50AZ/UZ. for rooftop units. 50 Hz. Installation, operation and maintenance instructions

Transcription

1 50AZ/UZ PRODIALOG for rooftop units Control 50 Hz Installation, operation and maintenance instructions 1

2 CONTENTS 1 SAFETY CONSIDERATIONS General Avoid electrocution GENERAL DESCRIPTION General Abbreviations used HARDWARE DESCRIPTION General Electrical supply to boards Light emitting diodes on boards The sensors Connections without thermostat input Connections with thermostat input SETTING UP PRODIALOG PLUS CONTROL Local interface general features Unit start/stop control Menus PRODIALOG PLUS CONTROL OPERATION External thermostat control Start/stop control Indoor fan on/off control Calculating the room temperature Room temperature control point Heating/cooling mode Antifreezing mode Controlling room temperature Capacity limitation Night mode Capacity control Head pressure control Defrost function Electric or gas stages Controlling a hot water system valve Economiser Purge Controlling air quality Controlling humidity Master/slave assembly Fire protection DIAGNOSTICS TROUBLESHOOTING General Displaying alarms Resetting alarms Alarm codes

3 1 SAFETY CONSIDERATIONS 1.1 General Installation, startup and servicing of equipment can be hazardous if certain factors particular to the installation are not considered: operating pressures, presence of electrical components and voltages and the installation site (elevated plinths and builtup up structures). Only properly qualified installation engineers and highly qualified installers and technicians, fully trained for the product, are authorised to install and startup the equipment safely. During all servicing operations all instructions and recommendations which appear in the installation and service instructions for the product, as well as on tags and labels fixed to the equipment and components and accompanying parts supplied separately, must be read, understood and followed. Apply all standard safety codes and practices. Wear safety glasses and gloves. Use the proper tools to move heavy objects. Move units carefully and set them down gently. 1.2 Avoid 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: This equipment uses and emits electromagnetic signals. Tests have shown that the equipment conforms to all applicable codes with respect to electromagnetic compatibility. RISK OF ELECTROCUTION: Even when the main circuit breaker or isolator is switched off, certain circuits may still be energised, since they may be connected to a separate power source. RISK OF BURNS: Electrical currents cause components to get hot either temporarily or permanently. Handle power cable, electrical cables and conduits, terminal box covers and motor frames with great care. 2 GENERAL DESCRIPTION 2.1 General PRODIALOG Plus is a system for controlling rooftop air conditioners of the following types: Single and dual circuit Air conditioners and reversible heat pumps. PRODIALOG Plus maintains room temperature at the setpoint by controlling compressor startup and optional components. It controls operation of the indoor fan. In cooling mode it controls the operation of the fans to maintain the correct condensing pressure in each circuit. For heat pump units it controls and optimises the defrost cycles of each circuit in order to minimize the heating capacity reduction. Safety devices are constantly monitored by ProDialog to ensure unit protection. ProDialog also gives access to a Quick Test program covering all inputs and outputs. All PRODIALOG Plus controls can work in accordance with three independent modes: Local mode: the machine is controlled by commands from the user interface. Remote mode: the machine is controlled by remote contacts (voltfree contacts). CCN mode: the machine is controlled by commands from the Carrier Comfort Network (CCN). In this case, a data communication cable is used to connect the unit to the CCN communication bus. The operating mode must be chosen with the Start/Stop button described in section When the PRODIALOG Plus system operates autonomously (Local or Remote mode) it retains all of its own control capabilities but does not offer any of the features of the CCN network. 2.2 Abbreviations used In this manual, the refrigeration circuits are called circuit A and circuit B. The compressor in circuit A is labelled A1, the one in circuit B is labelled B1. The following abbreviations are used frequently: CCN : Carrier Comfort Network (the Carrier communication network) CCn : Operating type: CCN LED : Light Emitting Diode LOFF : Operating type: Local Off LOn : Operating type: Local On mode LSc : Operating type: Local On following a time schedule rem : Operating type: by remote contacts SCT : Saturated Condensing Temperature SIO : Sensor Bus (internal communication bus linking the basic board to the slave boards) SST : Saturated Suction Temperature tsta : Operating type: by remote thermostat TXV : Thermal Expansion Valve 3

4 3 HARDWARE DESCRIPTION 3.1 General Fig. 1 Control board In the event of a power supply interrupt, the unit restarts automatically without the need for an external command. However, any faults active when the supply is interrupted are saved and may in certain cases prevent a circuit or unit from restarting. 3.3 Light emitting diodes on boards All boards continuously check and indicate the proper operation of their electronic circuits. A light emitting diode (LED) lights on each board when it is operating properly. The red LED flashing for a 2 second period on the NRCP BASE board indicates correct operation. A different rate indicates a board or a software failure. On dualcircuit units or units equipped with optional board, the green LED flashes continuously on all boards to show that the board is communicating correctly over its internal bus. If the LED is not flashing, this indicates a SIO bus wiring problem. The orange LED flashes to show when all communication is via the CCN bus. 3.4 The sensors 10 7 Legend 1 CCN connector 2 Red LED, status of the board 3 Green LED, communication bus SIO 4 Orange LED, communication bus CCN 5 Remote master board customer control connection contacts 6 Remote slave board customer control connection contacts 7 Master board customer connection relay outputs 8 Slave board customer connection relay outputs 9 Master NRCP basic board 10 Slave NRCP basic board The control system consists of an NRCPBASE board for singlecircuit units and two NRCPBASE boards (a master and a slave board) for dualcircuit units. The units with the variablespeed fan option, humidification or air quality sensor use the slave board AUX1. All boards communicate via an internal SIO bus. The NRCPBASE boards continuously manage the information received from the various pressure and temperature probes. The NRCPBASE master board incorporates the program that controls the unit. The user interface consists of two display blocks with up to 25 LEDs and 16 buttons (according to unit type). It is connected to the main basic board and gives access to a full array of control parameters. 3.2 Electrical supply to boards All boards are supplied from a common 24 V a.c. supply referred to earth. NOTE: When connecting the power supply for the boards, preserve polarity, otherwise the boards may be damaged Pressure sensors Two types of electronic sensors (high and low pressure) are used to measure the suction and discharge pressure in each circuit. Thermistors Room temperature sensors Up to two sensors may be used. These sensors take into account either an average room temperature or minimum and maximum room temperatures, depending on the configuration. Optional sensor T56: this 10K sensor is fitted with: an offset slider for adjusting temperature setpoint. Moving the slider to the left (cold) allows temperature setpoint to be reduced by as much as 3 K; moving it to the right (warm) allows temperature setpoint to be increased by up to 3 K (in steps of ± 1 K). When the slider is in its central position there is no offset. a button for extending the occupied period from one to four hours depending on the occupied period extension value entered in the configuration menu (see section ). Optional sensor T55: this 10K sensor is fitted with a button for extending the occupied period. Supply air sensor The control system uses this to maintain a constant room temperature. This is a Carrier 10K sensor. Outdoor temperature sensor This Carrier 5K sensor controls the economiser, allows the gas heating stages to be used on the heat pumps and offsets the room temperature setpoint where this is appropriate. Water coil frost protection sensors These Carrier 5K sensors are used on units fitted with hot water systems. Defrosting termination sensor These Carrier 5K sensors are used by the defrosting function on reversible units. 4

5 Humidity sensors for the air conditioned space This controls room humidity. It is an optional sensor of the 0 10 V d.c. or 210 V d.c. type. Air quality sensor This controls room air quality. It is an optional sensor of the 0 10 V d.c. type. 3.5 Connections without thermostat input The contacts below are available at the user's terminal block on the NRCPBASE board (see Fig. 1). Some of them can only be used if the unit operates in remote operating type (rem). The following table summarises the connections at the user s terminal block. Outdoor air enthalpy sensor This optional sensor delivers a makebreak signal depending on the value for outdoor air heat content (enthalpy). The enthalpy setpoint has to be adjusted on the sensor itself. If the enthalpy value is high (closed signal) the economiser is disabled and lowered to its minimum setting. UNIT WITHOUT THERMOSTAT Description Connector/channel Alarm relay output J3 / CH24 circuit A Alarm relay output circuit B Contact 1: start/stop Contact 2: demand limit selection Contact 3: setpoint selection 1 Contact 4: setpoint selection 2 Connection to CCN J3 / CH24 J4 / CH8 J4 / CH9 J4 / CH10 J4 / CH11a J12 Board Master NRCPBASE Slave NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Remarks Indicates alarms, circuit A Indicates alarms, circuit B This contact is used for unit start/stop control. It is only taken into account if the unit is under remote operation control (rem). This contact is used for unit demand limit selection. These contacts are used for setpoint selection. They are only taken into account if the unit is in remote control operating type (rem). Note: Contact CH11b must be bridged. An RS485 bus is used for connection to the CCN. Pin +: signal + Pin G: ground Pin : signal Remarks Voltfree contact 24 V a.c. 48 V d.c. max, 20 V a.c. or V d.c., 3 A max, 80 ma min, external power supply. Connector: 4 pin WAGO pitch 3.5; One per board needed. 24 V a.c., 20 ma Connector: 8 pin Wago , pitch 3.5 Connector: 3 pin Wago /026000, pitch

6 3.6 Connections with thermostat input The contacts below are available at the user's terminal block on the NRCPBASE board (see Fig. 1). Some of them can only be used if the unit operates in thermostat operating type (tsta). The following table summarises the connections at the thermostat terminal block. UNIT WITH THERMOSTAT FOR ANY UNIT TYPE EXCEPT REVERSIBLE UNITS WITH ONE COMPRESSOR Description Alarm relay output circuit A Connector/channel J3 / CH24 Board Master NRCPBASE Remarks Indicates alarms, circuit A Alarm relay output circuit B Contact 1: contact G Contact 2: contact Y1_W2 (Y1 if Y1_W2 not present) Contact 3: contact W_W1 Contact 4: contact O_W2 Contact 5: contact Y_Y2 Connection to CCN J3 / CH24 J4 / CH8 J4 / CH9 J4 / CH10 J4 / CH11a J4 / CH9 J12 Slave NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Slave NRCPBASE Master NRCPBASE Indicates alarms, circuit B This contact is used for unit start/stop control. This contact is used to control a unit compressor. This contact is used to control an additional unit heating stage. This contact is used to control an additional unit heating stage in cooling only units or for cooling/heating mode selection in reversible units. Note: Contact CH11b must be bridged. This contact is used to control a unit compressor. An RS485 bus is used for connection to the CCN. Pin +: signal + Pin G: ground Pin : signal Remarks Voltfree contact 24 V a.c. 48 V d.c. max, 20 V a.c. or V d.c., 3 A max, 80 ma min, external power supply. Connector: 4 pin WAGO pitch 3.5; One per board needed. 24 V a.c., 20 ma Connector: 8 pin Wago , pitch 3.5; One per board needed. Connector: 3 pin Wago /026000, pitch 5.08 REVERSIBLE UNIT WITH ONE COMPRESSOR WITH THERMOSTAT ONLY Description Alarm relay output circuit A Connector/channel J3 / CH24 Board Master NRCPBASE Contact 1: contact G Contact 2: contact Y_Y2 Contact 3: contact W_W1 Contact 4: contact O_W2 Contact 5: contact Y1_W2 (Y1 if Y1_W2 not present) Connection to CCN J4 / CH8 J4 / CH9 J4 / CH10 J4 / CH11a J4 / CH9 J12 Master NRCPBASE Master NRCPBASE Master NRCPBASE Master NRCPBASE Slave NRCPBASE Master NRCPBASE Remarks Indicates alarms, circuit A This contact is used for unit start/stop control. This contact is used to control a unit compressor. This contact is used to control an additional unit heating stage. This contact is used for cooling/heating mode selection. Note: Contact CH11b must be bridged. This contact is used to control an additional unit heating stage. An RS485 bus is used for connection to the CCN. Pin +: signal + Pin G: ground Pin : signal Remarks Voltfree contact 24 V a.c. 48 V d.c. max, 20 V a.c. or V d.c., 3 A max, 80 ma min, external power supply. Connector: 4 pin WAGO pitch 3.5; One per board needed. 24 V a.c., 20 ma Connector: 8 pin Wago , pitch 3.5; One per board needed. Connector: 3 pin Wago /026000, pitch

7 4 SETTING UP PRODIALOG PLUS CONTROL 4.1 Local interface general features MAIN INTERFACE SUMMARY INTERFACE MAIN INTERFACE SUMMARY INTERFACE DUALCIRCUIT HEAT PUMP INTERFACE DUALCIRCUIT COOLING ONLY UNIT INTERFACE MENU BLOCK MENU BLOCK The local interface enables a number of operating parameters to be displayed and modified. The interface consists of two distinct parts: the main interface (left hand section) and the summary interface (right hand section). MAIN INTERFACE Main interface It gives access to all PRODIALOG PLUS data and operating functions. It consists of: A twodigit display showing the number of the item selected. A fourdigit display showing the contents of the item selected. LEDs and buttons for unit start/stop, menu selection, menu item selection and value adjustment. BUTTON NAME DESCRIPTION Menu Permits the selection of a main menu. Each main menu is represented by an icon. The icon is lit if active. Up arrow Down arrow Enter Start/stop Permits scrolling through the menu items (in the twodigit display). If the modification mode is active this button authorises increase of the value of any parameter. Permits scrolling through the menu items (in the twodigit display). If the modification mode is active this button authorises decrease of the value of any parameter. Gives access to the modification mode, validates a modification or displays expanded item description. Authorises start or stop of the unit in local mode or modification of its operating type. MAIN INTERFACE MENU LEDS LED NAME DESCRIPTION INFORMATION menu Displays the general operating parameters for the unit. kpa TEMPERATURES menu PRESSURES menu Displays the unit operating temperatures. Displays the unit operating pressures. SETPOINTS menu INPUTS menu Displays the unit setpoints and enables them to be modified. Displays the status of the unit digital and analogue inputs. OUTPUTS/TESTS menu Displays the status of the unit outputs and enables them to be tested. CONFIGURATIONS menu ALARMS menu ALARMS HISTORY menu Displays the unit configuration and enables it to be modified. Displays active alarms. Displays the history of the alarms. OPERATING LOG menu Displays the operating times and number of starts for the unit and the compressors. 7

8 The summary interface (right hand section) includes a mimic diagram of the unit, together with pushbuttons and LEDs. It gives quick access to the main operating parameters of the unit. SUMMARY INTERFACE LEDS LED INDICATION WHEN LIT Green LED: The unit is authorised to start or is already running Red LED: Lit: circuit A or unit shut down by alarm Flashing: circuit A or unit running with alarm present Red LED: Lit: circuit B or unit shut down by alarm Flashing: circuit B or unit running with alarm present Red LED: Optional air flow detection. Green LED: The indoor fan is running. Yellow LEDs: From top to bottom start/stop status of compressor A1 or B1. Flashing LED indicates that the circuit is in the protection or defrost mode (A or B). Green LED: The unit operates in heating mode. Green LED: The unit operates in cooling mode. SUMMARY INTERFACE PUSH BUTTONS BUTTON DISPLAY Blue button: evaporator leaving or entering air temperature in C Gray button: outdoor air temperature in C Control point (setpoint + offset) in C Press 1: circuit A/B discharge pressure in kpa Press 2: circuit A/B saturated condensing temperature in C Press 1: circuit A/B suction pressure in kpa Press 2: circuit A/B saturated suction temperature in C Press 1: compressor A1/B1 operating hours in h/10 or h/ Unit start/stop control The following operating types can be selected using the Start/Stop button: OPERATING TYPES 4 DIGIT DISPLAY DESCRIPTION LOFF Local Off. The unit is halted in local mode. LOn Local On. The unit is in local control mode and is authorised to start. LSc* Local On timer control. The unit is in local control mode. It selects the setpoint based on the time schedule. CCN* CCN. The unit is controlled by CCN commands. rem* Remote. The unit is controlled by remote control contacts. tsta* Remote by thermostat. The unit is controlled via external contacts by a thermostat. Legend * Displayed if the configuration requires it. Section 5.1 gives a more detailed description of the commands to start/stop the unit, analysed by operating type Stopping the unit in local mode The unit can be stopped in local mode at any time by pressing the Start/Stop button. TO STOP THE UNIT BUTTON ACTION 2DIGIT DISPLAY 4DIGIT DISPLAY Press the Start/Stop C LOFF button for less than 4 seconds (one short press is enough). If the button is t LOFF released, the unit stops without the need for further action Starting unit and selecting an operating type The unit can be started in local mode, or unit operating type can be changed at any time using the Start/Stop button. In the example that follows, the unit is stopped (LOFF) and the user wants to start the unit in local mode Description The unit start/stop can be controlled by one of the following methods: Locally on the actual unit (Local operating type) By remote control with the aid of user contacts (remote operating type) By CCN control with the aid of the CCN (CCN operating type) CHANGING THE OPERATING TYPE BUTTON ACTION Continually press the operating type selection button for more than 4 seconds. Hold down the Start/Stop button. The available operating types are displayed one by one until the button is released. 2DIGIT DISPLAY C 4DIGIT DISPLAY LOFF LOn LSc The main interface includes a Start/Stop button which can be used to stop or start the unit in the local operating type or to select the remote or CCN operating type. The available operating types are described in the following table. Release the Start/Stop button if the operating type you want is displayed (in this example LOn). "C" flashes in the 2digit display to show that the controller is awaiting confirmation. Press the Enter button to confirm the operating type selected (in this example: L On). "t" is displayed in the 2digit display to indicate the operating type selected. If the Enter button is not pressed soon enough, the controller will cancel the change and continue to use the previous operating type. t rem LOn LOn 8

9 4.3 Menus Selecting a menu The MENU button authorises you to select a menu from the 10 main menus that are available. Each time you press this button one of the 10 LEDs lights up in turn alongside each of the icons representing a main menu. The active menu is the one against which the LED is lit. If a menu is empty then its LED is not lit. To scroll quickly through the menus, hold the MENU button down Selecting a menu item The up and down Arrow buttons let you scroll through the menu items. Menu item numbers are displayed in the twodigit display. The item number increases or decreases every time you press the up or down Arrow button. The menu items that are not in use or incompatible with the configuration are not displayed. The value or status associated with the active item is displayed in the fourdigit display. To scroll quickly through the items, hold the up or down Arrow button down. The following example shows how to access item 3 in the Pressures menu. SELECTING A MENU ITEM OPERATION PRESS MENU LED ITEM NUMBER BUTTON 2DIGIT DISPLAY Press the MENU button until the LED marked PRESSURE lights. 0 kpa Press one of the Arrow buttons 1 until the twodigit display shows 3 (item number 3). kpa Modifying the value of a parameter/access to a submenu Press the Enter button for more than 2 seconds to enter the modification mode or to select a submenu. This lets you correct the value of an item or select a submenu with the aid of the up and down Arrow buttons (if you are authorised to overwrite the item concerned). When modification mode is activated, the LED of the main menu and the twodigit menu item display are flashing. Once the required value is obtained, press the Enter button again to validate the change or to access the submenu. The LED for the menu to which the item belongs as well as the twodigit display then stop flashing, indicating that modification mode no longer applies. In modification mode, the value to be modified increases or decreases in steps of 0.1 every time you press the Arrow buttons. Holding one of these buttons down increases the rate of increase or decrease. NOTE: The access to a submenu may require entering a password. This is automatically requested. See section The example below shows how to modify the value of item 1 in the Setpoint menu Expand display Pressing the Enter button causes a 23 character text expansion to be scrolled across the fourdigit display. All user menus provide an expansion of the current displayed parameters. If the expansion is complete the fourdigit display reverts to item value. This function can be inhibited through the User Configuration menu. 3 MODIFYING THE VALUE OF A PARAMETER OPERATION PRESS BUTTON MENU LED ITEM NUMBER ITEM VALUE 2DIGIT DISPLAY 4DIGIT DISPLAY Hold on the MENU button until the LED for SETPOINT lights. 0 Press one of the Arrow buttons until the twodigit display shows 1 (item number 2 unoccupied setpoint 2). The value for setpoint 2 is displayed in the fourdigit display (18.0 C in this example). Press the Enter button for more than 2 seconds to enable the value associated with item 2 to be modified. The Setpoint menu LED and twodigit display flash indicating that modification mode is active. Keep pressing the Down Arrow button until the value 17.7 is displayed in the fourdigit display. The Setpoint menu LED and twodigit display keep flashing Press the Enter button again to validate the change. The new setpoint is 17.7 C. The Setpoint menu LED and twodigit display stop flashing, indicating that modification mode no longer applies

10 MENU STRUCTURE MAIN MENUS STATUS TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION ALARMS ALARMS HISTORY ALARMS SUBMENUS MAINTENANCE [MAintEnAnCE] RUNTIME 1 [RuntiME 1] FACTORY [FACtorY] SERVICE [SErviCE] USER [USEr] SUBSUBMENUS MASTER/SLAVE [MAStEr SLAvE SERVICE 3 [SErviCE 3] SERVICE 2 [SErviCE 2] SERVICE 1 [SErviCE 1] BROADCAST [brodcast] HOUR + DATE [date] HOLIDAYS [HoLidAy] SCHEDULE 1 [SCHEduLE 1] USER 2 [USEr 2] USER 1 [USEr 1] HOLIDAYS 1 [HoLidAy 1] PERIOD 1 [PEriod 1] HOLIDAYS 2 [HoLidAy 2] PERIOD 2 [PEriod 2] HOLIDAYS 3 [HoLidAy 3] PERIOD 3 [PEriod 3] SUBSUBSUBMENUS HOLIDAYS 4 [HoLidAy 4] PERIOD 4 [PEriod 4] HOLIDAYS 5 [HoLidAy 5] PERIOD 5 [PEriod 5] HOLIDAYS 6 [HoLidAy 7] PERIOD 6 [PEriod 6] HOLIDAYS 7 [HoLidAy 7] PERIOD 7 [PEriod 7] HOLIDAYS 8 [HoLidAy 8] PERIOD 8 [PEriod 8] HOLIDAYS 15 [HoLidAy15] NOTE: The items in brackets show what is displayed on the user interface. HOLIDAYS 16 [HoLidAy16] 10

11 Menu tree structure MENU ITEM 0 STATUS Default display TEMP Room temperature 1 1 Modes Supply air temperature 2 3 Occupied/ unoccupied mode* Minutes left Outdoor temperature Saturated discharge temp. circuit A 4 5 Cooling/heating status* Compressor capacity in % INPUTS Indoor fan status Filter + additional heating stage status* Fire detection contact Pressure switch fault contact Saturated suction temp. circuit A Saturated discharge temp. circuit B* 6 Additional heating in %* Saturated suction temp. circuit B* 7 8 Demand limit status Setpoint Defrost temperature, circuit A* Defrost temperature, circuit B* 9 Active setpoint Offset sensor T56* 10 Control point Fault contact, compressor* Contact 1: on/off* Heating coil leaving water temperature* Contact 2: demand limit* Contact 3: setpoint selection* Contact 4: setpoint selection* Relative humidity in %* Air quality in ppm* Thermostat contact: G* 11 Thermostat contact: y1_w2* Control dead band Thermostat contact: y_y2* Room temperature 2* Room temperature Economiser status* Legend * Displayed if the configuration requires it ** Displayed if the alarm exists Not in use PRESSURES Discharge pressure circuit A Suction pressure circuit A Discharge pressure circuit B* Suction pressure circuit B* SETPOINTS Room temperature setpoint, occupied mode Room temperature dead band, occupied mode Room temperature setpoint, unoccupied mode Room temperature dead band, unoccupied mode Frost protection setpoint Cooling mode outside temperature for zero offset* Cooling mode outside temperature for max. offset* Cooling full offset value* Setpoint room humidity, occupied mode* Dead band room humidity, occupied mode* Setpoint room humidity, unoccupied mode* Dead band room humidity, unoccupied mode* Purge minimum outside temp.* Purge maximum outside temp.* Purge duration* Setpoint, air quality* OUTPUTS Compressor status Indoor fan status Outdoor fan status circuit A* Outdoor fan status circuit B* Additional heating stage status* Reversible valve status* Outdoor coil heater status* Power exhaust status* Antifire damper status* Humidifier status* Alarm status circuits A and B Economiser position* Speed, fan A in %* Thermostat contact: w_w1* Thermostat contact: o_w2* Speed, fan B in %* Hot water valve position in %* Local interface test CONFIG SUBMENU: User Configuration (USEr) SUBMENU: Service Configuration (SErviCE) SUBMENU: Factory Configuration (FACtorY) ALARMS Number of active alarms/resets** Active alarm code 1** Active alarm code 2** Active alarm code 3** Active alarm code 4** Active alarm code 5** ALARMS HIST Historic alarm code 1** Historic alarm code 2** Historic alarm code 3** Historic alarm code 4** Historic alarm code 5** Historic alarm code 6** Historic alarm code 7** Historic alarm code 8** Historic alarm code 9** Historic alarm code 10** RUNTIMES SUBMENU: Runtimes SUBMENU: Maintenance 11

12 4.3.5 Description of the Information menu INFORMATION MENU (3) ITEM FORMAT UNITS 0 ±nn.n C LOFF LOn LSc CCn rem tsta OFF ready delay StOPPing running tripout OvErridE defrost OCCUPIEd UNOCCUPIEd COOL HEAT StAndbY ALArM ALErt DESCRIPTION Automatic display mode. It cycles through the following displays: 1: Controlled space temperature: temperature of the water that the unit tries to maintain at the control point. 2: Unit operating type Local Off Local On Local On based on unit clock. CCN Control. Remote Control Thermostat control 3: Unit status Off: Unit is stopped and not authorised to start. Ready: Unit is authorised to start Delay: Unit is in delay at startup. This delay is active after the unit has been switched on. The delay can be configured in the User Configuration menu. Stopping: Unit is currently stopping. On: Unit is running or authorised to start. Fault shutdown. Limit: The operating conditions do not allow total unit operation. Defrost: One circuit is in defrost mode. 4. Unit occupied/unoccupied status Occupied: Unit in occupied mode Unoccupied: Unit in unoccupied mode 5. Heating/cooling operating mode Cooling: Unit operates in cooling mode Heating: Unit operates in heating mode Standby: Unit is in auto cooling/heating changeover mode, and is in standby 6: Alarm mode Alarm: Unit is totally stopped because of failure. Alert: Unit is in failure but not completely stopped. MAStEr SLAvE 1 [1] nn 2 [2] occu unoc Forc 3 nn.n minutes 4 [2] HEAt COOL StbY FrSt 5 nnn % 6 [2] nnn % 7 YES nnn Forc 8 SP1 S SP3 AUtO 9 ±nn.n C 10 ±nn.n C Forc 11 nn.n C 12 nn.n C 13 [2] YES No Legend 1 This item is masked when nil. 2 This item is displayed in certain unit configurations only. 7: Master/Slave status Master: The master/slave control is active and the unit is the master Slave: The master/slave control is active and the unit is the slave Active mode codes. Each active mode is displayed in turn. This Item is masked when nil. Pressing the enter button when a mode code is displayed causes a character text expansion to be scrolled across the fourdigit display. See the description in the following table This item indicates the current unit occupied/unoccupied mode. Occupied Unoccupied The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN. Startup delay. This item indicates the minutes left before the unit can be started. This delay at startup is always active after the unit has been switched on. The delay can be configured in the User Configuration 1 menu. Heating/cooling mode. This item indicates whether the unit is in cooling or heating. Displayed if the unit controls a boiler. Heating Cooling Standby: Unit is in auto cooling/heating changeover mode, and is in standby. Frost protection mode active. Total active capacity of compressors. Active additional heating stages. Unit demand limit based on the configuration. See section Yes demand limit active No demand limit inactive The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN. Setpoint select in local mode. This point is read/write accessible. Displayed only when the unit is LOFF or LOn operating type. SP1 = occupied setpoint S = unoccupied setpoint SP3 = frost protection setpoint AUtO = active setpoint depends on schedule 2 (setpoint selection schedule). See section & Active room temperature setpoint. Active temperature control point. This is the setpoint used by the controller to adjust the room temperature. Control point = active setpoint + offset. See section 5.5. The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN. Room dead band active in C This is the dead band used by the control to regulate the room temperature. See section The control uses two dead bands for the room temperature control: one is in the occupied period, the other in the unoccupied period. These two values can be configured by the user in the Setpoint Menu. Room temperature in C This is the room temperature calculated following actions taken by the room sensors. If the unit only has one room sensor, it is the value read by that sensor. If the unit has several optional temperature sensors, it depends on the configuration (see section ). It can be the middle, minimum or maximum value read by the sensors. Economiser status This item indicates if the economiser is active or not. See section 5.16 for the economiser control description. 12

13 DESCRIPTION OF OPERATING MODES (ITEM 1 OF THE INFORMATION MENU) MODE # MODE NAME DESCRIPTION 1 Thermostat mode Thermostat operating type: tsta. 2 Local mode Local operating type: Off: LOFF, On: LOn, On in accordance with time schedule: LSc. 3 Remote control mode Remote control operating type: rem. See section 3.5. for the description of the on/off contact. 4 CCN mode CCN network operating type: CCn. 5 Delay at startup active The delay at startup operates after the unit has been switched on. If the delay has not expired, the mode is active. The delay is configured in the User Configuration 1 menu. 6 Indoor fan cycling This mode is active when the indoor fan is shut down, when the setpoint is satisfied. Fan shutdown is configurable in User Menu 1. 7 Night condensing mode This function must be configured in User Configuration Menu 1. See sections 5.10 and The night mode is active. Fan runs at low speed (if permitted by operating conditions) and unit capacity can be limited. See section 5.9 & nd setpoint active The second setpoint is active. See section Frost protection mode selected Frost protection mode is active. In unoccupied periods, when the frost protection mode is selected, the unit is completely shut down. It is only allowed to start, if: Mode 5, 6, or 7 is active, and the room temperature is below the frost protection setpoint. The unit will remain on, until the room temperature again reaches 1.6 K above the frost protection setpoint. 10 Setpoint offset active Setpoint offset is active. In this mode the unit uses the offset function to adjust the room setpoint based on the outdoor temperature. Cooling only mode. To be activated the offset function must be configured (see section ). Mode 10 is only active, when the offset value calculated by the system is other than Economiser active The unitis in cooling and occupied mode and the outside temperature allows free cooling. The economiser damper is modulated to maintain the room setpoint. The compressors are not allowed to start as the economiser damper is not 80% open. 12 Purge active The unit returns to an occupied period that has to last two hours, and the outside temperature is inside the limits defined by the user (Setpoint Menu): the economiser is kept fully open for a configurable duration (Setpoint Menu, see section 4.3.8). To be activated, the purge function must be validated in the Configuration Menu (see section ). 13 Power exhaust active The power exhaust is kept fully open, as the economiser position has reached the power exhaust activation setpoint. 14 Humidification mode active Humidification mode is active, as the relative humidity is inside the humidity setpoint minus the dead band, divided by two (see section 5.19). 15 Air quality control active The economiser is modulated to maintain the room air quality at the setpoint. This function will be deactivated when it is not possible to keep the room temperature inside acceptable limits (see section 5.16). 16 Demand limit active Demand limit is active. In this case certain unit functions are deactivated (see section 5.9). Demand limit is controlled using a voltfree contact. 17 Gas activation threshold active The unit is in heating mode and only authorised to operate in gas mode, as the outside temperature is inside the gas activation threshold. Heat pumps only. See section Unit controlled by a master unit The unit is part of a master/slave connection, and a difference is detected between the heating/cooling status of the master and slave unit. In this case the slave unit is set to fan mode. 19 Smoke detection active The smoke detection contact is open. All unit functions are deactivated. The indoor fan is shut down. If the unit is equipped with an antifire damper, this is closed. If the unit is equipped with an economiser, this is kept 100% open. 20, 21 Defrost 20 = circuit A & 21 = circuit B. The unit is in heating mode, and the defrost sequence is active on the relevant circuit. 22 High enthalpy The unit is equipped with an outdoor enthalpy contact. This contact indicates an enthalpy value that does not allow the use of the economiser. 23 Smart start The unit is in Smart Start mode. See section , 25 Low suction temperature protection 24 = circuit A & 25 = circuit B. Protection for evaporator low suction temperature circuit is active. In this mode, circuit capacity is not authorised to rise and the circuit can be unloaded. 26, 27 High pressure protection 26 = circuit A & 27 = circuit B. The unit is in cooling mode. The circuit is in high pressure protection mode because the HP protection threshold has been exceeded. Circuit has been unloaded and the circuit capacity is not authorised to rise. See section , 29 Hot gas protection in heating mode 28 = circuit A & 29 = circuit B. The unit is in heating protection mode and hot gas discharge protection is active. In this mode, the circuit capacity cannot increase, and the circuit may be unloaded or go into defrost mode. 30, 31 Low suction temperature protection in heating mode 32 Additional stages active 30 = circuit A & 31 = circuit B. The unit is in heating mode and low suction temperature protection is active. In this mode, circuit capacity is not authorised to rise and the circuit can be unloaded or go into defrost mode. The unit controls additional stages, and these are operating. See section

14 4.3.6 Description of the Temperatures menu TEMPERATURES MENU [2] ITEM FORMAT UNITS COMMENTS 0 ±nn.n C Room temperature sensor 1 1 ±nn.n C Supply air temperature 2 ±nn.n C Outdoor temperature 3 ±nn.n C Saturated discharge temperature, circuit A 4 ±nn.n C Saturated suction temperature, circuit A 5 [1] ±nn.n C Saturated discharge temperature, circuit B 6 [1] ±nn.n C Saturated suction temperature, circuit B 7 [1] ±nn.n C Defrost temperature, circuit A 8 [1] ±nn.n C Defrost temperature, circuit B 9 [1] ±nn.n C Offset value sensor T56 10 [1] ±nn.n C Leaving water temperature, optional heating coil 11 [1] ±nn.n C Room temperature sensor 2 Legend 1 This item is displayed in certain unit configurations only 2 Access to this menu is readonly Description of the Pressures menu PRESSURES MENU [2] ITEM FORMAT UNITS COMMENTS 0 nnnn kpa Discharge pressure, circuit A. Relative pressure. 1 nnn kpa Suction pressure, circuit A. Relative pressure. 2 [1] nnnn kpa Discharge pressure, circuit B. Relative pressure. 3 [1] nnn kpa Suction pressure, circuit B. Relative pressure. Legend 1 This item is displayed in certain unit configurations only. 2 Access to this menu is readonly Description of the Setpoints menu SETPOINTS MENU [2] ITEM FORMAT UNITS RANGE COMMENTS 0 nn.n C Room temperature setpoint occupied mode 1 nn.n C Room dead band setpoint occupied mode 2 nn.n C Room temperature setpoint unoccupied mode 3 nn.n C Room dead band setpoint unoccupied mode 4 nn.n C Frost protection setpoint 5 [1] nn.n C Cooling mode outside temperature for zero offset* 6 [1] nnn C Cooling mode outside temperature for maximum offset* 7 [1] n C Cooling mode maximum offset value* 8 [1] n % Humidity setpoint occupied mode 9 [1] nnn % Humidity dead band occupied mode 10 [1] nnn % Humidity setpoint unoccupied mode 11 [1] nn % Humidity dead band unoccupied mode 12 [1] nn C Purge minimum outside temperature 13 [1] nn.n C Purge maximum outside temperature 14 [1] nn minutes 1 5 Purge duration 15 [1] nnnnn ppm Air quality setpoint 1 This item is displayed in certain unit configurations only. 2 All points contained in this table can be modified. * These parameters are only accessible when offset based on OAT or delta T has been selected in the User Configuration 1 menu. See section & Description of the Inputs menu INPUTS MENU [2] ITEM FORMAT UNITS COMMENTS 0 open/clos Indoor fan on/off status 1 open/clos Filter status clean/dirty 2 open/clos Smoke detector status 3 b1b2 Pressure switch protection status b1 = status pressure switch A 4 [1] b1b2 Compressor protection status b1 = status compressor A 5 [1] open/clos On/off contact status 6 [1] open/clos Demand limit contact status 7 [1] open/clos Status setpoint selection contact 1 8 [1] open/clos Status setpoint selection contact 2 9 [1] nnn % Relative humidity level 10 [1] nnnn ppm Air quality b2 = status pressure switch B b2 = status compressor B 11 [1] open/clos Outdoor enthalpy contact. Closed = high enthalpy, economiser in minimum position 12 [1] open/clos Thermostat contact G, on/off 13 [1] open/clos Thermostat contact Y1_W2 14 [1] open/clos Thermostat contact Y_Y2 15 [1] open/clos Thermostat contact W_W1 16 [1] open/clos Thermostat contact O_W2 1 This item is displayed in certain unit configurations only 2 Access to this menu is readonly. 14

15 The following table shows the thermostat output functions depending on the unit type used. G: indoor fan on/off. Y: compressor 1 on/off (singlecircuit unit) Y1: compressor 1 on/off Y2: compressor 2 on/off W: additional heating stage 1 on/off W2: additional heating stage 2 on/off O: cycle reversing valve on/off (heat pump units) Thermostat Singlecircuit cooling only unit Twincircuit cooling only unit Singlecircuit reversible unit Twincircuit reversible unit outputs/ Output name Output function Output name Output function Output name Output function Output name Output function rooftop thermostat thermostat thermostat thermostat thermostat thermostat thermostat thermostat inputs G G G G G G G G G Y1_W2 Y1_W2 Y1 Y1_W2 Y1 Y1_W2 W2 Y1_W2 Y1 Y_Y2 NC NC Y_Y2 Y2 Y_Y2 Y Y_Y2 Y2 W_W1 W_W1 W W_W1 W W_W1 W W_W1 W O_W2 O_W2 W2 O_W2 W2 O_W2 O O_W2 O nc: not connected Description of the Outputs/Tests menu General This menu displays the status of the controller outputs. Moreover, when the machine is fully stopped (LOFF) the outputs can be activated for manual or automatic tests (the access to the tests is password controlled) Menu description OUTPUTS STATUS & TESTS MENU [2] [3] ITEM FORMAT UNITS DESCRIPTION 0 b 1 b 2 test FAIL Good 1 On OFF test FAIL Good Forc 2 StoP LOW HIGH test 3 StoP LOW HIGH test 4 b 1 b 2 b 3 test 5 [1] b 1 b 2 test Compressor command status b 1 = compressor A1 b 2 = compressor B1 In test mode, the Arrow buttons display 01 and 10 in succession, so as to force the status of the compressor outputs in turn. During the test phase, power to the compressor is switched on for 10 seconds only. It is then not possible to restart the compressor for a further 30 seconds. When the test is completed the following is displayed: Fail: displayed if the test has failed because the compressor was not started or run in reverse rotation. Good: displayed if test was successful Indoor fan control status. On: the fan operates OFF: the fan is shut down Forc: this item is displayed only when the unit is stopped locally (LOFF). Selecting this item authorises turning ON the indoor fan with no delay and for an unlimited length of time. The indoor fan will remain on until any button of the user interface is pressed: it is then immediately stopped. During the test phase the fan supply is set to on for only 10 seconds. When the test has been completed, the following display is shown: Fail: displayed if the test has failed because the fan was not started Good: displayed if test was successful Twospeed fan status, circuit A In test mode this item permits testing the fan speeds. Stop = fan is stopped Low = fan is in low speed High = fan is in high speed Twospeed fan status, circuit B In test mode this item permits testing the fan speeds. Stop = fan is stopped Low = fan is in low speed High = fan is in high speed Additional heating/gas stage status b 1 = stage 1 b 2 = stage 2 b 3 = stage 3 In test mode the arrow keys successively display 001, 010 and 100 to force the status of each additional stage in turn. This item is only displayed for units controlling additional electric heater stages. See section way reversing cycle valve status. In test mode, the arrow keys successively display 01 and 10, in order to authorise the test for each valve in turn. b 1 = valve circuit A b 2 = valve circuit B This item is only displayed for heat pump units. 15

16 OUTPUTS STATUS & TESTS MENU [2] [3] CONTINUED ITEM FORMAT UNITS 6 [1] b 1 b 2 test 7 [1] On OFF test 8 [1] On OFF test 9 [1] On OFF test 10 [1] b 1 b test 11 [1] nnn % test 12 [1] nnn % test 13 [1] nnn % test 14 [1] nnn % test 15 YES no test 1 This item is displayed in certain unit configurations only. 2 Testing authorised only if the unit is in Local Off and all compressors are off. 3 Password needed only for testing. Test displayed in turn with the item value during tests. DESCRIPTION Outdoor coil heater status In test mode the direction arrows successively display 01 and 10, in order to alternatively authorise the test of each heater. b 1 = heater circuit A b 2 = heater circuit B This item is only displayed for heat pump units. Power exhaust status In test mode this item permits testing the power exhaust. Fire damper status In test mode this item permits testing the antifire damper. The antifire damper option is not compatible with the economiser option. Humidifier status In test mode this item permits testing the humidifier output. Alarm output command status b 1 = alarm circuit A b 2 = alarm circuit B In test mode, the Arrow buttons display 01 and 10 in succession, so as to force each alarm output status in turn. Economiser position In test mode this item permits testing the economiser analogue control. Variablespeed fan circuit A In test mode this item permits testing the fan analogue control. Variablespeed fan circuit B In test mode this item permits testing the fan analogue control. Hotwater threeway valve position In test mode this item permits testing the threeway valve analogue control. Used for local interface test only. Lights or flashes all LEDs and blocks, so as to check that they are working properly Manual tests This function allows the user to test the outputs individually, if the machine is completely shut down (LOFF). To carry out a manual test use the arrow keys to access the output to be tested and press the Enter key (longer than 2 seconds) to activate the modification mode. The password is automatically requested, if it has not previously been verified. The Outputs/Test LED on the user interface begins to flash. Enter the desired test value and again press Enter to start the test. 'TESt' is displayed on the 4 digit display alternately with the value tested. The Outputs/Test LED stops flashing. Press the Enter key or an arrow key to stop the test Description of the configuration menu General This menu can be used to display and modify all configurations: Factory, Service and User. Only the User Configuration can be modified by the enduser. The Factory, Service and master/slave configurations are not described in this document. A configuration can only be modified if the unit is fully stopped (LOFF) Password A password must be entered in order to access the test function or to modify a configuration. It is automatically requested, if necessary: 'EntEr PASS' is displayed on the 4digit display and the configuration menu LED flashes, indicating that the modification mode is active. Press the arrow keys until the value '11' is displayed on the 4digit display. Press Enter to validate this. The configuration menu LED stops flashing. If the password is correct, 'Good' is displayed. If the password is incorrect, 'PASS incorrect' is displayed. The User password has a default value of 11. This value can be modified through the Service configuration. The password can be entered if the unit is fully stopped, otherwise 'ACCES denied' (access denied) will be displayed on the 4 digit display. The controller automatically deactivates the password after 5 minutes without activity (i.e. no buttons pressed) or after powering up. The menus User 1 [USEr 1] and User 2 [USEr 2] are passwordprotected. The other menus are directly accessible, except if item 6 of the User 1 menu (password for all configurations) has been validated. 16

17 SUBMENU USER CONFIGURATION ITEM USER 1 [USER1] USER 2 [USER2] DATE [date] SCHEDULE 1 [ScHEduLE 1MEnu] HOLIDAYS [HOLidAy MEnu] BROADCAST [BrodCASt] Return to previous menu Unit selection controlled by thermostat Frost protection mode selection in unoccupied mode Room temperature calculation type selection Indoor fan operation type selection Purge function selection Occupied period extension selection Smart Start factor Demand limit selection in cooling mode Demand limit selection in heating mode Demand limit selection in defrost mode Startup delay Setpoint offset selection, cooling mode Electric heating stage operation threshold Electric heating stage operation schedule Extended display selection Password for all user configurations Software version number Return to previous menu Night mode start hour Night mode end hour Night mode demand limit in % Number clock 1 CCN address CCN bus Return to previous menu Hour Day of the week Day and month Year Return to previous menu SUBMENU: Period 1 [PErIod 1] SUBMENU: Period 2 [PErIod 2] SUBMENU: Period 3 [PErIod 3] SUBMENU: Period 4 [PErIod 4] SUBMENU: Period 5 [PErIod 5] SUBMENU: Period 6 [PErIod 6] SUBMENU: Period 7 [PErIod 7] SUBMENU: Period 8 [PErIod 8] Return to previous menu SUBMENU: Holidays 1 [HOLidAy 1] SUBMENU: Holidays 2 [HOLidAy 2] SUBMENU: Holidays 3 [HOLidAy 3] SUBMENU: Holidays 4 [HOLidAy 4] SUBMENU: Holidays 5 [HOLidAy 5] SUBMENU: Holidays 6 [HOLidAy 6] SUBMENU: Holidays 7 [HOLidAy 7] SUBMENU: Holidays 8 [HOLidAy 8] SUBMENU: Holidays 9 [HOLidAy 9] SUBMENU: Holidays 10 [HOLidAy 10] SUBMENU: Holidays 11 [HOLidAy 11] SUBMENU: Holidays 12 [HOLidAy 12] SUBMENU: Holidays 13 [HOLidAy 13] SUBMENU: Holidays 14 [HOLidAy 14] SUBMENU: Holidays 15 [HOLidAy 15] SUBMENU: Holidays 16 [HOLidAy 16] Return to previous menu Broadcast acknowledger selection Broadcast activation Outdoor temperature broadcast bus Outdoor temperature broadcast element Start month daylight saving time Start day daylight saving time Start hour daylight saving time Minutes to add End month daylight saving time End day daylight saving time End hour daylight saving time Minutes to subtract NOTE: The items in brackets show what is displayed on the user interface. SUBMENU PERIOD CONFIGURATION Item PERIOD 1 to 8 [PEriod X MEnu] 0 Return to previous menu 1 Start of occupied period 2 End of occupied period 3 Selection Monday 4 Selection Tuesday 5 Selection Wednesday 6 Selection Thursday 7 Selection Friday 8 Selection Saturday 9 Selection Sunday 10 Selection holidays CONFIGURATION USER [USEr] USER 1 USER 2 SCHEDULE 1 HOLIDAYS HOUR+DATE BROADCAST [USEr 1] [USEr 2] [SCHEduLE 1] [HoLidAy] [date] [brodcast] PERIOD 1 [PEriod 1] PERIOD 2 [PEriod 2] Menus Submenus Subsubmenus HOLIDAY 1 [HoLidAy 1] HOLIDAY 2 [HoLidAy 2] PERIOD 3 [PEriod 3] HOLIDAY 3 [HoLidAy 3] SUBMENU HOLIDAY CONFIGURATION Item HOLIDAYS 1 to 16 [HoLidAy X MEnu] PERIOD 4 [PEriod 4] HOLIDAY 4 [HoLidAy 4] Subsubsubmenus 0 Return to previous menu 1 Start month holidays PERIOD 5 [PEriod 5] HOLIDAY 5 [HoLidAy 5] 3 Start day holidays 4 Number of days, holidays PERIOD 6 [PEriod 6] HOLIDAY 6 [HoLidAy 6] NOTE: The items in brackets show what is displayed on the user interface. PERIOD 7 [PEriod 7] PERIOD 8 [PEriod 8] HOLIDAY 7 [HoLidAy 7] HOLIDAY 8 [HoLidAy 8] HOLIDAY 15 [HoLidAy 15] HOLIDAY 16 [HoLidAy 16] 17