Operation manual - EN
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EN - 266
ACD03/04
13. ROOM UNITS
ARU5 Room unit (sensor)
DESCRIPTION
The ARU5 room unit represents a passive sensor of room temperature supplied
as an accessory of the ACD03/04 electronic control unit. It measures room
temperature in such a way that the ACD03/04 electronic control unit could
perform optimizing of the heating (water temperature) for the given heating circuit.
Technical Data of the Room Unit
Sensing element: NTC 20 kΩ
Electrical parts protection: IP20
Protection against electric shock: III
Connecting terminals: electric wires of the 0,2 to 0,75 mm
2
Dimensions (WxHxD): 80x80x25 mm
Environment
Rooms: indoor
Operational temperature: -30 ÷ +60 °C
Storage temperature: -30 ÷ +50 °C
Humidity: 0 to 90 % relative humidity, non-condensing
ASSEMBLY
The ARU5 room unit is intended for fixing assembly on a wall by means of two screws (4x35) and
dowels (6x30) or on an installation box. The access to assembly openings and to the connection block
is possible after removing the front part of the box. It is necessary to process carefully in order to
prevent mechanical damages of the sensor.
PLACE OF THE ASSEMBLY
The wall unit must be placed at a height of approximately 1.2 to 1.5 m in a neutral place, i.e. to a re-
ference point for all rooms (heating circuit). It is advisable to choose one of the inner partition walls
of the coldest room of the stay during the day.
13. R
oom units
Содержание ACD 03
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