Installation; Air Distribution System; Sound Insulation - Dimplex Dhw 300Vd+ Montage- Und Gebrauchsanweisung

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4.2 Installation

 Remove the three transport restraint screws (M12 - fixing
the device to the pallet) from the bottom of the pallet.
 Remove the pallet and mount the three M12 supporting feet
(in the plastic bag attached to the cylinder pipe nipple).
 Position the domestic hot water heat pump and align it verti-
cally by adjusting the device feet. Then tighten the counter
nuts on the device feet.
ATTENTION!
The ventilation unit and the corresponding disconnecting device for the
power supply must be freely accessible at all times.
NOTE
The air circuit of all air inlets and outlets, as well as overflow passages,
must not be obstructed, covered or sealed. Settings carried out by the
technician must not be changed.
It must be possible to shut off combustion air lines and exhaust
gas systems of fireplaces that depend on room air to ensure
fault-free operation of the ventilation unit.
ATTENTION!
Special requirements apply for simultaneous use of ventilation systems
and fireplaces. Country-specific and regional rules and regulations must
be observed. Early consultation with the relevant chimney sweep is
strongly recommended!

4.3 Air distribution system

The air distribution system is connected on the device. An extract
air duct connects the ventilation unit with the external wall vent or
roof hood. An exhaust air duct connects the ventilation unit with
the air distribution system and with the valve or ventilation grille.
NOTE
The air duct system must be sized and planned according to the
requirements of the building and the selected ventilation unit (see
chapter System design).
An incorrectly sized or incorrectly installed air duct system can result in
inadequate ventilation or increased odour problems, draughts and
excessive energy consumption. Country-specific and regional rules and
regulations must be taken into consideration and observed.
NOTE
Extractor hoods and vented tumble driers must not be connected to the
domestic ventilation unit! It is advisable to use extractor hoods with air
circulation and condensing tumble dryers.
EN-8
4.3.1 Thermal insulation air distribution
system
The ventilation unit and air distributor must be installed within the
thermally insulated building shell.
NOTE
To prevent condensate formation, extract air ducts must be sealed
completely air-tight at both sides and over the entire route between the
ventilation unit and air inlet/outlet with a sufficiently strong steam-
resistant thermal insulation! When using a ventilation hose with multiple
layers, the outer shell in particular must be masked off so it is air-tight!
The temperatures in the duct are approximately the same as the outside
temperature level.
Exhaust air ducts must also be fitted with thermal insulation to
prevent heat losses if they pass through unheated areas or areas
with limited heating.

4.3.2 Sound insulation

Install sound-damping ventilation hoses or sound dampers in the
exhaust air duct and in the extract air duct. Flexible air hoses
must be installed in an accessible location for cleaning or re-
placement.
To prevent vibration transmission from the ventilation unit to the
duct system, connect all air ducts flexibly to the ventilation unit.
When installing mountings, clips, brackets and other duct mount-
ings, sound-damping measures should be used where applica-
ble. Wall or ceiling openings must be filled and sealed with suita-
ble material. If ventilation ducts are installed in the insulation
layer under the screed, suitable vibration decoupling and impact
sound decoupling measures must be used (e.g. insulation strips
under the ventilation pipe).
The sound transmission from adjoining rooms (transmitted
sound) is suppressed with a star-shaped set-up of the air duct
system.
4.3.3 Air inlets and air outlets
The extract air are routed through external wall grilles or roof
cover, the positioning of which must factor in sunlight, the direc-
tion of the weather and prevailing wind, snow levels and other ex-
ternal influences.
Arrange air outlets and inlets in the room such that a good flow of
air through the room is ensured. Position ventilation valves on
the ceiling or in the top part of walls and take into account the
subsequent position of the furniture (particularly seats and beds,
in order to prevent perceived draughts).
Hallways are overflow areas through which air flows from supply
air rooms to exhaust air rooms. Air overflow vents must be pro-
vided to ensure unobstructed overflow. These can be imple-
mented by means of gaps beneath doors or ventilation grilles.
451905.66.07 · FD 9908
DHW 300VD+
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