Connection Cables; Electrical Connections - Olimpia splendid SHEPRA TOWER S2 Instructions Pour L'installation, L'emploi Et L'entretien

To access the terminal blocks for electrical connections of the internal unit, proceed as follows:
a. Remove the cover of the electric panel as described in the corresponding paragraph.
To access the terminal blocks for electrical connections of the external unit, remove the panel of the right side.

3.4.2 - Connection cables

The following table lists the cables which must be used.
A UE/UI communication cable
B DHW probe and external air cable
Internal unit
C Power cable
External unit
D Power cable

3.4.3 - Electrical connections

Carry out the connections of the cables listed in the previous paragraph to the terminal blocks of the internal
and external units referring to fig. 19, 20, 21, 22 as described below.
Wiring diagram legend (Fig.22)
Ref. Description
1 Input for remote control COOLING ON (use free contact, close on L to activate)
2 Input for remote control HEATING ON (use free contact, close on L to activate)
3 Input for remote control ECO (use free contact, close on L to activate)
3W 3-way valve control output
4 Input for remote control NIGHT (use free contact, close on L to activate)
5 Remote control common inputs (connected N)
8 Input from SMART GRID or photovoltaic FTV1 (use free contact, close on L to activate)
9 Input from SMART GRID or photovoltaic FTV2 (use free contact, close on L to activate)
14 15 External heat source activation (free contact 3A 250VAC output)
16 17 Alarm activation (free contact 3A 250VAC output)
24 25 External air temperature sensor
26 27 Domestic water accumulation temperature sensor
A B Communication port RS485 for domotic SIOS CONTROL
C1 Domestic hot water compressor condenser
CAN Not available
DHW Input for remote control SANITARIO (use free contact, close on L to activate)
EH1 Electric heater 1
3 x 0,5 mm screened, suitable for data transmission (LiYCY
2
type or equivalent)
H03RN-F 2 G 0,5 / H03VV-F 2 G 0,5
SHERPA TOWER S2 BIG
3 X H07V-K 4 mm
S2 12 S2 14 S2 16
H07RN-F H07RN-F H07RN-F
3 G4 3 G4 3 G4
2
S2 12T S2 14T S2 16T
H07RN-F H07RN-F H07RN-F
5 G2,5 5 G2,5 5 G2,5
EN - 19
TOWER BIG