/h
50m³/h
50m³/h
60m³/h
75m³/h
150m³/h
30m³/h
®
– Connecting ventilator unit and extraction grilles to the
fixed ducts (approx. 0.5m length)
– Connecting ventilator unit and roof gland/ facade
gland
Same application as Aludec, for non-insulated zones
Same application as Aludec, for use where noise
damping is important
®
Easyflex ducts
fixed flat oval
rigid
135x55mm
1 1
1 1
1 1
1 1
1 1
2 2
1 1
Smartzone
Application
recommends a maximum air
round
Ø125mm Ø80mm
1
1
1
1
1
1
1
®
round
1
1
1
-
-
-
1