SCHOOLAIR-V-HV

Rotary heat recovery unit

Rotary heat exchanger for heat recovery

Tested to VDI 6022

Conforms to VDI 6022

Water connections area

Revision filter

Levelling foot

SCHOOLAIR-V-HV

SUPPLY AND EXTRACT AIR UNIT WITH SWITCHOVER OPTION TO SECONDARY AIR OPERATION, INCLUDING ROTARY HEAT RECOVERY UNIT AND HEAT EXCHANGER FOR VERTICAL INSTALLATION ON THE FACADE

Ready-to-operate decentralised ventilation unit that provides good comfort levels; used for the ventilation of internal spaces such as classrooms or conference rooms and day nurseries

Acoustically optimised EC fans with low specific fan power, SFP = 0 to EN 16798-3
Rotary heat recovery unit (heat recovery efficiency 75 %) with moisture recovery in winter
Highly efficient heat exchanger for heating and cooling as 2-pipe or 4-pipe system
Heat exchanger connected on the right when seen from the room
Condensate drip tray with or without condensate drain
Year-round use of heat recovery
Reduction of fine dust and pollen contamination due to integral filters that conform to VDI 6022 – filter class ISO ePM1 65 % and extract air ISO coarse 50 %
Easy filter change, no tools required
Motorised shut-off dampers, normally closed (NC)
Installation without interruption to the operations of the respective school

Optional equipment and accessories

Modular control system FSL-CONTROL III, specially for decentralised ventilation units
Wood panelling as outer casing in various colours including TROX grilles for supply air and extract air (self-assembly kit)

General information

SCHOOLAIR-V-HV-2/KO/605x2200x413/C3

Under sill units for vertical assembly on the facade

Please note:
The described under sill ventilation unit variant is equipped with a single room control system arranged in the unit for autonomous classroom operation.
The supplied controllers contain the standard control parameters for operation according to our control system description

School ventilation unit – vertical installation - master unit
Under sill ventilation unit TROX SCHOOLAIR-V-HV with supply and extract air function, rotary heat recovery unit and switchover option to secondary air operation (air quality dependent), as well as heating function for vertical installation on the facade:

Device casing made of galvanised sheet steel, cover and sheet metal connections via deep-drawn threads and stainless steel cross-head screws, all necessary internal air ducts sealed and lined, internal electrical cable penetrations sealed, exposed surfaces powder-coated (RAL 9005, jet black)
Sound- and heat-insulating lining on intake 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 device meets the hygiene requirements of VDI 6022
Levelling feet, +40 mm
Slotted bracket on the side for fastening to the wall
Connection to the outdoor air and exhaust air openings (provided by others) of the facade by means of perimeter closed cell sealing tape on the rear side of the unit, d=10mm, the intake and discharge resistance of the construction provided by others should not exceed 20 Pa at a nominal volume flow rate
Extract air removal on the room side in the upper area of the front of the unit
Use of 2 plug fans with backward-curved blades, energy-saving EC technology, supply air and extract air fans classified in category SFP 1 (< 500 W/(m³/s)) according to EN 16798-3:2017-11, electrical power consumption of the entire unit at nominal volume flow rate 400 m³/h < 76 W, a power rating of 647 VA must be taken into account for the connecting cable
Suitable for 3 speed levels (200, 300 and 400 m³/h as well as boost level with 500 m³/h), signalling via device-internal single room control system, volume flow rate level correction by adjusting the control voltage subsequently possible
The technical requirements of EU directive 1253/2014 for non-residential ventilation systems are fulfilled and documented in accordance with the directive
Integral condensation rotary heat exchanger for heat recovery with high efficiency (heat recovery efficiency > 75 %), modulating control by device-internal single room control system and moisture recovery in winter (up to 50 %)
Motorised shut-off dampers in the outdoor/exhaust air area, normally closed when there is no power by means of energy storage, actuator 230 V, open/close, signalling via device-internal single room control system
Automatic switching to secondary air mode (only with an air quality sensor) if the indoor air quality (measured, for example, at the integral CO₂sensor) lies within the limits defined beforehand. The fresh air damper closes, the self-powered secondary air damper opens and the extract air fan is switched off
Electrical components contained in the unit are completely wired with FSL-CONTROL III, control components are integrated in the unit. Cable for connection (connection not in the TROX supply package) of the power supply (L, N, PE) with wire end ferrules led approx. 1 m out of the unit – as a transfer point to the electrical installation provided by others:
- Supply voltage (230 V): 3 wires, 3 × 1.5 mm² (L, N, PE)
Connection possibility for bus communication (optional), connection of control panel, etc. after opening the customer area of the controls. As a transfer point to the controls provided by others:
- Rail mount terminals type Wago 260 for the connection (provided by others) of
  - Digital inputs DI
  - Digital outputs DO
  - Master-slave connection RS485
  - BMS connection (optional) RS485
  - Control panel
  - RJ45 socket as service access to the user interface
The following sensors are arranged in the unit to control the single room control system (the actual room temperature is recorded 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
2-pipe aluminium copper tube heat exchanger for air heating, matched to project-specific data, easily removable for cleaning (depends on the connection to the main pipe - by others, not included in the TROX supply package), drainage and venting option per heating circuit, arrangement on the room side on the right. We recommend a connection to the pipe network (provided by others) with flexible hoses (not included in the TROX supply package) so that the heat exchanger can be easily removed for cleaning
The transfer point of the heat exchanger are the union nuts on which the control components (valve including actuator in the return line, lockshield in the flow line) are manually preassembled
Easy to clean condensate drip tray with condensate drain (Ø 12 × 1 [mm] made of galvanised sheet steel, powder-coated, RAL 9005)
Outdoor air filter as Mini Pleat filter class ePM1 (fine dust filter):
- Filter class to ISO16890: ISO ePM1 65 %
- Eurovent-certified
- ePM1 filter media made from high-quality, wet-strengthened glass fibre paper are pleated, the spacers are made from thermoplastic hot-melt adhesive and ensure uniform spacing (4 mm) between the pleats
- The frame is made of moisture-resistant, non-woven fibre, with lugs (for pulling it out) and must not reduce the flow cross section (filter size = flow cross section).
- Filter area >= 3.5 m²
Extract air filter class G3 (coarse dust filter) as flat filter medium, filter class according to ISO16890: ISO coarse 50 %
Quick change of the filters is possible, since the filter insert can be opened without tools after opening the casing that is provided by others via user-friendly quarter-turn fasteners (accessibility must not be restricted by the under sill trim that is provided by others)
Monitoring of the filter life by integrated differential pressure monitoring
Closed cell sealing tapes for sealing and adaptation to the outer casing (by others) are not included in the TROX supply package
The under sill trim provided by the customer is perforated in areas to be specified for the introduction of supply air, for extract air and secondary air intake, and must not restrict maintenance work and unit assembly and disassembly on the front of the unit
Clear distance between the front edge of the unit and the inner edge of the under sill trim approx. 30 mm
The front of the device must be completely accessible after disassembly of the outer casing

Units – dimensions and weight:
Width: approx. 605 mm (without fixing brackets)
Height: approx. 2200 mm (without levelling feet, without fixing bracket)
Depth: approx. 413 mm (incl. facade sealing)
Weight: approx. 145 kg

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

SEH Single room exhaust air
SET Single room extract air
SRO Single room fresh air
SRS Single room supply air
SEC Secondary air (optional)

1 Fresh air temperature sensor (optional)
2 Shut-off damper with actuator (exhaust air and fresh air)
3 Fresh air filter ISO ePM1 65 %
4 Sound attenuator
5 Fan (supply air and extract air)
6 Rotary heat exchanger for heat recovery
7 Heating coil
8 Cooling coil (optional)
9 Supply air temperature sensor
10 CO₂sensor (optional)
11 Extract air filter ISO coarse 50 %

Decentralised supply and extract air units for room ventilation and for dissipating cooling loads and heat loads. An EC centrifugal fan takes in the fresh air, which then flows through the motorised shut-off damper and the fresh air filter.

The fresh air then flows through the rotary heat exchanger, which can be switched off when it is sensible with regard to energy efficiency. If necessary, the air is heated or cooled by the heat exchanger before it is discharged to the room as a displacement flow (this is optional for 4-pipe systems). The extract air first passes through the extract air filter, then flows through the heat recovery unit, the extract air fan and the motorised shut-off damper before it is discharged to the outside as exhaust air. If the room air quality is sufficient, FSL-CONTROL III closes the outdoor air dampers and changes to secondary air operation, which is more energy efficient in any case.

Here, the control system compares the setpoint values of the indoor air quality with the actual values measured at the CO2 sensor and switches automatically between fresh air and secondary air operation. If the power fails, the fresh air and exhaust air dampers are closed to ensure fire protection and frost protection and to avoid draughts. This is ensured by a capacitor in each actuator. The supply air is discharged near the external wall and with a medium velocity between 1.0 and 1.5 m/s.

Due to the induction effect, the supply air velocity is rapidly reduced after the air enters the room. In cooling mode, the supply air displaces the room air over the entire floor area. The convection from people and other heat sources causes the fresh air from the pool to rise and create comfortable conditions in the occupied zone.

Width [mm]	605 mm
Height [mm]	2200 mm
Depth	413 mm
Volume flow rate	200, 300, 400 m³/h (boost 600 m³/h)
Nominal volume flow rate	400 m³/h
Sound power level	31 – 49 dB(A)
Heat recovery efficiency	75 %
Maximum operating pressure, water side	6 bar
Maximum operating temperature	75 °C
Supply voltage	230 V AC ±10 %, 50/60 Hz
Power rating	647 VA
Weight	145 kg

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

Supply air flow rate	m³/h	200	300	400	600
Total heating capacity	W	1840	2790	3860	5210
Room heating capacity	W	1142	1743	2445	3126
Air temperature inside the unit	°C	10.7	10.7	10.7	10.7
Supply air temperature	°C	37.1	37.4	38.3	35.6
Hot water flow rate	l/h	50	80	130	180
Water temperature, inlet	°C	60	60	60	60
Water temperature, outlet	°C	28.0	29.7	34.2	34.8
Water side pressure drop	kPa	1.6	3.5	8.1	14.5
Sound power level L_WA	dB(A)	31	37	42	49
Sound pressure level with 8 dB system attenuation	dB(A)	23	29	34	41
Active power P_el	W	30	50	76	205

SCHOOLAIR-V-HV (example of 2-pipe system – isothermal air discharge)

Supply air flow rate	m³/h	200	300	400	600
Total heating capacity	W	690	1000	1360	2000
Room heating capacity	W	120	140	214	281
Air temperature inside the unit	°C	12.8	12.8	12.8	12.8
Supply air temperature	°C	22.8	22.4	22.6	22.4
Hot water flow rate	l/h	20	30	45	80
Water temperature, inlet	°C	60	60	60	60
Water temperature, outlet	°C	30.0	31.1	33.7	38,3
Water side pressure drop	kPa	1	1.5	2.8	7.8
Sound power level L_WA	dB(A)	31	37	42	49
Sound pressure level with 8 dB system attenuation	dB(A)	23	29	34	41
Active power P_el	W	30	50	76	205

SCHOOLAIR-V-HV (example of 4-pipe construction)

Supply air flow rate	m³/h	200	300	400	600
Total cooling capacity	W	630	950	1190	1550
Room cooling capacity	W	534	802	1002	1303
Air temperature inside the unit	°C	27,5	27,5	27,5	27,5
Relative humidity	%	52	52	52	52
Water content of the dry air	kg	11,9	11,9	11,9	11,9
Supply air temperature	°C	18	18	18,5	19,5
Condensate	g/h	0	0	0	0
Chilled water flow rate	l/h	100	140	160	180
Water temperature, inlet	°C	16	16	16	16
Water temperature, outlet	°C	21,5	21,5	22,0	23,5
Water side pressure drop	kPa	9	16	20	25
Total heating capacity	W	1680	2500	3260	4150
Room heating capacity	W	635	902	1202	1102
Air temperature inside the unit	°C	7,6	7,6	7,6	7,6
Supply air temperature	°C	31,5	31,0	31,0	27,5
Hot water flow rate	l/h	40	65	95	115
Water temperature, inlet	°C	60	60	60	60
Water temperature, outlet	°C	32,0	28,0	31,0	29,0
Water side pressure drop	kPa	4	10	20	25
Sound power level L_WA	dB(A)	31	37	42	49
Sound pressure level with 8 dB system attenuation	dB(A)	23	29	34	41
Active power P_el	W	30	50	76	205

SCHOOLAIR-V-HV-2/KO/605x2200x413/C3

Under sill units for vertical assembly on the facade

Device casing made of galvanised sheet steel, cover and sheet metal connections via deep-drawn threads and stainless steel cross-head screws, all necessary internal air ducts sealed and lined, internal electrical cable penetrations sealed, exposed surfaces powder-coated (RAL 9005, jet black)
Sound- and heat-insulating lining on intake 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 device meets the hygiene requirements of VDI 6022
Levelling feet, +40 mm
Slotted bracket on the side for fastening to the wall
Connection to the outdoor air and exhaust air openings (provided by others) of the facade by means of perimeter closed cell sealing tape on the rear side of the unit, d=10mm, the intake and discharge resistance of the construction provided by others should not exceed 20 Pa at a nominal volume flow rate
Extract air removal on the room side in the upper area of the front of the unit
Use of 2 plug fans with backward-curved blades, energy-saving EC technology, supply air and extract air fans classified in category SFP 1 (< 500 W/(m³/s)) according to EN 16798-3:2017-11, electrical power consumption of the entire unit at nominal volume flow rate 400 m³/h < 76 W, a power rating of 647 VA must be taken into account for the connecting cable
Suitable for 3 speed levels (200, 300 and 400 m³/h as well as boost level with 500 m³/h), signalling via device-internal single room control system, volume flow rate level correction by adjusting the control voltage subsequently possible
The technical requirements of EU directive 1253/2014 for non-residential ventilation systems are fulfilled and documented in accordance with the directive
Integral condensation rotary heat exchanger for heat recovery with high efficiency (heat recovery efficiency > 75 %), modulating control by device-internal single room control system and moisture recovery in winter (up to 50 %)
Motorised shut-off dampers in the outdoor/exhaust air area, normally closed when there is no power by means of energy storage, actuator 230 V, open/close, signalling via device-internal single room control system
Automatic switching to secondary air mode (only with an air quality sensor) if the indoor air quality (measured, for example, at the integral CO₂sensor) lies within the limits defined beforehand. The fresh air damper closes, the self-powered secondary air damper opens and the extract air fan is switched off
Electrical components contained in the unit are completely wired with FSL-CONTROL III, control components are integrated in the unit. Cable for connection (connection not in the TROX supply package) of the power supply (L, N, PE) with wire end ferrules led approx. 1 m out of the unit – as a transfer point to the electrical installation provided by others:
- Supply voltage (230 V): 3 wires, 3 × 1.5 mm² (L, N, PE)
Connection possibility for bus communication (optional), connection of control panel, etc. after opening the customer area of the controls. As a transfer point to the controls provided by others:
- Rail mount terminals type Wago 260 for the connection (provided by others) of
  - Digital inputs DI
  - Digital outputs DO
  - Master-slave connection RS485
  - BMS connection (optional) RS485
  - Control panel
  - RJ45 socket as service access to the user interface
The following sensors are arranged in the unit to control the single room control system (the actual room temperature is recorded 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
2-pipe aluminium copper tube heat exchanger for air heating, matched to project-specific data, easily removable for cleaning (depends on the connection to the main pipe - by others, not included in the TROX supply package), drainage and venting option per heating circuit, arrangement on the room side on the right. We recommend a connection to the pipe network (provided by others) with flexible hoses (not included in the TROX supply package) so that the heat exchanger can be easily removed for cleaning
The transfer point of the heat exchanger are the union nuts on which the control components (valve including actuator in the return line, lockshield in the flow line) are manually preassembled
Easy to clean condensate drip tray with condensate drain (Ø 12 × 1 [mm] made of galvanised sheet steel, powder-coated, RAL 9005)
Outdoor air filter as Mini Pleat filter class ePM1 (fine dust filter):
- Filter class to ISO16890: ISO ePM1 65 %
- Eurovent-certified
- ePM1 filter media made from high-quality, wet-strengthened glass fibre paper are pleated, the spacers are made from thermoplastic hot-melt adhesive and ensure uniform spacing (4 mm) between the pleats
- The frame is made of moisture-resistant, non-woven fibre, with lugs (for pulling it out) and must not reduce the flow cross section (filter size = flow cross section).
- Filter area >= 3.5 m²
Extract air filter class G3 (coarse dust filter) as flat filter medium, filter class according to ISO16890: ISO coarse 50 %
Quick change of the filters is possible, since the filter insert can be opened without tools after opening the casing that is provided by others via user-friendly quarter-turn fasteners (accessibility must not be restricted by the under sill trim that is provided by others)
Monitoring of the filter life by integrated differential pressure monitoring
Closed cell sealing tapes for sealing and adaptation to the outer casing (by others) are not included in the TROX supply package
The under sill trim provided by the customer is perforated in areas to be specified for the introduction of supply air, for extract air and secondary air intake, and must not restrict maintenance work and unit assembly and disassembly on the front of the unit
Clear distance between the front edge of the unit and the inner edge of the under sill trim approx. 30 mm
The front of the device must be completely accessible after disassembly of the outer casing

Units – dimensions and weight:
Width: approx. 605 mm (without fixing brackets)
Height: approx. 2200 mm (without levelling feet, without fixing bracket)
Depth: approx. 413 mm (incl. facade sealing)

Weight: approx. 145 kg

FSL-CONTROL III controller

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

FSL-CONTROL III is described as stand-alone single room control equipment with a simple timer. Optional expansions, such as connection to the central BMS provided by others via Modbus TCP / Modbus RTU, BACnet MS/TP or BACnet IP, humidity sensors, return flow temperature sensors, electromotive valve actuators or pressure-independent control valves are included in the product range, but must be replaced with the standard components in the following description. A room temperature signal is also required. Various room control panels and sensors are available for this purpose. The corresponding optional equipment text modules can be found in the appendix of the following standard equipment for room-autonomous operation. We recommend commissioning by our technical service. You will find related text modules below.

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

Single room controller for mounting on DIN mounting rail in the unit or in a separate control casing
42 digital or analogue inputs and outputs
A micro SD card with up to 2 GB storage space is integrated as a flash storage medium. The trend data is stored here and can be accessed via the RJ45 service socket
Equipped at the factory 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 modulating bypass damper or supply air temperature control for isothermal ventilation
CO2₂-guided air quality control
Year-round heat recovery use
Filter monitoring
Configurable DI, e.g. for connection (by others) of PIR sensors, window contacts, holiday switching, etc.
Alarm signals type A (= switch-offs) 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

CO₂sensor (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 as sensing element, resistance 10 kΩ at 25 °C, measuring range 0 – 50 °C
Especially fast 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 as sensing element, resistance 10 kΩ at 25 °C, measuring range -30 – 50 °C

Water side components

Water-side components (order code .../HV-R-…/KV-R-…):

Valve actuator: 1 × thermoelectric actuator for opening and closing valves, with position indicator, including pluggable power rating, supply voltage 24 V DC, control voltage 0 – 10 V DC, power consumption 1 W, degree of protection: IP 54
Straight-way valve: 1 × small straight-way valve ½" as standard, pre-assembled hand-tight, PN 16, nominal width 10, k_VS 0.4 (alternatively: 0.25, 0.63 or 1.0 m³/h – please specify the required k_VS value), threaded connection G 1/2B, fluid temperature 1 - 110 °C
Lockshields: 1x lockshield on both sides ½", manually pre-assembled, nominal width DN 15; ½ inch, valve body straight through with male thread on both sides, flat seal, for flow restriction and shut-off, operating temperature maximal 120 °C

Optional control accessories

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

TROX control panels for FSL-CONTROL III

At least one room temperature signal is required per room. There are different variants of TROX control panels available, optionally with or without step switching. Additionally we offer a room temperature sensor RTF without control elements. Alternative control panels provided by the customer must be connected via bus communication:

Control panels with selector switch for surface mounting:

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

Supplied loose as accessory, with room temperature sensor, setpoint adjuster (blue or white), override button, LED and 3-step switch as well as off and automatic, assembly on 60 mm flush box or directly on the wall, NTC thermistor as sensor element, resistance 20 kΩ at 25 °C, dimensions (B x H x T): 99 x 104 x 30 mm, operating temperature: 6 - 40 °C

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

Supplied loose as an accessory, with room temperature sensor, setpoint adjuster (blue or white), override button, LED and 3-step switch as well as off and automatic, casing made from pure white PVC0 (RAL 9010) assembly on 60 mm flush box or directly on the wall, NTC thermistor as sensor element, resistance 20 kΩ at 25 °C, dimensions (B x H x T): 84.5 x 84.5 x 25 mm, operating temperature: -35 – 70 °C

Control panels without selector switch for surface mounting:

Control panel without selector switch, for surface mounting, type Schneider

Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 10 kΩ, protection level: IP 20, wall mounting or on 70 mm flush-mounted box, dimensions (B x H x T) 84 x 116 x 24 mm, colour light grey/white

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

Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20, dimensions (B x H x T) 84.5 × 84.5 × 25 mm

Room temperature sensor for surface mounting:

Room temperature sensor TROX RTF, surface mounting

Supplied loose as additional part, room sensor without control elements, measuring range: -35...- 70 °C, sensor NTC 10 kΩ, screw terminal, d = 1.5 mm, protection level IP 20, for mounting on the face of the wall or on 70 mm flush-mounted box, dimensions (B x H x 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 frame from a wide range of switch ranges, the unit is suitable for particularly design-oriented facilities.

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

Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20

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

Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20

Control panel without selector switch, for flush mounting, type Thermokon, switch from Busch Jäger future linear range, white

Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20

Further 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, for flush mounting, type Thermokon, switch from Gira E2 range

Supplied loose as additional part, with mode display and button, sensor NTC 20 kΩ, protection class: IP 20

Further switch programmes on request

Electromotive valve actuator:

As an alternative to the standard installed thermoelectric actuator

1 x electromotive actuator for opening and closing valves, supply voltage AC/DC 24 V, maximum power consumption 2.5 VA, signalling of control signal 3-point DC 0...10 V, permissible fluid temperature 1...110 °C

Pressure independent control valve:

As an alternative to the standard installed straight-way small valve

1 x pressure-independent control valve, manually pre-assembled with modulating open and close control in combination with an externally adjustable dynamic volume flow controller, with full valve authority, nominal width DN 10, ½ inch, valve casing straight through with male thread on both ends, flat seal, fluid temperature 0...120 °C

Interface for connection to central building management system (BMS) provided by others:

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

To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using Modbus TCP protocol. Additionally incl. web server for simplified configuration, commissioning and remote monitoring of the device. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.

Modbus TCP interface (Ethernet)

BACnet IP interface including web server (order code .../BI/...)
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using BACnet IP protocol. Additionally incl. web server for simplified configuration, commissioning and remote monitoring of the device. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.

BACnet IP interface (Ethernet)

Modbus RTU (order code .../MR/...)
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using Modbus RTU protocol. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.

Modbus RTU interface (RS485)

BACnet MS/TP (order code .../BM/...)
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using BACnet MS/TP. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.

BACnet MS/TP interface (RS485)

Commissioning of the decentralised ventilation units

Commissioning / parameter setting of decentralised ventilation units without connection to the central building management system

Visual inspection of the unit connections carried out by others for compliance with the respective installation specifications from the installation and configuration instructions: air connections, heating/cooling connection, electrical connections, integration into the installed unit casing, connections of external participants.
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 (actuators, fans, valves, dampers, sensors)
Checking the project-specific control functions including any special functions such as potential-free switch contacts
Documentation of the device settings, as well as their use in a service report. The service report must be signed by your company as the customer or your representative
The invoice is made as a flat rate, derived from the number of devices and distance

Commissioning / parameter setting of decentralised ventilation units with connection to the central building management system

Visual inspection of the unit connections carried out by others for compliance with the respective installation specifications from the installation and configuration instructions: air connections, heating/cooling connection, electrical connections, integration into the installed unit casing, connections of external participants, central building management system connections
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 (actuators, fans, valves, dampers, sensors)
Checking the project-specific control functions including any special functions such as potential-free switch contacts
Function test of the communication to the central BMS in cooperation with the ordered controls company:
Check that the settings that are provided by others comply with the specifications in the installation and configuration instructions
Input test of the data points sent by the customer
Output test of the output data points
Trial operation of the operating conditions switchable by the central BMS
Documentation of the device settings, as well as their use in a service report. The service report must be signed by your company as the customer or your representative
The invoice is made as a flat rate, derived from the number of devices and distance

Instruction in operation and maintenance

One-off 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 maintenance work
The invoice is a flat rate and is carried out by the responsible sales representative

SCHOOLAIR-V

–

397 × 2160 × 359

–

0.4

–

0.4

1 Type
SCHOOLAIR-V vertical under sill ventilation unit

2 Variant
No entry required: standard
HE high heat recovery percentage
HV high volume flow rate and rotary heat exchanger for heat recovery

3 Heat exchanger
2 2-pipe
4 4-pipe
EH electric air heater (SCHOOLAIR-V-HV)

4 Construction
KO without condensate drain
KM with condensate drain (SCHOOLAIR-V, SCHOOLAIR-V-1800, SCHOOLAIR-V-HV)
KR with condensate drain, extract air on the right when viewed from the room (SCHOOLAIR-V-HE)
KL with condensate drain, extract air on the left when viewed from the room (SCHOOLAIR-V-HE)

5 Dimensions [mm]
B × H × T
397 × 2160 × 359 (2-pipe)
397 × 2350 × 359 (4-pipe)
600 × 1800 × 359 (2- or 4-pipe, length 1800)
600 × 2000 × 408 (2- or 4-pipe, construction HE)
605 × 2200 × 413 (2- or 4-pipe, construction HV)

6 Control system
OR without control
C3 with FSL-CONTROL III

7 Control function
MA Master
SL Slave

8 Real-time clock, only master
No entry required: none
T with

9 Interface
No entry required: none
MT with Modbus TCP
MR with Modbus RTU
BI with BACnet IP
BM with BACnet MS/TP

10 Air quality sensor, only master
No entry required: none
C with CO₂sensor
V with VOC sensor

11 Supply air temperature sensor
Z with

12 Fresh air temperature sensor, only master
No entry required: none
A with

13 Heating valve
Only 2-pipe systems
HV with

14 Lockshield - heating circuit
R with

15 kVS value - heating valve
0.25 Straight-way valve
0.40 Straight-way valve
0.63 Straight-way valve
1.00 Straight-way valve
F0.50 Pressure-independent control valve

16 Cooling valve
Only 4-pipe systems
KV with

17 Lockshield - cooling circuit
R with

18 kVS valve - cooling valve
0.25 Straight-way valve
0.40 Straight-way valve
0.63 Straight-way valve
1.00 Straight-way valve
F0.50 Pressure-independent control valve

Order example: SCHOOLAIR-V-HV-2/KO/605x2200x413/C3-MA-T/C/Z/A/HV-R-0.40

SCHOOLAIR-V	Vertical under sill ventilation unit
HV	High volume flow rate and rotary heat recovery unit
2	With 2-pipe heat exchanger
KO	Without condensate drain
C3	With FSL-CONTROL III
MA	Master construction
T	With real time clock
C	With CO₂sensor
Z	With supply air temperature sensor
A	With fresh air temperature sensor
HV-R-0.40	With straight-way valve (heating circuit) kvs 0.40 and lockshield

Dimensions, Product details

Installation example

Installation and commissioning

Under sill installation, floor-standing
Level adjustment using the 4 levelling feet (+40 mm)
4 fixing brackets (supplied separately) for screw-fixing the unit to the wall, alternatively 2 fixing points below the heat exchanger can be used
Fresh air and exhaust air openings (2) have to be provided by others; the openings should preferably be sloping towards the outside
Weather protection for the fresh air and exhaust air openings to be provided by others
Installation and connections to be performed by others; fixing, connection and sealing material to be provided by others
The water flow and return connections are on the right-hand side of the unit when seen from the room
Vents and drainage by others
The electrical connection is on the right-hand side of the unit when seen from the room
We recommend using flexible hoses to connect the unit to the pipework as they facilitate removing the heat exchanger for cleaning.
The under sill trim (by others) must not obstruct installation or deinstallation of the unit and maintenance access on the front of the unit

Downloads

product information

Product data sheet SCHOOLAIR-V-HV

SA-V-HV_PD_2021_05_18_DE_en Product data sheet 640 KB pdf
SCHOOLAIR-V-HV_BIM 3D

260 KB zip

brochures

Sales flyer

Sales flyer Type SCHOOLAIR-V-HV 1000 KB pdf

certificates

Conformity declaration Type SCHOOLAIR-V-HV

Conformity declaration 71 KB pdf
Conformity declaration Decentralised ventilation units

Conformity declaration 120 KB pdf
Declaration of hygiene conformity Type SCHOOLAIR-V

SCHOOLAIR-V_HC_2020_06_05_DE_en Hygiene certificate 1000 KB pdf
ErP-product information Type SCHOOLAIR-V-HV

Schoolair-V-HV_ErP_2021_08_DE_en Certificat 190 KB pdf

operation manuals

Installation and configuration manual Type FSL-CONTROL III

FSL-C_III_SM_A00000080125_V1_2020_04_GB_en 4,9 MB pdf
Installation and configuration manual Type FSL‑CONTROL II

SM_2018_04_A00000046303_FSL-CONTROL_II_V6 1,5 MB pdf
Installation and operating manual SCHOOLAIR-V

IOM_2020_05_A00000055327_Schoolair-V-x_V5_GB_en Installation and operating manual 2,1 MB pdf
Installation and operating manual Type SCHOOLAIR-V

IOM_2020_05_A00000055327_Schoolair-V-x_V5_GB_en Installation and operating manual 2,1 MB pdf
Installation and operating manual FSL / SCHOOLAIR

Installation and operating manual 450 KB pdf

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SCHOOLAIR-V-HV

SUPPLY AND EXTRACT AIR UNIT WITH SWITCHOVER OPTION TO SECONDARY AIR OPERATION, INCLUDING ROTARY HEAT RECOVERY UNIT AND HEAT EXCHANGER FOR VERTICAL INSTALLATION ON THE FACADE

General information

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

Dimensions, Product details

Downloads

product information

Product data sheet SCHOOLAIR-V-HV

SCHOOLAIR-V-HV_BIM 3D

brochures

Sales flyer

certificates

Conformity declaration Type SCHOOLAIR-V-HV

Conformity declaration Decentralised ventilation units

Declaration of hygiene conformity Type SCHOOLAIR-V

ErP-product information Type SCHOOLAIR-V-HV

operation manuals

Installation and configuration manual Type FSL-CONTROL III

Installation and configuration manual Type FSL‑CONTROL II

Installation and operating manual SCHOOLAIR-V

Installation and operating manual Type SCHOOLAIR-V

Installation and operating manual FSL / SCHOOLAIR

TECHNICALLY NECESSARY

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