Energy label
FSL-B-ZAB+SEK-4-KM/1150x670x320/C3
Under sill units for horizontal assembly on the façade
Please note:
The specification text describes an under sill ventilation unit variant with a single room control system arranged in the unit for autonomous room operation.
The supplied controllers contain the standard control parameters for operation according to our control system description.
FSL-B-ZAB+SEK supply and extract air unit with addition of secondary air - MASTER UNIT
Under sill ventilation unit TROX FSL-B-ZAB+SEK with supply and extract air function and secondary air operation, heat recovery as well as heating and cooling function for installation on an external wall below the window sill:
The front of the device must be completely accessible after disassembly of the outer casing
Units, dimensions and weight:
SEH Single room exhaust air
SET Single room extract air
SRO Single room outdoor air
SRS Single room supply air
SEC Secondary air
1 Casing
2 Recuperative heat exchanger inspection access panel
3 Inspection access panel for extract air filter ISO coarse 55 %
4 Inspection access panel for outdoor air filter ISO ePM1 65 %
5 Valves including valve actuators
6 Lockshields
7 Condensate drip tray including drain
8 Supply air temperature sensor (optional)
9 Heat exchanger
10 Controls, inspection access panel
11 Connection options for control system by others
12 Levelling feet
13 Fixing brackets
14 Outdoor air temperature sensor (optional)
15 Outdoor air opening including seal
Decentralised supply and extract air units with secondary air addition for 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 maintenance-free 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 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. To increase the heating and cooling capacity, the supply air is mixed with the indoor air by the secondary air fan, thus increasing the supply air volume flow rate. 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. Here, the control system compares the setpoint values of the indoor air quality with the actual values measured at the CO2sensor 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 | 1150 mm |
Height | 670 mm |
Depth | 320 mm |
Outdoor air flow rate | 60 – 150 m³/h |
Supply air flow rate | 140 – 300 m³/h |
Supply air flow rate | 200 m³/h |
Sound power level | 33 – 50 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 |
Supply voltage | 255 VA |
Weight | 75 kg |
Total supply air flow rate | m³/h | 140 | 170 | 200 | 240 | 300 |
Outdoor air flow rate | m³/h | 60 | 90 | 120 | 120 | 150 |
Secondary air volume flow rate | m³/h | 80 | 80 | 80 | 120 | 150 |
Total cooling capacity | W | 490 | 630 | 760 | 850 | 1000 |
Room cooling capacity | W | 374 | 454 | 534 | 625 | 711 |
Air temperature after heat recovery | °C | 28.6 | 29.2 | 29.6 | 29.0 | 29.0 |
Relative humidity | % | 45 | 44 | 44 | 45 | 45 |
Water content of the dry air | g/kg | 11.1 | 11.2 | 11.3 | 11.2 | 11.2 |
Supply air temperature | °C | 18.0 | 18.0 | 18.0 | 18.2 | 18.9 |
Condensate | g/h | 0 | 0 | 0 | 0 | |
Chilled water flow rate | l/h | 115 | 140 | 180 | 200 | 200 |
Water temperature, inlet | °C | 16 | 16 | 16 | 16 | 16 |
Water temperature, outlet | °C | 19.7 | 19.9 | 19.7 | 19.7 | 20.3 |
Water side pressure drop | kPa | 1.5 | 2.0 | 3.0 | 4.0 | 4.0 |
Total heating capacity | W | 1550 | 2050 | 2420 | 2580 | 2990 |
Room heating capacity | W | 706 | 784 | 741 | 922 | 922 |
Air temperature after heat recovery | °C | 5.1 | 1.4 | -1.2 | 2.5 | 2.5 |
Supply air temperature | °C | 36.1 | 34.8 | 32.1 | 32.5 | 30.2 |
Hot water flow rate | l/h | 90 | 140 | 160 | 180 | 200 |
Water temperature, inlet | °C | 60 | 60 | 60 | 60 | 60 |
Water temperature, outlet | °C | 45.0 | 47.2 | 46.8 | 47.5 | 47.0 |
Water side pressure drop | kPa | 1.0 | 2.5 | 3.0 | 3.5 | 4.0 |
Sound power level LWA | dB(A) | 33 | 35 | 38 | 44 | 50 |
Sound pressure level with 8 dB system attenuation | dB(A) | 25 | 27 | 30 | 36 | 42 |
Active power Pel | W | 19 | 20 | 24 | 28 | 38 |
FSL-B-ZAB+SEK-4-KM/1150x670x320/C3
Under sill units for horizontal assembly on the façade
Please note:
The specification text describes an under sill ventilation unit variant with a single room control system arranged in the unit for autonomous room operation.
The supplied controllers contain the standard control parameters for operation according to our control system description.
FSL-B-ZAB+SEK supply and extract air unit with addition of secondary air - MASTER UNIT
Under sill ventilation unit TROX FSL-B-ZAB+SEK with supply and extract air function and secondary air operation, heat recovery as well as heating and cooling function for installation on an external wall below the window sill:
The front of the device must be completely accessible after disassembly of the outer casing
Units, dimensions and weight:
FSL-CONTROL III controller
Including control system FSL-CONTROL III, as described below:
FSL-CONTROL III is described as stand-alone single room control equipment with a simple timer. Optional expansions, such as connection to the on-site central BMS via Modbus TCP / Modbus RTU, BACnet MS/TP or BACnet IP, humidity sensors, return flow temperature sensors, electromotive valve actuators or pressure-independent control valves are included in the product range, but must be replaced with the standard components in the following description. A room temperature signal is also required. Various room control panels and sensors are available for this purpose. The corresponding optional equipment text modules can be found in the appendix of the following standard equipment for room-autonomous operation. We recommend commissioning by our technical service. 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
CO22sensor (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-…/KV-R-…):
Optional control accessories
Optional equipment to increase the comfort of the FSL-CONTROL III:
TROX control panels for FSL-CONTROL III:
At least one room temperature signal is required per room.
There are different variants of TROX control panels available, optionally with or without step switching.
Additionally we offer a room temperature sensor RTF without control elements.
Alternative control panels provided by the customer must be connected via bus communication.
Control panels with selector switch for surface mounting
Control panel with selector switch, for surface mounting, type Honeywell
Supplied loose as accessory, with room temperature sensor, setpoint adjuster (blue or white), override button, LED and 3-step switch as well as off and automatic, assembly on 60 mm flush box or directly on the wall, NTC thermistor as sensor element, resistance 20 kΩ at 25 °C, dimensions (B x H x T): 99 x 104 x 30 mm, operating temperature: 6 to 40 °C
Control panel with selector switch, for surface mounting, type Thermokon
Supplied loose as an accessory, with room temperature sensor, setpoint adjuster (blue or white), override button, LED and 3-step switch as well as off and automatic, casing made from pure white PVC0 (RAL 9010) assembly on 60 mm flush box or directly on the wall, NTC thermistor as sensor element, resistance 20 kΩ at 25 °C, dimensions (B x H x T): 84.5 x 84.5 x 25 mm, operating temperature: -35 to 70 °C
Control panels without selector switch for surface mounting
Control panel without selector switch, for surface mounting, type Schneider
Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 10 kΩ, protection level: IP 20, wall mounting or on 70 mm flush-mounted box, dimensions (B x H x T) 84 x 116 x 24 mm, colour light grey/white
Control panel without selector switch, for surface mounting, type Thermokon
Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20, dimensions (B x H x T) 84.5 x 84.5 x 25 mm
Room temperature sensor for surface mounting
Room temperature sensor TROX RTF, surface mounting
Supplied loose as additional part, room sensor without control elements, measuring range: -35...+70°C, sensor NTC 10 kΩ, terminal screw terminal, d=1.5 mm, protection level IP 20, assembly wall mounted or on 70 mm flush-mounted box, dimensions (B x H x T) 85 x 85 x 30 mm, casing ABS in RAL 9010
Control panels without selector switch for surface mounting
For manual operation of the ventilation units with a high-quality look and the matching design frame from a wide range of switch ranges, the unit is suitable for particularly design-oriented facilities.
Control panel without selector switch, for flush mounting, type Thermokon, switch from Berker S.1 range, polar white
Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20
Control panel without selector switch, for flush mounting, type Thermokon, switch from Berker Q.3 range, white
Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20
Control panel without selector switch, for flush mounting, type Thermokon, switch from Busch Jäger future linear range, white
Supplied loose as additional part, with mode display, push button and setpoint adjustment, sensor NTC 20 kΩ, protection level: IP 20
Further switch programmes on request!
Control panels without selector switch and without setpoint value adjuster for flush mounting
Control panel without selector switch and without setpoint value adjuster, for flush mounting, type Thermokon, switch from Gira E2 range
Supplied loose as additional part, with mode display and button, sensor NTC 20 kΩ, protection level: IP 20
Further switch programmes on request!
Electromotive valve actuator:
As an alternative to the standard installed thermoelectric actuator:
Pressure-independent control valve:
As an alternative to the standard installed straight-way small valve:
Interface for connection to central building management system (BMS) provided by others:
Modbus TCP interface including web server (order code .../MT/...)
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using Modbus TCP protocol. Additionally incl. web server for simplified configuration, commissioning and remote monitoring of the device. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.
BACnet IP interface including web server (order code .../BI/...):
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using BACnet IP protocol. Additionally incl. web server for simplified configuration, commissioning and remote monitoring of the device. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.
Modbus RTU (order code .../MR/...):
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using Modbus RTU protocol. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.
BACnet MS/TP (order code .../BM/...):
To increase comfort, we recommend integration into a central building management system provided by others. FSL-CONTROL III offers the possibility to be connected to a central BMS provided by others using BACnet MS/TP. The central BMS is not included in the supply package from TROX, only the interfaces listed above are available here.
Commissioning of the decentralised ventilation units
Commissioning / parameter setting of decentralised ventilation units without connection to the central building management system
Commissioning / parameter setting of decentralised ventilation units with connection to the central building management system
Instruction in operation and maintenance
FSL-B-ZAB+SEK | – | 4 | – | KM | / | 1150 × 670 × 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 |
MR With Modbus RTU
BI With BACnet IP
BM With BACnet MS/TP
9 Air quality sensor, only master
No entry required: None
C With CO2sensor
V With VOC sensor
10 Supply air temperature sensor
Z With
11 outdoor air temperature sensor, only master
No entry required: None
A With
12 Heating valve
HV With
13 Lockshield – heating circuit
R With
14 kVS value heating valve
0.25 Straight-way valve
0.40 Straight-way valve
0.63 Straight-way valve
1.00 Straight-way valve
F0.50 Pressure-independent control valve
15 Cooling valve
Only 4-pipe systems
KV With
16 Lockshield – cooling circuit
R With
17 kVS valve – cooling valve
0.25 Straight-way valve
0.40 Straight-way valve
0.63 Straight-way valve
1.00 Straight-way valve
F0.50 Pressure-independent control valve
FSL-B-ZAB+SEK | Horizontal under sill unit with 3 fans |
4 | With 4-pipe heat exchanger |
KM | With condensate drain |
C3 | With FSL-CONTROL III |
MA | Master construction |
T | With real time clock |
C | With CO2sensor |
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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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