Data Sheet for Product

8
Siemens
A6V12005486_en--_c
Smart Infrastructure
2021-05-17
Mounting and installation
● Mount the room thermostat on a recessed square conduit box with 60 mm fixing centers.
● 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.
● Mount the room thermostat in a clean, dry indoor place without direct airflow from a heat-
ing / 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.
● See Mounting Instructions A6V12060783 enclosed with the thermostat.
● Comply with local regulations to wire, protect and earth the thermostat.
● The device has no internal fuse for supply lines to fan and actuators. To avoid risk of
fire and injury due to short-circuits, the AC 230 V mains supply line must have a circuit
breaker with a rated current of no more than 10 A.
● Properly size the cables to the thermostat, fan and valve actuators for AC 230 V
mains voltage.
● Use only valve actuators rated for AC 230 V.
● Adapt the wiring cross section for power supply (L, N), and 230 V outputs (Yx-N) to
the preceding overload protection elements (max 10 A) under all circumstances. Comply
with local regulations under all circumstances.
● Cables of SELV inputs S1 (X2)-M / B1 (X1)-M: use cables with min 230 V insulation,
as the conduit box carries AC 230 V mains voltage.
● Inputs S1 (X2)-M / B1 (X1)-M: several switches (e.g. summer/winter switch) may be
connected in parallel. Consider overall maximum contact sensing current for switch rat-
ing.
● Selectable relay function: Follow the instructions in Basic documentation A6V12114068
to connect external equipment to the relay outputs.
● Isolate the cables of Modbus communication input A+, B- and REF for 230 V.
● Disconnect thermostat from power supply before removing from the mounting plate.
● The device does not support hot-plug.
Mounting
Wiring