Technibel MCW 1 B 5B, Installation Instructions Manual, Page: 18 / 52

8
F
GB
I
E
D
70250052
N
L L
N
Y11
Y21
3
4 Q1
Q2
Q3
2
1
M B2 B1
D1
GND
TERMINAL UNIT
D - Connections with automatic remote control - code 70250052
("RCC 20")
• For MCW-BE ("2-pipe + electric heating").
•
Automatic switching of the operating mode, by sensor or external contact.
• Note: If the control is to operate only in cooling mode, shunt terminals M and B2 (otherwise the unit will remain in heating
mode).
• Control by action on the 230V "On/Off" valve (or on the ventilation control).
• Permanent or slaved ventilation.
• Mode change possible (Eco or Stand-by) by external contact.
• For all technical information concerning the operation of this controller, consult Technical Instructions No. 10 12 152.
MCW-BE
"2-pipe C electric heating"
Control on a valve
MCW-BE
"2-pipe Heating/C electric heating"
Control on a valve
Valve
Regime switch
(Eco/Stand-by)
(if used)
Power supply 230V / 1 / 50Hz
Change-over signal
(heating/cooling switching)
from a 70250053 sensor
or an external contact
Common
Air temperature sensor signal
(if used) 70250054
Note:
Electric heating is provided for to operate as back-up for the
water exchanger in heating mode.
The electric heating can also be activated in cooling mode
("mid-season" heating). To do this, position microswitch No. 8,
located in the remote control, to "ON"
70250052
N
L L
N
Y11
Y21
3
4 Q1
Q2
Q3
2
1
M B2 B1
D1
GND
TERMINAL UNIT
Regime switch
(Eco/Stand-by)
(if used)
Power supply 230V / 1 / 50Hz
Valve
Common
Air temperature sensor signal
(if used)
70250054
Shunt M and B2
Note:
Position microswitch No. 8, located in the remote control, to
"ON".
MCW-BE
"2-pipe Heating/C electric heating"
Control on ventilation
70250052
N
L L
N
Y11
Y21
3
4 Q1
Q2
Q3
2
1
M B2 B1
D1
GND
TERMINAL UNIT
Regime switch
(Eco/Stand-by)
(if used)
Power supply 230V / 1 / 50Hz
Change-over signal (heating/cooling switching)
from a 70250053 sensor
or an external contact
Common
Air temperature sensor signal
(if used) 70250054
Note:
With the control being on the fan, set micro-switch
n
°
1, located inside the remote control, to "ON".
Important:
In this case, electric heating in cooling mode is
not authorized and micro-switch
n
°
8, located
inside the remote control, must be set to "OFF".