FSL-B-ZAB/SEK
Cross flow heat recovery unit
Energy label
Tested to VDI 6022
Inspection access panel for filter and heat recovery unit
Water connection
Ready-to-operate decentralised ventilation unit that provides good comfort levels, used for the ventilation of internal spaces
Optional equipment and accessories
SEH Single room exhaust air
SRO Single room outdoor air
SRS Single room supply air
SET Single room extract air
SEC Secondary air individual room
1 Outdoor air temperature sensor (optional)
2 Volume flow limiter
3 Non-return damper
4 Shut-off damper with actuator (outdoor air)
5 Fine dust filter ePM1
6 EC fan (supply air and extract air)
7 Recuperator
8 Sound attenuator
9 Heating coil
10 Cooling coil
11 Supply air temperature sensor (optional)
12 Bypass damper with actuator (modulating)
13 CO2 sensor (optional)
14 Extract air filter ISO coarse
15 Shut-off damper with actuator (exhaust air)
Decentralised supply and extract air units ensure room ventilation. They dissipate the cooling loads and heat loads in accordance with the technical data. An EC centrifugal fan takes in the outdoor air and this then flows through the maintenancefree and mechanical self-powered type VFL volume flow limiter, which is pre-set at the factory to the maximum volume flow rate. This ensures maximum limitation of the outdoor air flow rate to a pre-set value for all façade positive pressure situations without an electrical external power supply. The air then flows through the motorised shut-off damper, the self-powered non-return damper and the outdoor air filter. The self-powered non-return dampers in the outdoor air intake and exhaust air outlet prevent the return flow of the conditioned air or undesired airflow directions. Once the outdoor 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 regar 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 through the outdoor air filter, then flows through the heat recovery unit, the extract air fan, the non-return damper and the motorised shut-off damper before it is discharged to the outside as exhaust air. If the room 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. 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 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 so 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 outdoor air to rise and create comfortable conditions in the occupied zone.
| Width | 1085 mm |
| Height | 630 mm |
| Depth | 320 mm |
| Outdoor air flow rate | 80 – 150 m³/h |
| Nominal volume flow rate | 120 m³/h |
| Sound power level | 30 – 43 dB(A) |
Heat recovery efficiency | 60 % |
Max. operating pressure, water side | 6 bar |
Max. operating temperature | 75 °C |
| Supply voltage | 230 V AC ±10 %, 50/60 Hz |
| Power rating | 234 VA |
Weight | 65 kg |
| RA-B-ZAB/SEK | – | 4 | – | HE | – | KR | / | 1124 × 763 × 320 | / | C3 | / | MA | – | T | / | MR | / | C | / | Z | / | A | / | HV | – | R | – | 0.4 | / | KV | – | R | – | 0.4 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||||||||||||
KL with condensate drain on the left (only with variant HE)
5 Dimensions [mm]1085 × 630 × 320 (only with standard variant)
1124 × 763 × 320 (only with variant HE and version KR)
1174 × 763 × 320 (only with variant HE and version KL)
6 Control systemOrder example: FSL-B-ZAB/SEK-4-KM/1085x630x320/C3-MA-T/C/Z/A/HV-R-0.40/KV-R-0.25
| FSL-B-ZAB/SEK | Horizontal under sill unit |
| 4 | With 4-pipe heat exchanger |
| KM | With condensate drain |
| C3 | With FSL-CONTROL III |
| MA | Master |
| T | With real time clock |
| C | With CO2 sensor |
| Z | With supply air temperature sensor |
| A | With outdoor air temperature sensor |
| HV-R-0.40 | With straight-way valve (heating circuit) KVS 0.40 and lockshield |
| KV-R-0.25 | With straight-way valve (cooling circuit) KVS 0.25 and lockshield |
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Suntem aici pentru dumneavoastră
Vă rugăm să exprimaţi mesajul dumneavoastră şi tipul de cerere
Tel.: +40 31 82 43 041 | Fax: +40 31 82 43 040
Contact
Vă mulţumim pentru mesaj!
Mesajul dumneavoastră este trimis şi va fi procesat în curând.
Departamentul nostru de Cereri Service o să vă contacteze în cel mai scurt timp Pentru întrebări generale privind produsele sau serviciile puteţi suna şi la:
Tel.: +40 31 82 43 041 | Fax: +40 31 82 43 040
