1. Manuals
  2. Brands
  3. Exhausto Manuals
  4. Control Systems
  5. VEX200 series
  6. Basic instructions

Exhausto VEX200 series Basic Instructions

Exact control system
Hide thumbs Also See for VEX200 series:
Table of Contents

Advertisement

Quick Links

3003246-2014-05-21
EXact Control System
Basic instructions for the VEX200 series
OK
EXHAUSTO
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
OK
Esc
EXHAUSTO
Tel. +45 65 66 12 34
Fax +45 65 66 11 10
exhausto@exhausto.dk
www.exhausto.dk
EXact_VEX200
Original instructions

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VEX200 series and is the answer not in the manual?

Questions and answers

Related Manuals for Exhausto VEX200 series

Summary of Contents for Exhausto VEX200 series

  • Page 1 EXact_VEX200 3003246-2014-05-21 EXact Control System Basic instructions for the VEX200 series EXHAUSTO EXHAUSTO Original instructions EXHAUSTO A/S Tel. +45 65 66 12 34 Odensevej 76 Fax +45 65 66 11 10 DK-5550 Langeskov exhausto@exhausto.dk www.exhausto.dk...
  • Page 2 3003246-2014-05-21 Menu structure 2/100...

  • Page 3: Table Of Contents

    3003246-2014-05-21 Symbols and software version Symbols used in these instructions................5 Software version......................5 Software version .......................5 2. User mode 2.1. HMI panel........................6 2.2. Display icons......................7 3. Operation, access codes and selecting language 3.1. Using the HMI panel....................9 3.1.1. Using keys within the menus................9 3.2.
  • Page 4 3003246-2014-05-21 Menu 3.1.8 - Temperature limits for supply air and room........45 Room temperature limits..................46 Menu 3.1.9 - Cooling/heat pump unit ..............46 Menu 5 - Time and weekly plan.................47 Menu 5.1 - Date and time..................47 Menu 5.2 - Weekly plan ..................48 Menu 7 - Safety functions..................49 Menu 7.1 - Fire alarm....................49 Menu 7.2 - Frost protection of HCW ...............50...

  • Page 5: Symbols And Software Version

    Symbols and software version 3003246-2014-05-21 Symbols and software version Symbols used in these instructions Prohibition symbol Failure to observe instructions marked with a prohibition symbol may result in serious or fatal injury. Danger symbol Failure to observe instructions marked with a danger symbol may result in personal injury and/or damage to the unit.

  • Page 6: User Mode

    Machine Interface panel Display Browse menu or set value Activate menu/confirm key Browse menu or set value mode EXHAUSTO If the front cover is extended, push it back in. The extra keys are for service tech- nician use only. 6/100...

  • Page 7: Display Icons

    User mode 3003246-2014-05-21 2.2 Display icons Icon Description Manual operation Timer overridden until next changeover in the timer schedule Timer, current indoor air quality level is comfort Timer, current indoor air quality level is economy Timer, current indoor air quality level is standby Timer, VEX has stopped Timer, no changeover times defined in timer schedule BMS-controlled operation...
  • Page 8 User mode 3003246-2014-05-21 Icon Description Summertime Wintertime No communication on the external BUS or communication between the VEX and HMI is disconnected Fire alarm. Closed circuit open and the pre-set fire alarm function activa- Fire! Startup: Web server accessing database. The icon is displayed until the HMI panel is ready for use.

  • Page 9: Operation, Access Codes And Selecting Language

    Operation, access codes and selecting 3003246-2014-05-21 language 3. Operation, access codes and selecting language 3.1 Using the HMI panel Keys for user mode or service mode HMI panel ready for every- HMI panel ready for service mode day use Display Service key cover 3.1.1 Using keys within the menus Keys...

  • Page 10: Access Codes For Technician And Service Menus

    1111 ● The code for technician mode is1111 (some menus are hidden or read-only). EXHAUSTO recommends this mode is used for normal service tasks ● The code for specialist mode is 3142 (full ac- cess to all menus).

  • Page 11: Important When Servicing

    Operation, access codes and selecting 3003246-2014-05-21 language 3.3 IMPORTANT when servicing Do not open the service doors before the supply voltage has been disconnec- ted at the isolation switch. The isolation switch is positioned on the left side of the connection box on top of the unit. Weekly plan It is important to set ventilation to OFF when the weekly plan is active:...

  • Page 12: Auxiliary Service Panel

    Operation, access codes and selecting 3003246-2014-05-21 language BMS unit or Web If BMS or Web server controls are used, they could override the server OFF function and the VEX may start up irregularly. To disconnect the BMS or WEB server connection, you must remove the plug from the connection board.

  • Page 13: Menu 3.2 - Selecting Language

    Operation, access codes and selecting 3003246-2014-05-21 language Menu 3.2 - Selecting language 3.2 General Main menu 3 Settings Operating mode > Date and time > Unit > Operating readings > Language > English General > Settings > Reset settings > VEX configuration >...

  • Page 14: Menu 3.2 - Reload Database

    Operation, access codes and selecting 3003246-2014-05-21 language Menu 3.2 - Reload database Selecting "Reset settings" resets the user settings. See the menu guide for details of which menus are affected. Database reloads Initialising Loading DB names Menu 3.6 - Web server Contact the network administrator for information on the correct IP address, etc.

  • Page 15: Menu 3.7 - Backup/Restore

    Operation, access codes and selecting 3003246-2014-05-21 language Menu 3.7 - Backup/restore It is recommended that a backup copy of the VEX settings is made and saved on a secure media. See the individual backup guidelines in the diagram: Backup via the HMI panel ●...

  • Page 16: Starting Unit Operation

    Starting unit operation 3003246-2014-05-21 4. Starting unit operation The Modbus connectors must not be connected or removed while the units are powered up. Both Modbus units must be switched off before making changes, otherwise the units may be damaged. During commissioning, it may be necessary to work with the control system boxes open.

  • Page 17: Start Configuration

    Starting unit operation 3003246-2014-05-21 Start configuration Step Action Check that the correct configuration for the VEX has been selected at the factory via menu 3.3. Check that all accessories have been configured in menu 3.4 If a CO sensor is installed, check in Menu 3.1.2.1 "CO compensa- tion"...

  • Page 18: Menu 3.4 - Accessories

    ● None Cooling unit Options: ● CH ● MXCU (external cooling unit) ● CCW (cold water coil) ● CU (EXHAUSTO cooling unit) ● None Filter detection Should only be changed when sensors for detecting filter soil- ing are retrofitted. Options: ●...

  • Page 19: Menu 3.4 Connecting Heating And Cooling Units

    Starting unit operation 3003246-2014-05-21 Line in Menu 3.4 Factory-set and Comments should not be changed. Activation of external tempera- ture sensor and selection of type. Options: ● TS DUCT ● TS ROOM ● None Activation of CO sensor Op- tions: ●...

  • Page 20: Menu 3.5 Bms

    Starting unit operation 3003246-2014-05-21 Menu 3.5 BMS Menu 3.5 - BMS 3.5 BMS BMS > None Line in Menu 3.5 Comments Configuration > Activating override control system BMS Op- tions: ● None ● LON ● Modbus ● MTCP ● BACnet MSTP ●...

  • Page 21: Menu 1 - Selecting Operating Mode

    HMI panel or the Web server Timer The unit is controlled automatically via a fixed weekly plan Note during com- EXHAUSTO recommends that the operating mode be set to Manual during com- missioning missioning and changed to Timer operation when complete. NB: for manual When the unit is operating in Manual air quality level, the temperature set point (Temp.
  • Page 22 Starting unit operation 3003246-2014-05-21 Method Meth- Description Following parameters are Menu od no. (1-8) ● Balance Manual con- Constant speed 3.1.1 Operating settings trol IAQ. levels > Manual control of fan speed Temp. reg. > Supply air Air reg. > Balance >...

  • Page 23: Menu 3.1.1 - Operating Settings Balance

    Starting unit operation 3003246-2014-05-21 Method Meth- Description Following parameters are Menu od no. (1-8) ● Supply airflow values Constant pressure regulated 3.1.1.4 Constant pressure supply air with slave-control- for maximum and mini- Supply air: led extract air mum ventilation Setp. max. > 1000Pa Setp.

  • Page 24: Menu 3.1.1.5 Regulators

    Starting unit operation 3003246-2014-05-21 Example of balance The examples show a unit with manual fan control and balances of 0.80 and 1.20 respectively. Range The required airflow is outside the unit’s normal operating range balanced unbalanced Less than 1 = less supply air - Greater than 1 = less extract air Note for methods 3, Balance is not active for air regulation methods 3, 4, 7 and 8.

  • Page 25: Menus 3.1.1.1.1 To 3.1.1.1.4 Configuring The Selected Indoor Air Quality Levels

    Starting unit operation 3003246-2014-05-21 Kp and Ti settings should only be changed by persons trained in com- missioning ventilation systems. If the following is selected Permitted operations Technician mode (code 1111) Read the settings for the various regulators Specialist mode (code 3142) Set Kp and Ti for the various reg- ulators Menus 3.1.1.1.1 to 3.1.1.1.4 Configuring the selected indoor air quality levels...

  • Page 26: Menu 3.1.1.1.X - Cooling Relative Start

    Starting unit operation 3003246-2014-05-21 Menu 3.1.1.1.x - Cooling relative start Definition This value determines when cooling must start in relation to the relative tempera- ture. Low value = narrow temperature regulation range, leading to a comfortable indoor climate. High value = wider temperature regulation range, which provides cooling energy savings.

  • Page 27: Menu 3.1.1.1.X - Heating Absolute Start

    Starting unit operation 3003246-2014-05-21 Example If Cooling abs. start is set to 24°C, the cooling unit will first start to operate when the temperature exceeds 24°C, even though the daily user has set the required room temperature to 21°C. Menu 3.1.1.1.x - Heating absolute start Definition This value determines when heating must start in relation to the absolute temper- ature.
  • Page 28 Starting unit operation 3003246-2014-05-21 Max. and Min. may never be set closer to each other than 1K. If the following is se- temperature will be con- lected trolled by... supply air regulation supply air temperature Supply air temperature will never be higher than "Maximum"...

  • Page 29: Menu 3.1.1.1.X - Supply Air Regulation, Absolute

    Starting unit operation 3003246-2014-05-21 Menu 3.1.1.1.x - Supply air regulation, absolute 3.1.1.1.x xxxxxxx Air setpoint > °c Air setpoint,cool Temp. setpoint > 21,0 Abs. / Rel. > Absolute Cool rel. start > °c Cool abs. start > 26,0 Heat rel. start > °c Heat abs.

  • Page 30: Menu 3.1.1.1.X - Room Temperature Regulation, Absolute

    Starting unit operation 3003246-2014-05-21 Menu 3.1.1.1.x - Room temperature regulation, absolute 3.1.1.1.x xxxxxxx Air setpoint > °c Air setpoint,cool Temp. setpoint > 21,0 Abs. / Rel. > Absolute Cool rel. start > °c Cool abs. start > 26,0 Heat rel. start > °c Heat abs.

  • Page 31: Menu 3.1.1.1.X - Supply Air Regulation, Relative

    Starting unit operation 3003246-2014-05-21 Menu 3.1.1.1.x - Supply air regulation, relative 3.1.1.1.x xxxxxxx Air setpoint > Air setpoint,cool > Temp. setpoint > 21,0 °c Abs. / Rel. > Relativ Cool rel. start > Cool abs. start > Heat rel. start > -1,0 Heat abs.
  • Page 32 Starting unit operation 3003246-2014-05-21 the following will be adjusted..Minimum supply Temp. setpoint automatically adjusted to (Minimum supply air air temp. is set to temp. - 0.5K). And Heating rel. start to -0.5K. a value higher than (Temp. set- point + Heating rel.

  • Page 33: Menu 3.1.1.1.X - Room Temperature Regulation, Relative

    Starting unit operation 3003246-2014-05-21 Menu 3.1.1.1.x - Room temperature regulation, relative 3.1.1.1.x xxxxxxx Air setpoint > Air setpoint,cool > Temp. setpoint > 21,0 °c Abs. / Rel. > Relativ Cool rel. start > Cool abs. start > Heat rel. start > -1,0 Heat abs.
  • Page 34 Starting unit operation 3003246-2014-05-21 the following will be adjus- ted..Maximum room temp. is set to a value lower than (Temp. setpoint Cooling rel. + Cooling rel. start) but higher than (Temp. setpoint + 0.5K). start, automati- cally adjusted to (Maximum room temp.

  • Page 35: Menu 3.1.1 - Operation Settings - Temperature Regulation

    Starting unit operation 3003246-2014-05-21 Example 2: Minimum and Maximum room temp. limit Cooling rel. start and Heating rel. start: Menu 3.1.1 - Operation settings - Temperature regulation Select one of two temperature regulation methods: ● Supply air temperature regulation ● Room temperature regulation (temperature regulated until the desired level is reached) Temperature regulation is adjusted serially, using the following elements: 35/100...

  • Page 36: Compensation

    Starting unit operation 3003246-2014-05-21 ● Modulating heating coil(s). ● Modulating rotor speed ● Any external cooling unit and cooling recovery Select Select one of the following: ● Supply air regulation - Typically used when the unit serves several rooms with different loads (sunlight, people, machines). The temperature is regulated by the built-in temperature sensor in the supply air spigot.

  • Page 37: Menu 3.1.2.1 - Co2 Compensation

    Starting unit operation 3003246-2014-05-21 ● All compensation options can be connected and active at the same time, and may influence the control airflow ● CO and humidity compensation cannot be activated if air regulation method 8 is selected. Autostart with timer If the weekly schedule is at OFF and either the CO or the humidity level exceeds operation...

  • Page 38: Menu 3.1.2.2 - Humidity Compensation Of Airflow

    Starting unit operation 3003246-2014-05-21 Menu 3.1.2.2 - Humidity compensation of airflow Requirements A humidity sensor (RHB, MIO-RH, BMS) must be fitted in order to be able to select humidity compensation of the airflow. The sensor must be installed in the room in which you wish to make compensation, such as a bathroom.

  • Page 39: Menu 3.1.2.4 - Outdoor Compensation Of Airflow

    Starting unit operation 3003246-2014-05-21 Example Supply air temperature is Airflow... Lower than Minimum Equivalent to Minimum (or lowest) airflow Between Minimum and Start increases gradually between mini- mum airflow and the set airflow Greater than Start Equivalent to set airflow ●...

  • Page 40: Menu 3.1.3 - Temperature Compensation

    Starting unit operation 3003246-2014-05-21 Outdoor air temperature is Airflow... Lower than Minimum Equivalent to Minimum airflow Between Minimum and Start increases gradually between mini- mum airflow and the set airflow Greater than Start Equivalent to set airflow Menu 3.1.3 - Temperature compensation Outdoor air temperature compensation (menu 3.1.2.1) Function The set point for the supply air temperature can be increased if outdoor air tem-...

  • Page 41: Summertime Compensation (Menu 3.1.2.2)

    Starting unit operation 3003246-2014-05-21 Summertime compensation (menu 3.1.2.2) Function The room temperature can be raised if outdoor air temperatures are high. Summertime compensation is active only if room temperature regulation is activated for the indoor air quality level in Menu 3.1.1 (Operation settings -> Temp. reg. -> Room).

  • Page 42: Menu 3.1.4 + Menu 8.1 - Filter (Monitoring With Hour Counter)

    Starting unit operation 3003246-2014-05-21 Warning Set the supply air and extract air soiled-filter warning level here. Alarm Set the outdoor air and extract air replace-filter alarm level here. Menu 8.1 The same settings that can be configured in Menu 3.1.4 can be configured here. Menu 3.1.4 + Menu 8.1 - Filter (monitoring with hour counter) General Filter changes are monitored by an operating hours counter and indicated in whole...
  • Page 43 Starting unit operation 3003246-2014-05-21 ● Outdoor air temperature must be lower than the room temperature ● Prior to initiating night-time cooling, there must not have been any heating re- quirement within a time interval defined in the night-time cooling menu ●...
  • Page 44 Starting unit operation 3003246-2014-05-21 3.1.5 Night-time cooling 3.1.5.9 Permit night-time cooling Active period > Summer Comfort > Set point > 18°C Standby > Min. supply temp. > 10°C Economy > ΔT max. > ΔT min. > Start time > 00:00 Stop time >...

  • Page 45: Menu 3.1.6 - Cold Recovery

    Starting unit operation 3003246-2014-05-21 *The extract air temperature is always used, regardless of whether a room temperature sensor is installed for the system. Menu 3.1.5.9 - Per- mit night-time cool- is set to and the indoor air is activated quality level is Comfort/Standby/ included in the tim- night-time cooling...

  • Page 46: Room Temperature Limits

    Starting unit operation 3003246-2014-05-21 Example If a user selects maximum temperature in the user menu, the temperature will never exceed the value set in this menu. Supply air tempera- ture limits Setting Go to menu Lowest permitted supply air temper- 3.1.8 Range: 10.0 ...25.0°C ature...

  • Page 47: Menu 5 - Time And Weekly Plan

    Starting unit operation 3003246-2014-05-21 Min. COP Selection of desired efficiency level (COP) for heat pump operation (0.5 - 5) or de- selection of heat pump operation (OFF). See menu guide for recommended default values for heating coil. Heat pump opera- The menu is only active if a heating coil is configured.

  • Page 48: Menu 5.2 - Weekly Plan

    Starting unit operation 3003246-2014-05-21 Menu 5.2 - Weekly plan Plan type When "Timer" operation has been selected in Menu 1, the weekly plan must be configured. Select one of the following three plan types: Plan type Use when Program interval Different programs are re- Monday, Tuesday, Wednes- quired for different weekdays.

  • Page 49: Menu 7 - Safety Functions

    Starting unit operation 3003246-2014-05-21 Program example 5.2.2.1 Weekday 1 IAQ. level > Standby 1 Time of day > 06:00 2 IAQ. level > Comfort 2 Time of day > 07:30 3 IAQ. level > Economy 3 Time of day > 17:30 4 IAQ.

  • Page 50: Menu 7.2 - Frost Protection Of Hcw

    Starting unit operation 3003246-2014-05-21 Menu 7.2 - Frost protection of HCW Setting of frost pro- tection 7.2 Frost protection HCW Stop temperature > 15°C Warning temp. > 2,0K Number of restarts > Heat retention > 22°C RPT-X fitted > Menu line Function Action ●...
  • Page 51 Starting unit operation 3003246-2014-05-21 If the return water tem- and to- Response perature does the follow- ing within a five-minute num- period ber of starts Remains below the con- > 0 5 min: After 5 minutes, the MVM valve will stant heating temperature close and the CP will stop.

  • Page 52: Operation

    Operation 3003246-2014-05-21 5. Operation Menu 2 - Operating readings General All of the operating parameters can be read in Menu 2. _ _ _ is shown in the menu if a given unit is not fitted. Menu 2.1 - Air temperatures 2.1 Air temperature 2 Operating readings 2.1.1 Setp.

  • Page 53: Menu 2.1.1 - Set Points For Regulators

    Operation 3003246-2014-05-21 Example VEX200 + Chiller Diagrams See appendix 1 for VEX200 diagrams. Menu 2.1.1 - Set points for regulators This menu shows set points for: 2.1.1 Setp. regulators ● Room temperature regulator Room Heat recovery 10,0 ● Heat recovery regulator 10,0 Cooling unit 10,0...

  • Page 54: Menu 2.4 - Temperature Regulating Units

    Operation 3003246-2014-05-21 Menu 2.4 - Temperature regulating units The menu shows the current: 2.4 Temp. reg. enheder ● heat recovery Varmegenv. Eftervarmefl. ● Output of heating coil (if installed) VP enhed Køleenhed ● Output of heat pump unit (if installed) Kølegenvinding ●...

  • Page 55: Menu 2.7 - Cooling/Heat Pump Unit

    Operation 3003246-2014-05-21 2.7 Køle-/VP. Unit Trykgas tryk 0.00 Sugegas tryk 0.00 Trykgas temp. 0.00 °c Fremløb 0.00 °c Luftmæng. øget Balance Reduktion Blok start Tryktabsstigning CH størrelse Menu 2.7 - Cooling/heat pump unit The menu shows: ● Pressure gas pressure ●...

  • Page 56: Menu 2.11 - Hour Counters

    Operation 3003246-2014-05-21 Menu 2.11 - Hour counters The menu shows the hours counters for the fan motor and rotor motor. 2.11 Timers Supply air motor 266hr Extract air motor 1256hr Rotor 214hr Menu 2.12 - CO2/RH sensors (if mounted) The menu shows: 2.12 CO2/RH sensors ●...

  • Page 57: Menu 8 - Service

    Operation 3003246-2014-05-21 Menu 8 - Service Do not open the service doors before the supply voltage has been disconnec- ted at the isolation switch. The isolation switch is positioned on the left side of the connection box on top of the unit. Weekly plan It is important to set ventilation to OFF when the weekly plan is active:...

  • Page 58: Auxiliary Service Panel

    Operation 3003246-2014-05-21 BMS unit or Web If BMS or Web server controls are used, they could override the server OFF function and the VEX may start up irregularly. To disconnect the BMS or WEB server connection, you must remove the plug from the connection board.

  • Page 59: Menu 8.2 - Vdi 6022

    Operation 3003246-2014-05-21 Menu 8.2 - VDI 6022 Description VDI 6022 is a German hygiene standard. Menu 8.2 VDI 6022 Light > Filter pressure: Extract air filter Outdoor filter Light Switch light on/off (applies only to units ordered with lights. The light in the VEX switches off again when the menu is exited.

  • Page 60: Menu 8.3.3 Heating Unit

    Operation 3003246-2014-05-21 Menu 8.3.3 Heating unit For electric heating coil HCE: 8.3.3 Heating unit If there are no current faults for the heating coil ("Fault on unit" shown as "No"), Supply air forced start may be activated: Min. flow 0l/s Measured flow 0l/s ●...
  • Page 61 Operation 3003246-2014-05-21 Select "Yes" for calibration (automatically changes to "No" again when the MPTs 8.4 Calibration of MPT MPT1, P1 have been calibrated). MPT1, P2 MPT2, P1 MPT2, P2 MPT3, P1 MPT3, P2 MPT4, P1 MPT4, P2 MPT5, P1 MPT5, P2 Calibrate >...

  • Page 62: Alarms

    Alarms 3003246-2014-05-21 6. Alarms 6.1 Alarms and info (Menu 4) Alarms are shown in the event of unit faults or irregular operation ● Check the Current list (Menu 4) for alarm messages and refer to the list of alarms given at the end of these instructions. List of alarms Main menu 4 Alarm and info...
  • Page 63 Alarms 3003246-2014-05-21 Alarm code If an alarm has been generated, an alarm code is shown in the display in the format XXYYZ, where . XX = unit YY = fault code Z = category of alarm. See category table in this section. 16 alarms There can be up to 16 alarms on the "Current list".

  • Page 64: List Of Alarms

    Alarms 3003246-2014-05-21 6.4 List of alarms Main Control VEX Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 00 01 Control is powered Indicates when control is powered ● Unknown fault, call service 00 02 Unknown reboot of con- trol...
  • Page 65 Alarms 3003246-2014-05-21 Frequency converter 1 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the cable between frequency converter 1 and motor 01 01 One or more phases between frequency converter and motor is/ are short-circuited to...
  • Page 66 Alarms 3003246-2014-05-21 Frequency converter 1 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 01 15 4 Frequency converter Fault on frequency converter 1. hardware fault ● Upgrade software in frequency converter 1. 01 16 4 Frequency converter software version out of...
  • Page 67 Alarms 3003246-2014-05-21 Frequency converter 2 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the cable between frequency converter 2 and motor 02 01 One or more phases between frequency converter and motor is/ are short-circuited to...
  • Page 68 Alarms 3003246-2014-05-21 Frequency converter 2 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 02 15 Frequency converter Fault on frequency converter 2. hardware fault ● Upgrade software in frequency converter 2. 02 16 Frequency converter software version out of...
  • Page 69 Alarms 3003246-2014-05-21 Pressure transmitter 1 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 04 01 No modbus communi- cation to pressure act)/main board (EXact2) and MPT1.
  • Page 70 Alarms 3003246-2014-05-21 Pressure transmitter 3 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 06 01 No modbus communi- cation to pressure act)/main board (EXact2) and MPT3.
  • Page 71 Alarms 3003246-2014-05-21 Pressure transmitter 5 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 08 01 No modbus communi- cation to pressure act)/main board (EXact2) and MPT5.
  • Page 72 Alarms 3003246-2014-05-21 Pressure transmitter 7 Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the cable between the connection board and MPT7 10 01 No modbus communi- ●...
  • Page 73 Alarms 3003246-2014-05-21 Temperature sensor Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 11 01 TE11: TE11: ● Check the sensor's resistance complies with the actual temper- Extract air duct temper- ature.
  • Page 74 Alarms 3003246-2014-05-21 Temperature sensor Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 11 10 TE-RPT: TE-RPT: ● Check the sensor's resistance complies with the actual temper- Return water pipe tem- ature.
  • Page 75 Alarms 3003246-2014-05-21 Fire thermostats Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 12 01 BT40/50, FIRE: BT40/50, FIRE: In event of Fire: Follow the building emergency pro- Triggered fire alarm has cedure stopped VEX unit Fire thermostat triggered when there is no fire:...
  • Page 76 Alarms 3003246-2014-05-21 HC Alarm Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 14 01 Thermal fuse TSA70 HCE: activated Info is reset when the temperature falls below 70 14 02 Thermal fuse TSA70 is/ HCE:...
  • Page 77 Alarms 3003246-2014-05-21 HC Alarm Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 14 10 Return water temp. too HCW: ● Check that the hot water supply to the heating coil is functioning low.
  • Page 78 Alarms 3003246-2014-05-21 HC Sensor Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the sensor's resistance complies with the actual temper- 15 01 Supply air duct temper- ature sensor discon- ature.
  • Page 79 Alarms 3003246-2014-05-21 HC Controller Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 16 01 MHCW: Module config- Check the jumper in the CN6 connector on the heat control circuit ured incorrectly.
  • Page 80 Alarms 3003246-2014-05-21 Airflow/pressure Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 20 01 Airflow/pressure in ex- The unit provides airflow that is 25% below the set point ● Check the fan speed settings in indoor air quality level and the tract air duct airflow too high fan limits...
  • Page 81 Alarms 3003246-2014-05-21 sensor Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 21 01 No modbus communi- cation to MIO CO mod- act)/main board (EXact2) and MIO module.
  • Page 82 Alarms 3003246-2014-05-21 Humidity sensor RH Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 23 01 No modbus communi- cation to MIO-RH mod- act)/main board (EXact2) and MIO module.
  • Page 83 Alarms 3003246-2014-05-21 Cooling unit Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the low-pressure switch. The low-pressure switch cuts 25 01 Cooling unit stopped because of low evapo- out at 0.69 bar and re-engages at 2.21 bar.
  • Page 84 Alarms 3003246-2014-05-21 Cooling unit Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the sensor's resistance complies with the actual temper- 25 08 3 Outdoor air duct tem- perature sensor short- ature.
  • Page 85 Alarms 3003246-2014-05-21 External cooling unit (MXCU) control Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the jumper in the CN6 connector on the cooling control 28 01 Module configured in- correctly.
  • Page 86 Modbus Status Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy 34 01 SendModbusDataRe- Contact EXHAUSTO A/S ceive fail 34 02 SendModbusDataSend Contact EXHAUSTO A/S fail 34 03 SendModbusDataCon-...
  • Page 87 Alarms 3003246-2014-05-21 External control Troubleshooting Alarm description (See appendix 1: "Simplified diagrams" for the positioning of dampers, sen- sors, air directions, etc.) xx yy ● Check the modbus cable between the connection board (EX- 35 01 No modbus communi- cation to the MIO-AUX1 act)/main board (EXact2) and MIO module.
  • Page 88 ● Check connection between sensor and cooling/heat pump con- 43 07 Suction gas pressure sensor has been short- trol system. ● Contact EXHAUSTO service. circuited. ● Check connection between sensor and cooling/heat pump con- 43 08 Suction gas pressure sensor has interrupted.
  • Page 89 ● Turn off the power to the cooling/heat pump for one minute at the isolation switch on the cooling/heat pump. ● Then cancel the alarm via the HMI panel. 43 15 Unknown configuration. Chiller size has not been configured. Contact EXHAUSTO service. CH Status Troubleshooting Alarm description (See appendix 1: "Simplified diagrams"...

  • Page 90: Appendix 1 - Simplified Diagrams Simplified Diagrams

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 Appendix 1 - Simplified diagrams Simplified diagrams Simplified diagrams for unit with chiller For units with an installed chiller, see the simplified diagrams at the rear of the chiller instructions. VEX240-250-260-270L fan placement 1 TE22 MPT2 T-Cool...

  • Page 91: Vex240-250-260-270L Fan Placement 2

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 VEX240-250-260-270L fan placement 2 MPT1 TE11 TE12 1,1,A 1,2,A Extract air Exhaust air 2,2,A 2,1,A Supply air Outdoor air TE21 T-Cool T-heat TE22 RHX2M MPT2 VEX240-250-260-270L fan placement 2 MPT1 T-heat TE22 T-Cool TE21 2,2,A 2,1,A Outdoor air...

  • Page 92: Vex280L Fan Placement 1

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 VEX280L fan placement 1 T-Cool T-heat TE22 TE21 2,2,A 2,1,A Supply air Outdoor air MPT2 MPT1 1,1,A 1,2,A Extract air Exhaust air TE12 TE11 RHX2M 92/100...

  • Page 93: Vex280R Fan Placement 1

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 VEX280R fan placement 1 TE12 TE11 1,2,A 1,1,A Exhaust air Extract air T-Cool T-heat MPT2 MPT1 2,1,A 2,2,A Outdoor air Supply air TE21 TE22 RHX2M 93/100...

  • Page 94: Vex280L Fan Placement 2

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 VEX280L fan placement 2 TE11 TE12 1,1,A 1,2,A Extract air Exhaust air T-Cool T-heat MPT1 MPT2 2,2,A 2,1,A Supply air Outdoor air TE21 TE22 RHX2M 94/100...

  • Page 95: Vex280R Fan Placement 2

    Appendix 1 - Simplified diagrams 3003246-2014-05-21 VEX280R fan placement 2 TE22 T-heat T-Cool TE21 2,1,A 2,2,A Outdoor air Supply air MPT1 MPT2 1,2,A 1,1,A Exhaust air Extract air TE12 TE11 RHX2M 95/100...

  • Page 96: Appendix 2 - Temperature Resistance Table

    Appendix 2 - Temperature resistance table 3003246-2014-05-21 Appendix 2 - Temperature resistance table Temperature resistance table DC95 Temperature Resistance Temperature Resistance Temperature Resistance [°C] [Ohm] [°C] [Ohm] [°C] [Ohm] 324270 34464 5774 320139 32737 5545 299580 31107 5326 280471 29567 5116 262702 28113...
  • Page 97 Appendix 2 - Temperature resistance table 3003246-2014-05-21 Temperature Resistance Temperature Resistance Temperature Resistance [°C] [Ohm] [°C] [Ohm] [°C] [Ohm] 1390 840,6 528,5 1346 815,7 514,0 1303 791,6 500,0 1261 768,4 486,4 1221 746,0 473,2 1183 724,3 460,5 1146 703,3 448,2 1110 683,1 436,3...
  • Page 98 3003246-2014-05-21 98/100...
  • Page 99 3003246-2014-05-21 99/100...

Table of Contents