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Nagas ABE Series Installation, Operation And Maintenance Manual

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Rev 1_2023
ABE SERIES
ENERGY RECOVERY SYSTEM
Indoor and Outdoor installation
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
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www.nagasinnovation.com
1385, Lionel-Boulet Blvd., Varennes, Québec J3X 1P7
Toll Free: 1 888 514-8007
Tel: 438 338-1101

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  • Page 1 Rev 1_2023 ABE SERIES ENERGY RECOVERY SYSTEM Indoor and Outdoor installation INSTALLATION, OPERATION AND MAINTENANCE MANUAL • • • www.nagasinnovation.com 1385, Lionel-Boulet Blvd., Varennes, Québec J3X 1P7 Toll Free: 1 888 514-8007 Tel: 438 338-1101...
  • Page 2 CAUTION! This instruction manual should be kept with the device and kept legible. Hazard and risk identification is the first step in risk assessment, please read carefully: Indicates a situation of imminent risk that, if not avoided, will result in death or DANGER ! serious injury.

  • Page 3: Table Of Contents

    The specifications, illustrations and description in this document were, to the best of our knowledge, accurate at the time they were approved for printing. Nagas Innovation Inc. has a policy of continuous product improvement and reserves the right to change design and specifications, discontinue offering certain features, or discontinue production of a given model size without notice.

  • Page 4: Code And Regulation

    1. CODE AND REGULATION This product is intended to be installed, indoors or outdoors depending on the model, by a qualified installer for this type of device. This recovery unit is designed for industrial or commercial use only. The must comply with the latest laws, regulations, and electrical code CSA C22.1/NFPA 70.

  • Page 5: General Information

    This equipment must be used specifically for the purposes for which it was designed and manufactured. Any contractual liability of Nagas Express is therefore excluded in the event of injury to persons, animals, or damage to the goods, resulting from errors in installation, adjustment, maintenance, or improper use.

  • Page 6: Limited General Warranty

    (hereinafter the "Date of first use of the Product"), or eighteen (18) months following the date of delivery of the Product by Nagas Express from its factory (hereinafter the "Date of delivery of the Product"), based on the first of these events, the full value of any component of our Product.

  • Page 7: Parts, Repairs And Maintenance

    When contacting Nagas Express Customer Service (or an authorized distributor) for parts, repairs or services, please be prepared to provide the model number, serial number, date of installation and nature of the failure as well as a description of the required parts.

  • Page 8: Installation Instructions

    3. INSTALLATION INSTRUCTIONS 3.1. GENERAL  The unit must be handled and assembled carefully on a leveled floor. Improper handling or misalignment can cause premature wear or mechanical damage.  The inlet and outlet air ducts shall be equipped with removable access panels. These panels must be sized to allow inspection of the unit at start-up and during routine inspection.

  • Page 9: Assembly

    Position of lifting supports CAUTION! DO NOT allow the unit to be lifted by forklift forks under the floor or by the housing of the unit. It could easily be damaged. Only the lifting supports are safe to handle the unit.

  • Page 10: Installation Of Air Inlet/Outlet Covers (If Required)

    Step 1: Position the air covers on their support. Step 2: Screw the air covers all over the contour with self-drilling screws (supplied by Nagas). Step 3: Seal the entire perimeter of air covers with sealant to avoid openings between the entrance cover and the outer wall of the unit and thus the risk of intrusion of rain or snow.
  • Page 11 WARNING! No unspecified and unapproved external load shall be added to the control transformer circuit or the main supply circuit without the written consent of Nagas Express where the warranty will be void. 11 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...

  • Page 12: Start-Up Instructions

    4. START-UP INSTRUCTIONS WARNING! The following information should only be used by a qualified technician (with qualification cards) with knowledge of electricity and ventilation. This device is connected to high voltages and contains moving parts that can start unexpectedly. An electric shock, serious injury or death could occur if the instructions described in this manual are not followed.

  • Page 13: Shutting Down The Unit

    5. SHUTTING DOWN THE UNIT 5.1. EXTENDED SHUTDOWN When the unit is stopped for a long time, it is recommended to turn off the power supply and lock the main electrical disconnector to avoid accidental starting of the unit. A full inspection of the installation and unit is recommended to ensure that everything is in order.

  • Page 14: Principle Of Operation Of The Recuperator

    6. PRINCIPLE OF OPERATION OF THE RECUPERATOR The high-efficiency energy recovery system with heat banks that store and discharge energy between the two airstreams in a cyclical manner, either with over/under or side by side arrangements. At all time half the dampers are closed, the other half are opened.

  • Page 15: Description Of The Recovery Unit Housing

    6.1. DESCRIPTION OF THE RECOVERY UNIT HOUSING 1. 2x Panels of 4 sections of dampers with symmetrical movement. 2. 1x Motor support plate . The motor rotates clockwise. (Plate can be removed to allow inspection) 3. 1x Damper position sensor. Must be 4 mm away from the linkage arm for optimal detection. 4.

  • Page 16: Sequence Control

    7. SEQUENCE CONTROL 7.1. LOCAL CONTROL MODE Strat sequence:  Starting the unit via HMI screen or remote display.  The fresh air and exhaust dampers open at their maximum position.  Following the proof of opening of the fresh air and exhaust dampers, the supply and exhaust fan start at the speed chosen in the HMI (CFM speed setpoint).

  • Page 17: Bacnet Control Mode

    Commands and status (dry contact):  Starting the unit.  Supply temperature setpoint via a 2-10Vdc signal (see table).  Control instructions for variable speed drives via a 0-10 Volts Ex signal: 5 volts = 30 Hertz, 10 volts = 60 Hertz;...

  • Page 18: Control Of The Recuperation

    Status by BACnet MSTP or IP communication:  Temperature readings of each sensor in the unit. - Outside sensor. - Supply sensor. - Return air sensor. - Exhaust sensor.  Notification of alarms.  Fan airflow reading (CFM). 7.4. CONTROL OF THE RECUPERATION The internal controller of the unit tends to maintain the supply set point (adjustable from 50F to 75F) by varying the cycle time of the recuperator between 20 to 120 seconds.
  • Page 19 Alarms Recovery unit fault (shutdown of the unit).  Temperature sensor fault.  Clogged filters (warning).   High humidity control in the air return (the recuperator will cycle every 10 sec.).  Supply sensor or low temperature limit (unit shutdown). Note: Alarms must be corrected and then erased by the operator interface to restart the unit.

  • Page 20: Control Interface Hmi

    8. CONTROL INTERFACE HMI 8.1. NAVIGATION IN THE HUMAN MACHINE INTERFACE (HMI) Arrow to increase the value of the selected parameter or move up to select the parameter. Arrow to decrease the value of the selected parameter or move down to select the parameter. Arrow to go to the next page or move to the icons of the navigation page.

  • Page 21: Hmi Structure

    8.1.1. HMI STRUCTURE 21 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...
  • Page 22 Main Menu Overview of the status of the unit. - Right arrow 2 sec, opens the MENU page - If Unit On/Off is selected, pressing OK, opens Start page - If the Flashing Alarm is selected, pressing OK, opens page ALARMS Start-up page Allows to start the unit (if in local mode) and view the status of the unit.
  • Page 23 Submenu page Provides access to unit adjustment and status menus Opens the submenus by pressing OK Left arrow 2 sec, back to MAIN MENU Setpoints page Allows the adjustment of the setpoints and values reading. Left arrow 2 sec, back to MAIN MENU Right Arrow, opens Timer Option Page To change the setpoint: select the setpoint (highlighted in black), press Ok (flashes), with the down, up, right or left arrows, change the setting and then press OK to accept it.
  • Page 24 Timer options page Choice of action when using the timer. By selecting Action and then OK, the option is displayed in black: Shutdown: Inactive timer ON/Off: Timer to start the unit CFM: timer to change the flow rate (CFM) according to the Day or night Left arrow, back to the SETPOINT page Timer page Adjustment of the timer schedule.
  • Page 25 Page 1: Supply Temperature (Supp T°) Outside Temperature (Outs T°) Return Temperature (Ret T°) Exhaust temperature (Exha T°) Page 2: Supply air flow Rate (SuppAirFlow) Return air flow Rate (RetAirFlow) Cycle Time (Cycle Time): Time between each damper cycle Rotate in (Cycle in): time remaining to cycle the dampers. Delay Status page Displays current delays.
  • Page 26 Enter Password page Pressing OK and with the arrows, write the password. Left arrow 2 sec, back to menu page Right arrow 2 sec, opens settings menu page Password Level 1: 50 Password Level 5: (for qualified personnel only) Settings Menu page Allows you to select a settings submenu.
  • Page 27 Ethernet page Allows you to adjust Ethernet settings. Left arrow, back to the NETWORK MENU page BACnet MS/TP page Allows you to adjust MS/TP BACnet settings. Left arrow, back to the NETWORK MENU page Calculation page Allows you to adjust the reading of air flows. page Left arrow, back to SETTINGS MENU Sup K Factor: Adjustment of the K-Factor in the supply fan formula...
  • Page 28 Recuperator page Displays information about the recuperator and allows it to be operated manually. Left arrow, back to SETTINGS MENU Right Arrow, opens cycle delay curve page Recuperator cycle delay page Allows to change the cycle delay settings of the recuperator following the control signal. By default, the response is linear between the control signal and the cycle time (20 to 120sec) page Left arrow, back to the RECUPERATOR...
  • Page 29 Alarms History page alarm With the down and up arrows displays the memorized , the code and the date. Left arrow 2 sec, opens page MAIN MENU Language page Allows you to change the display language. To change the language: press OK, with the down or up arrows change the language (French, English), then press OK Left arrow 2 sec, back to the MAIN MENU page Information page...

  • Page 30: Bacnet List

    8.1.2. BACNET LIST Object Object-name Object Type Description Unit-code Instance 0=Local, 1=Remote, ControlMode Analog 2=Communication Supply temperature setpoint, if If TempUnit=0,°C SupplyTempSp Analog ControlMode=2 If TempUnit=1,°F Supply airflow setpoint, if SupplyAirFlowSp Analog Cubic Foot Minute Control Mode=2 If TempUnit=0,°C SupplyAirTemp Analog Supply temperature If TempUnit=1,°F...
  • Page 31 Object Object-name Object Type Description Unit-code Instance UnitWarning Binary Unit in warning Reserved Binary RecuperatorMotorAlarm Binary Alarm recuperator motor Sensor of the recuperator in RecuperatorSensorAlarm Binary alarm DamperStatusAlarm Binary Dampers in alarm Alarm supply temperature SupplySensorAlarm Binary sensor Outdoor temperature sensor OutsideSensorWarning Binary warning...

  • Page 32: Alarms List

    8.1.3. ALARMS LIST Codes FR Display EN Display Description Reactions Reset Humidity is above 25% and Contrôle Humidity outdoor temperature is below Modulation every 10 seconds Automatic humidité Control 5°F/-15°C () for 1 hour REC. Moteur REC. Moteur The recuperator motor is in The unit stops Manual Faute...
  • Page 33 Codes FR Display EN Display Description Reactions Reset The supply or return air drive is VFD Faute VFD Fault in fault (see description on The unit stops Manual VFD). The reaction of the air supply Dev VFD FeedBack Supp drive VFD (VFDA1) differs from The unit stops Manual Alim...

  • Page 34: Typical Wiring Diagram

    9. TYPICAL WIRING DIAGRAM 9.1. TYPICAL WIRING DIAGRAM 34 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...
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  • Page 37 37 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...
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  • Page 40: Typical Control Panel

    9.2. TYPICAL CONTROL PANEL 40 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...

  • Page 41: Unit Maintenance

    10. UNIT MAINTENANCE Performing the following checks at the prescribed frequency is necessary to keep the device in good working order. Do not limit the inspection to this list, as some environmental conditions may require further or more frequent inspections. Frequency Checklist Weekly...
  • Page 42 WARNING! NEVER OPERATE THE MACHINE WITHOUT FILTERS    Use only filters recommended by the UL 900 approved manufacturer. Poor filter quality could affect the warranty of the unit.   Use only filters with a minimum efficiency equivalent to MERV-8 upstream of the recovery blocks in the outdoor air and return air ducts.

  • Page 43: Blowers Balancing Procedure

    11. BLOWERS BALANCING PROCEDURE 43 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...

  • Page 44: Startup Report

    12. STARTUP REPORT Unit # : ______________________________ Company: ______________________________ Project: ______________________________ Technician: ______________________________ Manager: ______________________________ Contractor: ______________________________ Address: ______________________________ Phone: ______________________________ Email: ______________________________ INFORMATION MANUFACTURER Model Number: ______________________________ Serial number: ______________________________ INITIAL INSPECTION Unit housing: Filters: Internal components of the unit: Input voltage (see nameplate): Components: Installation of covers (if required):...
  • Page 45 45 of 45 Installation, operation, and maintenance manual-ABE Rev 1_2023...

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