6
en
2.2
Electrical connection
WARNING!
Electric shock!
Upon opening the housing, live parts are exposed!
Î
Always disconnect the controller from power supply
before opening the housing!
ATTENTIoN!
ESD damage!
Electrostatic discharge can lead to damage to electronic
components!
Î
Take care to discharge properly before touching
the inside of the device! To do so, touch a grounded
surface such as a radiator or tap!
Note:
Connecting the device to the power supply must always be the last step
of the installation!
Note:
The pump speed must be set to 100 % when auxiliary relays or valves
are connected.
The controller is equipped with 5 relays in total to which loads such as pumps,
valves, etc. can be connected:
Relays 1 … 4 are semiconductor relays, designed for pump speed control:
Conductor R1 … R4
Neutral conductor N (common terminal block)
Protective earth conductor
⏚
(common terminal block)
Relay 5 is a potential-free relay:
Connections to the R5 terminals can be made with either polarity.
Note:
For more details about the commissioning procedure see page 14.
Depending on the product version, mains cables and sensor cables are already
connected to the device. If that is not the case, please proceed as follows:
Temperature sensors (S1 to S9) have to be connected to the terminals S1 to S9
and GND (either polarity). The terminal S9 can be used as an impulse input for V40
flowmeters or as an input for FS08 flow switches.
A V40 flowmeter can be connected to the terminals S9 / V40 and GND (either
polarity).
upper fastening point
lower fastening point
cover
screw
Содержание BW/H Komfort HE
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