FSL-Control III

100% outdoor air via control panel, via XTAIRMINAL or via the MCE/BACS

Digital control panel including temperature sensor and CO2 traffic light

Control panel for flush mounting, switch e.g. Busch-Jaeger future linear

Operation and parameter setting via integral web server

Pressure-independent control valve

FSL-CONTROL III

Autonomous single room control, optionally with communication to the management and control equipment/building automation and control systems (MCE/BACS)

Easy-to-use single-room control as a plug-and-play solution for decentralised ventilation units: Enables demand-controlled ventilation and water-side control of the heating and/or cooling circuit or, alternatively, the electric heating coil.
■ Variable heat recovery all year round – for maximum outdoor air volume, even in winter
■ Demand-based CO2 or VOC led outdoor air supply and also temperature control for each room
■ 100% outdoor air at the touch of a button
■ Low-noise operation at the touch of a button
■ Boost ventilation mode at the push of a button
■ Individual indoor air quality adjustment
■ Release of secondary systems, e.g. heated and/or chilled ceilings
■ Room temperature control or isothermal outdoor air supply
■ Electric reheating coil for selected variants
■ Comfortable device configuration via web server – no operating software required
■ Parallel operation with fume cupboards
■ Optional connection to MCE/BACS or X-TAIRMINAL

General information

Application

Single-room control system for TROX decentralised ventilation units
Ready to operate, pre-wired single-room control system, either built into the unit or in a separate control box
Factory-wired and individually tested before shipping
Controls all functions of a decentralised ventilation unit
Customised control strategies
Operation possible even without external peripherals: Set up – Connect – Outdoor air
Either 100 % outdoor air or energy-saving operation thanks to air quality-controlled secondary air changeover
Cost-effective integration into the management and control equipment
Preconfigured web server for further information and individual customisation
Use many different decentralised units with the same controller and the same data points

Special characteristics

Simple integration into the management and control equipment/building automation and control systems via RS485 or Ethernet interface
Comfortable device configuration via web server – no operating software required
Master-slave combination possible (up to 10 slaves per master)
Enables automatic, energy-efficient switching between outdoor air mode and secondary air mode (based on air quality, device-specific)
Permanent outdoor air operation can be activated via control panel, X-TAIRMINAL or MCE/BACS
Variable bypass for heat recovery control
Heat recovery all year round
Economical integration into the MCE/BACS – reduced data points improve overview and usability
Read out slave data via the master's MCE/BACS interface – significantly fewer number of bus participants
Cross-room system integration: All devices in the room operate uniformly with only one connection to the MCE/ BACS
13 digital switch contacts for the connection of peripheral systems (provided by the client), for simple higher-level control functions and for monitoring
Permanent internal data logging - retrospective monitoring, error analysis and operational optimisation
Software update and parameter adjustment for all devices from one central point via an IP connection
Remote diagnostics via IP connection

Variants

Optional equipment and accessories

Various sensors, e.g. for temperature, humidity or indoor air quality
Real Time Clock (RTC) allows for operating types based on time (7 different profiles, 10 switching points per profile)
Bus communication via

Modbus RTU
Modbus TCP
BACnet MS/TP
BACnet IP

Digital control panel with project-specific software
Analogue control panels, can also be integrated into various switch programmes
Electric valve actuators
Pressure-independent balancing valves and control valves
Electric reheat coil (only X-CUBE/SCHOOLAIR-V-HV-EH, X-CUBE/SCHOOLAIR-B-HV-EH, X-CUBE/SCHOOLAIR-DHV- EH, X-CUBE/SCHOOLAIR-S-HV-EH)
Visualisation via TROX X-TAIRMINAL

Standards and guidelines

EN 547-2:1996+A1
EN 547-3:1996+A1
EN 1005-3:2002+A1
EN 1005-2:2003+A1
EN 1005-1:2001+A1
EN ISO 13732-1:2008
EN ISO 12100:2010-11
EN ISO 14118:2018
EN ISO 13854:2019
EN ISO 13857:2019
EN 60204-1:2018

Construction

Depending on the unit variant the control components are either fitted inside the unit or in a separate box

Material and surfaces

Casing made of galvanised steel, powder-coated RAL 9005, RAL 9010 (unless already integrated in the casing of the decentralised ventilation unit)

Información técnica

Schematic illustration

Operation and parameter setting by means of integral web server
1 Outdoor air temperature
2 Shut-off damper outdoor air
3 Operating hours filter outdoor air
4 Speed/step fan supply air
5 Control signal bypass damper/circulating heat recoverer
6 Control signal heating valve
7 Control signal cooling valve
8 Supply air temperatur
9 Room temperature
10 Extract air temperature
11 Extract air humidity (optional)
12 Air quality
13 Operating hours filter extract air
14 Fan speed/step extract air
15 Shut-off damper outdoor air

Each decentralised ventilation unit has its own controller. The controller controls all functions that are necessary for operation, e.g. providing the control signal for fans and actuators. With dedicated software and hardware the controller can be configured as a master controller; one master controller is required for each room. Additional inputs and interfaces allow for the connection of components that are required for room control. The RTC interface on the master PCB allows for adding a timer; the Modbus-RTU, Modbus/TCP, BACnet/MS/TP or BACnet/IP interface allows for establishing a connection to BACS (by others). Also, TROX X-TAIRMINAL is a powerful visualisation tool.

Operating temperature	-20 – 60 °C
Relative humidity	5 – 95%, no condensation
Air pressure	> 700 hPa
Storage temperature	-30 to 70 °C
Power consumption (depending on equipment)	14 W max.

This specification text describes the general characteristics of the product. Texts for variants can be generated with our Easy Product Finder design program.

Specification text

FSL-CONTROL III is described as a stand-alone single-room control system with a simple time programme. Optional expansions, such as connection to the on-site MCE/BACS via

Modbus TCP//RTU or BACnet IP//MS/TP, humidity sensors, return flow temperature sensors, electromotive valve actuators or pressure-independent control valves are included in the delivery

programme, but must be replaced with the standard components in the following description. A room temperature signal is also required. Various control panels and sensors are available for

this purpose. Alternatively, the supply air can be brought in isothermally. The corresponding optional equipment text modules can be found in the appendix to the following standard

equipment for stand-alone operation. We recommend commissioning by TROX. You will find related text modules below.

TROX control module FSL-CONTROL III (order code ... -C3- MA ...):

Single room controller to be mounted on a DIN mounting rail in the device or in a separate control casing

42 digital or analogue inputs and outputs
Integral MicroSD card with up to 8 GB storage space (flash storage medium). The trend data is stored on the SD card and can be retrieved via FTP using the RJ45 service socket
Factory installed software package for master units, specially developed for decentralised ventilation units. The software enables simple master-slave communication via Modbus RTU
Up to 10 slave devices can be connected to one master device
3 types of operation (Off, Automatic and Manual), 3 operating modes (Occupied, Unoccupied and Standby) and 4 operating mode overrides (Boost, Class, Night Purge and Forced Fan Conctrol)
Basic distinction between room temperature control by controlling heating and cooling valves or continuous bypass damper, or supply air temperature control for isothermal ventilation operation
CO2-guided air quality control
Heat recovery all year round
Filter monitoring
Configurable digital inputs, e.g. for the connection of PIR sensors, window contacts (all provided by the client) or holiday mode setting, etc.
Alarm messages: Type A (shutdowns) and Type B (notifications)

Real Time Clock (RTC) (order code ...-T/...):

Part of the master software package
Includes a simple time programme

7 days with 10 switching points each
Automatic switching between summer and winter time
Timed activation of night purge

CO2sensor (order code…/C/…):

Sensor in the extract air intake of the master unit, for recording the indoor air quality and for controlling the outdoor air flow rate accordingly
Measurement via an NDIR sensor that works on an infrared basis and compensates for any contamination through its 2-beam measuring principle
Measuring range 0 – 2000 ppm

Supply air temperature sensor (order code .../Z/...):

Supply air temperature sensor with NTC thermistor, 10 kΩ at 25 °C, measuring range 0 – 50 °C
Very short response time due to perforated measuring tip

Outdoor air temperature sensor (order code .../A/...)

Outdoor air temperature sensor with NTC thermistor, 10 kΩ at 25 °C, measuring range -30 – 50 °C

Water-side components (order code .../HV-R- .../KV-R- …)

Valve actuators:

1 ×/2 × thermoelectric actuator for opening and closing valves, with position indicator, including pluggable connecting cable, supply voltage 24 V DC, control voltage 0 – 10 V DC, power consumption 1 W, degree of protection: IP 54

Straight-way valves:

1 ×/2 × small straight-way valve, 1/2" as standard, handtight pre-assembled, PN 16, DN10, kVS 0.4 (alternatively: 0.25, 0.63 or 1.0 m³/h – please specify the required kVS value), threaded connection G 1/2B, media temperature 1 - 110 °C

Lockshields:

1 ×/2 × lockshield on both sides, 1/2", hand-tight preassembled, nominal width DN 15; 1/2", straight-through valve with external thread on both sides, flat sealing, for control and shut-off, operating temperature 120 °C max.

TROX control panels for FSL-CONTROL III

At least one room temperature signal is required per room. There are several variants of TROX control panels available, optionally with or without selector switch. Additionally, we offer a room temperature sensor RTF without control elements. Alternative on-site control panels must be connected via bus communication.

Digital control panel for surface mounting

For operation and adjustment of the ventilation units. Supplied as a loose accessory. Project-specific software including setpoint adjuster, various status displays, selector switch, CO2 traffic light. Touch-sensitive colour display 3.5" 320 × 240 pixels. Sensor: NTC 10 kΩ; IP protection: IP 20; installation: surface mounting or on standard flush-mounted box
Type Schneider TM172DCLWT: dimensions (H × B × T): 120 × 86 × 25 mm, weight: 340 g, colour: white. Other design frames optionally available. Power supply: 24 V DC, power consumption: 3.2 VA/1.3 W. Connection to master device via Modbus Serial Line

Control panel with selector switch for surface mounting

For manual control of ventilation units
Supplied as a loose accessory, push button and setpoint adjuster, status LED, 5-step switch (off, 1, 2, 3, automatic); sensor: NTC 20 kΩ, protection level IP 20; for surface mounting or on standard flush-mounted box
Type Thermokon: Dimensions (H × B × T): 84.5 × 84.5 × 25 mm, colour: pure white

Control panel without selector switch for surface mounting

For manual control of ventilation units
Supplied as a loose accessory, push button, setpoint adjuster, status LED, protection level: IP 20
Thermokon: Sensor: NTC 20 kΩ, dimensions (B × H × T) 84.5 × 84.5 × 25 mm

Room temperature sensor TROX RTF3 for surface mounting

Supplied as a loose accessory
Room sensor without control elements
Sensor: NTC 10 kΩ
Protection level: IP 20
Installation: Surface mounting or on a 70 mm flushmounted box
Dimensions (B × H × T): 85 × 85 × 30 mm
Colour: RAL 9010

Control panel without selector switch for flush mounting

For manual operation of ventilation units with a high-quality appearance and matching designer frames from various switch programmes, the device is particularly suitable for design-oriented facilities.
Supplied as a loose accessory
Mode display with LED, push button, setpoint adjuster; sensor: NTC 20 kΩ
Protection level: IP 20
Installation in standard flush-mounted box
Available switch programmes: Berker S.1, Berker Q.3, Busch Jaeger future linear, Gira E2 (other switch programmes upon request)

Control panel without selector switch and without setpoint adjuster for flush mounting

For manual operation of ventilation units with a high-quality appearance and matching designer frames from various switch programmes, the device is particularly suitable for design-oriented facilities.
Supplied as a loose accessory
Mode display with LED, push button, setpoint adjuster; sensor: NTC 20 kΩ, protection level: IP 20
Installation in standard flush-mounted box
Available switch programme: Gira E2 (other switch programmes upon request)

Optional equipment to increase the comfort of the FSLCONTROL III:

Electromotive valve actuator
As an alternative to the standard thermoelectric actuator

1 ×/2 × electromotive actuator for valve opening and closure
Supply voltage 24 V AC/DC
Power consumption max. 2.5 VA
Control signal 0 – 10 V DC
Permissible media temperature 1 – 110 °C

Pressure-independent control valve
As an alternative to the standard small straight-way valve

1 ×/2 × pressure-independent control valve
Hand-tight pre-assembled
Modulating open/close control combined with an externally adjustable dynamic volume flow controller, with full valve authority
Nominal width DN 10, 1/2"
Valve body straight-through with external thread on both sides, flat sealing
Media temperature 0 – 120 °C

Interface for connection to management and control equipment (MCE), provided by the client
To increase comfort, we recommend integration into an on-site MCE (not included in the scope of delivery).Available interfaces:

Modbus TCP (Ethernet) including web server (order code .../MT/...)
Modbus RTU (RS 485) including web server (order code .../MR/...)
BACnet IP (Ethernet) including web server (order code .../ BI/...)
BACnet MS/TP (RS 485) including web server (order code .../BM/...)

Commissioning

We recommend commissioning by TROX.

This product can only be ordered in combination with a decentralised ventilation unit from the X-CUBE series


C3	–	MA	–	T	/	MR	/	C	/	Z	/	A	/	HV	–	R	–	0,40	/	KV	–	R	–	0,40
\|		\|		\|		\|		\|		\|		\|		\|		\|		\|		\|		\|		\|
1		2		3		4		5		6		7		8		9		10		11		12		13

1 Type
C3 FSL-CONTROL III

2 Control function
MA Master
SL Slave

3 Real time clock
Only with variant MA

No entry: without real time clock
T with real time clock

4 Interface
No entry: without interface

MT with Modbus TCP
MR with Modbus RTU (only with variant MA)
BI with BACnet IP

BM with BACnet MS/TP (only with variant MA)

5 Air quality sensor
Only with variant MA

No entry: without air quality sensor
C witch CO₂sensor
V with VOC sensor

6 Supply air temperature sensor
No entry: without supply air temperature sensor

Z with supply air temperature sensor

7 Outdoor air temperature sensor
Only with variant MA

No entry: without outdoor air temperature sensor
A with outdoor air temperature sensor

8 Valve – heating circuit
No entry: without heating valve
HV with heating valve

9 Lockshield – heating circuit
No entry: without lockshield

R with lockshield

10 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 valvel)

11 Cooling valve

KV with cooling valve

12 Lockshield cooling circuit

R with lockshield

13 Kvs-value cooling valve
nur mit Wärmeübertrager 4
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 valvel)

Order example: C3-MA-T/MR/C/Z/A/HZ-R-0.40/KV-R-0.40

Type	C3 – FSL-CONTROL III
Control function	Master
Real time clock	with real time clock
Interface	with Modbus RTU
Air quality sensor	with CO2 sensor
Supply air temperature sensor	with supply air temperature sensor
Outdoor air temperature sensor	with outdoor air temperature sensor
Heating valve	with heating valve
Lockshield – heating circuit	with lockshield
kVS value – heating valvel	0,40 ((straight-way valve)
Cooling valve	with cooling valve
Lockshield – cooling circuit	with lockshield
kVS value – cooling valve	0,40 (straight-way valve)

Descargas

Información sobre el producto

Product data sheet Type FSL-CONTROL III

FSL-CONTROL-III_PD_2025_10_09_DE_en Product data sheet 650 KB pdf

Manuales de funcionamiento

Installation and configuration manual FSL-CONTROL III for decentralised ventilation units

FSL-C_III_SM_A00000080125_V1_2020_04_GB_en Installation and configuration manual 4,9 MB pdf
Installation and configuration manual FSL-CONTROL III for decentralised ventilation units from software version 6.0

FSL-C_III_IOM_A00000080125_V2a_2021_12_GB_en Installation and configuration manual 5,5 MB pdf

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FSL-CONTROL III

Autonomous single room control, optionally with communication to the management and control equipment/building automation and control systems (MCE/BACS)

General information

Información técnica

Descargas

Información sobre el producto

Product data sheet Type FSL-CONTROL III

Manuales de funcionamiento

Installation and configuration manual FSL-CONTROL III for decentralised ventilation units

Installation and configuration manual FSL-CONTROL III for decentralised ventilation units from software version 6.0

TÉCNICAMENTE NECESARIO

ESTADÍSTICAS Y ANÁLISIS DEL SITIO WEB

CONVENIENCIA Y PERSONALIZACIÓN

PARA LA MEJOR EXPERIENCIA TROX