Unical M 3000 S, Installation And Servicing Instructions

Page: 27 / 36

27
Instruction for the installer
Cascade connection of several M3000S
more than 4 and up to 13 boiler
The use of the modules in more complex installations re-
quires the designation of a main module (MASTER) and the
one of the secondary modules (SLAVE 1.......SLAVE 13).
SETTINGS OF THE MAIN MODULE (MASTER)
Follow the instructions given in the previous page.
SETTINGS OF THE SECONDARY MODULES (SLAVE)
Set the switches of each SLAVE module as shown in the fol-
lowing figure.
SLAVE 1 ....13
1 2 3 4
ON
Once the parameters have been modified it is
possible to remove
REGOLAFACILE.
Once completed the setting of the switche 1-2-3-4 on each
SLAVE module, it is necessary to modify via the
REGOLAFA-
CILE the parameter 01 ‘’code for SLAVE module identifica-
zione modulo SLAVE’’.
Change the value of each SLAVE by introducing its progres-
sive number (each SLAVE module must be identified by a
different Bc).
Follow the procedure for parameter modification described
on chapter 3.11.
Sub-parameter
Nome Factory Value
Regolafacile setting
01 Bc 1 1 ÷ 13
If there are no thermostats for the control of
the direct zone (H.T.) and the floor heating
zone (L.T.) make a shunt between terminals
ROOM STAT / NS, in order to have a conti-
nuous heat request.
(low temperature circuit controlled by:)
- REGOLAFACILE
- ON/OFF ROOM THERMOSTAT
- TIMER
For the control of 1 low temperature zone:
For the control of more low temperature
zones:
Limit switch contact
for ZONE VALVE
BOILER
(OT / +)
EXT
SENSOR
SHIELD
ROOM
STAT / NS
OV
BUS -
BUS +
BOILER
(TA)
BOILER
(OT / +)
EXT
SENSOR
SHIELD
ROOM
STAT / NS
OV
BUS -
BUS +
BOILER
(TA)
NS
(Night shift)
Jp1
BOILER
(OT / +)
EXT
SENSOR
SHIELD
ROOM
STAT / NS
OV
BUS -
BUS +
BOILER
(TA)