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The devices must be of a sufficient rating to compensate
for heat losses in the room.
Installation Notes
Combustible materials or liquids and other highly flammable
furnishings must be kept away from the heater.
The heater must not be operated in very dusty areas.
Installation Preparation
Remove packaging material.
Unscrew the four fixing screws from underside of device
(see figure 2) to remove casing cover.
Store the casing cover so that it cannot be damaged
during installation.
Fixing to the wall
For drywalls, use suitable fixing material (not supplied).
Draw and drill four holes on a sturdy wall as shown in
figure 5. All dimensions are in mm.
Insert dowels and pre-fit the two top screws (don't
completely screw in yet).
Hang device on the two top screws.
Insert and tighten the two bottom screws, then tighten the
two top screws.
Hydraulic connection
To ensure a sufficient heating water flow rate through the fan
convectors, please observe the following points:
The devices are not suitable for installation in a single-
pipe system.
The nominal width of the connection pipe must have a
minimum inner diameter of 15 mm.
If the devices are installed in a heating system with
various heat distribution systems (e.g. under floor
heating), a separate circuit is required to guarantee a
sufficient water flow rate.
For optimum operation (heat output) of the fan convectors, a
hydraulic balance is required on the heating system. Figure 6
shows the various hydraulic connection options on the
device.
The recommended flow and return connections are
shown in figure 5
The heating pipes can be laid in the floor or in the wall. The
device is supplied with two copper pipes with a diameter of
15 mm that are fitted on the heat exchanger at the factory.
Before and during filling of the heating system, all pipe
connections must be checked for leaks. During filling, the
bleeder valve (see figure 5) must be opened so that air can
escape from the device. If necessary, bleed again following
commissioning (circulating pump running).
Electrical connection
WARNING: The device must be grounded
WARNING: Phase conductor (brown) and neutral
conductor (blue) must not be swapped as this may cause
malfunctions.
The electrical connection should have a supply voltage of
~110 - 240V, 50 - 60Hz.
The device must be installed by a qualified electrician in
compliance with the existing standards and local installation
guidelines.
Before performing installation, ensure that the power supply
is switched off.
The device is equipped with a flexible 1 m connection cable
(4 x 0.75 mm
2
), which can be used to connect the heater
directly to the power supply via a suitable wall socket.
Disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules and include a suitable
isolator. The isolator should have a contact opening width of
at least 3mm on each pole and must provide full
disconnection in overvoltage category III conditions.
Conductor configuration of the connection cable:
Brown: 'L' – supply voltage phase conductor
Blue: 'N' – supply voltage neutral conductor
Green/Yellow: 'PE' grounding conductor
Black: control conductor (temperature reduction; on/off)
For circuit diagram, see figure 8.
Pilot (Control) Wire
Activating the black pilot (control) wire allows you to lower the
set target temperature on the device using an external timer
or switch. Any reductions in temperature will be forwarded to
downstream devices via the control wire. When a
programming cassette is plugged into the master unit
appliance and is operating, the control signals will also be
forwarded to any downstream devices via the control wire.
See figure 8 for more detail. When taking out of service, e.g.
for maintenance work, ensure that both the mains supply and
the control conductor are disconnected from the power
supply, as this may result in external voltage (via a timer
contact or pilot device with programming cassette).
WARNING: If you switch over to controlled operation, the
mains voltage is on this conductor!
WARNING: Do not ground the control conductor
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