Mount the room thermostat on the conduit box. Do not mount on a wall in niches or bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the floor.
Mounting / 
dismounting |
Mount the room thermostat in a clean, dry indoor place without direct airflow from a heating / cooling device, and not exposed to dripping or splash water.
In case of limited space in the conduit box, use mounting bracket ARG70.3 to increase the headroom by 10 mm.
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| Wiring |
See Mounting Instructions enclosed with the thermostat.
M3171... [3], M3076.3 [3a]
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Comply with local regulations to wire, protection and earth the thermostat.
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Warning!
No internal line protection for supply lines to external consumers (Q1, Q2, Q3, Yxx)
Risk of fire and injury due to short-circuits!
Adapt the line diameters as per local regulations to the rated value of the installed overcurrent protection device.
The AC 230 V mains supply line must have an external circuit breaker with a rated current of no more than 10 A.
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Properly size the cables to the thermostat, fan and valve actuators for
AC 230 V mains voltage.
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Use only valve actuators rated for AC 230 V.
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Cables of SELV inputs X1-M/X2-M: Use cables with 230 V insulation, as the conduit box carries AC 230 V mains voltage.
Inputs X1-M or X2-M of different units (e.g. summer/winter switch) may be connected in parallel with an external switch. The maximum contact current rating for the external switch should fulfill the overall sensing current of all connected inputs.
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KNX communication cables (input CE+ / CE-): Use cables with 230 V insulation, as the conduit box carries AC 230 V mains voltage.
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Disconnect from supply before opening the cover.
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When a KNX bus power supply is connected on the line with communicating thermostats and Synco controller, the internal KNX power supply of the Synco controllers must be switched off.
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