10
S
I
U
2.8
8mm
0.2-1mm
2
+ A B -
ESE645, ESE648
A
H2
H4
AIR
N540022B
ESE645 and ESE648 connections
+AB-
serial connection for wall-mounted remote
control EDA/EDB649 - EWG/EWW649
(respect AB polarity)
H2**
hot water temperature probe (10 kΩ)
H4**
cold water temperature probe (10 kΩ) (648 only)
M1
DC inverter fan motor
Y1
water solenoid valve (230V/ 50Hz 1A output
voltage)
Y2
4 pipe water solenoid valve (ESE648) or mobile
flap (ESE645).
(230V/ 50Hz 1A output voltage)
L-N
230V/50Hz electrical power supply
BO
boiler consent output (free contact max 1A)
UV
UV lamp connection
CH
chiller consent output (free contact max 1A)
HRS
RS water probe (10 kΩ) (ESE645 only)
AIR
Air probe optional (*)
RS
RS version cabling (ESE645 only)
*
Alternatively, connect the wall-mounted controller
EDA/EDB649 - EWG/EWW649 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 mm² cross-section
(0.75 mm² if two wires are connected to the same terminal
block) can be inserted in the 4 terminal blocks (ref. A) for
connection of the wall-mounted controller EDA/EDB649
- EWG/EWW649. 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.
