88
ATTENTION: Communication will occur
only with the MASTER boiler, (boiler with
PAR 15 = 0), interpreting the cascade as
a single heat capacity generator:
P
CASCADE
= P
BOILER
x No.
BOILERS
.
To install the second board, proceed as fol-
lows:
- Remove the cover and electrically connect
the second RS-485 board equipped with lid
to the RS-485 board already installed in the
MASTER boiler (boiler with
PAR 15 = 0
) with
the wired connector provided in the kit.
CAUTION: Insert the wired connector with
caution.
- Set the DIP SWITCH of the new board in
MODBUS mode.
- Close the lid of the second board.
- Choose the communication configuration
suited to the MODBUS network (PAR 17
INST) according to
Table PAR 17 INST
.
RS-485 connection to the INSOL/ZONA
MIX (fig. 4/e)
The RS-485 board can be connected to
optional INSOL kit code 8092254 or ZONA
MIX code 8092252. Both require the
board housing kite code 8092236.
Carry out the electrical connections as indi-
cated in the figure.
CAUTION: For electrically connecting the
INSOL/ZONA MIX board to the boiler
board, refer to the instruction leaflet pro-
vided in the kit.
2.1.2
Anti-freeze function
The boilers are equipped with anti-freeze
function which activates the pumps and the
burner when the temperature of the water
contained inside the appliance drops to
below 6°C. The anti-freeze function is ensu-
red, however, only if:
- the boiler is correctly connected to the
gas and electricity supply circuits;
CN10
COMUNICAZIONE
MODBUS
MODBUS
COMMUNICATION
CONNETTORE CABLATO
(cod. 6319173)
WIRED CONNECTOR
(cod 6319173)
1
23
45
6
Fig. 4/d
INSTALLER PARAMETER SETTING:
PAR 16
MODBUS ADDRESS
-- = Not enabled
1...31 = Slave from 1 to 31
(ATTENTION: Avoid calling the
boiler with the same number
assigned to other appliances)
PAR 17
MODBUS CONFIGURATION
-- = Not enabled
1...30 = Default value: 25
(See
Table PAR 17 INST
)
1
2
3
DIP SWITCH
GESTIONE IN MODBUS
MODBUS MANAGEMENT
1 2 3
ON
CN10
CN10
COMUNICAZIONE
MODBUS
MODBUS
COMMUNICATION
1
23
45
6
Schedino
INSOL/ZONA MIX e kit
alloggiamento scheda
Schedino
INSOL/ZONA MIX e kit
alloggiamento scheda
Cavo kit INSOL/ZONA MIX
Kit INSOL/MIX ZONE cable
Cod.6323801
Fig. 4/e
Module with 1 RS-485 board
Module with 2 RS-485 board
INSOL / ZONA MIX
board and kit board
housing
INSOL / ZONA MIX
board and kit board
housing
Summary of Contents for MURELLE HM
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