ICI Caldaie NEREIX Master Guide

INSTRUCTIONS FOR
INSTALLATION AND ASSISTANCE
NEREIX
DATA CENTRALISATION AND
ELECTRICAL POWER SUPPLY
NEREIX MASTER - Revision 3 of 03/2010

NEREIX MASTER - Revision 3 of 03/2010 Page2

NEREIX MASTER - Revision 3 of 03/2010 Page3
We thank you for the choice you've made and for the trust you've shown use.
The products in this manual are elements of a system generally composed of the thermal control unit, the
distribution system (radiators, radiating panel system, fan coil units, etc.) and adjustment devices (thermostats,
probes, etc.).
We recommend to scrupulously observe the instructions in this manual and the instructions of the other
components.
INDEX
1MASTER DEVICE..................................................................................................................4
2MASTER ELECTRICAL BOARD..........................................................................................5
3MODEM.................................................................................................................................6
4TYPICAL BUS CONNECTION LAYOUTS............................................................................7
5BIDIRECTIONAL AMPLIFIER LINK .....................................................................................8
6BUS CONNECTION ..............................................................................................................9
7GENERAL BUS AND ELECTRICAL POWER SUPPLY LAYOUT.....................................10
8VERIFICATIONS ON BUS ..................................................................................................11
9GENERAL INFORMATION.................................................................................................11
10 WARRANTY........................................................................................................................11

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1 MASTER DEVICE
The Master device is a centralised unit for the reading and management of NEREIX zone modules. They are used
for adjustment and heat metering for heating and DHW production systems.
After appropriate setting and configuration, the Master board enables to dialogue with the individual metering units,
making possible:
•The download of consumption data of individual utilities.
•To highlight malfunctioning and alarms
•To send firmware updates to the slave boars and to the ICI KRONOS ambient controls,
•Remote system management by means of the GSM - GPRS modem
•To modify metering unit configuration parameters
•To read individual metering unit status
•To make motorised elements of the metering units function (pumps, valves, etc.)
For interaction with the device, see the dedicated software applications.
MASTER DEVICE CODE CB-1014
Complete Master board device and antijamming power supply filter
MASTER DEVICE WITH MODEM CODE CB-1032
Complete Master board device, antijamming power supply filter and GSM – GPRS modem
(figure below)
F=Phase N=Neutral
In order to supply a previously purchased CB-1014 device with a modem, ask for:
- Code CB-955 modem board
- Code CB-926 flat cable
It must be assembled by qualified personnel.
The GSM - GPRS modem is equipped as standard with an antenna to apply to the box. If reception is not sufficient
where the device is installed, an antenna with a 10 meter extension is available (code CB-913).

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2 MASTER ELECTRICAL BOARD
F=Phase N=Neutral
230 VAC POWER SUPPLY (P – N)
Connect the power supply (phase, neutral and earth) to the support terminal board
Important: as can be seen, the earth does not and must not be carried directly on the board.
On the board, the central pole between P and N must not be used.
DIGITAL OUTPUT (OUT)
this digital output (clean contact) is available for future ICI Caldaie S.p.A. software developments.
4 DIGITAL INPUTS (IMPULSE COUNTER)
4 volumetric meters with impulse output can be connected to these inputs.
EXT PROBE
an appropriate external probe (code 17120012) can be connected to this analogical input.
BUS (two parallel lines)
connections for the Bus lines coming from the NEREIX metering units.
Use both connection terminal boards if there are two bus "branches".
IMPORTANT INFORMATION ON THE BUS CONNECTION
- Respect the A and B polarity on the whole system
- Respect the layouts carried on the following pages
- Use a shielded and twisted 2 x 0.35 mm2cable
- Connect the screen to the Master board only (C terminals) and not to the metering units (slaves)
- There must be continuity on the screen even in correspondence with the metering unit input / output
FOR VERIFICATIONS ON THE BUS, SEE CHAPTER 8.
FROM SUPP
ORT
TERMINAL BOARD
IMPULSE
COUNTER
EXT
PROBE

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USB and RS232 CONNECTORS
allows board interfacing to a PC
MODEM CONNECTOR
allows the connection of the Master board to a specific optional GSM - GPRS modem (code CB 926)
LED DESCRIPTION
Every 10 seconds, the Master board interrogates all the boards to which it is connected.
Meaning of LED 1:
Green on flashing every 10”: The Master communicates with the slaves correctly.
Green on fixed: The Master is sending a configuration or a firmware.
Red on flashing: The Master does not find a board whose address it knows.
Meaning of LED 2:
Not used
3 MODEM
The module is connected (or must be connected) to the Master with the appropriate flat.
The modem is power supplied directly by the board, through the flat.
Cut power from the Master when connecting the modem and when inserting the SIM card.
The SIM card must be enabled to the data traffic (not the voice!!).
The SIM must be pushed to the end run: a “click” means it is inserted.
Before inserting the SIM, deactivate the PIN using a cellular phone.
Main features:
● GSM - GPRS Quad-Band MODEM
● LED for logging status to GSM network
● Buzzer for acoustic signalling
● TTL interface
● Compatible with NEREIX Master board
RADIO FEATURES
● Quad-band EGSM 850/900/1800/1900 MHz
● Emission output:
○ class 4 (2W) @ 850/900 MHz
○ class 1 (1W) @ 1800/1900 MHz
● Sensitivity:
○ 107 dBm (typ.) @ 850/900 MHz
○ 106 dBm (typ.) @ 1800/1900 MHz
GPRS FEATURES
● GPRS class 10
● Class B mobile station
● Coding layouts: from 1 to 4
● PBCCH support
The green status LED means:
● FAST FLASHING = Searching for the network
● SLOW FLASHING = Logged onto the network
● ON FIXED = Data connection in progress
In order to apply the optional antenna with the extension, remove the one as standard pulling the connector directly
from the module connector and insert the new one.

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4 TYPICAL BUS CONNECTION LAYOUTS
IMPORTANT INFORMATION ON THE BUS CONNECTION
- Respect the A and B polarity on the whole system
- Respect the layouts carried on the following pages
- Use a shielded and twisted 2 x 0.35 mm2cable
- Connect the screen to the Master board only (C terminals) and not to the metering units (slaves)
- There must be continuity on the screen even in correspondence with the metering unit input / output
SINGLE BRANCH SYSTEM WITHOUT AMPLIFIERS
The overall length of the cable must not be more than 700 - 800 metres (indicatively).
Only the final slave must be “terminated” by a 330 Ohm resistance.
The 330 Ohm termination resistance must be placed between the terminals A and B of the last slave module
SINGLE BRANCH SYSTEM WITH AMPLIFIERS (OPTIONAL)
The overall length of the cable must not be more than 700 - 800 metres (indicatively).
Only the final slave must be “terminated” by a 330 Ohm resistance.
The 330 Ohm termination resistance must be placed between the terminals A and B of the last slave module.
MASTER
Module
1
Module
2
Module
3
Module
n.
R
R
=
=
3
3
3
3
0
0
O
O
h
h
m
m
MASTER
R
R
=
=
3
3
3
3
0
0
O
O
h
h
m
m
Module
1
Module
2
Module
3
Module
n + …
Module
n+2
Module
n+1
Signal
A
mplifier
I
I
O
O
U
U
T
T
2
2
O
O
U
U
T
T
1
1

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MORE BRANCH SYSTEM WITH AMPLIFIERS (OPTIONAL)
A signal amplifier must be installed on each branch after having overcome the length of 700-800 metres.
A 330 ohm resistance must be wired between terminal A and B on the last module after the signal amplifier.
5 BIDIRECTIONAL AMPLIFIER LINK
Connect the input and two output amplifier based on the type of scheme.
The amplifier must be powered at 230
IMPORTANT:
Never connect the braid to the board. Use only terminals A and B.
Give continuity between the braids of the two lines.
The braids must be connected to the master and any amplifiers (Terminal C)
R
R
=
=
3
3
3
3
0
0
O
O
h
h
m
m
Module
1
Module
2
Module
3
Module
4
Module
5
Module
n
Signal
Amplifier
R
R
=
=
3
3
3
3
0
0
O
O
h
h
m
m
Module
1
Module
2
Module
3
Module
4
Module
5
Module
n
Signal
Amplifier
MASTER
T
T
o
o
o
o
t
t
h
h
e
e
r
r
b
b
r
r
a
a
n
n
c
c
h
h
I
I
O
O
U
U
T
T
2
2
O
O
U
U
T
T
1
1
I
I
O
O
U
U
T
T
2
2
O
O
U
U
T
T
1
1

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6 BUS CONNECTION
Depending on the model, there may or may not be a support terminal board.
The layouts show boards in the middle of a bus branch and therefore they are wired with input and output cables.
For a terminal board connection (with one input cable), it could be necessary to put a termination resistance
between terminals A and B as well (see TYPICAL BUS CONNECTION LAYOUTS).
CLIMA BOARDS
PANEL WITH SUPPORT TERMINAL BOARD PANEL WITHOUT SUPPORT TERMINAL BOARD
HEAT METERING BOARDS
PANEL WITH SUPPORT TERMINAL BOARD PANEL WITHOUT SUPPORT TERMINAL BOARD
Calza= Braid Pompa= Pump V. Dev.= Deviating valve? V. Zone 1= Zone 1 valve Fusibile= Fuse
Commando relè zona 2= Zone 2 relay control Contatori= Meters Sonde= Probes V. Mix= Mixing valve

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7 GENERAL BUS AND ELECTRICAL POWER SUPPLY LAYOUT
IMPORTANT: While wiring the Bus, remember that every branch and junction in the line entails signal decrease
with potential communication criticality.
N.B. Place a circuit breaker switch at each single utility. It makes maintenance easier, allowing to switch off only the
module that needs work.
screen
module
module
module
module
screen
screen
screen
screen
screen
+ screen
+ screen
+ screen
+ screen
THERMAL CONTROL UNIT
Circuit breaker switch
and differential
230 Vac condominium
power supply meter
Outside temperature probe