Controller Service Guide

NTC_36CBCommunicating Electronic

Controller for Chilled Beams

Model 36CB_IQIDC Model 36CB_IQTA

Examples of chilled beams

The figures and diagrams in this document are for illustration only, and have no contractual significance whatsoever. The manufacturer reserves the right to change the appearance and design of the units at any time without notice.

Contents

TERMINOLOGY ............................................................................................................................................................................. 3

1 - SAFETY CONSIDERATIONS - HANDLING ................................................................................................................................31.1 - General ....................................................................................................................................................................................... .31. - Protection against electrocution ................................................................................................................................................. .31.3 - General installation requirements .............................................................................................................................................. .3

2 - TRANSpORT - STORAGE ........................................................................................................................................................ 4

3 - DESCRIpTION ........................................................................................................................................................................... 43.1 - General description .................................................................................................................................................................... .43. - System architecture .................................................................................................................................................................... .43.3 - Controller operation ................................................................................................................................................................... .6

4 - INSTALLATION ....................................................................................................................................................................... 124.1 - Installation instructions ............................................................................................................................................................ .14. - Physical and electrical characteristics ..................................................................................................................................... .14.3 - Wiring/installation diagrams .................................................................................................................................................... .134.4 - Fuse characteristics .................................................................................................................................................................. .154.5 - View of all NTC connectors .................................................................................................................................................... .15

5 - ASSIGNING pARAMETERS TO THE CONTROLLER - START-up ............................................................................... 165.1 - Parameter assignment tools ..................................................................................................................................................... .165. - Configuring the IDENTIFICATION AND SYSTEM parameters ........................................................................................... .165.3 - Configuring the FACTORY parameters ................................................................................................................................... .175.4 - Configuring the SERVICE parameters .................................................................................................................................... .185.5 - Configuring the "SETPOINT" parameters .............................................................................................................................. .195.6 - Configuring the "MASTER-SLAVE/ZONES" parameters ..................................................................................................... .195.7 - Configuring the TIME SCHEDULE parameters ..................................................................................................................... .195.8 - LIGHTING parameter configuration ....................................................................................................................................... .05.9 - Air conditioning parameter configuration example ................................................................................................................. .

6 - MAINTENANCE - FREquENTLY ASkED quESTIONS ................................................................................................. 236.1 - Controller operation LED ........................................................................................................................................................ .36. - Controller operating status ....................................................................................................................................................... .36.3 - Wiring diagrams for the connectors ......................................................................................................................................... .66.4 - Maintenance functions ............................................................................................................................................................. .76.5 - Initialising a controller with its default parameters ................................................................................................................. .86.6 - Restarting a controller after a mains power failure ................................................................................................................. .86.7 - Frequently asked questions ...................................................................................................................................................... .8

7 - ENVIRONMENTAL INFORMATION ................................................................................................................................... 28

3

TERMINOLOGY

The following abbreviations are used in this document:AI Analogue inputAO Analogue outputBMS Building Management SystemCB Chilled beamCCN Carrier Comfort NetworkCRC2 Wall-mounted thermostat (Carrier Room

Controller )DI On/off input (digital input)DO Digital outputIR2 Infrared remote control

LED Light-emitting diode

NC Normally closedNO Normally openNTC_36CB New Terminal Controller for 36CB chilled

beamspmII Power Module IISuI Simplified User InterfaceTOR On/offuI User interfaceZuI2 Zone User Interface

The document has no contractual significance whatsoever. The manufacturer reserves the right to change the appearance and design of the units at any time without notice.

1 - SAFETY CONSIDERATIONS - HANDLING

1.1 - General

Installation, start-up and servicing of this equipment can be hazardous if certain factors particular to the installation are not considered: presence of electrical components and voltages and the installation site.

Only properly qualified installation engineers and highly qualified installers and technicians, fully trained for the product, are authorised to install and start-up this equipment safely.

During all servicing operations all instructions and recommendations which appear in the service instructions, on labels or in instructions that are supplied with any of the equipment, as well as any other applicable safety instructions must be followed.• Apply all standard safety codes and practices.• Wear safety glasses and gloves.• Lift and move heavy and large objects carefully and set

them down gently.

1.2 - Protection against electrocution

Only personnel qualified in accordance with IEC (International Electrotechnical Commission) recommendations may be permitted access to electrical components. It is particularly recommended that all sources of electricity to the unit be shut off before any work is begun. Shut off the main power supply at the main circuit breaker or isolator.

IMPORTANT: The components of the NTC control system include electronic elements. Therefore they can generate electromagnetic disturbance or suffer disturbance, if they are not installed and used in accordance with these instructions.

IMPORTANT: This material complies with the essential requirements of the following directives:• Electromagnetic compatibility: 89/336/EEC (EN61000)• Low-voltage directives: 73/23/EEC• CE Marking: 93/68/EEC• Directive on liability for defective products: 85/374/EEC • Directive on general product safety: 2001/95/EC• Directive on the Restriction of the Use of Certain

Hazardous Substances in Electrical and Electronic Equipment (RoHS): 2002/95/EC

1.3 - General installation requirements

IMPORTANT: The controller must have an isolation device installed upstream (example: dual-pole circuit breaker). If required, an accessible emergency stop device (e.g. punch type disconnect switch) must allow de-energising of all units. The isolation devices must be sized and installed in accordance with recommendation IEC 60364. They are not supplied by Carrier.

In general the following points must be observed:• The isolation device must be clearly marked to show the

equipment that is connected to it.• The wiring of the components that are part of the NTC

control system as well as the communication busses must comply with the standard regulations of professional installers.

• The components of the NTC control system must be installed in an environment that complies with their IP protection index.

• The maximum pollution level is normal pollution (level ) and the installation category is II.

In order to prevent interference with the connection cables (see chapters "Wiring diagrams/Installation" - list is not exhaustive): • Physically separate the low-voltage cables (CCN commu-

nication bus, room temperature sensor, user interface etc.) from the power wiring. Do not use the same cable routing (maximum 300 mm common with the 30 V a.c., 30 A cable).

• Do not route low-voltage cables in the power wiring loops.• Do not connect large inductive loads to the power source

(disconnect switch) that supplies the controllers.• Use the shielded cable type specified by Carrier and

maintain the cables connected to the controllers.

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2 - TRANSPORT - STORAGE

The following instructions must be observed during transport or storage:The Carrier controller must be kept in a temperature range from -0°C to +50°C and in a relative humidity range between 10% and 90%.

3 - DESCRIPTION

3.1 - General description

The NTC is a communicating air conditioning controller, mounted on Carrier chilled beams. It allows control of the room temperature and the lighting. It is factory-configured and tested and can be connected to four user interface types (ZUI, SUI, CRC, IR). The communication protocol used is CCN (Carrier Comfort Network).

The NTC control system permits control of two or four-pipe chilled beams with or without electric heater in a Carrier system. The NTC has the advantage of virtually including two NTC sub-controllers, each with a CCN address.

Each NTC is independent, while certain inputs and outputs of an NTC sub-controller can be assigned to one or the other NTC sub-controller via the software.

The NTC control system controls room temperature by opening or closing water valves and supplying an electric heater.

In cooling mode, the controller adjusts a chilled water valve in order to keep the ambient temperature at the setpoint for the air conditioned space.

In heating mode, the controller adjusts a hot water valve or an electric heater in order to keep the ambient temperature at the setpoint for the air conditioned space.

The defrost mode enables the air conditioning unit to achieve energy savings and prevents operation below a certain temperature threshold.

In a Maestro II environment the NTC controller can be:• linked to a Power Module II (PmII). This Power Module

allows the following operations: - Directly controlling a lighting source, - Raising, lowering and adjusting the angle of window

blinds.• connected to a Building Management System that allows

monitoring of the air conditioning system via Floor Managers.

• connected to user interfaces permitting control of certain parameters.

3.2 - System architecture

3.2.1 - Simple architecture with one controller

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Legend1 NTCcontroller2 IR2(infraredremotecontrol)3 ZUI2(numericalinterface)4 SUI(simplifiedelectromechanicalinterface)5 CRC2(numericalinterface)

The minimum control system consists of a control module NTC (1) and a temperature sensor. This system may be combined with a user interface (, 3, 4, 5).

3.2.2 - Installing equipmentThe chilled beams are generally located in machine rooms, false ceilings or false walls in the air conditioned zone. The NTC controller is factory-installed on the chilled beam.

Depending on the type (ZUI, SUI, CRC, IR) the user interface can be fixed to the wall, placed on a desk or fixed to the ceiling (for the IR receiver).

Please refer to the diagram "Architecture with several NTC controllers" on the next page.

Several controllers can coexist on a single communication bus. Each NTC sub-controller is allotted a unique address on the bus. This distinguishes it from other controllers and enables it to be recognised and configured.

When several chilled beams are used to provide air conditioning to a single zone, it is essential to organise them into a single group in order to ensure that they do not work against one another.

To do this, a master/slave relationship has to be created between the controllers on each chilled beam. This slave configuration is then supported by a communication bus interconnecting the controllers.

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3.2.2.1 - Master/slave configuration between controllersThere is a software configuration parameter which enables the status of each controller to be defined (master with slave, master without slave, or slave) and each slave controller to be given the address of its master. In a master/slave system all controllers operate in the same operating mode. This information is periodically sent on the communication bus.

The master/slave controller concept is transparent to the end user.

The configuration of the NTC sub-controller master is done by entering its CCN address in the master/slave field of its TCASSGN table.

The configuration of the NTC sub-controller slaves is done by entering the CCN address of its master in the master/slave field of its TCASSGN table

In a Maestro II environment, a Power Module II (PmII) can be added to the system to allow control of one or several light sources and/or window blinds.

Depending on the application, one or several slave modules (NTC and/or PmII) can be linked to the system to control the temperature in a large area and/or have more control of the lighting and blinds.

3.2.2.2 - Leader concept between controllersIf several NTC sub-controllers are installed in the same office, one NTC sub-controller can be configured to distribute the ambient temperature or other information to all other units in this office. These units are called "leader".

The configuration of the NTC information leader sub-controller is done by entering its CCN address in the "Leader" field of he function concerned in its TCASSGN table.

The configuration of the NTC sub-controller receiving this information is done by entering the CCN address of the lead controller in the "Leader" field of the function concerned in its TCASSGN table.

If none of the units is the leader, the value "0" is configured in the "leader” field of its function (default value).

The information that can be exchanged is as follows:• Occupied/unoccupied mode (start/stop)• Ambient temperature• Dewpoint detection• Electric heater unloading

The concept of lead controller is transparent for the end user.

IMPORTANT: Circulating this information increases the traffic at the communication bus.

REMINDER: The traffic depends on:1 - the number of units connected2 - the master/slave configurations3 - the information exchanged

3.2.2.3 - Zone concept between controllersA controller can be part of a zone, which can be useful in the case of large installations to send the same command from the BMS to several controllers. In general the controllers are grouped together in groups that correspond to geographical building zones.

There may be up to 48 zones. Assigning an NTC sub-controller to a group is done by entering the number of the zone to which it should belong in the "Zone" filed of the function concerned in its TCASSGN table.There are zones for:• the occupation mode• the setpoint temperature• the lighting

NOTES• If the unit should not belong to any zone, the value "0"

is configured in the “zone” field (default value).• The ZONE concept is separate from the master/slave

relationship and the relationship with the lead controllers.

3.2.2.4 - Controller addressingEach address must be unique on the communication bus. 96 controllers can be connected to the communica-tion bus. The TheThe NTC sub-controller addresses are configured using the CCN parameter tool.

The NTC has two NTC sub-controllers, but it is necessary to assign a single CCN address to an NTC sub-controller. It will always be assigned as follows:• The first NTC sub-controller will receive the configured

address (always an odd number),• The second NTC sub-controller will receive this address + 1.

These parameter settings are made in the CTRL_ID (chapter 5.)

The NTC will always use two CCN addresses on the bus.

The odd numbered addresses assigned are between 1 and 191. If an even address number is entered, it will be consided as an error and an alarm will be generated by each NTC sub-controller.

The address of the bus number with the controller is a software parameter and by default the bus number is 0 and the address is 1.

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Global Maestro II architecture

Legend1 NTCcontroller2 CCNcommunicationbus3 Userinterfaceconnection4a Infraredreceiver4b IR2infraredremotecontrol5 ZUI26 PowerModuleII(PMII)7 NTCcontrollerforchilledbeamA RoomAB RoomB

In a Maestro II environment the controllers and Power Modules II are connected on the same communication bus. The bus may beThe bus may be connected to the Carrier Building Management System. For an. For an installation using a limited number of controllers, the bus is directly connected to the monitoring post; if there is a large number of units it will be connected via a Floor Manager designed to group together a number of controllers. The maximum number of NTCs on the communication bus is 96 with a limitation for unit addressing which must be between 1 and 19.

IMPORTANT: The Floor Manager acknowledges the con-troller messages on the bus. If the architecture does not include a Floor Manager it is essential to set one of the controllers to address 1 on the bus to acknowledge the messages.

3.3 - Controller operation

The controller allows adjustment of the cold and hot water valves of the chilled beams by reference to the setpoint temperature and the room temperature. Depending on the configuration, it also manages information received by its two logical parameter inputs (window contact, dewpoint, remote On/Off contact, presence detection).

It communicates with its slave controllers, the NTC controllers, the Power Modules II and the Floor Manager via the communi-cation bus, and with the user interface via its user interface connection.

The controller supports the following configurations:- Two pipes- Two pipes + electric heater- Four pipes

The main functions of the controller are:• Controlling room temperature. Temperature is measured

either by the temperature sensor incorporated in the user interface or by a room temperature sensor,

• Selecting Occupied or Unoccupied mode through the user interface or the Floor Manager,

• Controlling the Occupied setpoint through the user interface,• Halting the control function if an open window contact is

detected.

3.3.1 - Controller outputsThe devices that can be connected to the outputs of an NTC sub-controller are as follows:• One or two on/off or pulsed water flow control valves

powered by the NTC controller,• A 300 W or 600 W electric heater powered by the NTC

controller,• A lighting output powered by the NTC controller.

The permitted ways in which this equipment can be combined are described below:

Possible configuration types

2-pipe configuration Cooling Heating

1 Watervalve Notavailable

2 Watervalve Electricheater

4-pipe configuration

3 Watervalve Watervalve

3.3.2 - Lighting outputsEach NTC controller has two lighting outputs. A light can only be either on or off. The commands to switch the lighting on or off can come from the user interface or from the BMS system. The way they are configured is described in the chapter “Assigning parameters”.

Note: When the unit is switched on, the lights are off.

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3.3.3 - Controller inputsThe devices that can be connected to the controller inputs are optional. They are as follows:• A room temperature sensor• A user interface to (among other things) reset the set-point

value• Two digital contacts (DI, dry contact) for each NTC sub-

controller to (depending on the configuration): - determine the window contact status - influence the Occupied/Unoccupied mode - unload the electric heater - detect the presence of an occupant in the office - detect if the dewpoint has been reached

3.3.3.1 - Room temperature sensorIn the case of a system that has no user interface, the controller may be connected to a room temperature sensor fixed to the wall of the air conditioned zone. Choose the location of the sensor carefully. It is recommended that the sensor should be placed 1.5 metres above floor level in order to avoid draughts from doors, windows and air diffusers. Also avoid sources of direct or indirect heat which can have a negative effect on the controller. This means keeping the sensor away from direct sunlight, background heaters, computers etc.

3.3.3.2 - Outside air temperature sensorThe controller can receive the outside air temperature information via the communication bus, it can then display it on the user interface (if this can display it and if the controller has been set to display this temperature). The outside air temperature is not a parameter that influences controller operation.

3.3.3.3 - Digital in/off input (DI) for dewpoint detectionThe chilled beam can be equipped with a dewpoint detector. The dry contact of the dewpoint detector informs the NTC controller when the dewpoint has been reached. The cooling mode is immediately blocked on the controller, to prevent condensation from affecting the office environment.

The operating mode continues its previous operation five minutes after the contact has switched to its initial status.

It is recommended to connect the dewpoint detector to input DI2 (factory parameter setting).

The operating direction of this input is defined by parameter:• NO: Normally open - Correct dewpoint status: contact open - Dewpoint reached alarm: contact closed• NC: Normally closed - Correct dewpoint status: contact closed - Dewpoint reached alarm: contact openFactory setting: Normally open

Dewpoint leader The dewpoint detection information can be distributed to all controllers. The controllers must receive the dewpoint detection information and must be configured as follows:

The "DewPointLeader" parameter value in the TCASSIGN table must be the address of the NTC sub-controller leader that incorporates the dewpoint detector.

3.3.3.4 - Digital on/off input (DI) for window contactThe NTC controller can detect the current status of the window contacts in an air conditioned zone and alter its operating mode as a result.

If it detects that a window is open, the controller switches to defrosting mode. It returns to its original mode when the window contact has returned to “normal” status. Note that the controller takes account of the status of window contacts in accordance with the regulations in different European countries.

In order to avoid short-term changes, the controller only changes to defrost mode one minute after a window contact has been opened. The previous operating mode returns as soon as the contact has switched back to its initial status.

The operating direction of this input is defined by parameter:• NO: Normally open - Window closed: contact open - Window open: contact closed• NC: Normally closed - Window closed: contact closed - Window open: contact openFactory setting: Normally open at the DI

Several windows can be connected to the same input.

In the case of NC logic, the contacts are to be wired in series.

In the case of NO logic, the contacts are to be wired in parallel.

In all cases the total length of the electrical circuit for the window contacts must be 30 m maximum.

Master/slave architecture:If a slave controller detects a change of status in any of its window contacts, it sends this information to the master controller. The master controller and its slave controllers then switch to defrost mode.

If another slave controller detects a change of status in any of its window contacts, it also sends this information to the master controller.

The master controller stays in defrost mode until all window contacts have returned to their initial status.

The master controller takes account of only the first eight messages indicating that a window contact is open (each must be from a different slave controller), and further messages are ignored:• If a window contact that has been taken into account

returns to its initial status, the next message indicating that a window contact is open will be taken into account (provided it is from a slave controller other than the seven already stored).

• If more than eight window contacts are open and the eight window contacts taken into account return to their initial status at the same time, the master controller will leave defrost mode. It may return to it the next time data is exchanged with its slaves (3 min. maximum).

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3.3.3.5 - presence detection DIA dry contact for a presence detector can be linked to this input. This contact is of the normally open or normally closed type (adjustable). It must be maintained for at least seconds so that its status can be taken into consideration by the control.

If a person is detected, the NTC controller passes to the Occupied mode after a delay of one minute (in order to avoid a start-up, if a person only passes through the room). If the person is no longer detected after the pre-set delay, the controller goes back to the Unoccupied mode. The user can at any time manually stop the air conditioning with the user interface. Another time parameter setting that depends on the time schedules of the Floor Manager or the BMS can be linked to the controller operation.

This function permits switching the controller to the Occupied mode in the morning, and if nobody is detected during the pre-set period, the controller is automatically returned to the Unoccupied mode. If somebody is detected during the allocated time, the controller remains in the Occupied mode.

3.3.3.6 - Loadshedding DIA loadshedding dry contact can be connected to this input. This contact is of the normally closed type. It must be maintained for at least seconds so that its status can be taken into considera-tion by the control.

If the contact is open, unloading of the electric heater is active, and the electric heater is not allowed to operate. If the contact is closed, electric heater unloading is not active, and the electric heater can operate.

Loadshed leader The loadshed information connected to a zone leader can be distributed to a group of controllers set with the leader address.set with the leader address.. If a controller receives this information via the communication bus, electric heater unloading is active and the electric heater is disconnected.

3.3.3.7 - DI for the remote ON/OFF contactA dry ON/OFF contact, such as from an external clock, can be connected to this input. This is a normally open type of contact.

In this case, a change of state (from open to closed and from closed to open) alters the operating mode of the controller. A change must be maintained for at least two seconds before its status is taken into account by the controller. Changing from the closed to the open state causes the controller to change to unoccupied mode. Changing from the open to the closed state causes the controller to change to occupied mode.

Master/slave architecture:If a master controller detects a status change for this informa-tion, this controller as well as all the slave controllers go to the Occupied or Unoccupied mode, depending on which mode was previously active.

In the same way, if a slave controller detects a status change for this information, this controller as well as its master controller and the other slave controllers go to the Occupied or Unoccu-pied mode, depending on which mode was previously active.

Start/stop leaderThe remote start/stop information connected to a zone lead controller can be distributed to a group of controllers. If a controller set with the leader address detects a status changeset with the leader address detects a status changedetects a status change of this information via the communication bus, it passes to the Occupied or Unoccupied mode, depending on which mode was previously active.

3.3.3.8 - Global DIA dry contact can be linked to this input. This contact is of the normally open type. It must be maintained for at least seconds so that its status can be taken into consideration by the control.

If the contact is closed, a status change indicator is activated and is linked to the BMS.

This contact can be used to indicate the status of a sensor or disconnect switch, for example.

3.3.4 - Controller air conditioning modesTwo occupancy modes are allowed: Occupied mode and unoccupied mode.

The Occupied mode is designed to be used during periods, when one or more occupants are in the conditioned zone. The unoccupied mode is designed to be used during periods, when nobody is in the conditioned zone.

The occupancy mode can be altered by::• A start/stop command from the communication network:

zones, leaders, master/slave relationship.• A configured DI dry contact.• The mode change button on the user interface

Three operating modes exist:• Comfort (occupied mode)• Economy (unoccupied mode)• Defrosting (unoccupied mode)

The occupation mode is determined by the central management system and by the user interface.• During the occupied mode the comfort operating mode is

selected.• During the unoccupied mode the operating mode will be

the economy or defrost mode based on the parameter setting for the controller.

Each mode complies with an algorithm und different parameter settings.

The controller can take three operating modes: • Heating demand: During this operating mode the heating

output is enabled.• Cooling demand: During this operating mode the cooling

output is enabled.• Satisfied: During this operating mode the heating and

cooling outputs are deactivated.

Please refer to the following principle diagram:

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NOTE: Only for Aquasmart Evolution:The changeover to occupied mode can be configured for a minimum time (configuration tables TCCONFIG, see chapter 5.4). During this period the commands “unoccupied mode” from the System Manager are ignored. In all cases commands from the user interface are taken into consideration.

3.3.4.1 - Setpoint and setpoint reset by user The setpoint is the temperature to be reached. For this the controller reads:• The occupation mode• The room temperature• The user reset value• The configured setpoint value• The current override mode

The value of the temperature setpoint can be reset from the user interface during the Occupied mode.

Seven reset steps are allowed:One null position (reset = 0),3 positions above 0 (reset = 1, or 3),3 positions below 0 (reset = -3, - or -1)

The controller multiplies the user reset value by the reset step value and adds the result to the setpoint: temperature setpoint = configured setpoint + (reset x reset step value)

NOTE: The parameters for setpoint in Occupied mode and Reset step value form part of the configuration parameters for the controller; the default values are 22°C and 1 K.

For the IR2 user interface nine reset steps are allowed.

In Occupied/Comfort mode

Operating principle

-Stop/startDI -Stop/startDI-System“occupied”command -System“unoccupied”command-Userinterface“occupied”command -Userinterface“unoccupied”command

-“Occupied”command

Controller status: Unoccupied mode

Controller status: Occupied mode

Functions enabled-defrost/off-windowopen/dewpointreached

Functions enabled-defrost/off-windowopen/dewpointreached

Setpointtemperature=configuredsetpoint+userreset

Configuredsetpoint

Userreset

Deadband

Temperature

3.3.4.2 - Determining the temperature of the air conditioned zoneThe controller uses a room temperature sensor in order to determine the temperature of the air conditioned zone (control temperature). A configurable parameter tells the controller which type of sensor to use (user interface or room temperature sensor).

Master/slave architecture:Slave controllers take account of the temperature which the temperature lead controller sends them. They therefore do not need their own temperature sensors.

3.3.4.3 - Correcting the measured temperatureThe controller may add a temperature reset (which may be positive or negative) to the measurement given by the room temperature sensor, as follows:

Control temperature = measured temperature + temperature sensor correction

NOTE: The control temperature is the temperature that is taken into consideration for the comparison with the setpoint temperature (desired temperature).

3.3.4.4 - Description of the Comfort operating modeThis mode allows optimal comfort conditions during the occupation time of the conditioned zone. It can be activated from the user interface or by a command from the communication network. The temperature is maintained within a range (deadband) on either side of the setpoint.

See the operating mode diagram in the Comfort mode below.

In Unoccupied mode the setpoint reset is not taken into account and the deadband is extended.

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25.0°C15.0°C 20.0°C13.0°C 27.0°C

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18°C 19.5°C 20°C 20.5°C 22.0 °C

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Unoccupied/Economy mode

Occupied/Comfort mode

Maximumheatingpoint=setpoint-2xdeadband

Maximumcoolingpoint=setpoint+2xdeadband

Hotwatervalveopeningpointorelectricheatercontrol=setpoint-(deadband/2)

Coldwatervalveopeningpointorelectricheatercontrol=setpoint-(deadband/2)

Electricheating

Hotwatervalve100%open

Hotwatervalve100%openColdwatervalve100%open

Coldwatervalveopen

Coldwatervalveopen

Maximumheatingpoint=setpoint-(2xdeadband)-2°C

Setpointorsettemperature

Maximumcoolingpoint=setpoint+(2xdeadband)+2°C

Hotwatervalveopeningpointorelectricheatercontrol=setpoint-(deadband/2)

Coldwatervalveopeningpoint=setpoint-(deadband/2)

Coldwatervalveopen

Coldwatervalve100%open

Electricheating

Hotwatervalve100%open

Hotwatervalveopen

Deadband=1K

Setpoint=20°CDeadband=0.5K

Examples of values

Setpointorsettemperature

Coolingmodedemand

Coolingmodedemand

Deadband

Modesatisfied

Hysteresisof0.2K

Roomtemperature

Heatingmodedemand

Coldwatervalveopen

Heatingmodedemand

Heatingmodedemand

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Coolingmodedemand

Modesatisfied

Roomtempérature

Hysteresisof0.2K

Legend

1. Userinterfacereset2. Openingoftheopen/closedvalveorpulsevalve3. Closingoftheopen/closedvalveorpulsevalve

Heatingdemandoperationforelectricheaterconfiguration

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3.3.4.5 - Description of the Economy operating modeThis mode is generally used during periods when the air conditioned zone is unoccupied. The temperature is maintained in an extended range (compared to the comfort mode) on either side of the setpoint. It can be activated from the user interface or by a command from the communication network.

Refer to the diagram operating mode in Economy mode on the previous page.

3.3.5 - Override modes generated by the Maestro II system

3.3.5.1 - Defrost operating modeThe Defrost mode is designed for minimum energy consump-tion and to maintain a temperature above the defrost, adjustable from -0°C to 14°C (default 7°C). No further action is taken (deadband). When this mode is forced by the system, the defrost setpoint will be used.

The Defrost mode is activated if the controller detects that a window is open or there is a BMS command to that effect. The controller returns to its previous operating mode when the window is closed or when the BMS cancels defrost mode. It canIt can replace the Economy mode by parameter setting.

Defrost setpoint

Minimum value Default value Maximum value

-20°C 7°C 14°C

3.3.5.2 - Loadshed override mode This only applies to the electric heater: depending on the configuration, if the override mode is available and if the unloading command is forced to “yes” by the system, the electric heater will be kept disabled, until one of the two conditions becomes “no”. 3.3.6 - Override modes generated by the controller These override modes are generated by the controller to permit it to operate correctly.

3.3.6.1 - Short cycle protection override mode This mode is only available in occupied mode, and is designed to prevent short cycles between the changeover from heating demand and cooling demand or cooling demand and heating demand. A parameter allows control of the short cycle protec-tion between 1.0 and 5.0 K. This permits a reduction in energy consumption. During the short cycle protection override the controller is in Satisfied mode. The short cycle protection is cancelled, based on the control temperature of the controller, as explained in the following:• If the control temperature is ≤ (setpoint – short cycle

protection) since the last cooling demand, then the controller operates in heating demand. The override is cancelled whenever the controller is placed in unoccupied mode or if the setpoint reset of the temperature is reset.

• If the control temperature is ≥ (setpoint + short cycle protection) since the last heating demand, then the controller operates in cooling demand. The override is cancelled whenever the controller is placed in unoccupied mode or if the setpoint reset of the temperature is reset.

Example: short cycle protection = 1 K

Setpoint=20°CDeadband=1K

Setpoint=20°CDeadband=0.5K

Examples of values

7.0°C 9.0°C

H

T

Defrostsetpoint

Defrostsetpoint+2°C

Heatingoutputactive(watervalveorelectricheating)

Heatingmodedemand

Modesatisfied

Closingofthewatervalve(orelectricheaterstopped)

Heatingmodedemand

TH

Coolingmodedemand

Modesatisfied

Roomtemperature

Hysteresisof0.2K

Diagram of the Defrost operating mode

1 2

Deadband=1K

Setpoint=22°C

Roomtemperature21°C 23°C

22.5°C21.5°C

The short cycle protection limits (1 and ) must be outside the deadband to allow the short cycle protection mode to be active.

1

3.3.6.2 - Slave controller override modeThe slave controller is in “Satisfied” operating mode, if it is in occupied mode. At the start-up or if there is a communication problem with the master controller, it is in stop mode (until a setpoint temperature message is received).

3.3.6.3 - Window open contact override modeIf an open window is detected for longer than one minute this mode will be activated.

This override mode will operate as defrost operating mode. The controller will return to the previous mode that was activated, when the window is closed.

3.3.6.4 - Dewpoint reached override modeWhen the dewpoint has been reached, the override mode is immediately activated, the cooling demand is blocked and an alarm is activated. The heating demand mode will be enabled. Five minutes after the detection that the condensate pan is not full the controller will return to the previously active mode.

3.3.6.5 - Configuration fault override modeIf the configuration fault indicator is activated, all controller outputs are deactivated. The operating mode will be “Satisfied”.

The configuration fault message will be shown in the following configuration, because IR does not have an internal room temperature sensor: - User interface type = IR - Room temperature sensor type = user interface.

3.3.7 - Overriding the actuatorsOverriding (forcing) enables the system to check that the various components in the unit are working correctly, and to assist in the adjustment and commissioning of a system (for instance balancing the networks in a building).

Overriding an actuator takes priority over the current operating mode. The current mode is permitted to resume control of the actuator when override mode is cancelled. Actuators may only be overridden from the BMS, the Floor Manager or the Carrier parameter assignment software tool. This applies to the following (non-exhaustive list):• the valve output• the electric heater output• the lighting output

IMPORTANT: These overrides are not saved or backed up by the controller, and will therefore be lost in the event of a loss of mains power.

4 - INSTALLATION

4.1 - Installation instructions

IMPORTANT: For each power cable entering or leaving the controller a maintenance and locking system is provided. This maintenance system depends on the terminal unit supplied with the controller. It is described in the selection and installation documents for each terminal unit.

4.2 - Physical and electrical characteristics

Operating temperature: 0°C to 50°COperating humidity: 10 to 95% at 50°C (non-

condensing)Controller protection index: IP 0Controller fixing on the chilled beam, done at the factory

4.2.1 - points to follow for the bus cable routing• The bend radius must be higher than 0 times the cable

diameter.• Avoid looping of the earth cable. Place the cable on

metallic structures.• The controller connection to the bus can be made with a

cable extension, if required. All extensions must be as short as possible, and must never exceed 1.5 m.

4.2.2 - The NTC controllerFor the overall dimensions please refer to the diagram below.

Dimensions of the NTC controller, mm

4.2.3 - Temperature sensorsThe room air temperature sensor is sized and supplied to operate with the Carrier controller. It is either incorporated in the user interface or in a box for installation in the room to be air-conditioned.

The sensor operating temperature range is 0°C to 50°C.

250

190

56

13

4.3 - Wiring/installation diagrams

NOTE: A number of connections has been made in the factory. Their description is included for information for maintenance requirements.

As a general rule only the following connections have to be made on-site:- Controller supply wiring- Communication bus wiring- User interface connection wiring- Digital input (DI) wiring

4.3.1 - Control box shown open for standard connections or maintenance

1 Removethescrew2 Removethetwoplasticclips3 Removethesmallcover4. Formaintenance:Removethescrewandthetwoplasticclipstoremovethe

largecover

4.3.2 - Communication bus connectionThe connector J9 permits connection of the communication bus. It is located to the left of connector J. This is a connector with three pins:

-Pin 1: communication +Pin : communication 0 VPin 3: communication -

Refer to the diagram "View of all NTC connectors" in chapter 4.5.

Normalbusconnection

Acceptableextension:max.1.5m

Controllers

• Ensure that the earth potential is the same everywhere.• Connect one of the ends of the bus cable shielding (only

one) to the earth. The distance between the shielding and earth must be as short as possible.

• Ensure that the cable shielding continuity is guaranteed along its whole length.

• If the earth potential between the controllers is the same, it is better to connect both ends of the bus cable shielding to earth.

• To avoid any reflection in long cables, it is recommended to add an end-of-line impedance at one end of the bus. The end-of-line impedance should be the same as the characte-ristic nominal impedance for the selected cable (10 ohms for the specified Belden cable, ref. 984). It will be connected between the “+” and “-” terminals on the last bus unit. It is impor-tant that the end-of-line impedance and the characteristic cable impedance are as similar as possible. If the network only has a short distance, the end-of-line impedances can be left out without effect on data transmissions.

• It is important to connect the “+” and “-” terminals of the bus cable on the same twisted cable pair.

4.3.3 - Connection of the user interface, digital inputs and room temperature sensors

The connection of the user interface to the controller is made via connector J (ZUI, CRC, SUI) or J19 (IR).

Connection principle to cage-clamp terminal

Insert a flat screwdriver (max. 3.5 mm) into the terminal opening holes. This allows opening the terminal underneath to insert the cables. The maximum connection cable section is .5 mm². Once the cable is connected, pull lightly to ensure that it is well locked in the terminal.

Controller-side connections (J2)

1 COMIN

2 COMOUT/SUIoccupationLED

3 0Vd.c.

4 +12Vd.c.

5 On/offinput1forchilledbeam1

6 0Vd.c.

7 Roomtemperaturesensorinputforchilledbeam2

8 Setpointoffsetinput(Setpointin)

9 0Vd.c.

10 Roomtemperaturesensorforchilledbeam1

11 On/offinput1forchilledbeam2

12 0Vd.c.

Connector J2

1 2 3 4 5 6

7 8 9 0 @!

7 @

1 6

For the connection on the user interface side refer to the installation manual for this interface.

21

4

2

3

4

4

14

9 0

Cable

ConnectorJ2

Room temperature sensor connection on:

chilled beam 1 chilled beam 2

4.3.5 - Connection of the digital inputs (DI)This is a volt-free contact for any parameter setting. Digital inputs 1 are wired to connector J, and digital inputs are wired to connector Q11. The maximum length of the contact loop is 30 m.

@

65

!

DI1CableDrycontact

ConnectorJ2

DI1

4.3.5.1 - user interface connection (ZuI2, CRC2, SuI, IR2)

1 2 34 2 3

8 0

ConnectorJ2

Cable

J2 J19

ZUI2 or CRC2 SUI

IR2LocationofconnectorJ19relativetoJ2

4.3.4 - Room temperature sensor connections

Chilledbeam1

Chilledbeam2

Q11Terminal Function1 GND2 DI2chilledbeam23 GND4 DI2chilledbeam15 GND6 24V

Operating principle of connector Q11: 1 Push on the white part to open the connecting hole. This is

not necessary, if the wire is single-strand or tinned. Insert the stripped cable (max. 7 mm) by pushing it into

the hole.3 Release the white part and pull lightly on the cable to

ensure that the connection has been made.

CableinsertionholeOpenholeusingapointedtool

4.3.6 - Connection between chillled beam 1 and chilled beam 2There are two types of boxes:• Box with mother and daughter board• Box with daughter board only.

Chilled beam 1 (connections on NTC sub-controller 1) is the chilled beam connected to the box with the mother and daughter board.

Chilled beam (connections on NTC sub-controller ) is the chilled beam connected to the box with a daughter board only.

All control electronics are contained in the mother board.

Use connector Q1 and the wire harness provided to connect chilled beam 1 and chilled beam . Do not connect the power supply to chilled beam .

Chilledbeam1 Chilledbeam2

Connctioncablebetweenchilledbeams1and2

7 9

15

4.5 - View of all NTC connectors4.3.7 - Controller supplyThe controller supply is from the network: 30 V a.c. (± 10 %) 50 Hz or 60 Hz.

The network wiring connection is made to the disconnect device integrated into chilled beam 1 (with mother board and daughter board).

Insert the power supply cable in cable clamp (1). Then connect the power supply connector to connector Q9 of the daughter board. Finish the wiring by tightening the two screws of the power supply cable clamp.

The connection cable section must be calculated, based on the maximum capacity of the chilled beam to which the controller is connected. The quality and the installation must comply with the recommendations of standard IEC 60364.

CONNECTION TO THE PROTECTION CIRCUIT (EARTH): The earth supply cable ensures the continuity of the protection circuit. It must always be connected at the earth terminal provided.

4.3.8 - Output connectionThe controller is supplied installed and connected to the chilled beam actuator output devices (valves, electric heater, lighting etc.) via an appropriate cable loom. No additional connections are required.

For maintenance ensure that the connections are tagged before disassembly.

4.4 - Fuse characteristics

Refer to the typical fuse location in the NTC box shown open in chapter 4.5 below.

F1 5 mm x 0 mm, 50 V, 5 A, fast-acting, complies with IEC 6017-; e.g.: LITTELFUSE 16005.P or equivalent

F 5 mm x 0 mm, 50 V, 1 A, fast-acting

Legend

1 Cable-clampforcontrollersupplycable2 Self-adhesivelabelwiththecontrollerserialnumberF1 Motherboardfuse,F1,5A,250VF2 Daughterboardfuse,F2,1A,250V

Inputs

Q1 24Va.c.powersupplyconnectorofthesecondaryboardQ6 Connectiontothemotherboard.Q9 230Va.c.controllerpowersupplyconnectorQ11InputsDI2ofchilledbeams1and2/24Va.c.output

J2 Userinterface,roomtemperaturesensor,chilledbeams1and2,on/offinputsDI1ofchilledbeams1and2(windowcontact,presencedetectionetc.)

J9 Electricheaterrelaycommand

OutputsQ2 Heatingoutput,chilledbeam1:300WQ3 230Va.c.transformersupplyQ4 Heatingoutput,chilledbeam1:150W/hotwatervalveoutputQ5 Heatingoutput,chilledbeam1:300WQ8 Heatingoutput,chilledbeam1:150WQ10LightingsupplyconnectorQ1124Va.c.output/DI2inputsforchilledbeams1and2Q12Connectionbetweenchilledbeam1andchilledbeam2Q13ColdwatervalveoutputJ19ConnectionoftheinfraredmodulefortheIR2userinterface

Connector No.

Reference of the connector to be connected

Reference of the connctor of the electronic board

Q2,Q4,Q5,Q8

TycoAMPMate-N-Lock4pointsREF:1-480702-0+926895-1

TycoAMPMate-N-Lock4points0-350430-1

Q9,Q10 TycoAMPMate-N-Lock3pointsRef:1-480700-0+926895-1

TycoAMPMate-N-Lock3points0-350429-1

Q12 TycoAMPMate-N-Lock9pointsRef:1-480706-0+926895-1

TycoAMPMate-N-Lock9points0-350432-1

Q13 TycoAMPMate-N-Lock2pointsRef:1-480698-0+926895-1

TycoAMPMate-N-Lock2points0-350428-1

J19 J2 J9 Q11 F2

F1 Q9

Q4/Q5

Q2/Q8

1

2

Q10Q12

Q13Q1

Q3

Q6

16

5 - ASSIGNING PARAMETERS TO THE CONTROLLER - START-UP

The NTC controller must be configured in accordance with the chilled beam to which it is fitted, the system it serves and the requirements of the customer:

When assigning parameters to the NTC controller it is possible to do the following (this list is not exhaustive):• Declare which user interface is to be used• Declare the zone temperature measurement mode• Declare the heating source• Modify the various temperature setpoints• Declare the digital inputs (DI)• Parameter setting of the lighting

When assigning parameters, there are essentially six different parameter types:• IDENTIFICATION AND SYSTEM parameters, which

depend on the customer’s system,• FACTORY parameters, which depend on the type of

terminal unit used.• SERVICE parameters, which depend on the customer’s

system,• The MASTER-SLAVE/ZONES parameters. They depend

on the customer installation.• SETPOINT parameters, which determine the desired

control ranges,• ALARM parameters, which also depend on the customer’s

system,• TIMETABLE parameters• LIGHTING control parameters - these allow change of the

lighting outputs at the NTC sub-controller.

IMPORTANT: When the controller has been configured, it is essential to power it down and then up again before use, other-wise it may not function exactly as expected.

5.1 - Parameter assignment tools

The terminal units can be configured with the Carrier configura-tion tools.

5.2 - Configuring the IDENTIFICATION AND SYSTEM parameters

Table: CTRL_ID - TYPE CCN: 20H

Function displayed Value displayed Default value Description

1 Device Name* 8characters NTCsub-controiler Nameofunitconcerned

2 Description 24characters ChilledBeamController Description

3 Location 24characters Location

4 Software Part Number 16characters CSA-SR-20E100xx Softwareversionnumber

5 Model Number 20characters Modelnumber

6 Serial Number 12characters xxxxxxxxxxx SerialNumber

7 Reference Number 24characters VersionX.X Referencenumber

8 Bus Number 0to239 0 Busnumbertowhichthecontrollerisassigned

9 Element Number 0to192 1 Numberofthecontrolleronthebus

10 Secondary Bus Com Speed

9600to38400bauds 38400 Communicationspeedofthecontrolleronthecommunicationbus

11 Local Bus Com Speed 1200bauds 1200 Communicationspeedofthecontrollerwiththeuserinterface

12 Device Type 0(Nonbridge)or3(BroadcastAcknowledger)

0 Devicetype

*Thisnamecannotbechanged.

17

5.3 - Configuring the FACTORY parameters

Table: FACTORY1 - TYPE CCN: 13H. List 1

Function displayed Value displayed Default value

Units Control point

Description

UnitType* 60=Chilledbeams 60 - unittype Chilledbeamcontroller

CoolingUnitCapacity* 0.0to60.0 0.0 kW unitcap Unitcoolingcapacity

HydronicSystem 0/10=2pipes1=4pipes

0 - pipe Configuration0=2pipes1=4pipes

CoolingWaterValve 1/2/31=Open/closedwatervalve2=Proportionalwatervalve3=Pulsewatervalve

1 - watervlv Watervalvetype1=On/offwatervalve2=Proportionalvalve2=Pulsevalve

ElHeater No/Yes 0 - elheater Yes=ElectricheaterNo=Noelectricheater

PropWVRunningTime 60to1800 210 sec prowvrnt Proportionalwatervalvecoursetime

PropWVOpeningOffset 0to50 9 % prowvoft Openingoffsetoftheproportionalvalve

RoomTempSensor** 0/1/20=Roomtempsensor1=RAT2=UISensor

1 - roomsnsr Roomtemperaturesensortype0=Roomtemperaturesensor1=Returnairsensor(functionnotoffered)2=Userinterfacetemperaturesensor

* TheunitcapacitywillbeusedfortheBMStocalculatethesystemcoolingdemand.** Thecontrollerselectstheuseoftheelectricheatereitherforheatingorforadditionalheatingbasedonthe2-pipe(C/O)or4-pipeconfigurationofthecontroller.(5):Ifthevalueis(0)the

temperaturesensormustbeconnectedtothecontrollerasaroomtemperaturesensor.Ifthevalueis“2“theroomtemperaturewillbemeasuredatthetemperaturesensoroftheuserinterfaceasaroomtemperaturesensor.

NOTE: If these parameters are modified, the controller is initialised after a period of 10 seconds.

Table: FACTORY2 - TYPE CCN: 13H. List 2

Function displayed Status displayed Default value

Units Control point

Description

CoolRoomSensorBias -5.0to5.0 0,0 °C coolbias Temperaturesensorcorrectionincoolingmode

HeatRoomSensorBias -5.0to5.0 0,0 °C heatbias Temperaturesensorcorrectioninheatingmode

NOTE: If this table is modified, the controller is initialised after a period of 10 seconds, and an alarm bit will be active in the TCMAINT table.

The following table shows the automatic parameter configura-tion for the FACTORY table, based on certain parameters con-figured in the FACTORY1 and TCUI (= Terminal Controller User Interface) tables.

FACTORY1 TCUI FACTORY2

Selected parameters Automatic configuration of the following parameters

RoomTemp Sensor

UnitType HeatRoomSensorBias CoolRoomSensorBias

UI Sensor IR2 0.0 0.0

UI Sensor ZUI 0.0 0.0

UI Sensor CRC2 0.7 0.7

UI Sensor SUI 0.4 0.4

Ambient N/A 0.0 0.0

18

5.4 - Configuring the SERVICE parameters

Table: TCCONFIG - TYPE CCN: 10H. List 1

Function displayed Status displayed Default value

Units Control point

Description

AutoRestartMode 0/10=Unocc.modeasdefaultmode1=Previousmodeasdefaultmode

1 - autorst Restartmode0=Unoccupiedmode1=Previousmode

UnoccupiedPeriodTyp 0/10=Economy1=Frost

0 - unoctyp Operatingtypeinunoccupiedmode0=Economy1=Defrost

Loadshed 0/1(0=Disable;1=Enable) Disable - lshdena Electricheaterunloadingfunction

PropCoolWVPropGain* 0.0to40.0 20 - cvalvep ProportionalgainforproportionalcoolingvalvePropCoolWVIntegGain* 0.0to5.0 0.5 - cvalvei IntegralgainforproportionalcoolingvalvePropHeatWVPropGain* 0.0to40.0 20 - hvalvep ProportionalgainforproportionalheatingvalvePropHeatWVIntegGain* 0.0to5.0 0.7 - hvalvei IntegralgainforproportionalheatingvalveDI1Type 0/1/2/3/4/5/6/7/8/9

0=Windownormallyopened1=Windownormallyclosed2=Dewpointdetectionnormallyopen3=Dewpointdetectionnormallyclosed4=Start/Stopnormallyopen5=Loadshednormallyclosed6=Presencedetectionnormallyopen7=Presencedetectionnormallyclosed8=Universalinput

0 - din1typ DI1inputtype0=Windownormallyopen1=Windownormallyclosed2=Dewpointdetectioncontactnormallyopen3=Dewpointdetectioncontactnormallyclosed4=Start/stopnormallyopen5=Heaterunloadingnormallyclosed6=Presencedetectionnormallyopen7=Presencedetectionnormallyclosed8=Universalinput

DI2Type Sameas“DI1Type” 2 - din2typ DI2inputtypeOccUnoccBMSDelay** 1to600 60 Minutes bmsdelay Delaytimeforchangeovermodefromoccupiedto

unoccupiedwithabsencedetectedOccUnoccAbsenDelay** 1to600 5 Minutes absdelay Delaytimeforchangeovermodefromunoccupiedto

occupiedwithpresencedetectedLinkLightOut1ToGroup*** 0to4 1 - out1lght Assignslighting1outputoftheNTCtotheselectedgroup

numberLinkLightOut2ToGroup*** 0to4 1 - out2lght Assignslighting2outputoftheNTCtotheselectedgroup

number

* Proportionalandintegralgainsareonlyused,ifthevalvesusedareproportionalvalves.** Usedforpresencedetection*** IfthelightingoutputsarenotassignedtothisNTCsub-controller(refertotheTCLINKtable),thevariables“LinkLightOutXToGroup”areignored.

Table: TCUI - TYPE CCN: 10H. List 2 Function displayed Status Default

valueUnits Control

pointDescription

UIType 0/1/2/3/40=None1=IR22=ZUI23=CRC24=SUI

1 - uityp Userinterfacetype0=None

IrrChannel 0/1/2/3/4/5/6/70=Allchannels1=1stchannel2=2ndchannel7=7thchannel

0 - irrch Infraredremotecontrolreceiverchannel0=Allchannels1=1stchannel2=2ndchannel.....7=7thchannel

IrrBuzzer 0/1(No/Yes) Yes - irrbuzz ActivateordeactivatetheIR2interfacebuzzer

DisplayTempOrStpOnUI*† 0/1/20=None1=Controltemperature2=Setpoint

0 - disptemp Temperaturedisplayontheuserinterface0=None1=Controltemperature2=Setpointtemperature

DisplayOATOnUI*† † 0/1(No/Yes) 0 - dispoat Outsidetemperaturedisplayontheuserinterface

DisplayWndwOnUI*‡ 0/1(No/Yes) 1 - dispwnd Windowopendetectiondisplayontheuserinterface

DisplayMetricOnUI*† 0/1(No/Yes) 1 - dispunit TemperatureunitsystemdisplayYes=°C;No=F

DisplayLightOnUI** 0/1/2/3/4/50=Menudisabled1=12=12All3=123All4=1234All5=1All

2 - displght Displayofthelightinggroupsontheuserinterface0=deactivated1=group12=group1,2,all3=group1,2,3,all4=group1,2,3,4,all5=group1,all

* Ifthevalueis“Yes“theselectediconsaredisplayedontheuserinterface(dependingonthedisplaypossibilitiesoftheuserinterface).** OnlyavailableforZUI2andIR2† OnlyavailableforZUI2andCRC2†† OnlyavailableforCRC2‡ OnlyavailableforZUI2

19

5.5 - Configuring the "SETPOINT" parameters

Table: STP - TYPE CCN: 17H. List 1

Function displayed Value Default value Units Control point Description

Setpoint 15.0to32.0 22.0 °C occset Setpoint

ResetStepValue 0.0to2.0 1 °C rststep Userresetstepvalue

OccDb 0.5to5.0 1 °C occdb Deadbandoccupiedmode

EcoDb 5.0to14.0 10.0 °C ecodb Deadbandunoccupiedmode

OffFrostSetpoint* -20.0to14.0 7.0 °C frostset Defrostsetpoint

ShortCycleProtection 0.0to5.0 1 °C shortcycl Shortcycleprotection

* The“FrostSetpoint“parametermustbesetto-20°Ctoobtainarealmodedeactivation.

5.6 - Configuring the "MASTER-SLAVE/ZONES" parameters

Table: TCASSGN - TYPE CCN: 10H. List 3List 3 3

Function displayed

Value displayed

Default value

Units Control point

Description

MasterSlave 0to192 0 - mstraddr Mastercontrolleraddress

CtrlTempLeader 0to192 0 - tmpldr Leadcontrolleraddress,ambienttemperature

DewPointLeader 0to192 0 - dewldr Leadcontrolleraddress,dewpointdetection

ZoningStartStop 0to192 - - ssadd Leadcontrolleraddressforstart/stopinput

LoadshedLeader 0to192 0 - ldshadd Leadcontrolleraddressforelectricheaterunloading

ZoneLight 0to48 0 - zlgrpnb Numberofthegrouptowhichthecontrollerbelongsforlighting

ZoneOcc 0to48 0 - zogrpadd Numberofthegrouptowhichthecontrollerbelongsfortheoccupationmode

ZoneSetpoint 0to48 0 - zsgrpadd Numberofthegrouptowhichthecontrollerbelongsforthesetpoint

NOTES:- If the parameter value is 0, the parameter is inactive.- If one of these parameters is modified, the controller is initialised after a period of 10 seconds, and an alarm bit will be

active in the TCMAINT table. - To declare a master controller its correct address must be given as the value.- To declare a slave controller the correct address of its master must be given as the value.To declare a slave controller the correct address of its master must be given as the value..

5.7 - Configuring the TIME SCHEDULE parameters

Table: TIME - Type CCN : 21H

Function displayed

Possible displays

Default value

Description

1 Time 00:00to23:59 00.00 Timeofday

2 DayOfWeek 1to7 ... Dayoftheweek

3 HolidayToday 0ot1 0 Definespublicholidays

4 Month 1to12 0 Month

5 DayOfMonth 1to31 0 Dayofthemonth

6 Year 0to99 0 Year

NOTE: These “time schedule” parameters are not saved or backed up if there is a mains power failure. They are re-initialised.

0

5.8 - LIGHTING parameter configuration

Important: The information in this table is shared by the two NTC sub-controllers that physically share the same electronic board and the same microcontroller. The table can be seen by the two NTC sub-controllers, but there is only only table.

Table TCLINK - TYPE CCN: 10H, list 4

Function displayed

Valu

e d

isp

laye

d

Def

ault

va

lue

Uni

t

Co

ntro

l p

oin

t

Description

LinkUiToTc 1/2 1 - uitc AssignstheuserinterfacetothenumberoftheNTCsub-controller*

LinkLightOut1ToTc 1/2 1 - lght1tc Assignsthelighting1outputtothenumberoftheNTCsub-controller*

LinkLightOut2ToTc 1/2 2 - lght2tc Assignsthelighting1outputtothenumberoftheNTCsub-controller*

*OneuserinterfaceisavailableperNTC.ItisassignedtoNTCsub-controller1orNTCsub-controller2

5.8.1 - Lighting group commandThe principle is as follows:• The lighting outputs are assigned to an NTC sub-

controller and to one or more groups.• The user interface transmits commands to the groups.

The creation of lighting groups is done in three stages:1. Assignment of the lighting outputs to the NTC sub-

controllers. Assignment of the lighting outputs to the groups3. Configuration of the user interface.

First stage: The lighting outputs are assigned to an NTC sub-controller. The assignment can be made using the TCLINK table. This assignment is useful to limit the lighting command to the NTC sub-controllers belonging to the master/slave assembly.

Second stage: The lighting outputs are assigned to the groupsThe lighting outputs of the NTC sub-controllers are assigned to a group number from 1 to 4. The lighting command from a user interface in a given group will be applied to all lighting outputs belonging to this group. Assignment of lights to groups is done in the TCCONFIG table. The NTC sub-controller does not consider group numbers assigned to outputs that have not been attributed to it.

Third stage: user interface configurationOne user interface is available per NTC. It is assigned to one of the two NTC sub-controllers using the "LinkUiToTc" parameter in the TCLINK table.

The "DisplayLightOnUI" parameter in the TCUI table permits configuration of the number of the groups that will be used and displayed on the user interface. The value will be between 1 and 4: 1 = "Group1", = "Group 1, group , all groups",3 = "Group 1, group , group 3, all groups",4 = "Group 1, group , group 3, group 4, all groups".

These are shown as "1", "1 ALL", "1 3 ALL", "1 3 4 ALL" on the user interface screen.

If the display of the lighting screen on the user interface is not wanted, the value 0 will be configured.

NOTE: The group command is especially of interest for open-plan or meeting rooms.

This command management allows control of the lights belong-ing to groups that are not used by the NTC sub-controller to which the user interface is assigned. The NTC sub-controller always relays the command on the communication bus.

Configuration example for office 1

LegendM MasterE SlaveNTCSCNTCsub-controller

Messagecirculationonthebus

/ Light on/offLighton/off

Office2

NTCSC11NTCSC12

NTCSC13NTCSC14

NTCSC15NTCSC16

CCNbus

E E E M E

Office1

Lightinggroup2command

M

The TCLINK table of each NTC sub-controller includes the default parameters, and these are:• The user interface is assigned to NTC sub-controller 1.• Lighting output 1 is assigned to NTC sub-controller 1,• Lighting output 1 is assigned to NTC sub-controller .

These parameters are not modified in this example. NTC sub-controller address 13 is the master, and the NTC sub-controller addresses 14, 11 and 1 are the slaves. The lighting commands will be limited to this master/slave assembly, and will not act on the NTC sub-controller of office .

If the lights of the NTC sub-controller addresses 13,14 and 11 are to be switched on at the same time and the light of NTC sub-controller independently, two lighting groups will be used. One user interface is connected to each NTC, and the two user interfaces will control the lighting in the same way.

Table: TCCONFIG - NTC sub-controller addresses 13, 14

Field Value Description

LinkLightOut1ToGroup 1 Lightingoutput1ispartofgroup1

LinkLightOut2ToGroup 1 Lightingoutput2ispartofgroup1

Table: TCCONFIG - NTC sub-controller addresses 11, 12

Field Value Description

LinkLightOut1ToGroup 1 Lightingoutput1ispartofgroup1

LinkLightOut2ToGroup 2 Lightingoutput2ispartofgroup2

1

Table: TCUI - NTC sub-controller addresses 11, 12, 13, 14

Field Value Description

DisplayLightOnUI 2 Theusercommandwillbeappliedtogroup1orgroup2ortoallgroupsoftheNTCsub-control-lersbelongingtothemaster/slaveassembly.

NOTE: Correspondstotheuserscreendisplay"12ALL".

The lighting command applies to groups 1 or as required. Whenever the user gives the command "ALL" he can command all lights of all NTC sub-controllers, belonging to the master/slave assembly (in our example all of office ).

5.8.2 - Individual lighting commandThe principle is as follows:• The lighting outputs are assigned to an NTC sub-controller.• The user interface transmits commands to the NTC sub-

controller.

The configuration of individual lighting commands is done in three stages.1. Assignment of the lighting outputs to the NTC sub-

controllers. Assignment of the lighting outputs to the individual

command3. Configuration of the user interface.

First stage: The lighting outputs are assigned to an NTC sub-controller. The assignment can be made using the TCLINK table. This assignment is useful to limit the lighting command to the NTC sub-controllers belonging to the master/slave assembly.

Second stage: Assignment of the lighting outputs to the individual commandTo activate the individual command, the lighting outputs are assigned to group number 5. The lighting command from a user interface only applies to lighting outputs assigned to the NTC sub-controller, to which the user interface is assigned.

The assignment of the lights to the individual command (group 5) is done from the TCCONFIG table.

Third stage: Configuration of the user interfaceThe field "DisplayLightOnUI" in the TCUI table must be con-figured to 5 (individual command). The display on the user interface will now be "1 ALL"; "1" signifies individual command, "ALL" signifies all lights of all NTC sub-controllers belonging to the master/slave assembly.

If the display of the lighting screen is not required, the value 0 is configured.

Configuration example for office 2

Office2

NTCSC11NTCSC12

NTCSC13NTCSC14

NTCSC15NTCSC16

CCNbus

Office1

Individuallightingcommand

M EE E EM

LegendM MasterE SlaveNTCSCNTCsub-controller

Messagecirculationonthebus

/ Light on/offLighton/off

The TCLINK table of each NTC sub-controller includes the default parameters, and these are:• The user interface is assigned to NTC sub-controller 1.• Lighting output 1 is assigned to NTC sub-controller 1,• Lighting output is assigned to NTC sub-controller .

These parameters are not modified in this example. NTC sub-controller address 15 is the master, and the NTC sub-controller address 16 is the slave. The lighting commands will be limited to this master/slave assembly, and will not act on the NTC sub-controller of office .

The lights of the NTC sub-controller address 15 can be switched on independently or the lighting of NTC sub-controller addresses 15 and 16 can be controlled at the same time.One user interface is connected to the NTC, two user interfaces control the lights in the same way.

TCCONFIG table of the NTC sub-controllers (addresses 15, 16)

Field Value Description

LinkLightOut1ToGroup 0 Thelighting1outputiscontrolledasanindividualcommand

LinkLightOut2ToGroup 0 Thelighting2outputiscontrolledasanindividualcommand

TCUI table of the NTC sub-controllers (addresses 15 and 16)

Field Value DescriptionDisplayLightOnUI 5 Theusercommandcanbeappliedasan

individualcommandoftheNTCsub-controller(1)ortoalltheNTCsub-controllersofthemaster/slaveassembly(All).

Notes: Correspondstotheuserscreendisplay"12ALL".- Alightingcommandatselection"1"modifiesthelightingouputstatus

attributedtotheNTCsub-controllertowhichtheuserinterfaceisassigned.- Alightingcommandatselection“ALL”modifiesthestatusofalllighting

outputs,attributedtoallNTCsub-controllersofthemaster/slaveassembly.

5.9 - Air conditioning parameter configuration example

The following example shows a possible parameter setting of an installation.

Room A• Room A is a meeting room. • It is air conditioned by two chilled beams ( pipe + electric

heater) - 300 W (chilled beam 1) and 150 W (chilled beam ).• A dewpoint detector is linked to input DI of chilled beam 1.• A window contact is linked to input DI1 of chilled beam 1. • The room temperature is measured by the temperature

sensor of the ZUI user interface.• A light is integrated in the chilled beam.

Room B• Room B is an office. • It is air conditioned by a 4-pipe chilled beam. It is not

equipped with a dewpoint detector.• The room temperature is measured by the room temperature

sensor. The chilled beam does not include a light.• There is a presence detector in the office for the air con-

ditioning start/stop function and it is connected to the DI1 of chilled beam 1.

Sample architecture

X Y Z

4

3 1

2

5

A B

3

X MasterNTCcontrollerwithmotherboardanddaughterboard,address1Y SlaveNTCcontrollerwithdaughterboardonly,address8Z MasterNTCcontrollerwithmotherboardanddaughterboard,address31 ConnectioncableQ12betweenchilledbeam1andchilledbeam22 Communicationbus3 Userinterfaceconnection4 ZUI25 CRC2A LocalAB LocalB

Controller parameter setting:The values of the tables not shown are the default values. For the explanation of the displayed functions and displayed or selected values please refer to chapter 5.

Table: FACTORY1 - Type CCN: 13H. List 1

Room AMaster 1

Room ASlave 8

Room BMaster 3

Displayed function Possible displays

Values used

UnitType 60 60 60 60CoolingUnitCapacity 0.0to60kW X X XHydronicSystem 0/1 0 0 0WaterValve 1/2/3 1 1 1ElHeater No/Yes 1 1 1PropWVRunningTime 60to1800 210 210 210PropWVOpeningOffset 0to50 9 9 9RoomTempSensor † 0/1/2 2 0 0

Table: FACTORY2 - Type CCN: 13H. List 2

Room AMaster 1

Room ASlave 8

Room BMaster 3

Displayed function Possible displays

Values used

CoolRoomSensorBias -5.0to5.0 0.0 0.0 0.7HeatRoomSensorBias -5.0to5.0 0.0 0.0 0.7

Table: TCUI - TYPE CCN: 10H. List 2

Displayed function Possible displays

Room AMaster 1

Room ASlave 8

Room BMaster 3

UIType 0/1/2/3/4 2 2 3IrrChannel 0/1/2/3/4/5/6/7 0 0 0IrrBuzzer 0/1(No/Yes) 0 0 0DisplayTempOrStpOnUI 0/1/2 1 1 1DisplayOATOnUI 0/1(No/Yes) 0 0 0DisplayWndwOnUI 0/1(No/Yes) 1 1 0DisplayMetricOnUI 0/1(No/Yes) 1 1 1DisplayLightOnUI 0/1/2/3/4/5 1 1 0

Table: TCASSGN - CCN TABLE TYPE : 10H. List 3

Displayed function Possible displays

Room AMaster 1

Room ASlave 8

Room BMaster 3

MasterSlave 0to192 1 1 0CtrlTempLeader 0to192 1 1 0DewPointLeader 0to192 0 0 0StartStopLeader 0to192 0 0 0LoadshedLeader 0to192 0 0 0ZoneLight 0to48 1 1 0ZoneOcc 0to48 0 0 0ZoneSetpoint 0to48 0 0 0

Table: TCLINK - TYPE CCN: 10H, List 4

Displayed function Possible displays

Room AMaster 1

Room ASlave 8

Room BMaster 3

LinkUiToTc 1/2 1 1 0LinkLightOut1ToTc 1/2 1 1 0LinkLightOut2ToTc 1/2 2 2 0

Table: TCCONFIG - TYPE CCN: 10H. List 1

Displayed function Possible displays

Room AMaster 1

Room ASlave 8

Room BMaster 3

AutoRestartMode 0/1 1 1 1UnoccupiedPeriodTyp 0/1 0 0Loadshed 0/1 0 0DI1Type 0/1/2/3/4/5/6/7/8 0 0 6DI2Type 0/1/2/3/4/5/6/7/8 2 2 2LinkLightOut1ToGroup 0/1 1 1 0LinkLightOut2ToGroup 0/1 0 0 0

3

6 - MAINTENANCE - FREQUENTLY ASKED QUESTIONS

6.1 - Controller operation LED

A controller continuously tests whether its electronics are working properly. LEDs fitted to the board can be seen beneath the transparent cover on the casing.

Red LED: controller status

LED status NTC sub-controller status

Permanentlyswitchedoff Nosupplytoboard,powersupplyfault

Permanentlyswitchedon Supplytoboardokay,butthemicrocontrollerisnotactiveordefective.

Flashing:onfor800ms,offfor200ms(1Hz)

Theboardworkswithouttheapplicationcodeloadedorduringtheinitialisationofthebootloader

Flashing:onfor1s,offfor1s(1/2Hz)

Theboardworkswiththeapplicationcodeloaded

Flashing:onfor250ms,offfor250ms

Factorytestactivated

Flashing:onfor60ms,offfor60ms

TheNTCsub-controllershavereceivedtheiraddressandthediagnosticmessage

Flashingatanyotherfrequency

Theelectronicboardworkswithafault

Locationoftheoperationcheckdisplaywindow(redandyellowLEDs)

6.2 - Controller operating status

The maintenance variables inform us about the controller operating status and the status of the outputs to which they are connected.

The override concept is authorised from these parameters. The override can apply to all variables found in capital letters in the following tables.

Yellow LED: controller communication status

LED status NTC sub-controller status

Flashing AnNTCsub-controllertransmitsaCCNmessage

Off TheNTCsub-controllersdonottransmitaCCNmessage

4

Table: TCSTATUS - TYPE CCN : 11H. List 1

Function displayed Possible displays Units Control point Override Description

Occupancy 0/1Unoccupied(EcoorDefrost)Occupied(Comfort)

- occstat No Occupationmode0=Unoccupied(economyordefrost)1=Occupied(comfort)

OprMode 0=Satisfied1=Coolingdemand2=Heatingdemand

- oprmode No Operatingmode0=Satisfied1=Coolingdemand2=Heatingdemand

CtrlTemp*** ±nnn.n °C CTRLTEMP Yes Roomtemperature

CtrlPoint ±nnn.n °C ctrlpnt No Configuredsetpoint+userreset

CtrlDb ±nnn.n °C ctrldbd No Deadbandactive

ResetPos -3to3 - rstpos No Userreset

Oat ±nnn.n °C OAT Yes Outsideairtemperature(overrideonly)

DI1Status Closed/open - DISCIN1 Yes DI1inputstatus(open/closed)

DI2Status Closed/open - DISCIN2 Yes DI2inputstatus(open/closed)

OutCwv 0to100 % OUTCWV Yes Coldwatervalvestatus(0%=closed)

OutHwv 0to100 % OUTHWV Yes Hotwatervalvestatus(0%=closed)

OutLight1Status 0/1/2(Off/On/Disable) - LGHT1STA Yes Light1status0=On1=Off2=Notapplicable

OutLight2Status 0/1/2(Off/On/Disable) - LGHT2STA Yes Light2status0=On1=Off2=Notapplicable

Start/Stop Off/On - STRTSTP Yes Start/stopconfiguredDIstatus

FrostProtection Disable/Enable - FRSTPROT Yes Defrostmodestatus

LoadshedInEffect No/Yes LSHDFLG Yes Unloadingoverridemodestatus

TcStatus* b0tob7-seelegend - SubNtcstatf No NTCsub-ontrollerstatusindicators-seelegendbelow

AlarmFlags1** b0tob7 - see legend-seelegend - almstat1 No Controlleralarm1indicators-seelegendbelow

AlarmFlag2** b0tob7 - see legend-seelegend - almstat2 No Controlleralarm2indicators-seelegendbelow

Legend:

* Explanation of the TcStatus bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Slavecontroller(SubNtcSlave)b1:True(=1)Mastercontrollerwithslaves(SubNtcmasterwithslaves)b2:True(=1)Roomtemperatureleadcontroller(Controltemp.leader)b3:True(=1)Reservedb4:True(=1)Dewpointleadcontroller(DewPoint)b5:True(=1)Start/stopzoneleadcontroller(Start/Stop)b6:True(=1)Loadshedzoneleadcontroller(LeaderLoadshed)b7:True(=1)Ifoneoftheoutputsisintheforcedstatus(Forcedstate):Cooling

output,heatingoutput.

** Explanation of the AlarmFlags1 bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Roomtemperaturesensoroutofrange(ControlTempSensoroutofrange)

b1:True(=1)UserinterfacefaultalarmSUI(setpointreset)(SUI_RESETSensorAlarm)

b2:True(=1)Dewpointalarmviasupplyairtemperaturesensor/coldwatertemperaturesensoroutofrange(SupplyAir/CoolWaterSensoroutofrange)

b3:True(=1)Communicationfaultwiththeuserinterface(CommunicationFailurewithUserInterface)

b4:True(=1)Communicationfaultwiththemastercontrollerb5:True(=1)Communicationfaultwiththeroomtemperatureleader(CtrlTemp

TcLeader)b6:True(=1)Communicationfaultwiththeleadcontrollerb7:True(=1)EEPROMfault(EEPROMaddressfault&EEPROMconfiguration

fault)

*** Explanation of the AlarmFlags2 bits: AlarmFlags2 bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Configurationfaultb1: True(=1)Reservedb2: True(=1)Reservedb3: True(=1)Reservedb4: True(=1)Reservedb5: True(=1)Reservedb6: True(=1)Reservedb7: True(=1)Reserved

Roomtemperature=measuredtemperature+/-temperaturecorrection

5

Alarm description If this alarm is activated

Roomairtemperaturesensoroutsidethemeasurementrange. Iftheroomairtemperaturesensorisoutsidethemeasurementrangeforatleast192seconds.Thisalarmwillresetto0,ifthevaluereturnstothevalidmeasurementrange.

SUIuserinterfacefaultalarm(setpointreset) Ifthesensorisoutsidethemeasurementzone(circuitopenorshortcircuit)foratleast192seconds.Whenavalidvalueisobtained,thealarmwillresetto0.

Dewpointreachedalarm Whenthedewpointisreached;thisalarmisresetto0whenthethetemperaturefallsbelowthedewpoint.

Communicationfaultwiththeuserinterface(CRC2.Zui2). IfthreeconsecutivecommunicationfaultsoccurwiththeZUI2ortheCRC2.Thisalarmwillresetto0,whencommunicationhasbeenre-established.

Communicationfaultwiththemastercontroller Ifnosetpointinformationhasbeenreceivedfromthemasterformorethan10minutes.Thisalarmwillresetto0,whencommunicationhasbeenre-established.

Communicationfaultwiththeroomtemperatureleadcontroller Ifnoroomtemperatureinformationhasbeenreceivedfromtheroomtemperatureleadcontrollerformorethan10minutes.Thisalarmwillresetto0,whencommunicationhasbeenre-established.

Communicationfaultwiththeleadcontroller Ifnoinformationhasbeenreceivedfromtheleadcontrollerformorethan10minutes.Thisalarmwillresetto0,whencommunicationhasbeenre-established.

EEPROMfault IfthecontrolofcorrectEEPROMoperationhasfailed.Thisalarmwillresetto0afterthecontrollerhasagainbeenenergisedtoverifythattheoperationoftheEEPROMiscorrect.

Configurationfault Ifanincorrectconfigurationhasbeendetected.

* Thesealarmscauseachangeovertothecontrolleroverridemodecalled“AlarmOverride”.TheoperatingmodechangestoSATISFIEDwhenthisoverridemodeisactive.

Alarm explanation (AlarmFlags 1)

The controller can detect malfunctions, such as:

6

J2Communicationinput(COMIN) 1

Communicationoutput(COMOUT)/occupationLEDoutput 2

GND 3

+12Vd.c. 4

On/offinput#1,chilledbeam1 5

GND 6

Roomtemperaturesensorinput,chilledbeam1 7

Usersetpointinput 8

GND 9

Roomtemperaturesensorinput 10

On/offinput#2,chilledbeam2 11

GND 12

12Va.c.supplyofthemainboard

J312Va.c.(phase) 1

Notused 2

12Va.c.(neutral) 3

J9GCN(-) 1

GND(G) 2

GCN(+) 3

GND

(+)

(-)

SUI user interface

ZUI2 , CRC2 user interface

COMIN

COMOUT

GND

12Vd.c.IN

100kΩ

10kΩ@25°CJumperlink

ON/OFF

6.3 - Wiring diagrams for the connectors

NOTE: The user interface is always wired in the same way, no matter which chilled beam it is linked to.

Phase 1

Neutral 2

Earth 3

Q9 - 230 V a.c. controller supply

Phase 1

Neutral 2

Earth 3

Q10

GND 1

On/offinput#2,chilledbeam2 2

GND 3

On/offinput#2,chilledbeam1 4

GND 5

24Va.c.output 6

Q11

~24Va.c.

Chilled beam 1

Phase 1

Neutral 2

Earth 3

Heating,slave 4

Heating,master 5

Slavevalve 6

Mastervalve 7

Slavevalve 8

Mastervalve 9

Chilled beam 2

Phase 1

Neutral 2

Earth 3

Heating,slave 4

Heating,master 5

Slavevalve 6

Mastervalve 7

Slavevalve 8

Mastervalve 9

Q12 - Link between master and slave chilled beams

Phase 1

Neutral 2

Q13

Q3Phase 1

Notused 2

Neutral 3

Firststagesupply150W 1

Secondstagesupply150W 2

Neutral 3

GND 4

Q2, Q4, Q5, Q8 - Electric heater hot water valve supply

~

J19+5Vd.c. 1

+12Vd.c. 2

GND 3

Infraredinput 4

GreenLEDoutput 5

YellowLEDoutput 6

RedLEDoutput 7

Buzzeroutput 8

Manualoverridemodeinput 9

IR2Receiver

8 794

256

1 2 3

230Va.c.network 1 2 3

1 2

1 2 3 4

3 1

7

6.4 - Maintenance functions

In case of incorrect operation of the controller, please refer to the tables below and to the controller override mode description (described in the controller operation section), in order to make a complete diagnosis.

Table: TCMAINT - TYPE CCN : 12H. List 1

Function displayed Possible displays Units Control point Override Description

HeatCoolOverride*** b0tob7-seelegend - heatovr No Cooling/heatingmodeoverrideindicator

ModeOverride1** b0tob7-seelegend - modeovr1 No Operatingmodeoverrideindicator

ModeOverride2*** b0tob7-seelegend - modeovr2 No Operatingmodeoverrideindicator

MiscOverride† b0tob7-seelegend - miscovr No Miscellaneousoverrideindicator

InManualOverride Closed/open - manovr No Infraredreceiverpushbuttonstatus(closed/open)(closed/open)

Legend:

* Explanation of the HeatCoolOverride bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Reservedb1:True(=1)Reservedb2:True(=1)Reservedb3:True(=1)Electricheaterunloadingoverridemodeb4:True(=1)Reservedb5:True(=1)Reservedb6:True(=1)Reservedb7:True(=1)Reserved

** Explanation of the ModeOverride1 bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Reservedb1:True(=1)Reserved

*** Explanation of the ModeOverride2 bits:

b7 b6 b5 b4 b3 b2 b1 b0

b0:True(=1)Shortcycleprotectionoverridemode(ShortCyclingProtectionOverride)

b1:True(=1)Defrostoverridemode(Frostprotectionoverride)b2:True(=1)Windowopenoverridemode(Windowopenoverride)b3:True(=1)Dewpointreachedoverridemode(Dewpointoverride)b4:True(=1)Reservedb5:True(=1)Reservedb6 True(=1)Configurationfaultoverridemode(Configurationerroroverride)b7:True(=1)Alarmoverridemode(Alarmoverride)

† All bits are reserved

Note: If the “Alarm” or “Configuration fault” override mode is in progress the controller operating will be SATISFIED.

6.5 - Initialising a controller with its default parameters

To restore the default parameters in the NTC, the procedure below must be followed:a. Cut the power supply to the NTC.b. Join terminals 7, 8 and 9 on connector J and set them to a

potential of 0 V.c. Restore the power supply to the NTC.d. Wait until you see a slow blinking of the red LED of the

NTC and disconnect the power supply.e. When the NTC is re-energised, it will be initialised with

the following default parameters: - The controller address will have been replaced by the

default address. - All factory and configuration parameters will have

been restored to the default.

6.6 - Restarting a controller after a mains power failure

Following a mains power cut the controller restarts in the occupation mode it had before the power went off. Timetable parameters are reinitialised at their default values. No actuators or variables are overridden.

6.7 - Frequently asked questions

The list below shows the main problems that can occur, as well as the main corrective actions:

Symptoms - possible cause of the problem

The list of the cause of the problems is not exhaustive.

The controller is always in the defrost modea. Incorrect controller configuration; verify the normally

open or normally closed status of the window contact.b. One of the controllers with a master/slave configuration

has detected an open window.

The correct operation LED does not blink a. The board supply is defective.b. The board fuses are defective.

The electric heater command does not worka. Incorrect controller configuration; verify the configuration

of the “ElHeater” parameter in the “Factory1” table (see chapter “Configuring the FACTORY parameters”).

b. The electric heater safety device has tripped (override mode).

The user interface does not display any informationa. Incorrect controller configuration; verify the “UItype“

parameter in the “TCUI” table (see chapter “Configuring the SERVICE parameters”).

b. The connection between the user interface and the controller is defective.

Communication defect with the controllera. Check the connections.b. Verify the controller address (the default number of the

controller bus is 0).c. Verify the communication speed of the controller or the

Carrier tool.d. If there is a communication fault with the Carrier tool

verify that the RS3/RS485 converter can communicate at 38400 bauds, when the controller communicates at 38400 bauds.

IMPORTANT: The control system is a communicating system that can start up several important devices. It is therefore recommended to pay special attention to the connections and to the communication bus routing in the installation.

7 - ENVIRONMENTAL INFORMATION

This product complies with the requirements of the European directive 00/95/EC of 7/01/003 concerning the restriction of the use of hazardous substances.

OrderNo.:13616-76,02.2008.SupersedesorderNo.:13616-76,12.2007. Manufacturer:CarrierSCS,Montluel,FranceManufacturerreservestherighttochangeanyproductspecificationswithoutnotice. PrintedintheNetherlands.