FSL-CONTROL III

FSL-CONTROL IIIfor decentralised ventilation units

Outdoor air operation can be set using the control panel, X-TAIRMINAL or the central BMS

100% outdoor air can be set using control panel, X-TAIRMINAL or BACS

M171-72_62420_CPSCT17003A_edited_by_Msp_20210218psd.psd.link

Digital control panel for surface mounting, type Schneider

Digital control panel including temperature sensor and CO₂ traffic light

Part number: A00000086157

Control panel without selector switch for surface mounting

Control panel for flush mounting, switches from the Busch Jäger Future linear range, for example

Part number: A00000079779

Schematic illustration

Operation and parameter setting by means of integral web server

① Stage

Pressure-independent control valve

Part number: A000000355196

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-operate single room control system as a plug and play solution for decentralised ventilation units: can be combined with façade ventilation units to provide demand-based ventilation and enable the control of the water-side components of the heating and cooling circuits or of an electric air heater

Variable heat recovery all year round – for maximum fresh air volume, even in winter
Demand-based CO₂or VOC led outdoor air supply and temperature control for each room
100 % outdoor at the touch of a button
Low-noise operation at the touch of a button
Purge at the push of a button (boost)
Individual indoor air quality adjustment
Integration of secondary systems, e.g. heated or chilled ceilings
Room temperature control or isothermal outdoor air supply
Electric reheating for selected variants
Comfortable configuration of devices via the web server – no operating software required
Parallel operation with fume cupboards
Optional connection to BACS or X-TAIRMINAL

General information

Application

Single room control system for decentralised TROX ventilation units
Ready to operate, factory wired single room control system, either built into the unit or in a separate control equipment box
Factory wired and tested before shipping
Controls all functions of a decentralised ventilation unit
Choice of control strategies
Setup – connect – outdoor air: no external peripheral systems required
Either with 100 % outdoor air or with energy-efficient secondary air operation based on air quality
Economical integration with the central BMS
Factory configured web server provides additional information and allows for adjustments
Use many different decentralised units with the same controller and the same data points

Special characteristics

Simple integration with the central BMS by means of RS485 or Ethernet interface
Comfortable device configuration with the web server – no operating software required
Master-slave combinations are available (up to 10 slaves per master)
Automatic, energy-efficient switching between outdoor air mode and secondary air mode (based on air quality, depending on unit)
Permanent outdoor air operation can be activated with a control panel, X-TAIRMINAL or BACS
Variable bypass damper for heat recovery control
Heat recovery all year round
Economical integration with the central BMS – excellent overview and usability thanks to reduced number of data points
Read out slave data using the master's BACS interface – significantly reduced number of bus devices
One system for all devices in a room: all devices work in the same way with only one connection point to the central BMS
13 digital switch contacts for the connection of peripheral systems (by others), for simple higher-level control functions and for monitoring
Continuous internal data logging – retrospective monitoring, error analysis and operational optimisation
Software update and parameter setting or adjustment for all devices from a central point by means of an IP connection
Remote diagnosis by means of 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 modes based on time (7 different profiles, 10 switching points per profile)
Bus communication by means of
- Modbus RTU
- Modbus TCP
- BACnet MS/TP
- BACnet/IP
Digital control panel with project-specific software
Analogue control panels (can be integrated with various switch frames)
Electric valve actuators
Balancing and control valves (independent of pressure)
Electric reheater (only with SCHOOLAIR-V-HV-EH, SCHOOLAIR-D-HV-EH, SCHOOLAIR-S-HV-EH)
Display with 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 sheet steel, powder-coated RAL 9005 (unless already integrated into the decentralised ventilation unit)

TECHNICAL INFORMATION

Function, Technical data, Specification text, Order code

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.

Specification text

FSL-CONTROL III is a stand-alone single room control system with a simple timer. Optional expansions, e.g. connection to the BACS with Modbus TCP/RTU, humidity sensors, return temperature sensors, electric valve actuators or pressure-independent control valves, are part of the supply package, but will have to replace the standard components in the following description. A room temperature signal is also required. Various room control panels and sensors are available to provide this signal. Suitable optional equipment is described in the appendix to the following standard equipment for stand-alone 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 ...):

Single room controller that can be mounted on a DIN mounting rail in the ventilation unit or in a separate control equipment box

42 digital or analogue inputs and outputs
Integral MicroSD card with up to 2 GB storage space (flash storage medium). Trend data is stored on the SD card and can be accessed via the RJ45 service socket or optionally with Modbus TCP
Factory installed software package for master units, specially developed for decentralised ventilation units. The software allows for simple master-slave communication with 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 Ventilation and Fan Forced Circuit)
Two strategies, either room temperature control by controlling heating and cooling valves or modulating bypass damper, or supply air temperature control for isothermal ventilation
CO₂- guided air quality control
Heat recovery all year round
Filter monitoring
Configurable digital inputs, e.g. for the connection (by others) of PIR sensors, window contacts or holiday mode
Two types of alarms, A (=switch-off) and B (=warning)

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

Part of the master software package
Includes a simple timer
- 7 days with 10 switching points each
- Automatic switching between summer and winter time
- Night purge schedules

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
NDIR sensor that compensates for contamination thanks to two infrared beams
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 × straight-way valve 1/2" as standard, mounted (finger-tight), PN 16, DN10, k_VS 0.4 (alternatively: 0.25, 0.63 or 1.0 m³/h – please specify the required K_VS value), threaded connection G 1/2B, fluid temperature 1 to 110 °C

Lockshields:

1 ×/2 × lockshield on both sides 1/2", mounted (finger-tight), nominal width DN 15; 1/2", straight through valve with male 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 a number of 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 room control units provided must be connected via bus communication.

Digital control panel for surface mounting

For operation and adjustment of the ventilation units. Supplied loose as an accessory. Project-specific software including setpoint value 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 with a standard junction 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 devices by means of a Modbus serial connection

Control panel with selector switch for surface mounting

For the manual control of ventilation units
Supplied loosely as an accessory, push button and setpoint adjuster, status LED, 5-step switch (off, 1, 2, 3, automatic); NTC thermistor as sensor, 20 kΩ, protection level IP 20; for surface mounting or flush mounting with a standard junction box
Type Thermokon: dimensions (H × W × D): 84.5 × 84.5 × 25 mm, colour: pure white

Control panel without selector switch for surface mounting

For the manual control of ventilation units
Supplied loosely as an accessory, push button, setpoint adjuster, status LED, IP 20 protection
Thermokon: Sensor: NTC 20 kΩ, 84.5 × 84.5 × 25 mm (B × W × D)

Room temperature sensor TROX RTF3 for surface mounting

Supplied loosely as an accessory.
Room sensor without control elements
Sensor: NTC 10 kΩ
Protection level: IP 20
Installation: Surface mounting or on a 70 mm flush box.
Dimensions (B × W × D): 85 × 85 × 30 mm
Colour: RAL 9010

Control panel without fan stage selector for flush mounting

For manual operation High-quality look and matching design frame from a wide range, ideal for design interiors
Supplied loosely as an accessory.
Mode display with LED, push button, setpoint adjuster; sensor: NTC 20 kΩ
Protection level: IP 20
Flush Installation with standard junction box
Available ranges of switches: Berker S.1, Berker Q.3, Busch Jäger Future linear (other switches upon request)

Control panel without fan stage selector and without setpoint value adjuster for flush mounting

For manual operation High-quality look and matching design frame from a wide range, ideal for design interiors
Supplied loosely as an accessory.
Mode display with LED, push button, setpoint adjuster; sensor: NTC 20 kΩ, IP 20 protection
Flush Installation with standard junction box
Available ranges of switches: Gira E2 (other switches upon request)

Optional equipment to increase the comfort of the FSL-CONTROL 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 2.5 VA max.
Control signal 0 – 10 V DC
Fluid temperature 1 – 110 °C

Pressure-independent control valve

As an alternative to the standard small straight-way valve
1 ×/2 × pressure-independent control valve
Mounted (finger-tight)
Modulating open/close control combined with an externally adjustable dynamic volume flow controller, with full valve authority
Nominal width DN 10, 1/2"
Straight through valve casing with male thread on both ends, flat seal
Fluid temperature 0 – 120 °C

Interface for connection to BACS

To increase comfort, we recommend integration with a BACS (by others).
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 our technical service.

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 k_VS-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 k_VS-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
k_VS 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)

Wiring

Power supply connection

1 Ölflex classic 100 3G 1.5 mm², min. length 1 m

(TROX supply package)

SCHOOOLAIR-D-HV-EH: Ölflex classic 3G 2.5 mm², min. length 1 m

(TROX supply package)

SCHOOOLAIR-S-HV-EH: Ölflex classic 3G 2.5 mm², min. length 1 m

(TROX supply package)

2 3.15 A fuse

3 SCHOOLAIR-V-HV-EH only: 10.0 A fuse

SCHOOLAIR-D -HV-EH only: 13.0 A fuse

SCHOOLAIR-S -HV-EH only: 13.0 A fuse

FSL-CONTROL_III_WRF04-PSTD_NTC20k_5k_FS5_gn_5V_SAsvg.png

FSL-CONTROL_III_WRF07-PTD-NTC20k-BTyp6-5k-gn_BerkerQ3svg.png

M171-72_62420_CPSCT17003A_edited_by_Msp_20210218psd.png

General information

Use only cables that are designed for the supply voltage for which they will be used. The length and cross section as well as any contact resistance may increase voltage losses. The power rating of each decentralised ventilation unit in accordance with the following table must also be considered.

A skilled qualified electrician has to select the correct cable types and sizes. This job must only be carried out by specialist electrical companies. The power ratings are listed below.

Power rating
Under a sill (horizontal installation)

Unit type	Apparent power [VA]
FSL-B-ZAB/SEK	234
FSL-B-ZAB+SEK	255
SCHOOLAIR-B	238
SCHOOLAIR-B-HE	547
SCHOOLAIR-B-HV	617