SA-D-HV-EH

SCHOOLAIR-V-HV (example of 2-pipe construction – active heating)

X-CUBE/SCHOOLAIR-D-HV-0-EH/3363×410×1030/0/C3

Decentralised ventilation unit for ceiling installation

Please note:

The ceiling ventilation unit variant described is equipped with an integrated individual room control for independent classroom operation.

The supplied controllers contain the parameters of the standard control for operation according to our control description

Ventilation unit for schools – ceiling installation – master unit

Ventilation unit for ceiling installation TROX X-CUBE/SCHOOLAIR-D-HV-0-EH with supply and extract air function, rotary heat recovery unit and switchover option to secondary air operation (air quality dependent), as well as electric reheating function:

• Just one unit fulfils the increased outdoor air requirement for an entire classroom
• Suitable for suspended ceiling installation with the bottom edge of the ventilation unit flush with the suspended ceiling
• 2-part casing made of galvanised sheet steel, all internal ducts are sealed and insulated, internal cable penetrations are sealed, exposed surfaces are powder-coated (RAL 9010, GU 20; alternatively RAL 7012, GU 20)
• Intake and discharge sides with noise and heat insulation made of mineral wool faced with glass fibre scrim (fire rating class A, non-combustible according to DIN 4102, part 1), erosion resistant up to air velocities of 20 m/s, or closed cell insulation material (fire rating class B)
• The unit meets the hygiene requirements of VDI 6022
• Interior fixing points and unique 2-part casing simplify ceiling installation
• Connection to the outdoor air and exhaust air openings (by others) in the wall at the back of the unit, with perimeter closed cell sealing tape, d=10 mm (the intake and outlet resistance of the construction provided by others should not exceed 40 Pa at the nominal volume flow rate), alternatively with duct connections
• Return air intake opposite the supply air intake, including extract grille
• Supply air discharge on the underside of the unit, via innovative supply air diffuser that ensures complete room ventilation, with the unit installed at the front of the room (above the blackboard or whiteboard) or on the façade side
• The inspection access panels are hinged on one side and fitted with special fasteners to facilitate maintenance. The underside of the unit it has to be freely accessible for maintenance or possible deinstallation
• Use of 2 free-running wheels with backward-curved blades, energy-saving EC technology, supply and extract air fan classified in category SFP 0 (< 300 W/(m³/s)) in accordance with DIN EN 16798-3:2017-11. A connected load of 3680 VA must be taken into account when dimensioning the connecting cable
• Suitable for 3 speed levels (300, 500 and 800 m³/h as well as boost level of 1100 m³/h), signalling by means of integrated single room control system. The volume flow rate can be corrected at a later stage by adjusting the control voltage
• Sound attenuators on the upstream and downstream sides provide maximum reduction of sound power levels
• The technical requirements of EU directive 1253/2014 for non-residential ventilation systems are fulfilled and documented in accordance with the directive
• Integrated rotary heat exchanger for heat recovery, with high heat recovery efficiency (> 75%), modulating control by integrated single room control system
• Motorised shut-off dampers in the outdoor air and exhaust air ducts, normally closed when there is no power (via energy storage), 230 V open/close actuator, signalling with integrated single room control system
• Automatic switching to secondary air mode (only with an air quality sensor) if the room air quality (measured with the integral CO₂ sensor) is within the defined limits. The outdoor air damper closes, the secondary air damper opens and the extract air fan is switched off.
• Integral electrical components are completely wired with FSL-CONTROL III, control components are integrated in the unit. Cable for connection (connection by others) to the power supply (L, N, PE), with wire end ferrules, approx. 1 m routed out of the casing. As a transfer point to the existing electrical system:
  • Supply voltage (230 V): 3 wires, 3 × 1.5 mm² (L, N, PE)
• Connection option for bus communication (optional), connection of room control panel etc. after opening the customer area of the control unit. As a transfer point to the on-site measurement/control/regulation system:
  • Rail mount terminals type Wago 260 for the on-site connection of
    • Digital inputs DI
    • Digital outputs DO
    • Master-slave connection RS485
    • Optional integration in MCE/BACS via RS485 (Modbus/BACnet)
    • Room control panel
    • RJ45 socket as service access to the user interface
    • Optional integration into an on-site MCE/BACS via Ethernet (Modbus/BACnet)
• The following sensors are included in the unit as part of the single room control system (the actual room temperature is captured at the room control panel):
  • Room air quality sensor CO₂
  • Supply air temperature measurement downstream of the heat exchanger
  • Outdoor air temperature measurement in the outdoor air intake
• The outdoor air filter is a pocket filter with non-woven glass fibre, ISO ePM1 (fine dust filter):
  • Filter class according to ISO 16890: ISO ePM1 60%
  • Eurovent Certification for fine dust filters
  • Meets the hygiene requirements of VDI 6022
  • High energy efficiency class according to Eurovent
  • Glass fibre nonwovens, in sewn design
  • Enlarged filter area due to filter pockets
  • Low initial differential pressure and high dust holding capacity, ideal airflow conditions due to wedge-shaped filter pockets
  • Quick installation and filter change thanks to easy and safe handling
  • Filter area ≥ 1.4 m²
• Extract air filter with pleated filter medium, hence large filter area
  • Filter class to ISO 16890: ISO Coarse 90%
  • Low differential pressures at high volume flow rates
  • Filter media made of synthetic fibres
  • Moisture-resistant frame made of non-woven fibres
  • Tested according to ISO 16890
• Quick filter change as the filter chamber is immediately accessible once the cover has been opened
• Differential pressure measurement for filter monitoring, evaluation by means of integral single room control system
• The heat exchanger is an electric air heater
  • Maximum output: 3000 W
  • The surface temperature does not exceed 60 °C to safely prevent the smouldering of dust
  • Including control loop, consisting of temperature sensor, NTC 10 kΩ, and power controller
  • Supply air temperature: 25 °C max.
  • Including safeguards:
    • Safety temperature limiter, mechanical, automatically resetting
    • Safety temperature monitor, mechanical, no auto reset

Units - dimensions and weight:

Width: approx. 3363 mm (without fixing brackets)

Height: approx. 410 mm

Depth: approx. 1030 mm (without façade seals)

Weight: approx. 340 kg

FSL-CONTROL III controller

Including control system FSL-CONTROL III, as described below:

FSL-CONTROL III is described as a stand-alone single room control system with a simple timer. Optional expansions, such as integration into an on-site MCE/BACS via Modbus TCP, Modbus RTU, BACnet MS/TP or BACnet IP, humidity sensors, return temperature sensors, electromotive valve actuators or pressure-independent control valves, are included in the delivery programme, but must be exchanged for the standard components in the following description. A room temperature signal is also required. Various room control panels and sensors are available to provide this signal. Suitable optional equipment can be found after the following standard equipment for stand-alone operation. - please refer to: Optional control accessories. We recommend commissioning by TROX. You will find related text modules below.

TROX control module FSL-CONTROL III (order code ...-C3-MA ...):

• Single room controller to be mounted on a DIN mounting rail in the unit or in a separate control equipment box
• 42 digital or analogue inputs and outputs
• A MicroSD card (at least 2 GB storage space) is integrated as a flash memory medium. The trend data are stored there and can be retrieved via the RJ45 socket
• Factory-equipped with a software package for master units specially developed for decentralised ventilation units. The software enables simple master-slave communication via Modbus RTU
• Up to 10 slave devices can be connected to one master device
• The software provides 3 types of operation (Off, Automatic and Manual), 3 operating modes (Occupied, Unoccupied and Standby) and 4 operating mode overrides (Boost, Class, Night Ventilation and Fan Forced Circuit)
• Basic distinction between room temperature control by controlling heating and cooling valves or continuous bypass damper or supply air temperature control for isothermal ventilation operation
• CO₂ guided air quality control
• Heat recovery all year round
• Filter monitoring
• Configurable DI for on-site connection of presence detectors, window contacts, holiday switching, etc.
• Alarm messages: Type A (shutdowns) and Type B (notifications)

Real time clock (RTC)

Real Time Clock (RTC/real time clock) (order code ...-T/...):

• Component of the Master Software Package
• Enables a simple timer
  • 7 days with 10 switching points each
  • Automatic summer / winter time changeover
  • Temporal activation of night purge

CO2 sensor

CO₂ sensor (order code…/C/…):

• Sensor arranged in the extract air intake of the master unit for recording the indoor air quality and corresponding control of the outdoor air flow rate
• Measurement via an NDIR sensor, which works on an infrared basis and compensates for any contamination by its 2-beam measurement principle
• Measuring range 0 – 2000 ppm

Supply air temperature sensor

Supply air temperature sensor (order code .../Z/...):

• Supply air temperature sensor with NTC thermistor, 10 kΩ at 25 °C, measuring range -35 to 105 °C
• Very short response time due to perforated measuring tip

Outdoor air temperature sensor

Outdoor air temperature sensor (order code .../A/...):

• Outdoor air temperature sensor with NTC thermistor, 10 kΩ at 25 °C, measuring range -35 to 105 °C

Optional control accessories

Optional equipment to increase the comfort of the FSL-CONTROL III:

TROX room control panels for FSL-CONTROL III

At least one room temperature signal is required per room. There are several variants of TROX room control panels available, optionally with or without selector switch. Additionally, we offer a room temperature sensor RTF without control elements. Alternative on-site room control panels must be connected via bus communication.

Digital room control panels for surface mounting:

For operation and adjustment of the ventilation units.

• Supplied loose as an accessory. Connection to the master unit via Modbus serial line. Project-specific software including setpoint value adjuster, various status displays, selector switch, CO₂ indicator. Touch-sensitive colour display 3.5" 320 × 240 pixels. Sensor: NTC 10 kΩ. Degree of protection: IP 20. Type: Schneider TM172DCLWT. Dimensions (H × B × T): 120 × 86 × 25 mm. Weight: 340 g, colour: white. Installation: Surface mounting or on a standard flush-mounted box. Power supply: 24 V DC (including suitable switching power supply unit for flush-mounted installation). Power consumption: 3.2 VA/1.3 W. Other design frames are available upon request and for a surcharge.

Control panels with selector switch for surface mounting:

Control panel with selector switch, for surface mounting, type Thermokon

• Supplied loose as an accessory, with room temperature sensor, setpoint adjuster, override button, LED and 3-step switch as well as Off and Automatic, casing made of PVC0, pure white (RAL 9010), for mounting on a 60 mm flush box or for surface mounting, NTC thermistor as sensor, resistance 20 kΩ at 25 °C, dimensions (B × H × T): 84.5 x 84.5 x 25 mm, operating temperature: -35 to 70 °C

Control panels without selector switch for surface mounting:

Control panel without selector switch, type Thermokon, for surface mounting:

• Supplied loose as an accessory, with mode display, push button and setpoint adjuster, NTC thermistor as sensor, 20 kΩ, protection level IP 20, dimensions (B × H × T): 84.5 x 84.5 x 25 mm

Room temperature sensor for surface mounting:

Room temperature sensor TROX RTF, surface mounting

• Supplied loose as an accessory, room temperature sensor without any control elements, measuring range -35 to 70 °C, sensor NTC 10 kΩ, connection terminal screw terminal, d = 1.5 mm, protection level IP 20, surface mounting or on a 70 mm flush-mounted box, dimensions (B × H × T): 85 x 85 x 30 mm, casing ABS, in RAL 9010

Control panels without selector switch for flush mounting:

For manual operation of the ventilation units with a high-quality look and the matching design from a wide range of switch programmes, the unit is suitable for particularly design-oriented facilities.

Control panel without selector switch, type Thermokon, for flush mounting, switch from Berker S.1 range, polar white

• Supplied loose as an accessory, with mode display, push button and setpoint adjuster, NTC sensor 20 kΩ, protection level: IP 20

Control panel without selector switch, type Thermokon, for flush mounting, switch programme Berker Q.3, white

• Supplied loose as an accessory, with mode display, push button and setpoint adjuster, NTC sensor 20 kΩ, protection level: IP 20

Control panel without selector switch, type Thermokon, for flush mounting, switch programme Busch-Jäger future^® linear, white

• Supplied loose as an accessory, with mode display, push button and setpoint adjuster, NTC sensor 20 kΩ, protection level: IP 20
• Other switch programmes on request

Control panels without selector switch and without setpoint value adjuster, for flush mounting:

Control panel without selector switch and without setpoint value adjuster, type Thermokon, for flush mounting, switch from Gira E2 range

• Supplied loose as an accessory, with mode display and push button, NTC sensor 20 kΩ, protection level: IP 20
• Other switch programmes on request

Interface for integration into an on-site MCE/BACS:

Modbus TCP interface including web server (order code .../MT/...)

To increase convenience, we recommend integration into an on-site MCE/BACS or visualisation with X-TAIRMINAL. FSL-CONTROL III can be integrated into an on-site MCE/BACS via the Modbus TCP protocol. Additionally including web server for simplified configuration, commissioning and remote monitoring of the unit. The MCE/BACS is not included in the supply package from Trox SE, only the interfaces listed above are available here.

• Modbus TCP interface (Ethernet)

BACnet IP interface including web server (order code .../BI/...)

To increase convenience, we recommend integration into an on-site MCE/BACS. FSL-CONTROL III offers the option of being integrated into an on-site MCE/BACS via the BACnet IP protocol. Additionally including web server for simplified configuration, commissioning and remote monitoring of the unit. The MCE/BACS is not included in the supply package from Trox SE, only the interfaces listed above are available here.

• BACnet IP interface (Ethernet)

Modbus RTU (order code .../MR/...)

To increase convenience, we recommend integration into an on-site MCE/BACS. FSL-CONTROL III offers the option of being integrated into an on-site MCE/BACS via Modbus RTU. The MCE/BACS is not included in the supply package from Trox SE, only the interfaces listed above are available here.

• Modbus RTU interface (RS485)

BACnet MS/TP (order code .../BM/...)

To increase convenience, we recommend integration into an on-site MCE/BACS. FSL-CONTROL III offers the option of being integrated into an on-site MCE/BACS via BACnet MS/TP. The MCE/BACS is not included in the supply package from Trox SE, only the interfaces listed above are available here.

• BACnet MS/TP interface (RS485)

Version as SLAVE DEVICE

Identical to the MASTER DEVICE, as described above, but with the following deviations:

• No room air quality measurement in the unit
• No connection option for room control panels
• No outdoor temperature detection in the outdoor air
• No connection to on-site bus communication possible
• Pre-assembled self-sufficient control system for decentralised façade ventilation units in SLAVE construction

Replacement filter set suitable for the appliance version

• Extract air filter as Z-Line filter
• Outdoor air filter as pocket filter

Commissioning of the decentralised ventilation units

Commissioning/parameterisation of the decentralised ventilation units without integration into an on-site MCE/BACS

• Visual inspection of the device connections on site for compliance with the respective installation specifications from the installation and configuration instructions: air connections, heating/cooling connection, electrical connections, integration into the installed outer casing, connections of external components
• Checking and, if necessary, adapting the project parameters pre-set in the factory with regard to customer-specific adaptations
• Functional test of the individual components (control elements, fans, valves, dampers, sensors)
• Checking the project-specific control functions including any special functions such as volt-free switch contacts
• Documentation of the device settings and service work in a service report. The service report must be signed by your company or representative as the client.
• Invoicing is done as a flat rate, derived from the number of units and distance.

Commissioning/parameterisation of the decentralised ventilation units with integration into an on-site MCE/BACS

• Visual inspection of the device connections on site for compliance with the respective installation specifications from the installation and configuration instructions: air connections, heating/cooling connection, electrical connections, integration into the installed outer casing, connections of external components, connections of MCE/BACS
• Checking and, if necessary, adapting the project parameters pre-set in the factory with regard to customer-specific adaptations
• Functional test of the individual components (control elements, fans, valves, dampers, sensors)
• Checking the project-specific control functions including any special functions such as volt-free switch contacts
• Function test of the communication to the MCE/BACS in cooperation with the controls provider:
  • Checking that the on-site settings comply with the specifications in the installation and configuration instructions
  • Input test of the data points sent on site
  • Output test of the output data points
  • Trial operation of the operating states that can be switched by the MCE/BACS
• Documentation of the device settings and service work in a service report. The service report must be signed by your company or representative as the client.
• Invoicing is done as a flat rate, derived from the number of units and distance.

Instruction in operation and maintenance

• One-time instruction for the operation of the decentralised ventilation units consisting of:
  
  • Description of the equipment functions on the unit that has already been put into operation
  • Description of the room control panel and the room conditions that can be influenced by it
  • Description of the maintenance work
• Invoicing is done on a flat-rate basis. The instruction is carried out by the responsible sales representative

• Installation below the raw ceiling near the façade or an external wall
• 2-part device casing for easier transport and simple assembly
• The ventilation unit is fitted with two hanging brackets to screw-fix it to the façade system or an external wall
• Weather protection for the intake air and exhaust air openings to be provided by others
• The outdoor air intake or exhaust air discharge takes place via 2 façade openings. The façade openings must be professionally provided by the customer and ideally have a slope to the outside
• Free area of ventilation openings: 0.10 m² each
• Depending on the installation situation it may be necessary to fit a suitable partition between the outdoor air and exhaust air ducts.
• Installation and connections to be performed by others. Fixing, connecting and sealing material not included
• The electrical connection is on the right-hand side of the unit when seen from the room