Technibel CWX series Aufstellungs- Und Bedienungshandbuch Seite 20

D - Temperature sensor accessories
Important:
- With the controller probe inputs (B1-M and B2-M) being connected to the 230 V, use cable which satisfies the
corresponding insulation requirements.
GB
- Maximum connection length: 10 m with 1.5 mm
- To avoid electromagnetic disturbance, do not route sensor connection next to power cables.
• Temperature probe (bare) for remote control "RCC" - code 70250053
- Type CTN 3 kΩ at 25°C.
- IP 65 - c. II.
- 2 possible uses:
- Change / over sensor (heating / cooling switch) for the units 2-pipe heating and cooling:
Use a retaining clip to secure this sensor to part of the piping representative of the water temperature in the system.
Use thermoconductive paste and cover the sensor with insulation (not supplied) to ensure that the true temperature
is recorded.
- Air temperature sensor:
The thermostats operate according to the ambient air temperature measured internally or according to the
temperature indicated by the external sensor (switching takes place automatically as soon as the external sensor is
connected).
Control connection as per the following diagrams.
Important: If an air recirculation sensor is installed in the unit, the fan must operate on a permanent basis
(mandatory valve).
• Box-mounted air temperature probe for remote control "RCC" - code 70250054
- Type CTN 3 kΩ at 25°C.
- IP 30 - cl. II.
- Air temperature sensor:
The thermostats operate according to the ambient air temperature measured internally or according to the
temperature indicated by the external sensor (switching takes place automatically as soon as the external sensor is
connected).
Control connection as per the following diagrams.
E - Special features of the remote control "RCC" - code 70250051
• Change / over (heating / cooling switch)
- Instead of the temperature sensor, a potential-free
external contact (not supplied) can be connected, the
closing of which causes the thermostat to switch to
cooling mode and the opening causes it to switch to
heating mode.
- The same contact can control up to ten controls by
connecting in parallel the sensor inputs (B2-M) of the
various thermostats.
Important:
- The 230V power supply of the controls
connected in this manner must come from the
same source. The polarities must be strictly respected.
- Maximum total connection length: 80 m with 1.5 mm
- As the sensor inputs are connected to 230V, use a contact and cable which satisfy the corresponding
insulation requirements.
- To avoid electromagnetic disturbance, do not route this connection next to power cables.
• Mode switch Eco / Stand-by:
- The same external contact (not supplied) can control up
to ten controls by connecting in parallel the
corresponding inputs (D1 - GND) of the various
thermostats.
Important:
- The 230V power supply of the controls
connected in this manner must come from the
same source. The polarities must be strictly
respected.
- Maximum total connection length: 80 m with 1.5
mm 2 .
- To avoid electromagnetic disturbance, do not route this connection next to power cables.
8
2 .
M B2
2.
D1 GND
M B2 M B2 M B2
10 controls maximum
D1 GND D1 GND D1 GND
10 controls maximum