Wiring - hager EK860 Mode D'emploi

3. Wiring

Smart Thermostat
The Smart Thermostat supports both 230 V and extra low voltage interfaces. The wiring
diagram on the back of the device shows the wiring for the relay operation. There are three
unlabelled isolated parking slots for unrequired wiring from the thermostat which is being
replaced. Three low voltage terminals for analog and bus connection are located on the far
right hand side of the Smart Thermostat.
Replacing a Relay Thermostat
COM and NO (and NC if present in the current thermostat) are to be con-
nected.
Any additional wires, such as a neutral wire are placed into the unlabelled
insulated
parking slots next to the relay terminals. They do not have any function other
park. slots
max. 230 V AC 6 (4) A
than safely parking individual excess wires
Replacement of a Thermostat with an Analog or Digital Interface
The analog output voltage "A", the negative voltage (GND) with "–" and the
positive supply voltage (Vcc) with "+" must be connected to the low voltage
connections on the right-hand side.
max. 36 V DC
An overview table on wiring the analog interfaces can be found on page 36.
P
When the Extension Box is installed, the Smart Thermostat acts as a wireless sensor and
P
remote control and does not have to be wired in.
Extension Box
The Extension Box has connectors for relays (labeled 1-4) as well as analog and digital inter-
faces (labeled A, –, +). Two relay wiring configurations are possible and are distinguished by
two different jumper positions.
z
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