Conforms to VDI 6022
Functional description
Decentralised supply and extract air units ventilate the room and cover the cooling and heating load according to 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 and it can be switched off when it is sensible with regard to energy efficiency. If necessary, the supply air is heated or cooled near the ceiling by the heat exchanger before it is discharged to the room as a displacement flow (optional in the case of 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 indoor 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 outdoor air and secondary air operation. If the power fails, the outdoor 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 ceiling with a medium velocity. The Coanda effect deflects the air jet upwards, where it remains attached to the underside of the ceiling, thereby increasing the throw distance. Once it has reached the wall, which is located opposite the air outlet, an air curtain is created. The supply air reaching the occupied zone has a very low airflow velocity and flows strongly at heat sources (e.g. people and devices), thus giving rise to natural convection. As a result, the air is primarily exchanged in these areas. The consumed air rises before it is extracted into the device directly under the ceiling and then released outside.
Width | 1640 mm |
Height | 400 mm |
Depth | 800 mm |
Volume flow rate | 150, 200, 250 m³/h (boost 300 m³/h) |
Nominal volume flow rate | 250 m³/h |
Sound power level | 32 – 47 dB(A) |
Heat recovery efficiency | 54 % |
Maximum operating pressure, water side | 6 bar |
Maximum operating temperature | 75 °C |
Supply voltage | 230 V AC ±10 %, 50/60 Hz |
Power rating | 197 VA |
Weight | 100 kg |
X-CUBE/SCHOOLAIR-D (example 2-pipe version, active heating)
Supply air flow rate | m³/h | 150 | 200 | 250 | 300 |
Total heating capacity | W | 2570 | 3420 | 4290 | 5100 |
Room heating capacity | W | 757 | 1002 | 1271 | 1469 |
Air temperature inside the unit | °C | -12 | -12 | -12 | -12 |
Supply air temperature | °C | 33.4 | 33.3 | 33.5 | 33.0 |
Hot water flow rate | l/h | 60 | 90 | 130 | 170 |
Water temperature, inlet | °C | 50 | 50 | 50 | 50 |
Water temperature, outlet | °C | 12.7 | 16.9 | 21.3 | 23.9 |
Water side pressure drop | kPa | 3.4 | 7.0 | 13.5 | 21.6 |
Sound power level LWA | dB(A) | 32 | 38 | 43 | 47 |
Sound pressure level including 8 dB system attenuation | dB(A) | 24 | 30 | 35 | 39 |
Active power Pel | W | 26 | 36 | 53 | 72 |
Air-side data Heating mode:
X-CUBE/SCHOOLAIR-D (example 2-pipe version – isothermal supply air)
Supply air flow rate | m³/h | 150 | 200 | 250 | 300 |
Total heating capacity | W | 1890 | 2480 | 3100 | 3740 |
Room heating capacity | W | 79 | 60 | 85 | 113 |
Air temperature inside the unit | °C | -12 | -12 | -12 | -12 |
Supply air temperature | °C | 21.4 | 20.8 | 20.9 | 21.0 |
Hot water flow rate | l/h | 40 | 55 | 75 | 100 |
Water temperature, inlet | °C | 50 | 50 | 50 | 50 |
Water temperature, outlet | °C | 8.8 | 10.8 | 14.0 | 17.4 |
Water side pressure drop | kPa | 1.1 | 2.0 | 3.4 | 5.7 |
Sound power level LWA | dB(A) | 32 | 38 | 43 | 47 |
Sound pressure level including 8 dB system attenuation | dB(A) | 24 | 30 | 35 | 39 |
Active power Pel | dB(A) | 26 | 36 | 53 | 72 |
Air-side data Heating mode:
X-CUBE/SCHOOLAIR-D (example 4-pipe version)
Supply air flow rate | m³/h | 150 | 200 | 250 | 300 |
Total cooling capacity | W | 680 | 910 | 1070 | 1290 |
Room cooling capacity | W | 391 | 528 | 593 | 721 |
Air temperature inside the unit | °C | 32 | 32 | 32 | 32 |
Relative humidity | % | 40 | 40 | 40 | 40 |
Water content of the dry air | g/kg | 11.9 | 11.9 | 11.9 | 11.9 |
Supply air temperature | °C | 18.2 | 18.1 | 18.9 | 18.8 |
Condensation | g/h | 0 | 0 | 0 | 0 |
Chilled water flow rate | l/h | 110 | 150 | 150 | 200 |
Water temperature, inlet | °C | 16 | 16 | 16 | 16 |
Water temperature, outlet | °C | 21.3 | 21.2 | 22.1 | 21.6 |
Water side pressure drop | kPa | 1.9 | 3.2 | 3.2 | 5.3 |
Total heating capacity | W | 2880 | 3720 | 4440 | 5080 |
Room heating capacity | W | 892 | 1089 | 1169 | 1182 |
Air temperature inside the unit | °C | -12 | -12 | -12 | -12 |
Supply air temperature | °C | 38.8 | 37.3 | 35 | 32.8 |
Hot water flow rate | l/h | 100 | 150 | 180 | 200 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 34.9 | 38.4 | 38.5 | 37.9 |
Water side pressure drop | kPa | 4.5 | 9.2 | 12.5 | 15.1 |
Sound power level LWA | dB(A) | 32 | 38 | 43 | 47 |
Sound pressure level including 8 dB system attenuation | dB(A) | 24 | 30 | 35 | 39 |
Active power Pel | W | 26 | 36 | 53 | 72 |
Air-side data Cooling mode:
Air-side data Heating mode:
SCHOOLAIR-D-0-2/1690×400×800/C3
Ventilation units for installation on the façade in the ceiling area
Please note:
The ceiling ventilation unit variant described is equipped with an integrated individual room control for independent classroom operation.
The supplied controllers contain the parameters of the standard control for self-sustaining operation according to our control description.
Ventilation unit for schools – ceiling installation – master unit
TROX X-CUBE/SCHOOLAIR-D ventilation unit for ceiling installation, for supply and extract air function, and switchover option to secondary air mode (depending on room air quality), heat recovery and heating function for installation in the ceiling area:
Units - dimensions and weight:
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 ...):
Real time clock (RTC)
Real Time Clock (RTC/real time clock) (order code ...-T/...):
CO2 sensor
CO2 sensor (order code…/C/…):
Supply air temperature sensor
Supply air temperature sensor (order code .../Z/...):
Outdoor air temperature sensor
Outdoor air temperature sensor (order code .../A/...):
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, kvs 0.4 (alternatively 0.25, 0.63 or 1.0 m³/h - please let us know the required kvs 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
Digital room control panels for surface mounting:
For operation and adjustment of the ventilation units.
Control panels with selector switch for surface mounting:
Control panel with selector switch, type Thermokon, for surface mounting:
Control panels without selector switch for surface mounting:
Control panel without selector switch, type Thermokon, for surface mounting:
Room temperature sensor for surface mounting:
Room temperature sensor TROX RTF, surface mounting
Control panels without selector switch for flush mounting:
Other switch programmes on request.
Control panels without selector switch and without setpoint value adjuster, for flush mounting:
Other switch programmes on request
As an alternative to the thermoelectric actuator, installed as standard
Pressure-independent control valve
As an alternative to the small straight-way valve, installed as standard
BACnet IP interface including web server (order code .../BI/...)
Modbus RTU (order code .../MR/...)
BACnet MS/TP (order code .../BM/...)
Version as SLAVE DEVICE
Identical to the MASTER DEVICE, as described above, but with the following deviations:
Commissioning of the decentralised ventilation units
Commissioning/parameterisation of the decentralised ventilation units without integration into an on-site MCE/BACS
Commissioning/parameterisation of the decentralised ventilation units with integration into an on-site MCE/BACS
Instruction in operation and maintenance
SA-D | – | – | 0 | – | 4 | – | 1 | – | BB | – | W | / | 1640 × 400 × 800 | / | 0 | / | C3 | – | MA | – | T | / | MR | / | C | / | Z | / | A | / | HV | – | R | – | 0,40 | / | KV | – | R | – | 0,40 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |||||||||||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
Order example: SA-D-0-4-1-BB-W/1640×400×800/0/C3-MA-T/MR/C/Z/A/HV-R-0.40/KV-R-0.40
Type | SA-D | Ventilation unit for ceiling installation X-CUBE/SCHOOLAIR-D |
Variant | - | Standard |
Installation situation | 0 | integrated in suspended ceiling |
Heat exchanger | 4 | 4-pipe |
Heat exchanger construction | 1 | Heat exchanger type 1 |
Construction | BB | (Outdoor air) connection to the rear, (exhaust air) connection to the rear |
Connection | W | Wall connection sealing kit for outdoor air and exhaust air |
Nominal size [mm] | 1640×400×800 | Width 1640, height 400, depth 800 |
Exposed surface | 0 | powder-coated, RAL 9010 (pure white) |
Control system | 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) |
Type SCHOOLAIR-D
Supply and extract air unit with heat exchanger and heat recovery, secondary air option (based on air quality), for installation below the ceiling slab
Ready-to-operate decentralised ventilation unit that provides good comfort levels, used for the ventilation and extract ventilation of rooms such as classrooms in schools
Optional equipment and accessories
For further product information please click here
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051