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 counter flow heat recovery unit, which can be switched off to protect it and if it is more energy efficient. Before the supply air flows into the room like displacement air, it is heated or cooled in the heat exchanger if required (optional for 4-pipe units). The extract air first passes through the outdoor 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 FSL-CONTROL III control system switches to energyefficient 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 CO2sensor 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 a capacitor 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 so that, in cooling mode, the supply air displaces the room air 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 | 2090 mm |
Height | 750 mm |
Depth | 420 mm |
Volume flow rate | 150, 225, 300 m³/h (boost 400 m³/h) |
Nominal volume flow rate | 300 m³/h |
Sound power level | 33 – 49 dB(A) |
Heat recovery efficiency | 88 % |
Maximum operating pressure, water side | 6 bar |
Maximum operating temperature | 75 °C |
Supply voltage | 230 V AC ±10 %, 50/60 Hz |
Power rating | 547 VA |
Weight | 115 kg |
X-CUBE/SCHOOLAIR-B-HE (example: 2-pipe version, active heating)
Supply air flow rate | m³/h | 150 | 225 | 300 | 400 |
Total heating capacity | W | 950 | 1480 | 2050 | 2690 |
Room heating capacity | W | 827 | 1232 | 1673 | 2191 |
Heat recovery efficiency | % | 90 | 87 | 85 | 83 |
Air temperature after heat recovery | °C | 18.7 | 18.0 | 17.6 | 17.1 |
Supply air temperature | °C | 37.5 | 37.4 | 37.7 | 37.4 |
Quantity of condensate | l/h | 0.5 | 0.7 | 0.9 | 1.1 |
Hot water flow rate | l/h | 30 | 50 | 80 | 120 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 32 | 34 | 38 | 41 |
Water side pressure drop | kPa | 1.5 | 3 | 6.5 | 13.5 |
Sound power level LWA | dB(A) | 33 | 40 | 44 | 49 |
Sound pressure level with 8 dB system attenuation | dB(A) | 25 | 32 | 36 | 41 |
Active power Pel | W | 29 | 47 | 80 | 137 |
Air-side data Heating mode:
X-CUBE/SCHOOLAIR-B-HE (example 2-pipe version – isothermal supply air)
Supply air flow rate | m³/h | 150 | 225 | 300 | 400 |
Total heating capacity | W | 250 | 400 | 520 | 630 |
Room heating capacity | W | 135 | 165 | 170 | 94 |
Heat recovery efficiency | % | 90 | 87 | 85 | 83 |
Air temperature after heat recovery | °C | 18.7 | 18.0 | 17.6 | 17.1 |
Supply air temperature | °C | 23.7 | 23.2 | 22.7 | 21.7 |
Quantity of condensate | l/h | 0.5 | 0.7 | 0.9 | 1.1 |
Hot water flow rate | l/h | 30 | 60 | 110 | 125 |
Water temperature, inlet | °C | 40 | 40 | 40 | 40 |
Water temperature, outlet | °C | 33 | 34 | 36 | 36 |
Water side pressure drop | kPa | 1.5 | 4.5 | 12 | 15 |
Sound power level LWA | dB(A) | 33 | 40 | 44 | 49 |
Sound pressure level with 8 dB system attenuation | dB(A) | 25 | 32 | 36 | 41 |
Active power Pel | W | 29 | 47 | 80 | 137 |
Air-side data Heating mode:
X-CUBE/SCHOOLAIR-B-HE (example: 4-pipe version)
Supply air flow rate | m³/h | 150 | 225 | 300 | 400 |
Total cooling capacity | W | 430 | 660 | 890 | 1090 |
Room cooling capacity | W | 401 | 601 | 802 | 962 |
Heat recovery efficiency | % | 90 | 87 | 85 | 83 |
Air temperature after heat recovery | °C | 26.6 | 26.8 | 26.9 | 27.0 |
Relative humidity | % | 55 | 54 | 54 | 53 |
Water content of the dry air | kg | 11.9 | 11.9 | 11.9 | 11.9 |
Supply air temperature | °C | 18 | 18 | 18 | 18.8 |
Condensate | l/h | 0 | 0 | 0 | 0 |
Chilled water flow rate | l/h | 75 | 105 | 155 | 160 |
Water temperature, inlet | °C | 16 | 16 | 16 | 16 |
Water temperature, outlet | °C | 21.0 | 21.4 | 20.9 | 21.9 |
Water side pressure drop | kPa | 4 | 7.5 | 14.5 | 15 |
Total heating capacity | W | 950 | 1480 | 2050 | 2690 |
Room heating capacity | W | 827 | 1232 | 1673 | 2191 |
Heat recovery efficiency | % | 90 | 87 | 85 | 83 |
Air temperature following heat recovery | °C | 18.7 | 18.0 | 17.6 | 17.1 |
Supply air temperature | °C | 37.5 | 37.4 | 37.7 | 37.4 |
Condensate | l/h | 0.5 | 0.7 | 0.9 | 1.1 |
Hot water flow rate | l/h | 30 | 50 | 80 | 120 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 32 | 34 | 38 | 41 |
Water side pressure drop | kPa | 1.5 | 3 | 6.5 | 13.5 |
Sound power level LWA | dB(A) | 33 | 40 | 44 | 49 |
Sound pressure level with 8 dB system attenuation | dB(A) | 25 | 32 | 36 | 41 |
Active power Pel | W | 29 | 47 | 80 | 137 |
Air-side data Cooling mode:
Air-side data Heating mode:
SCHOOLAIR-B-HE-2/KM/2090×750×420/C3
Under sill units for horizontal mounting on the façade
Please note:
The described under sill ventilation unit variant is equipped with a single room control system arranged in the unit.
The supplied controllers contain the parameters of the standard control for operation according to our control description
School ventilation unit - Under sill installation - Master unit
Under sill ventilation unit TROX X-CUBE/SCHOOLAIR-B-HE with supply and extract air function and switchover to secondary air mode (depending on air quality), cross-counterflow heat recovery that can be used all year round as well as heating function for installation on an external wall below the window sill:
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:
Replacement filter set suitable for the appliance version
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-B | – | HE | – | 4 | – | 1 | / | KR | / | 2090 × 750 × 420 | / | 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 |
Order example: SA-B-HE-4-1-KR/2090×750×420/C3-MA-T/MR/C/Z/A/HV-R-0.40/KV-R-0.40
Type | SA-B | horizontal decentralised sill ventilation unit X-CUBE/SCHOOLAIR-B |
Variant | HE | high heat recovery rate |
Heat exchanger | 4 | 4-pipe |
Heat exchanger construction | 1 | Heat exchanger type 1 |
Construction | KR | with condensate drain and water connection right |
Nominal size [mm] | 2090×750×420 | Width 2090, height 750, depth 420 |
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) |
Installation and commissioning
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Contacto
Estamos aquí para ayudarle
Por favor indique el asunto de su consulta y sus datos de contacto.
Tel.: +34 976 50 02 50 | Fax: +34 976 50 09 04
Contacto
¡Gracias por su mensaje!
Su mensaje se ha recibido con éxito en el buzón del SAT de TROX.
En seguida nos pondremos en contacto con usted.
En caso de que disponga de cuestiones adicionales, puede contactar con nosotros en: Tel.: +34 976 50 02 50 | Fax: +34 976 50 09 04