Rehau REH TA3, Инструкции

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© 2015 OJ Electronics A/S
2
Fig. 5
BR1025A05a
Mounting of floor limit sensor (fig. 6)
REH TD3: Floor limit sensor
Units with floor limit sensor have a mechanical jumper on the printed circuit
board allowing limits to be set for MIN. or MAX. temperature regulation. If set for
MAX., the limit setting will be 27°C. If set for MIN., the limit setting will be 17°C.
These temperatures are fixed when used with REHAU BA3 masters unless the
unit has been allocated to a zone group controlled by a REH CT3 room controller.
In this case, the limit settings can be increased or decreased via the room
controller. The limits then set will apply to all relevant room sensors with floor
limit sensor belonging to that group. If a REHAU FC-BMS3 master is used, the
limit settings can be changed using the programming buttons on the master.
Fig. 6
BR1026A04a
Jumper connected: max. limitation
Jumper removed: min. limitation
Jumper location, see fig. 5.
Max. temperature limitation is used to prevent the floor from becoming
too warm. This may be required if special floor surfaces (e.g. solid wood)
are used. The sensor should be positioned where it can read the true
temperature of the floor and should always be within the heated area.
Min. temperature limitation is used to keep the floor surface warm,
irrespective of room temperature. In tiled bathrooms or pool areas, for
example, water will dry more quickly if the floor surface is kept warm. The
sensor should be positioned where it can read the true temperature of the
floor and should always be within the heated area.
To ease replacement, we recommend that all floor sensors are mounted
in a tube positioned between two heating pipes. The inner end of the tube
should be sealed, and the floor sensor cable led back to the bottom of
the wall. If required, the sensor cable can be extended up to 30 m with
standard installation cable.
REH TM3: Use of external room sensor
A remote room sensor can be used instead of the built-in sensor by
connecting the jumper across the two-pin bridge on the printed circuit
board beneath the room sensor cover. From the factory, the jumper is
“parked” on one pin. Jumper location, see fig. 5.
Jumper connected: External room sensor
Jumper removed: Built-in room sensor
See the Installation Manual for further instructions.
Maintenance
The unit is maintenance free.
Keep the air vents (openings) on the unit clean and unobstructed at all
times.
Certifications
CE marking
REHAU Limited hereby declares that the product conforms with the following
Directives of the European Parliament and of the Council:
• CE marking: 1993/68/EEC
• EMC - electromagnetic compatibility: 2004/108/EC
• RoHS - restriction on the use of certain hazardous substances: 2011/65/
EU
• WEEE - waste electrical and electronic equipment: 2012/19/EU
Applied standard(s)
EN 61000-6-2, EN 61000-6-3
Disposal and recycling
Recycling of packaging
Protect the environment by disposing of the packaging in accordance with
local regulations for waste processing.
Disposal of the product
Equipment containing electrical components must not be
disposed of together with domestic waste.
It must be collected separately along with other electrical and
electronic waste according to local and currently valid legislation.
Technical Specifications
Purpose of control . . . . . . . . . . . . . . . . . . Wired electronic room sensor for controlling
hydronic floor heating and cooling
Connection type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-wire, 5 V, communication bus
Cable type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard installation cable ≥0.25 mm²
Cable length . . . . . . . . . . . . . . . . . . .Up to 300 m with max. 100 m between two units
Control principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PI or ON/OFF
Ambient operating temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0/+40°C
Floor limit sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Max. 30 m
Power drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <1 mA
Temperature adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4°C
Functions REH TA3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None
REH TM3, REH TD3. . . . . . . . Auto, comfort, setback, frost protection
Room sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal
Floor limit sensor
REH TA3, REH TM3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None
REH TD3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Incl. floor sensor
Mounting method. . . . . . . . . . . . . . . . . .For mounting direct on wall or in wall socket
Enclosure rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP 21
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H/86.0, W/86.0, D/25.5 mm