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INSTALLATION
Installation
5.9.9 Connecting the external programming unit
Note
Check whether the room in which the external program-
ming unit is installed receives a lot of warmth, for ex-
ample sunlight. If it is warmed from outside, the device
might regulate the flow temperature downwards. As a
result, the temperature in other rooms may be lower
than desired.
With an external programming unit, you can switch all appliance
functions and make all settings from the living space. In addition,
the external programming unit captures the room temperature.
If required, this value influences the heating curve. With this, you
can reduce the heating curve if the set room temperature in the
lead room, i.e. the room where the programming unit is installed,
is exceeded (for example through insolation or a wood stove).
The weighting of the room influence is set using the "ROOM INFLU-
ENCE" parameter ("SETTINGS/ HEATING/ HEATING CURVE HC1")
or via the direct line (parameters P15 and P18).
D0000038971
GND/CAN-L/CAN-H/+Ub Bus cable connector for external programming unit
Connect the external programming unit with a BUS cable
typeJ-Y(St)2x2x0.8mm²to terminal X5 (GND/CAN-L/CAN-
H/+Ub). The BUS cable should not be longer than 50m.
Note
Observe correct separation when installing the BUS cable,
the mains power cable and the sensor leads.
5.9.10 Safety temperature controller for underfloor heating
system
!
Material losses
In order to prevent excessively high flow temperatures in
the underfloor heating system in the event of a fault, we
always recommend using a safety temperature controller
to limit the system temperature
5.10 Fitting the appliance casing
5.10.1 Installing front panel and cover of the cylinder module
On the cylinder module, undo the screw set into the r.h. side
of the front panel. You will use this screw later to secure the
front panel on the fascia frame.
Hook the front panel of the cylinder module into the hooks
on the cylinder module frame.
Turn the screw to secure the front panel into the hole provid-
ed in the fascia frame.
Place the cover onto the cylinder module so that the la-
bels with the terminal designations are located behind the
terminals.
Secure the cylinder module cover with screws.
5.10.2 Installing front panel of the function module
Attach the lower front panel of the function module using
screws.
Close the function module door and lock it.
5.10.3 Mounting the programming unit
26_04_01_0619_
Position the programming unit from the front in the opening
of the fascia.
Then fit the frame at the back of the fascia together with the
programming unit, until the programming unit clicks into
place in the frame.
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