X-CUBE
SCHOOLAIR-S-HV  

SCHOOLAIR-S-HV-EH/1200×2300×600/0/C3

Floor-standing decentralised ventilation unit

Please note:

The described floor-standing ventilation unit is equipped with an integral single room control system for independent room control. The parameters for standard control of a classroom according to our control system description are stored in the controller

Ventilation unit for schools – floor-standing – master unit

Decentralised ventilation unit TROX SCHOOLAIR-S-HV-0-EH for supply and extract air, with rotary heat recovery unit and electric air heater, for floor-standing installation:

• Just one unit fulfils the increased fresh air requirement for an entire classroom
• Installation in front of any wall
• Two-part unit casing made of galvanised sheet steel, consisting of upper and lower part, all necessary internal air duct ducts sealed and lined, internal electric cable bushings sealed
• Exposed surfaces are powder-coated in two colours – casing in RAL 9010 GU30 (alternatively RAL 7012 GU30), plinth and trim frame (top) in RAL 7012 GU30 (alternatively RAL 9010 GU30)
• Sound- and heat-insulating lining on suction and discharge side made of mineral wool faced with glass fibre scrim (material classification A, non-combustible according to DIN 4102, T1), erosion resistant up to air velocities of 20 m/s, or closed cell insulation material
• The unit meets the hygiene requirements of VDI 6022
• Easy assembly of the two-part casing on site thanks to internal (i.e. not visible) connection points
• Levelling feet, ±10 mm, to compensate for construction tolerances
• Optically covered adjustable slotted hole bracket for fixing to the wall from 0 - 80 mm wall distance (anti-tilt device)
• Connection to the on-site fresh air and exhaust air ducts by means of round connection pieces (250 mm) with lip seal. The intake and discharge resistance of the on-site construction should not exceed 40 Pa at nominal volume flow rate
• Extract air removal at the bottom front of the unit
• Air discharge is at the top of the unit; the TROX DLQ 400 supply air diffuser ensures complete room ventilation, no matter where in the room the ventilation unit is installed
• The inspection access doors are hinged and fitted with special fasteners to facilitate maintenance. The area in front of the unit must be kept clear for maintenance and repair. An opening angle of at least 90° has to be ensured (1200 mm swivel radius)
• 2 centrifugal fans (plug fans) with energy-efficient EC motors, classified as SFP 0 (< 300 W/(m³/s)) according to EN 16798-3:2017-11; the connecting cable requires a power rating of 3640 VA
• Suitable for 3 speed levels (300, 500 and 800 m³/h as well as boost level of 1050 m³/h), signalling by means of integral single room control system; the volume flow rate can be corrected at a later stage by adjusting the control voltage
• Upstream and downstream sound attenuators minimise the sound power levels and increase the efficiency of the fans at the same time
• The technical requirements of EU directive 1253/2014 for non-residential ventilation systems are fulfilled and documented in accordance with the directive
• Integral rotary heat exchanger for heat recovery, with high heat recovery efficiency (> 80%), modulating control by integral single room control system
• No condensate pipes required
• Motorised shut-off dampers in the outdoor and exhaust air ducts, normally closed when there is no power (capacitors), 230 V open/close actuator, signalling via integral single room control system
• Automatic room air quality measurement with integral CO₂sensor (optional)
• Integral electrical components are completely wired with FSL-CONTROL III, control components are integrated. Cable for connection (installation by others) to the power supply (L, N, PE), with wire end ferrules, approx. 1 m routed out of the unit as transfer point to the on-site electrical installation:
  • Supply voltage (230 V): 3 wires, 3 × 2.5 mm² (L, N, PE)
• Integration with bus system as an option, connection of control panels etc. in the customer area of the control system. As a transfer point to the on-site instrumentation and control (I&C) system: Connection is made on the top of the unit
  • Rail mount terminals type Wago 260 for the connection (by others) of
    • Digital inputs DI
    • Digital outputs DO
    • Master-slave connection RS485
    • Central BMS connection (optional) RS485
    • Room control panel
  • RJ45 socket as service access to the user interface
• The following sensors are included in the unit as part of the single room control system (the actual room temperature is captured at the control panel):
  • Indoor 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 to ISO16890: ISO ePM1 60%
  • Eurovent certification for fine dust filters
  • Meets the hygiene requirements of VDI 6022
  • High energy efficiency class according to Eurovent
  • Non-woven glass fibres, sewn
  • 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 ≥ 3m²
• 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 to ISO 16890
• Quick filter change because the filters can be accessed without any tools once the inspection access doors of the casing have 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 heat output: 3000 W, continuously controlled
  • Max. surface temperature restricted to 60°C, thus preventing dust smouldering
  • Including control loop with temperature sensor, NTC 10 kΩ, and power controller
  • Recommended supply air temperature: 25 °C max.
  • Including safeguards:
    • Airflow monitor
    • Thermal cut-out, mechanical, auto reset
    • Safety temperature monitor, mechanical, no auto reset

Unit dimensions and weight:

Width: 1200 mm

Height: 2300 mm (including brackets to secure the unit to a wall)

Depth: 600 mm

Footprint: 0.72 m²

Weight: approx. 360 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

Fresh 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 GmbH, 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 GmbH, 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 GmbH, 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 GmbH, 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

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 and commissioning

• Floor-standing installation
• Level adjustment using the 4 levelling feet (±10 mm)
• 2 adjustable fixing brackets at the top are intended to screw-fix the unit to the wall and prevent it from tilting
• Connection to the outdoor air and exhaust air openings (by others) with circular spigots (250 mm) with lip seal
• 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
• Weather protection for the outdoor air and exhaust air openings to be provided by others
• 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 top left-hand side of the unit, as seen from the room