9
H4
5.7
8mm
0.2-1.5mm
2
MB 010 2T, MB 010 4T
A
MB 010 2T and MB 010 4T connections
-AB+
serial connection for wall-mounted remote
control WALL LCD (respect AB polarity)
H2**
hot water temperature probe 10kΩ
H4**
cold water temperature probe 10kΩ (648 only)
M1
DC inverter fan motor
S1
grill safety micro-switch
Y1
hot water solenoid valve (230V/ 50Hz 1A output
voltage)
Y2
cold water solenoid valve (MB 010 4T) or mobile
flap (MB 010 2T).
(230V/ 50Hz 1A output voltage)
L-N
230V/50Hz electrical power supply
BO
boiler consent output (free contact max 1A)
CH
chiller consent output (free contact max 1A)
CP
not used in this version
HRS
RS water probe (2kΩ) (MB 010 2T only)
AIR
Air probe optional (*)
RS
RS version cabling (MB 010 2T only)
*
Alternatively, connect the wall-mounted
controller WALL LCD to the air probe
**
If after switching the power on the board
detects the H2 probe, start-up occurs in normal
conditions with the minimum water temperature
when heating (30°C) and maximum when
cooling (20°C).
The board also has a function when there is no
probe, in such cases the fan stop minimum and
maximum thresholds are ignored.
Rigid or flexible wires with a 0.2 to 1.5 mm² cross-section
(0.75 mm² if two wires are connected to the same
terminal block) can be inserted in the 4 spring-loaded
terminal blocks (ref. A) for connection of the wall-mounted
controller WALL LCD. If the wires have wire end ferrules
with a plastic collar, the maximum cross-section is 0.75
mm².
Strip 8 mm of the wire, then if the wire is rigid, you can
insert it easily whereas, if it is flexible, it is advisable to use
long nose pliers.
Push the wire completely in and check that it is anchored
by pulling it gently.
To disconnect the cables, press the
corresponding white indent (ref. A) with a
screwdriver and remove the conductor.
EN
