Rotary heat recovery unit
Rotary heat recovery unit
Tested to VDI 6022
Electric heating coil
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 (exhaust air and outdoor air)
3 Outdoor air filter ISO ePM1, with differential pressure monitoring
4 Sound attenuator
5 Fan (supply air and extract air)
6 Rotary heat recovery unit
7 Electric heating coil
8 Supply air temperature sensor
9 CO2 sensor (optional)
10 Extract air filter ISO coarse
Functional description
Decentralised supply and extract air units ventilate the room and cover the heating load in accordance with the technical data. An EC centrifugal fan draws in the outdoor air, which 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 under energy‑efficient operating conditions. Before the supply air flows draught-free along the ceiling via the supply air grille (Coanda effect), it can be heated in the electric heating coil if required.
The extract air first flows through the extract air filter, before it is discharged to the outside as exhaust air, by passing the heat recovery unit, the extract air fan and the motorised shutoff damper. If the indoor air quality is adequate, the FSL-CONTROL III control system closes the outdoor air dampers and switches to secondary air operation, which is more energy efficient. The control system compares the room air quality setpoints to the actual values 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 function is ensured by a capacitor in each actuator.
The supply air flows into the room at medium speed just below the ceiling. Due to the Coanda effect, the airflow is deflected upwards and remains attached to the underside of the ceiling.
This enables very large throw distances, which means that even large rooms can be ventilated effectively. When the supply air reaches the wall opposite the outlet, a room air vortex is formed.
The airflow reaching the occupied zone has a very low velocity and rises on heat sources, for example on people and devices. A buoyant airflow is formed as a result of natural convection. As a result, the air is exchanged primarily in these areas. Directly below the ceiling, the rising stale air is drawn into the device and discharged outside.
Width | 2228 mm, 2420 mm, 2770 mm, 2765 mm |
Height | 401 mm, 433 mm |
Depth | 854 mm, 923 mm |
Volume flow | 200, 300, 400 m³/h (Boost 800 m³/h) |
Nominal volume flow | 400 m³/h |
Sound pressure level at nominal volume flow and 8 dB | 35 dB(A) |
Room attenuation | |
Sound power level | 33 – 51 dB(A) |
Heat recovery efficiency | 75% |
Supply voltage | 230 V AC ±10 %, 50/60 Hz |
Connected load (depending on the electric heating coil 600/900/1200/1500 W) | 1240/1540/1840/2140 VA |
Weight unit/frame | 225 kg/65 kg |
| SA-D | – | HV | – | T | – | EH | – | 15 | – | LB | – | B | / | 2770 x 401 x 854 | / | 0 | / | C3 | – | MA | – | T | / | MR | / | C | / | Z | / | A |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
1 Type
SA-D Ventilation unit for ceiling installation X-CUBE/ SCHOOLAIR-D
2 Variant
HV high volume flow and rotary heat recovery unit
3 Installation situation
0 Installation integrated in suspended ceiling
F freely suspended installation
T partially integrated in suspended ceiling
Z Installation in a pre-installed frame1
I Installation situation to be decided2
4 Heat exchanger
EH with electric heating coil
5 Heat exchanger construction
6 600 W
9 900 W
12 1200 W
15 1500 W
6 Construction
BB Outdoor air connection to the rear, exhaust air connection to the rear
LB Outdoor air connection to the left, exhaust air connection to the rear (not with installation situation F or connection W)
BR Outdoor air connection to the rear, exhaust air connection to the right (not with installation situation F or connection W)
LR Outdoor air connection to the left, exhaust air connection to the right (not with installation situation F or connection W)
7 Connection
0 without connection (only with installation situation I)
W Wall connection sealing kit for outdoor air and exhaust air (not with installation situation I)
B Flanged collar for outdoor air and exhaust air (not with installation situation I)
Q Duct connection for outdoor air and exhaust air (not with installation situation I)
8 Nominal size [mm]
Width x height x depth
2228 x 401 x 854 (only with installation situation 0)
2420 x 401 x 854 (only with installation situation F)
2770 x 401 x 854 (only with installation situation T)
2765 x 433 x 923 (only with installation situation Z)
2220 x 401 x 854 (only with installation situation I)
9 Exposed surface
0 powder-coated, RAL 9010 (pure white), GU 30
P1 powder-coated, RAL 7012 (basalt grey), GU 30, or specify alternative RAL CLASSIC colour, GU 30
10 Control system
OR without control system
C3 with FSL-CONTROL III
11 Control function
MA Master
SL Slave
12 Real-time clock
Only with control function MA
No entry: without real time clock
T with real time clock
13 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)
14 Air quality sensor
Only with control function MA
No entry: without air quality sensor
C with CO2 sensor
V with VOC sensor
15 Supply air temperature sensor
Z with supply air temperature sensor
16 Outdoor air temperature sensor
Only with control function MA
No entry: without outdoor air temperature sensor
A with outdoor air temperature sensor
¹ Accessory frame to be ordered separately
² Basic unit is supplied without accessories. Required accessories must be ordered separately.
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Contact
We are here for you
Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
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.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265