SCHOOLAIR-D-HV
Rotary heat exchanger for heat recovery
Tested to VDI 6022
Filter change
Water connections
Control system connection by others
Ready-to-operate decentralised ventilation unit that provides good comfort levels and is used for the ventilation of internal spaces such as classrooms or conference rooms and day nurseries
Optional equipment and accessories
Functional description
Decentralised supply and extract air units ventilate the room and cover the 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 rotary heat recovery unit, which can be switched off in energy efficient operating situations. If necessary, the air is heated or cooled by the heat exchanger before it is draught-freely discharged to the room with momentum from the supply air grille near the ceiling (this is optional for change-over 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. 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 a capacitor in each actuator.
The supply air is discharged near the ceiling with a medium velocity. The Coanda effect causes the beam to be deflected upwards. Rather than flowing immediately downwards, the air moves along the ceiling (Coanda effect) and reaches every corner; this ensures complete ventilation even of large rooms. Once the air reaches the opposite wall, it moves downwards and eventually through the entire space. The airflow reaching the occupied zone has a very low velocity and rises on heat sources, for example on people and devices. This is called natural convection. As a result, the air is exchanged primarily in these areas. The stale air is extracted under the ceiling and led to the outside.
SEH Single room exhaust air
SET Single room extract air
SRO Single room outdoor air
SRS Single room supply air
SEC secondary air (optional)
1 Outdoor air temperature sensor (optional)
2 Shut-off damper with actuator (outdoor air and exhaust air)
3 Outdoor air filter ISO ePM1 with differential pressure monitoring
4 Sound attenuators
5 Fans (supply air and extract air)
6 Rotary heat exchanger for heat recovery
7 Heating coil
8 Cooling coil (only change-over system)
9 Supply air temperature sensor
10 CO2 sensor (optional)
11 Extract air filter ISO coarse
| Width | 3363 mm, 3555 mm, 3905 mm, 3900 mm |
| Height | 410 mm, 440 mm |
| Depth | 1030 mm, 1099 mm |
| Volume flow rate | 300, 500, 800 m³/h (boost 1100 m³/h) |
| Nominal volume flow rate | 800 m³/h |
Sound pressure level at nominal volume flow rate and 8 dB | 35 dB(A) |
| Sound power level | 22 – 53 dB(A) |
| Degree of heat recovery efficiency | 75 % |
| maximum operating pressure, water side | 6 bar |
| Max. operating temperature | 75 °C |
| Supply voltage | 230 V AC ±10 %, 50/60 Hz |
| Power rating | 640 VA |
| Weight | 340 kg |
| SA-D | – | HV | – | T | – | 4 | – | 1 | – | LB | – | B | / | 3905 × 410 × 1030 | / | 0 | / | C3 | – | MA | – | T | / | MR | / | C | / | Z | / | A | / | HV | – | R | – | 0.4 | / | KV | – | R | – | 0.63 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |||||||||||||||||||||
| 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-HV-T-4-1-LB-B/3905×410×1030/0/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 | HV | High volume flow rate and rotary heat recovery unit |
| Installation situation | T | partially integrated in suspended ceiling |
| Heat exchanger | 4 | 4-pipe |
| Heat exchanger | 1 | Type 1 |
| Construction | LB | (Outdoor air) connection to the left, (exhaust air) connection to the rear |
| Connection | B | Flanged collar (Ø 315 mm) for outdoor air and exhaust air |
| Nominal size [mm] | 3905×410×1030 | Width 3905, height 410, depth 1030 |
| Exposed surface | 0 | powder-coated, RAL 9010 (pure white) |
| 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 CO2 sensor |
| 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) |
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Contact
Nous sommes à votre disposition
Veuillez préciser votre message et le type de demande
Tel.: +32 (0) 2/522 07 80
Contact
Merci pour votre message !
Votre message a été envoyé et sera traité dans les plus brefs délais.
Notre département de traitement des demandes prendra contact avec vous dès que possible.
Pour les questions d'ordre général concernant les produits ou services, vous pouvez aussi nous appeler :
Tel.: +32 (0) 2/522 07 80
