Technibel MCW-B series Installation Instructions Manual page 18

D - Connections with automatic remote control - code 70250052
F
• 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
GB
mode).
• Control by action on the 230V "On/Off" valve (or on the ventilation control).
I
• 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.
E
"2-pipe Heating/Cooling + electric heating"
D
D1
GND
Regime switch
(Eco/Stand-by)
(if used)
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"
D1
GND
Regime switch
(Eco/Stand-by)
(if used)
8
MCW-BE
Control on a valve
Power supply 230V / 1 / 50Hz
70250052
L L
N N
Q1 4
Q2 3
Q3
2
Y11
Y21 1
B1 M B2
Valve
Change-over signal
(heating/cooling switching)
from a 70250053 sensor
or an external contact
Common
Air temperature sensor signal
(if used) 70250054
"2-pipe Heating/Cooling + electric heating"
Power supply 230V / 1 / 50Hz
70250052
L L
N N
Q1 4
3
Q2
Q3
2
Y11
Y21 1
B1 M B2
Change-over signal (heating/cooling switching)
from a 70250053 sensor
or an external contact
Common
Air temperature sensor signal
(if used) 70250054
("RCC 20")
"2-pipe Cooling + electric heating"
Regime switch
(Eco/Stand-by)
(if used)
Air temperature sensor signal
Note:
Position microswitch No. 8, located in the remote control, to
"ON".
MCW-BE
Control on ventilation
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".
MCW-BE
Control on a valve
Power supply 230V / 1 / 50Hz
70250052
L
N
Q1
Q2
Q3
D1
GND
Y11
Y21
B1 M B2
Valve
Shunt M and B2
Common
(if used)
70250054
L
N
4
3
2
1