F
GB
I
E
D
9
2
3
5
6
4
20
21
21
7
22
23
8
9
1
70250052
L
N
Q1
Q2
Q3
M B2
B1
D1
TERMINAL
UNIT
Heating valve
Cooling
valve
Common
CWX
"4-pipe"
Note:
Position microswitch No. 8, located in the
remote control, to "ON".
E - Temperature sensor accessories
• Important:
- The sensor inputs (B1-M and B2-M) of the controls being connected to the 230V, use cable which satisfi es
the corresponding insulation requirements.
- Maximum connection length: 10 m with 1.5 mm
2
.
- To avoid electromagnetic disturbance, do not route sensor connection next to power cables.
•
Temperature sensor (bare) for remote controls "RCC" - code 70250053
- Type CTN 3 k
Ω
at 25°C.
- IP 65 - cl. 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)
• Air temperature sensor in box for remote controls "RCC" - code 70250054
- Type CTN 3 k
Ω
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.
2
3
5
6
4
20
21
21
7
22
23
8
9
1
70250052
L
N
Q1
Q2
Q3
M B2
B1
D1
UNIT
TERMINAL
Electric heating
control
Cooling
valve
Shunt
M and B2
Common
Air temperature sensor signal (if used)
Regime switch (Eco/Stand-by)
(if used)
CWX
"2-pipe C electric heating"
Note:
Position microswitch No. 8, located in the
remote control, to "ON".
Terminal strip
X4 "VALVES"
Terminal strip
X2 "CONTROL"
Air temperature sensor signal (if used)
Regime switch (Eco/Stand-by)
(if used)
Terminal strip
X4 "VALVES"
Terminal strip
X2 "CONTROL"
Shunt
M and B2
