11
ENGLISH
CAN CAN VFS2 VFS1
CAN CAN VFS2 VFS1
CAN CAN VFS2 VFS1
R3 R3I R2 R1 L N
-
V1 S5 S4 S3 S2 S1
V2
S6
+
R3 R3I R2 R1 L N
-
V1 S5 S4 S3 S2 S1
V2
S6
+
R3 R3I R2 R1 L N
-
V1 S5 S4 S3 S2 S1
V2
S6
+
S5
S4
CAVO CAN BUS
LATO SONDE E CONTROLLO
LATO
ALIMENTAZIONE
230 V
CAVO CAN BUS
AFS
S5
S4
LATO SONDE E CONTROLLO
LATO
ALIMENTAZIONE
230 V
AFS
S5
S4
LATO SONDE E CONTROLLO
LATO
ALIMENTAZIONE
230 V
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
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!
ELECTRICAL CONNECTIONS
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.
CAN BUS CABLE
CAN BUS CABLE
SENSOR AND CONTROL TERMINALS
230 V
POWER
TERMINALS
230 V
POWER
TERMINALS
230 V
POWER
TERMINALS
SENSOR AND CONTROL TERMINALS
SENSOR AND CONTROL TERMINALS
