Vent-Axia Sentinel Installation Operation & Maintenance
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Vent-Axia Sentinel Installation Operation & Maintenance

Totus 2 d-erv
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Sentinel
Totus 2 D-ERV
Installation, Operation & Maintenance
PLEASE RETAIN THESE INSTRUCTIONS WITH THE PRODUCT.
Stock Ref. N°
TOTUS2MINI
TOTUS2MINI/CP
TOTUS2MIDI
TOTUS2MIDI/CP
TOTUS2MAXI
TOTUS2MAXI/CP
Copyright © 2009 Vent-Axia Limited. All rights reserved.

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  • Page 1 Sentinel Totus 2 D-ERV Installation, Operation & Maintenance Stock Ref. N° TOTUS2MINI TOTUS2MINI/CP TOTUS2MIDI TOTUS2MIDI/CP TOTUS2MAXI TOTUS2MAXI/CP PLEASE RETAIN THESE INSTRUCTIONS WITH THE PRODUCT. Copyright © 2009 Vent-Axia Limited. All rights reserved.
  • Page 2 1. THESE UNITS MUST BE SITED AND CONNECTED IN ACCORDANCE WITH CURRENT IEE REGULATIONS, BS7671 This document covers the Sentinel Totus 2 D-ERV series (UK) OR THE APPROPRIATE STANDARDS IN YOUR detailed in the following table.

  • Page 3: Table Of Contents

    Appendix B: Options and Accessories Sentinel Totus 2 D-ERV ............... 4 Sentinel Totus ................63 Technical Specification Appendix C: Main Controller PCB Terminals Sentinel Totus 2 D-ERV Technical Specification ......6 Commissioning Record ..............6 Terminals ................... 64 Dimensions.................. 7 Installation Installing Your Energy Recovery Ventilation System ....11...

  • Page 4: Product Description

    Employing a range of sensors to manage the system, demand is typically sensed by PIR, temperature, humidity, air quality, carbon dioxide sensors or other types of Vent-Axia proprietary sensors (see Appendix B: Options and Accessories on page 63 for details).
  • Page 5 Internal Counter-flow Cell sensors Room Air Filter DC Motor Access Main External Entry Panel Panel Controller Ambient Air PCB Access Summer Bypass Heaters Panel Figure 2: Sentinel Totus 2 Maxi D-ERV Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 6: Technical Specification

    12 m max head, 25 m max horizontal distance, but 150 max head X distance Software Version For all other technical details, please see the Product Catalogue or our website at www.vent-axia.com. Commissioning Record Record the unit commissioning settings here.

  • Page 7: Dimensions

    Technical Specification Dimensions Model Dimensions (mm) Mini 1800 1920 1656 Midi 1900 2020 1290 1250 1315 1758 Maxi 1800 1925 1212 1130 Mini Midi Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 8 Technical Specification Maxi Figure 3: Unit Dimensions for Mini, Midi & Maxi Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 9 Technical Specification Filter and Control Box Access Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 10 Technical Specification MAXI Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 11: Installation

    1. Connect Switches and Sensors 2. Connect the Power Supply 3. Connect the Commissioning Interface Switching On/Off FOR DETAILS OF EACH STEP, 1. Switch On SEE THE FOLLOWING HEADINGS Figure 4: Installation Overview Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 12: Before Installing Your Equipment

    If found to be less than 2 M , the unit should be left in a warn dry room for 24 hours and re- measured before applying mains voltage. If the resistance is still less than 2 M , there is likely to be a fault. The unit must be stored in clean, dry conditions. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 13: Physical Installation

    Unit to be Level in All Directions Mount on 4 blocks placed under mounting brackets on level unit. Minimum of 150mm from Floor Floor Level Figure 5: Unit Roof Mounted for Mini & Midi (Recommended) Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 14 Position each cowl over the flange around each opening, as shown in the figure below. Use sealant to seal the flange to the cowl to maintain the internal pressure and prevent water ingress. Secure each cowl to the chassis using 6 x no. 10 self-tapping screws. Drill holes ( 4) Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 15 On the opposite side of the unit a gap of 75 mm should be left to enable someone to be able to release the thumb catches when removing the top or bottom covers (see Cover Removal/Replacement on page 47). Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 16 Ensure the unit is installed in such a way to allow access to the control unit and connectors check the dimensions of the unit detailed in the technical specification. Note that the control door requires a 350 mm space in order to open fully. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 17: Electrical Installation

    The terminal connections provided by the Main Controller PCB for connecting to switches, sensors, etc., are shown below. Other terminals are connected as required at the factory. DO NOT disconnect any factory fitted connections. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 18 0V dc: Zero volt or common line I/P: 24V dc input from switch, etc. (10V dc minimum required) 24V dc: Output to switch, etc. Figure 10: Main Controller PCB Terminal Connections Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 19 Remove the unit Control Panel cover by unscrewing the six securing screws. Figure 11: Control Panel Cover Removal Remove the High Voltage Cover by unscrewing the two securing screws. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 20 Figure 14: Single-phase Terminal Connections Connect the other end of the power cable to a power supply outlet or distribution board. When replacing the cover ensure the earth bonding lead is attached to the cover. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 21 Gland Plate Figure16: Power Supply Connections Connect the other end of the cable to the main power supply outlet. • Ensure the unit remains isolated until all external connections are made. • Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 22 Re-assemble the front and rear halves of the Commissioning Interface Casing by first re-engaging the two lugs and slots along the top. Then, press together the bottom edges of the two halves, which should close with an audible click. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 23: Switching On/Off

    Ensure that all top and bottom covers are fitted and properly secured (see Cover Removal/Replacement on page 47). Switch on the power at the mains outlet feeding the Sentinel unit. At the unit’s cable entry panel, turn the isolator switch to position 1 (ON).

  • Page 24: Commissioning

    A 3-way, multi-colour LED on the Commissioning Interface displays the status of the unit. A similar LED is provided on the side of the unit to provide a local indication of the unit status in the event that the Commissioning Interface is located remotely. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 25 (Enter) push-button for 5 seconds to access the Commissioning Screens. Note All commissioning settings are permanently stored in non-volatile memory and, therefore, retained in the event of a shutdown or power failure. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 26: Commissioning Screens

    When the unit is switched on (see Switching On on page 23), the following Commissioning Interface screens are available for monitoring and configuring the unit (default values shown where applicable). See page 40 Not described in this document Figure 20: Commissioning Interface – Commissioning Screens Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 27 (Set) again and then use the (Up) and (Down) push-buttons to adjust the time setting in seconds (30 - 180). Press (Set) again to enter the new setting and move down to the next screen. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 28 The heaters are sized so that the unit will operate down to -7C at full air flow before frost is likely to start. The air flows will continue operating at the settings called for by the control system. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 29 (Up) and (Down) push-buttons to select the type of filter fitted (Industrial (091), Urban (182) or Rural (365)). Press (Set) again to enter the new setting and move down to the next screen. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 30 BMS – a manually selectable option. In this mode, an external Building Management System is used to proportionally control the unit fan speed. When this mode is selected, the On Off Control mode is automatically set to BMS Enable. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 31 (maximum speed -5%)). The minimum that may be set is 1%, if Heater Run On is enabled. Press (Set) again to enter the new setting and move down to the next screen. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 32 ITC Passband (02 to 50). This is the range of temperatures that proportionally control the motor speed from minimum to maximum. This concept applies to the CO and humidity proportional control too. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 33 (Set) and then use the (Up) and (Down) push-buttons to adjust the CO2 Passband (200 to 2000ppm). This is the range of CO2 that proportionally control the motor speed from minimum to maximum. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 34 Overheat – cools the room when triggered by a high extract air (T3) at 3 pm, then runs at night when intake air (T1) is cool. This requires switch input 4 (central heating) to be connected. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 35 (Set) again enables you to select a temperature (in degrees C) to initiate the bypass (10 to 30) using the Up and Down push-buttons. This is the target room (internal) temperature. Comfort Settings Bypass Int Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 36 (Down) push-buttons and then press and hold the (Enter) push-button for 5 seconds. Press and hold the (Enter) push-button to exit the commissioning screens and show Sentinel HR Test. Press the (Down) and (Enter) push-button simultaneously to display the Code Set screen.

  • Page 37: The Settings Code

    (Enter) push-button simultaneously from the Settings Code screen, or (Down) and (Enter) push-button simultaneously from the Sentinel HR Test screen. This screen enables the settings code to be changed on a replacement Main Controller PCB, as an alternative to re-entering the settings using the commissioning screens to re-establish the unit configuration, or where multiple units need to be commissioned at the same site with the same settings.

  • Page 38: Writing Down The Settings Code

    On completion of commissioning, write down the settings code, corresponding to the chosen settings, on the Installer Notice label provided inside the Control Panel and on the Technical Specification on page 6 of this manual. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 39: Default Settings

    Maximum Speed Flow Balance Int 100% , Ext 100% Comfort Settings Comfort Enable (24C), Bypass Enable (21C), Ext Temperature (15C), Overheat Enable (summer overheat trigger 30C and summer overheat stop 20C) Settings Code Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 40: Restoring Settings

    Restore Settings screen is displayed (approximately 12 seconds). To leave the Restore Settings screens at any point with settings unchanged, press the (Enter) push-button. This Restore Settings screen enables you to enable the restore settings mode. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 41 Factory Test Code? 123 Press (Set) and then use the (Up) and (Down) push-buttons to enter the code. Press (Set) again to enter the new setting and proceed with the Factory Test. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 42: Operation And Monitoring

    Operation and Monitoring About Operation and Monitoring When the Sentinel Totus 2 unit has been installed and commissioned (see the previous sections) it should require no further intervention in order to operate, unless external switches are used to control on/off/boost, etc, or BMS control requires user action.
  • Page 43 Day (Tue) which could be Sun, Mon, Tue, Wed, Thu, Fri, or Sat. Time (07:11) in hours: minutes (24-hour clock). Intake Temperature (08) measured by thermistor T1, see Figure 1: Sentinel on page 4 & 5. Extract Temperature (23C) measured by thermistor T3, see Figure 1: Sentinel on page 4 & 5.
  • Page 44 The bottom line displays status information, see Status Display . Status Display The bottom line of the Mode/Speed/Status screen always displays unit status. Any of the following messages may be displayed: Sentinel HR Off Sentinel HR On Dampers Opening Dampers Closing Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 45 The bottom line shows either: Run Hours – indicates the number of hours that the unit has been operational. Filter Days – indicates the number of days left before the filters must be changed. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 46: Maintenance

    Maintenance Caring for Your Unit Heat recovery units, by their very nature, require regular maintenance. The Sentinel Totus 2 D-ERV has been designed to facilitate access to enable maintenance to be carried out easily. In addition to the maintenance tasks outlined below, periodic sterilisation of the unit in line with current medical advice on legionella risks is required.

  • Page 47: Removal/Replacement Of Parts

    The Top and Bottom Covers are arranged in two halves, designed to be removed separately. BOTTOM COVER COVER COVER BOTTOM COVER BOTTOM COVER Totus 2 Midi & Mini top cover Totus 2 Midi bottom cover Totus 2 Mini bottom cover Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 48 Mounted Lift and slide the covers out in the direction of the arrows. Removal of Bottom Covers when Ceiling- Mounted Open Thumb-catches of Bottom covers to the unit chassis Remove Bottom Cover2 Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 49: Filter Removal/Replacement (Roof-Mounted)

    (Up) and (Down) push-buttons to select Yes and reset the timer (see Filter Screen on page 29). Filter Removal/Replacement (Ceiling-Mounted) Removal Turn the unit off. Remove Panel 3 and the Filter Panel Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 50: Motor Removal/Replacement (Roof-Mounted)

    Remove the top cover at the external ambient-air side of the unit (see Cover Removal/Replacement on page 47). Disconnect the motor leads/Molex connector. Unscrew, and retain, the four screws securing each motor to its mounting plate on the chassis. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 51: Motor Removal/Replacement (Ceiling-Mounted)

    47). Disconnect the motor leads/Molex connector. Unscrew, and retain, the four screws securing each motor mounting plate to the chassis. Withdraw each motor and its mounting plate downward from the unit. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 52: Float Switch Removal/Replacement (Roof-Mounted)

    Turn the unit off. Remove the top cover at the external ambient-air side of the unit (see Cover Removal/Replacement on page 47). Remove the square access panel by unscrewing the four retaining screws. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 53: Float Switch Removal/Replacement (Ceiling-Mounted)

    Unscrew, and retain, the 2 wing-bolts securing the float switch to the chassis plate using your finger and thumb. When accessed from underneath the unit, the float switch is screwed to the square access panel. Withdraw the float switch downward from the unit. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 54: Condensate Pump Removal/Replacement (Roof-Mounted)

    Disconnect the condensate pump leads/Molex connector and disconnect the inlet and outlet water pipes. Condensate pump access from the top of the unit (Roof-Mounted). Unscrew, and retain, the 2 screws of the U-shaped bracket securing the condensate pump to the chassis. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 55: Condensate Pump Removal/Replacement (Ceiling-Mounted)

    Reconnect the condensate pump leads/Molex connector and the inlet/outlet water pipes. Switch on the unit and check that the water pump operation is correct. Replace the bottom cover (see Cover Removal/Replacement on page 47). Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 56: Filter Removal/Replacement (Maxi)

    For bypass filter follow instructions on commissioning screen when removing bypass flap through PCB. Once bypass flap opens, pull the bypass filter to the outside by using the tie. Place back the filter by bending and place in brackets. Close panels. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 57: List Of Spares

    CP CONVERSION KIT 445482 Pressure Transducer KIT 446848 446848 Turnbuckles (Pair) 445040 Bypass Filter 407752 *F6 Filter conversion kit is required if F6 filters are to be fitted to the totus unit. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 58: Troubleshooting

    50% for 60 seconds before triggering this diagnostic stop. Commissioning Interface but A 360 code indicates power to the remote control but no data, a wiring fault or no data from HR failure on the heat recovery board. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 59: Fault Led/Status Relay

    Supply PCB, see Figure below. Main Controller PCB Contact Vent-Axia Technical Support. Internal Fuses Internal fuse are provided on the Power Supply PCB and the Main Controller PCB for the protection the unit. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 60: Airflow/Temperature Troubleshooting

    Check the Commissioning Interface Status LED and display screens for alarm indications/messages. No airflow or Maximum airflow Check commissioning settings are correct – compare code with that written on the Installer Notice label. Re-instate settings, if necessary. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 61: Condensate Troubleshooting

    Contact Vent-Axia Technical Support. Pump running continuously Pump Check the operation of the float switch inputs. Replace pump if necessary. Trigger switch Check the operation of the float switch. Replace if necessary. Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 62: Appendix A: Glossary

    Temperature of the fresh air entering the room (supply) Temperature of the stale air leaving the room (exhaust) Temperature of the stale air discharged to the outside ambient Comfort setting Passive Infra-Red Sensor Voltage-Free Contact Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...

  • Page 63: Appendix B: Options And Accessories

    Appendix B: Options and Accessories Appendix B: Options and Accessories Sentinel Totus The following options and accessories are available for the Sentinel Totus. Item Control Type Part Number Description Sensors and Switches Air Quality Sensor Switch 432953 Measures VOC level (adjustable)

  • Page 65: Appendix C: Main Controller Pcb Terminals

    Closed = max speed, Open = min speed 75-77 Switch 1 Enable On/Off Closed = HR on , Open = HR off 78-83 Factory use only 84-87 Commissioning Interface PCB terminals 1-4 connect to the Commissioning Interface terminals Connection Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 67 Appendix C: Main Controller PCB Terminals Sentinel Totus 2 D-ERV Installation, Operation and Maintenance...
  • Page 68 TECHNICAL SUPPORT Tel: 0844 8560595 Fax: 01293 455197 For details of the warranty and returns procedure please refer to www.vent-axia or write to Vent-Axia Ltd, Fleming Way, Crawley, RH10 9YX 445924 M © 2016 Vent-Axia Limited. All rights reserved. 0717...

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