6.7.1 Insulation against condensation
Property damage
When warm air meets cold surfaces, condensation
can result.
u For outdoor air and exhaust air ducts, use vapour
proof thermally insulated pipes.
u In unheated rooms, insulate the supply and ex-
tract air ducts.
6.7.2 Connecting air ducts to the appliance
u Make an airtight connection between the air duct and the
appliance, e.g. with a twin nipple.
6.7.3 Sound reduction
u To prevent structure-borne sound transmission, ensure a
flexible connection between the appliance and the air duct.
u To minimise noise from the appliance, fit silencers to the
supply air and extract air ducting in the immediate vicinity
of the appliance.
u To prevent sound transmission in the air ducting, fit inline
silencers at appropriate points in a sequential distribution
system or, in a star distribution system, on individual
spokes of sufficient length.
u To keep the noise level low, design the system to keep the
air flow rate per fan as low as possible. If necessary, install
several fans each with their own inlet ducts.
6.7.4 Overflow apertures
Living rooms and bedrooms are only supplied with air. Air is
only extracted from rooms where odours and moisture are gen-
erated. Ensure an unimpeded overflow and consequently air
balancing.
u Fit ventilation grilles in internal doors or walls, or increase
the air gap below the door to ≥ 8 mm to ensure an unim-
peded air flow.
6.7.5 Cleaning apertures
u Fit cleaning apertures when installing the air ducts, so that
the air ducts can be inspected and cleaned at regular inter-
vals.
Cleaning apertures such as those on air distributors must be ac-
cessible for regular cleaning.
6.7.6 External wall outlets
u Position the air intakes on the building such that the air
drawn in is not heavily polluted. Avoid drawing in dust,
soot, odours, flue or exhaust gases, microorganisms and
ash.
u Prevent short circuits between exhaust air and outdoor air.
Position the external wall outlets and intakes around a
corner from one another. If the outdoor air intake and the
exhaust air outlet are on the same side of the building,
there must be a minimum of 2 m between them. If this is
impossible, create a separation between the air streams,
e.g. by means of a separating wall or shrubs between the
outdoor air intake and exhaust air outlet.
u Never install the apertures facing towards neighbouring liv-
ing room or bedroom windows.
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6.7.7 Supply and extract air vents
For living space, supply and extract air vents are provided for
installation in a wall or ceiling.
In kitchens, install the extract air vents as far as possible from
the cooker hob.
Supply air and extract air vents must be installed and set up in
accordance with the manufacturer's instructions.
6.8
Electrical connection
Overvoltage
Overvoltage can cause damage to the appliance, and
may destroy it.
u Ensure that the voltage specified on the type
plate conforms with the mains power supply.
6.8.1 Safety equipment for stove/fireplace operation
u Install safety equipment that will interrupt the power supply
to the appliance if required.
6.8.2 Connections in the control panel
When routing the power cable, ensure a watertight fit where it
passes through the cable grommet.
The control panel cover is on the upper side of the appliance.
u Undo the screws of the control panel cover.
u Carefully lift up the control panel cover.
u Drill or break open one of the pre-marked apertures on the
control panel cover.
u Slide a threaded cable gland over the cable to provide a
seal.
u Fix the cable gland to the control panel cover.
u Connect the cable in accordance with the wiring diagram.
See chapter Wiring diagram [} 65] .
0–10 V input
You can control the appliance via this input. See parameter
"0-10 V input" in chapter "Settings" menu [} 56] .
X19.1
+5 V
X19.2
GND
Intensive ventilation switching contact
You can connect a floating switching contact, the actuation of
which switches the appliance to intensive ventilation. You can
set the runtime for intensive ventilation in parameter "Intens.
vent. time". After this time has expired, the unit switches back to
its previous state.
u Connect the external pushbutton to the terminals.
X20.1
+10 V
X20.2
GND
External programming unit 1 / 2, external heating coil,
connectivity
X121
SDA
X122
+5 V
X123
GND
X124
SCL
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