Duct Connection, Duct Insulation - Iloxair ILOX 129 Installation, Operation And Maintenance Manual

14

DUCT CONNECTION, DUCT INSULATION

Note! During installation, the instructions regarding unit installation and duct insulation must be adhered to without deviation.
Otherwise, there is a risk of condensation and moisture resulting in major damage.
DUCT CONNECTION
Exhaust air from the unit may only be connected to a ventilation duct
intended for this purpose. Connection must not be made to a smoke or
gas flue. In case of extract air ventilation in premises where a smoke
or gas flue is used (for instance, an open fireplace or heating stove),
an adequate supply air flow must be ensured A kitchen flue must be
installed in accordance with applicable regulations.
DUCT INSULATION
In order for the installation of the unit to be effective, it is crucial that
the installation of the ventilation ducts in the unit, as well as the instal-
lation of ducts through external walls containing insulation and vapour
barriers, roofs and joists, is executed in a professional manner. Other-
wise there is a risk of condensation, resulting in moisture damage.
If older units are replaced, it is also necessary to inspect ducts and
duct insulation for damage and ensure they are of adequate quality.
Supply air ducts (T) and extract air ducts (F), i.e. ducts containing warm
air, which are located in unheated spaces, must be insulated. The insu-
lation should be installed externally and have a windproof surface layer.
Outdoor air ducts (U) and exhaust air ducts (A), i.e. ducts filled with cold
air, which are located inside the building's vapour barrier, must be in-
sulated and have a diffusion-proof (moisture-proof) surface layer. Given
the high degree of heat recovery achieved by the unit, the exhaust air
also gets very cold and must be thermally insulated. Moreover, ducts
which run alongside each other must have a common vapour barrier.
Ducts between the cooker hood, if fitted, and the unit and exhaust air
duct are to be regarded as kitchen flues. This means that particular
measures must be taken; see the table below.
For the designations of the various ducts, see "Duct definitions" on the
next page.
RECOMMENDED INSULATION AND VAPOUR BARRIERS FOR DIFFERENT TYPES OF DUCTING
Ducting type
Exhaust air (flue)
Sheet metal, accessible for
In kitchen
Between joists and in attic
Exhaust air (no flue)
Between joists and in attic
From tumble dryer
Outdoor air
Sheet metal, accessible for
In kitchen
Between joists and in attic
Supply air
Sheet metal
Extract air
All figures in this table are recommended values which apply in central Sweden. Please check for local variations.
FläktGroup DC_10201GB_20190207_R2
Approved material and Duct in a warm space
location
Armaflex AF3, 19 mm
inspection
Sheet metal Fire protection E15,
mesh mat 30 mm
Sheet metal Mineral wool 25 mm
Sheet metal Mineral wool 30 mm
Sheet metal Mineral wool 30 mm
Armaflex AF3, 19 mm
inspection
Sheet metal Mineral wool 60 mm
No requirements
Heat Recovery Unit ILOX 129 - Installation, Operation and Maintenance
DUCTS IN WARM SPACES (INDOORS)
The temperature of the air
in the duct is above +10 °C
Supply air ducts (T)
Extract air ducts (F)
No insulation
DUCTS IN COLD SPACES
Fuktspärr
Supply air duct (T)
Extract air duct (F)
Vapour barrier
Fuktspärr
DUCTS IN LOOSE WOOL
Vapour
Insulation barrier
Yes
Yes
Yes
Yes
No
Yes
Yes
The temperature of the air
in the duct is below +10 °C
Fire protection
wired mat 30 mm with moisture-proof
surface layer
Fuktspärr
Outdoor air duct (U)
Exhaust air duct (A)
Fuktspärr
Fuktspärr
Vapour barrier
Skivan ska bindas
fast vid kanalen.
Min tjocklek 10 cm.
Fuktspärr
Fuktspärr
Takstol
Takstol
Fuktspärr
Duct in a cold space Insulation
–
Fire protection E15,
mesh mat 50 mm
–
Mineral wool 30 mm
Mineral wool 100 mm
–
Inside building's vapour barrier
Mineral wool 60 mm
Mineral wool at least 80 mm
or equivalent.
We reserve the right to make changes without prior notice
Outdoor air duct (U)
Exhaust air duct (A)
Supply air duct (T)
Extract air duct (F)
The sheet must be bound
Skivan ska bindas
tightly to the duct.
fast vid kanalen.
Min tjocklek 10 cm. Minimum thickness 10 cm.
Vapour barrier
Fuktspärr
Vapour barrier
Fuktspärr
Skivan ska binda
fast vid kanalen.
Min tjocklek 10
Fuktspärr
Vapour barrier
–
Takstol
Fuktspärr
Only inside
building's vapour barrier
–
Yes
No
–
Only inside
building's vapour barrier
No