Electrical Connections - Riello 20083501 Manual

CAVO CAN BUS
CAN BUS CABLE
CAN CAN VFS2 VFS1
ALIMENTAZIONE
SENSOR AND CONTROL TERMINALS LATO SONDE E CONTROLLO
+ S6 V2 V1 S5 S4 S3 S2 S1 - R3 R3I R2 R1 L N
S5
S4
AFS
Max. low voltage 12 VAC / DC
Terminal: Connection for:
S1 Recirculation
S2 Cold water sensor
S3 Primary flow rate (optional)
S4 Storage cylinder top sensor
S5
V1 Primary pump PWM signal
V2 0-10V/PWM signal (optional)
S6 Primary return (optional)
- Cold water draw-off sensor
VFS2 optional
The cascade of ACS 40 E DHW mixers is controlled electronically by the control units. The various mixers in the cascade
are connected via a CAN bus cable between their control units.
- Unscrew the screw at the bottom of the front cover and open the control unit.
- Plug the CAN bus cable into the connector in the control unit (see terminal diagram).
- Fit terminating jumpers to the start and end connectors in the first and last DHW mixers in the cascade.
- Connect the various control units with the CAN bus cable provided.
- Connect the solenoid valve in the cold water inlet pipe to each DHW mixer to relay 3 in the power terminals of the mixer's
control unit.
- Connect the recirculation pump to the first mixer in the cascade, connecting the power cable to relay 2 in the power
terminals and connecting the control cable to control terminal V2.
Procedure for recognising the CAN bus cable and activating the cascade function:
- Switch on the control unit.
- When the display lights up, press ESC key for 10 seconds.

ELECTRICAL CONNECTIONS

LATO
CAN CAN VFS2 VFS1
230 V
POWER
TERMINALS 230 V
SENSOR AND CONTROL TERMINALS LATO SONDE E CONTROLLO
+ S6 V2 V1 S5 S4 S3 S2 S1
S5
S4
CAVO CAN BUS
CAN BUS CABLE
LATO
CAN CAN VFS2 VFS1
230 V
ALIMENTAZIONE
POWER
TERMINALS 230 V
SENSOR AND CONTROL TERMINALS LATO SONDE E CONTROLLO
- R3 R3I R2 R1 L N + S6 V2
AFS
Power terminals 230 VAC 50-60 Hz
Terminal: Connection for:
L Mains power, phase L
N Mains power, N
R1 Primary circuit pump
R2 Relay 2 (recirculation option)
R3 Relay 3 (normally open)
R3I Relay 3 (normally open)
The earth wire must be connected to the metallic PE
terminal!
11
LATO
230 V
ALIMENTAZIONE
POWER
TERMINALS 230 V
V1 S5 S4 S3 S2 S1 - R3 R3I R2 R1 L N
S5
S4
AFS