X-CUBE SCHOOLAIR-V-1800

Tested to VDI 6022

Plate heat exchanger

Cross flow heat recovery unit

SCHOOLAIR-V, Water connections

Water connections

Inspection access to filter and heat recovery unit

Levelling foot

X-CUBE SCHOOLAIR-V-1800

Supply and extract air unit with switchover option to secondary air operation, including cross flow heat recovery unit and heat exchanger for vertical installation on the façade

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

Acoustically optimised EC fans with low specific fan power, SFP = 0 to EN 16798-3
Cross flow heat recovery unit (heat recovery efficiency 57 %)
Construction height of only 1800 mm
Highly efficient heat exchanger as 2-pipe or 4-pipe system
Heat exchanger connection is on the right when seen from the room
Condensate drip tray with or without condensate drain
Heat recovery all year round (optional)
Reduced fine dust and pollen contamination due to integral filters that conform to VDI 6022 – filter class ISO ePM1 65% and extract air ISO coarse 70%
Easy filter change, no tools required
Motorised shut-off dampers, normally closed (NC)
Installation without interruption of school operations

Optional equipment and accessories

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

Technical information

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

1 Outdoor air temperature sensor (optional)
2 Shut-off damper with actuator (outdoor air and exhaust air)
3 Outdoor air filter
4 Fans (supply air and extract air)
5 Recuperative cross flow plate heat exchanger
6 Sound attenuator
7 Heating coil
8 Cooling coil (only SCHOOLAIR-V-4)
9 Supply air temperature sensor
10 Bypass damper with actuator
11 CO₂sensor (optional)
12 Extract air filter
SEH Single room exhaust air
SET Single room extract air
SRO Single room outdoor air
SRS Single room supply air
SEC Secondary air (optional)

Functional description

Decentralised supply and extract air units ventilate the room and cover the cooling and heating load in accordance with the technical data. An EC centrifugal fan takes in the outdoor air which then flows through the motorised shut-off damper and the outdoor air filter. The outdoor air then flows through the cross flow heat recovery unit, which can be switched off if it is more energy efficient. If necessary, the air is heated or cooled by the heat exchanger before it is supplied into the room as a displacement flow. 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 indoor air quality is sufficient, the FSLCONTROL III control system switches to energy-efficient secondary air mode by closing the outdoor air dampers. The control system compares the room air quality setpoint value to the actual value measured by the CO2 sensor and switches automatically between outdoor air and secondary air operation. In case of a power failure, the outdoor air and exhaust air dampers are closed to ensure fire protection, frost protection and to avoid draughts. This is ensured by an energy storage system in each actuator. Near the external wall, the supply air is discharged into the room with a medium velocity between 0.5 and 0.8 m/s. Due to the induction effect, the supply air velocity is rapidly reduced after entering the room. As a result, in cooling mode, the supply air spreads out like displacement flow over the entire floor area. Near heat sources such as people or equipment, a lift current is formed by natural convection, so that the air is exchanged primarily in these areas.

Width	604 mm
Height	1800 mm
Depth	370 mm
Volume flow rate	150, 230, 280 m³/h (boost 350 m³/h)
Nominal volume flow rate	280 m³/h
Sound power level	31 – 47 dB(A)
Heat recovery efficiency	57 %
Maximum operating pressure, water side	6 bar
Maximum operating temperature	75 °C
Supply voltage	230 V AC ±10 %, 50/60 Hz
Power rating	217 VA
Weight	85 kg

X-CUBE/SCHOOLAIR-V-1800: Heat exchanger type 2 (design example 2-pipe version - active heating)

Supply air flow rate	m³/h	150	230	280	350
Total heating capacity	W	2630	4020	4920	5810
Room heating capacity	W	808	1239	1530	1569
Air temperature inside the unit	°C	-12	-12	-12	-12
Supply air temperature	°C	34.3	34.3	34.5	31.9
Condensate	g/h	0	0	0	0
Hot water flow rate	l/h	75	130	180	200
Water temperature, inlet	°C	50	50	50	50
Water temperature, outlet	°C	19.5	23.1	26.2	24.7
Water side pressure drop	kPa	0.6	1.7	3.1	3.7
Sound power level L_WA	dB(A)	32	38	42	47
Sound pressure level with 8 dB system attenuation	dB(A)	24	30	34	39
Active power P_el	W	25	37	48	68

Air-side data Heating mode:

Temperature/relative humidity outdoor air: -12 °C/90 %
Temperature/relative humidity indoor air: 20 °C/35 %

X-CUBE/SCHOOLAIR-V-1800: Heat exchanger type 1 (design example 2-pipe version - isothermal supply air injection)

Supply air flow rate	m³/h	150	230	280	350
Total heating capacity	W	1910	2810	3500	4310
Room heating capacity	W	90	35	105	79
Air temperature inside the unit	°C	-12	-12	-12	-12
Supply air temperature	°C	21.6	20.4	21.0	20.6
Condensate	g/h	0	0	0	0
Hot water flow rate	l/h	40	60	80	105
Water temperature, inlet	°C	50	50	50	50
Water temperature, outlet	°C	8.6	9.2	12.0	14.3
Water side pressure drop	kPa	0.9	1.9	3.1	5.0
Sound power level L_WA	dB(A)	32	38	42	47
Sound pressure level with 8 dB system attenuation	dB(A)	24	30	34	39
Active power P_el	W	25	37	48	68

Air-side data Heating mode:

Temperature/relative humidity outdoor air: -12 °C/90 %
Temperature/relative humidity indoor air: 20 °C/35 %

X-CUBE/SCHOOLAIR-V-1800: Heat exchanger type 1 (design example 4-pipe version)

Supply air flow rate	m³/h	150	230	280	350
Total cooling capacity	W	660	920	1070	1240
Room cooling capacity	W	355	457	511	538
Air temperature inside the unit	°C	32	32	32	32
Relative humidity	%	40	40	40	40
Water content of the dry air	kg	11.9	11.9	11.9	11.9
Supply air temperature	°C	18.6	19.8	20.3	21.2
Condensate	g/h	0	0	0	0
Chilled water flow rate	l/h	160	180	200	200
Water temperature, inlet	°C	16	16	16	16
Water temperature, outlet	°C	19.5	20.4	20.6	21.3
Water side pressure drop	kPa	12.1	14.9	17.9	17.9
Total heating capacity	W	2570	3710	4260	4870
Room heating capacity	W	757	927	875	633
Air temperature inside the unit	°C	-12	-12	-12	-12
Supply air temperature	°C	33.4	30.7	28.3	24.8
Condensate	g/h	0	0	0	0
Hot water flow rate	l/h	100	180	200	200
Water temperature, inlet	°C	60	60	60	60
Water temperature, outlet	°C	37.5	42.0	41.4	38.8
Water side pressure drop	kPa	3.0	8.5	10.2	10.2
Sound power level L_WA	dB(A)	32	38	42	47
Sound pressure level with 8 dB system attenuation	dB(A)	24	30	34	39
Active power P_el	W	25	37	48	68

Air-side data Cooling mode:

Temperature/relative humidity outdoor air: 32 °C/40 %
Temperature/relative humidity indoor air: 26 °C/50 %

Air-side data Heating mode:

Temperature/relative humidity outdoor air: -12 °C/90 %
Temperature/relative humidity indoor air: 20 °C/35 %

SCHOOLAIR-V-2/KM/600x1800x370/C3

Under sill units for vertical installation on the façade

Please note:
The under sill ventilation unit variant described has an integrated single room control system for autonomous classroom operation.

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

Ventilation unit for schools – vertical installation - master unit

Under sill ventilation unit TROX X-CUBE/SCHOOLAIR-V-1800 with supply and extract air function, heat recovery system and switchover option to secondary air operation (air quality dependent), as well as heating function, for vertical installation on the façade:

Unit casing made of galvanised sheet steel, cover and sheet metal connections with deep-drawn threads and stainless steel cross-head screws, all internal air ducts sealed and lined as required, internal cable penetrations sealed, exposed surface powder-coated (RAL 9005, jet black)
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
Height-adjustable levelling feet (+40 mm) to compensate for structural tolerances
4 slotted holes (6.5 × 13.5 mm) at the back of the unit (top and bottom, behind the heat exchanger) allow for fixing to the unit to a wall
Connection to the on-site outdoor air and exhaust air openings of the façade by means of circumferential closed-pore sealing tape on the rear of the unit, d = 10 mm. The suction and discharge resistance of the on-site construction should not exceed 20 Pa at nominal volume flow rate
Extract air removal at the top front of the unit
2 energy-saving EC centrifugal fans, supply and extract air fans classified as SFP 0 (< 300 W/(m³/s)) according to EN 16798-3:2017-11, electrical power consumption of the entire unit 280 m³/h <48 W at the nominal volume flow rate; the connecting cable has to be suitable for a power rating of 217 VA
Suitable for 3 speed levels (150, 230 and 280 m³/h as well as boost level of 350 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
The technical requirements of EU directive 1253/2014 for non-residential ventilation systems are fulfilled and documented in accordance with the directive
Sound power level with supply air or extract air operation at 150/230/280/350 m³/h = 31/38/42/47 dB(A) (equals a sound pressure level of 23/30/34/39 dB(A) with 8 dB room attenuation). The measurement data refers to sound power measurements of a single unit in a reverberation chamber according to accuracy class 1. Results may vary, depending on the installation situation
Integral cross flow heat exchanger, recuperative, salt water resistant aluminium construction, highly efficient thanks to special plate design, plate spacing and package length, including condensate drip tray
Electromotive bypass that allows the airflow to bypass the heat recovery unit, 24 V open/close actuator (modulating), signalling by means of integral single room control system
Motorised shut-off dampers in the outdoor air and exhaust air area, normally closed in inactive state via energy storage, actuator 230 V, open/closed, signalling via 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 integrated CO₂sensor) is within the defined limits. For this purpose, the shut-off dampers are closed, the self-powered 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 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 on-site electrical installation:
- 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):
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 or air cooling (choice of 4-pipe system with additional cooling), 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/cooling circuit, arrangement on the room side on the right. We recommend flexible hoses (not part of the supply package) to connect the unit to the existing pipe network (by others) as they simplify removal of the heat exchanger for cleaning
Transfer points are the hand tight pre-assembled control components
- Valves in the return: transfer with G ½" external thread, flat seal
- Lockshields in the flow: transfer with G ½" external thread, flat seal
Easy-to-clean condensate drip tray with condensate drain Ø 12 × 1 mm, made from galvanised sheet steel (powder-coated RAL 9005)
Outdoor air filter as Mini Pleat filter, class ePM1 (fine dust filter):
- Filter class according to ISO 16890: ISO ePM1 65 %
- Eurovent-certified
- ePM1 filter media made of high-quality, wet-strength glass fibre paper, and laid in tight pleats. The spacers are made of thermoplastic hot-melt adhesive and ensure that the pleats are evenly spaced (4 mm) from each other
- The frame is made of moisture-resistant non-woven fibre with pull-out brackets and must not reduce the flow cross-section (filter size = flow cross-section)
- Filter area >= 3.3 m²
- Extract air filter class G3 (coarse dust filter) as flat filter medium, filter class according to ISO 16890: ISO coarse 50 %
Filters can be changed quickly, as the filter insert can be opened without tools after opening the on-site casing using user-friendly quarter-turn fasteners (accessibility must not be restricted by the on-site under sill trim)
Closed cell sealing tapes for sealing and adaptation to the outer casing are not included in the TROX supply package
The on-site under sill trim has perforations in areas to be specified for the supply air entry, for extract air intake and secondary air intake and must not restrict installation, removal, or maintenance work on the front of the unit
Clear distance of approx. 30 mm between the front edge of the unit and the inner edge of the under sill trim
The front of the unit must be completely accessible after removal of the outer casing

Units - dimensions and weight

Width: approx. 600 mm
Height: approx. 1800 mm (without levelling feet)
Depth: approx. 370 mm (without seals)
Approx. 85 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

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, 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

Water side components

Water-side components (Order code…/HV-R-…):

Valve actuator:

1 × thermoelectric actuator for opening and closing valves, with position indicator, including plug-in connecting cable, operating voltage 24 V DC, control voltage 0 - 10 V DC, power consumption 1 W, protection class: IP 54

Straight-way valve:

1 × small straight-way valve ½" standard, hand-tight pre-assembled, PN 16, DN 10, k_vs 0.4 (alternatively 0.25, 0.63 or 1.0 m³/h - please let us know the required k_vs value), straight-way valve body with external thread on both sides ½" flat sealing, media temperature 1 to 110 °C

Lockshield:

1 × lockshield on both sides ½", hand-tight pre-assembled, nominal width DN 15; straight-through valve body with external thread on both sides ½" flat sealing, for regulating and shut-off, maximum media temperature 120 °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 loosely 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, type Thermokon, for surface mounting:

Supplied loosely as an accessory, with room temperature sensor, setpoint adjuster, override button, LED and 3-step selector switch as well as off and automatic, casing made of PVC0 pure white (RAL 9010), mounting on 60 mm flush-mounted box or directly on the wall, NTC thermistor as sensor element, resistance 20 kΩ at 25 °C, dimensions (B × H × T): 84.5 × 84.5 × 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 loosely 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 loosely 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 programme Berker S.1, polar white

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

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

Supplied loosely 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 programme Gira E2

Supplied loosely as an accessory, with mode display and push button, NTC sensor 20 kΩ, protection level: IP 20

Other switch programmes on request

Electromotive valve actuator:

As an alternative to the thermoelectric actuator, installed as standard

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

Pressure-independent control valve

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

1 × pressure-independent control valve, hand tight pre-assembled with modulating ON/OFF control in combination with an externally adjustable, dynamic volume flow controller, with full valve authority, nominal width DN 10, straight-through valve body with male thread on both sides ½" flat sealing, media temperature 0 to 120 °C

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

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

<ParaStyle:2:ExcelTable:1spaltig:TableCaption>
SA-V	–		–	4	–	1	–	KM	/	604 × 1800 × 370	/	C3	–	MA	–	T	/	MR	/	C	/	Z	/	A	/	HV	–	R	–	0,40	/	KV	–	R	–	0,40
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1		2		3		4		5		6		7		8		9		10		11		12		13		14		15		16		17		18		19

1 Type
SA-V vertical decentralised ventilation unit X-CUBE/SCHOOLAIR-V

2 Variant
No entry: Standard

3 Heat exchanger
2 2-pipe
4 4-pipe

4 Heat exchanger construction
Specify construction (technical design with TROX EPF or TROX CONFIGURATOR)

5 Construction
KM with condensate drain

6 Nominal size [mm]
Width × height × depth
604 × 1800 × 370

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

8 Control function
MA Master
SL Slave

9 Real time clock
Only with control function MA
No entry: without real time clock
T with real time clock

10 Interface
No entry: without interface
MT with Modbus TCP
MR with Modbus RTU (only with control function MA)
BI with BACnet IP
BM with BACnet MS/TP (only with control function MA)

11 Air quality sensor
Only with control function MA
No entry: without air quality sensor
C with CO₂sensor
V with VOC sensor

12 Supply air temperature sensor
Z with supply air temperature sensor

13 Outdoor air temperature sensor
Only with control function MA
No entry: without outdoor air temperature sensor
A with outdoor air temperature sensor

14 Heating valve
Only with heat exchanger 2 or 4
HV with thermoelectric actuator
HVE with electromotive actuator

15 Lockshield – heating circuit
Only with heat exchanger 2 or 4
R with lockshield

16 kVS value – heating valve
Only with heat exchanger 2 or 4
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)

17 Cooling valve
Only with heat exchanger 4
KV with thermoelectric actuator
KVE with electromotive actuator

18 Lockshield – cooling circuit
Only with heat exchanger 4
R with lockshield

19 kVS value – cooling valve
Only with heat exchanger 4
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: SA-V-4-1-KM/604×1800×370/C3-MA-T/MR/C/Z/A/HV-R-0.40/KV-R-0.40

Type	SA-V	Ventilation unit for ceiling installation X-CUBE/SCHOOLAIR-V
Variant	-	Standard
Heat exchanger	4	4-pipe
Heat exchanger construction	1	Heat exchanger type 1
Construction	KM	with condensate drain
Nominal size [mm]	604×1800×370	Width 604, height 1800, depth 370
Control	C3	with FSL-CONTROL III
Control function	MA	Master
Real time clock	T	with real time clock
Interface	MR	with Modbus RTU
Air quality sensor	C	with CO₂sensor
Supply air temperature sensor	Z	with supply air temperature sensor
Outdoor air temperature sensor	A	with outdoor air temperature sensor
Heating valve	HV	with thermoelectric actuator
Lockshield – heating circuit	R	with lockshield
kVS value – heating valve	0.40	0.40 (straight-way valve)
Cooling valve	KV	with thermoelectric actuator
Lockshield – cooling circuit	R	with lockshield
kVS value – cooling valve	0.40	0.40 (straight-way valve)

Product details

Installation and commissioning

Installation on the floor in front of the outside wall
Level adjustment using the 4 levelling feet (+40 mm)
4 fixing points at the inside for screw-fixing the unit to the wall or ceiling slab; this allows for a very small casing size
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: 0.035 m² for each outdoor air and exhaust air opening, and 0.11 m² for each supply air and extract air opening
Weather protection for the outdoor air and exhaust air openings to be provided by others
Installation and connections to be performed by others. Fixing, connecting and sealing material not included
Water supply and return connections are on the right-hand side of the unit, as seen from the room
The customer must ensure that the unit can be drained and vented.
The electrical connection is on the right-hand side of the unit, as seen from the room
We recommend using flexible hoses to connect the unit to the pipework so that the heat exchanger can be easily removed for cleaning.
The under sill trim provided by others must not obstruct maintenance access at the front of the unit or installation and removal of the unit.

Downloads

product information

Product data sheet Type X-CUBE SA-V-1800

SA-V-1800_PD_2024_07_10_DE_en Product data sheet 630 KB pdf

brochures

Brochure SCHOOLAIR TROX

AL_2022_05_School_Ventilation_DE_en_web brochure 3,6 MB pdf

certificates

Declaration of hygiene conformity Declaration of hygiene conformity

X-CUBE-SCHOOLAIR-V-1800_HC_2023_12_12_DE_en 660 KB pdf
ErP certificate Schoolair-V-1800

Schoolair-V-1800_ErP_2021_08_DE_en certificate 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 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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X-CUBE SCHOOLAIR-V-1800

Supply and extract air unit with switchover option to secondary air operation, including cross flow heat recovery unit and heat exchanger for vertical installation on the façade

Technical information

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

Product details

Downloads

product information

Product data sheet Type X-CUBE SA-V-1800

brochures

Brochure SCHOOLAIR TROX

certificates

Declaration of hygiene conformity Declaration of hygiene conformity

ErP certificate Schoolair-V-1800

operation manuals

Installation and configuration manual Type FSL-CONTROL III

Installation and configuration manual Type FSL‑CONTROL II

Installation and operating manual Type SCHOOLAIR-V

Installation and operating manual FSL / SCHOOLAIR

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

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