Application
Special characteristics
Nominal sizes
Functional description
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 F7 filter.
Once the fresh air has passed the fan, it flows through the heat recovery unit; it is possible to bypass the heat exchanger in order to protect it, or 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.
The extract air first passes a G3 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 good, the unit can be operated in secondary mode only.
Width | 397 mm (2-pipe or 4-pipe), 600 mm (2-pipe or 4-pipe, 1800, HE and HV) |
Height | 1800 mm (2-pipe or 4-pipe, 1800 version), 2000 mm (HE version), 2160 mm (2-pipe), 2200 mm (HV version), 2350 mm (4-pipe) |
Depth | 359 mm (2-pipe or 4-pipe, 1800 version) 408 mm (2-pipe or 4-pipe HE and HV versions) |
Fresh air flow rate | Up to 500 m³/h |
Supply air flow rate | Up to 500 m³/h |
Cooling capacity | Up to 1685 W |
Heating capacity | Up to 6020 W |
Max. operating pressure, water side | 6 bar |
Max. operating temperature | 75 °C |
Sound power level | 31 – 50 dB(A) |
Supply voltage | 230 V AC ±10 %, 50/60 Hz |
Weight | From 80 kg |
SCHOOLAIR-V-0 (sizing examples)
Supply air flow rate | m³/h | 150 | 200 | 250 | 320 |
Fresh air flow rate | m³/h | 150 | 200 | 250 | 320 |
Total cooling capacity | W | From 680 | From 900 | From 1130 | From 1440 |
Room cooling capacity | W | From 401 | From 534 | From 668 | From 844 |
Air temperature inside the unit | °C | 32 | 32 | 32 | 32 |
Rel. 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 | 18 | 18 | 18.1 |
Condensation | g/h | 0 | 0 | 0 | 0 |
Chilled water flow rate | l/h | 80 | 130 | 190 | 250 |
Water temperature, inlet | °C | 16 | 16 | 16 | 16 |
Water temperature, outlet | °C | 23.3 | 22 | 21.1 | 21 |
Water side pressure drop | kPa | <3 | <5 | <8 | <12 |
Total heating capacity | W | 2780 | 3700 | 4490 | 5470 |
Room heating capacity | W | 862 | 1136 | 1303 | 1422 |
Air temperature inside the unit | °C | –12 | –12 | –12 | –12 |
Supply air temperature | °C | 37.2 | 37.0 | 35.6 | 33.3 |
Hot water flow rate | l/h | 90 | 150 | 200 | 250 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 32.9 | 38.5 | 40.4 | 40.9 |
Water side pressure drop | kPa | <3 | <5 | <7 | <11 |
Sound power level LWA | dB(A) | 31 | 36 | 41 | 46 |
Sound pressure level with 8 dB system attenuation | dB(A) | 23 | 28 | 33 | 38 |
SCHOOLAIR-V (1800 mm) (sizing examples)
Supply air flow rate | m³/h | 150 | 230 | 280 | 350 |
Fresh air flow rate | m³/h | 150 | 230 | 280 | 350 |
Total cooling capacity | W | 684 | 1060 | 1310 | 1590 |
Room cooling capacity | W | 406 | 630 | 786 | 935 |
Air temperature inside the unit | °C | 32.0 | 32.0 | 32.0 | 32.0 |
Rel. humidity | % | 40.0 | 40.0 | 40.0 | 40.0 |
Water content of the dry air | g/kg | 11.9 | 11.9 | 11.9 | 11.9 |
Supply air temperature | °C | 17.9 | 17.8 | 17.6 | 18.0 |
Condensation | g/h | 0 | 0 | 0 | 0 |
Chilled water flow rate | l/h | 60 | 120 | 180 | 210 |
Water temperature, inlet | °C | 16 | 16 | 16 | 16 |
Water temperature, outlet | °C | 25.8 | 23.6 | 22.3 | 22.5 |
Water side pressure drop | kPa | 1.1 | 3.8 | 8 | 10.4 |
Total heating capacity | W | 2950 | 4230 | 4900 | 5630 |
Room heating capacity | W | 907 | 1122 | 1150 | 1005 |
Air temperature inside the unit | °C | –12.0 | –12.0 | –12.0 | –12.0 |
Supply air temperature | °C | 40.1 | 36.6 | 34.3 | 30.6 |
Hot water flow rate | l/h | 100 | 170 | 200 | 210 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 34.4 | 38.4 | 38.8 | 36.8 |
Water side pressure drop | kPa | 4.8 | 12.3 | 16.5 | 18.1 |
Sound power level LWA | dB(A) | 31 | 38 | 42 | 47 |
Sound pressure level with 8 dB system attenuation | dB(A) | 23 | 30 | 34 | 39 |
SCHOOLAIR-V-HE (sizing examples)
Supply air flow rate | m³/h | 150 | 200 | 240 | 360 |
Total heating capacity (without heat recovery) | W | 2960 | 3820 | 4520 | 6020 |
Room heating capacity | W | 671 | 781 | 890 | 675 |
Air temperature inside the unit | °C | –16 | –16 | –16 | –16 |
Supply air temperature | °C | 35.4 | 33.7 | 33.1 | 27.5 |
Quantity of condensate | g/h | 510 | 690 | 830 | 1180 |
Hot water flow rate | l/h | 75 | 110 | 150 | 200 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 26 | 30 | 34 | 34 |
Water side pressure drop | kPa | 2.9 | 5.7 | 10.0 | 16.7 |
Sound power level LWA | dB(A) | 36 | 40 | 43 | 50 |
Sound pressure level with 8 dB system attenuation | dB(A) | 28 | 32 | 35 | 42 |
SCHOOLAIR-V-HV (sizing examples)
Supply air flow rate | m³/h | 200 | 300 | 400 | 500 |
Total heating capacity (with heat recovery) | W | 1300 | 1960 | 2530 | 3150 |
Room heating capacity | W | 508 | 772 | 962 | 1169 |
Air temperature inside the unit | °C | 10.0 | 10.0 | 10.0 | 10.0 |
Supply air temperature | °C | 28.6 | 28.7 | 28.2 | 28.0 |
Hot water flow rate | l/h | 35 | 60 | 85 | 120 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 27.8 | 31.7 | 34.1 | 37.2 |
Water side pressure drop | kPa | 2 | 5 | 9.5 | 17 |
Supply and extract air unit with heat exchanger and heat recovery unit, secondary air option (based on air quality), for vertical installation on an external wall, e.g. adjacent to a window.
Special characteristics
Materials and surfaces
Construction
Technical data
Sizing data
Fresh air
Supply air
Room cooling capacity
Room heating capacity
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Decentralised ventilation units are technically advanced products of high quality; they offer a wide range of configuration options. For specification details regarding your project please contact your nearest TROX branch or subsidiary.
Installation and commissioning
Nomenclature
LWA [dB(A)]
Sound power level
tPr [°C]
Primary air temperature
tWV [C°]
Water flow temperature – cooling/heating
tR [C°]
Room temperature
tAN [C°]
Secondary air intake temperature
QPr [W]
Thermal output – primary air
Qtot [W]
Thermal output – total
QW [W]
Thermal output – water side, cooling/heating
VPr [l/s/m³/h]
Primary air volume flow rate
VW [l/h]
Water flow rate – cooling/heating
V [l/h]
Volume flow rate
∆tW [K]
Temperature difference – water
∆pW [kPa]
Water side pressure drop
∆pt [Pa]
Total pressure drop, air side
∆tPr = tPr - tR [K]
Difference between primary air temperature and room temperature
∆tRWV = tWV - tR [K]
Difference between water flow temperature and room temperature
∆tWm-Ref [K]
Difference between mean water temperature and reference temperature
Principal dimensions
LN [mm]
Nominal length
Inducing displacement flow
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 such that, 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.
Heat exchanger
The maximum water-side operating pressure for all heat exchangers is 6 bar.
The maximum water flow temperature (heating circuit) for all heat exchangers is 75 °C; if flexible hoses are used, the water flow temperature should not exceed 55 °C. Units for other pressures and temperatures are available on request.
The water flow temperature (cooling circuit) should be at least 16 °C such that it does not permanently fall below the dew point. For units with a condensate drip tray the water flow temperature may be reduced to 15 °C.
Heat exchanger as 2-pipe system
Air-water systems with a 2-pipe heat exchanger may be used for either heating or cooling. In changeover mode it is possible to use all units within a water circuit exclusively for cooling in summer and exclusively for heating in winter.
Heat exchanger as 4-pipe system
Air-water systems with a 4-pipe heat exchanger may be used for both heating and cooling. Depending on the season, i.e. especially in spring and autumn, it may be possible that an office has to be heated in the morning and cooled in the afternoon.
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We are here for you
Please specify your message and type of request.
Tel.: +43 1 250 43-0 | Fax: +43 1 250 43 34
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.: +43 1 250 43-0| Fax: +43 1 250 43 34