Atmos
Heating Systems
Installation and user manual EN_FMT
16
When using a modulating thermostat, the plug on the
printed circuit board must be connected with the correct
polarity.
To reach the printed circuit board, the black casing must be
opened. Connect the plug for the relevant modulating
space unit to terminal a, b or c, according to the following
photograph.
a White Connection for an on/off
room thermostat
24 Volt
b Red
Connection for RS30 with
Coopra protocol
EBV space
regulation
c Blue
Opentherm connection
Honeywell or TEM
space regulation
3.5.3. Connection for the external temperature sensor
(if applicable).
Connect to terminals (3) and (4)
If an external sensor is connected, this temperature sensor
must be an NTC with a resistance of 12 kOhm at 25°C.
Strip about 5 mm off the insulation of the wires of the
sensor. Stick the stripped ends of the wires into
connections (3) and (4) of the connection block, see figure
8. Make sure that the wires do not make a short circuit.
Firmly tighten the screws in the connection block.
If an external sensor is not used, terminals (3) en (4) can
remain open.
3.6. Assembling the connection block
Connect the green
connection block in the
green socket.
3.7. Placing the jacket
Place the jacket in the appropriate hooks at the top of the
unit. Let the jacket pivot until it falls over the unit. Tighten
the fastener at the bottom of the jacket.
b
a
c