Trox Technik FSL-CONTROL II Installation And Configuration Manual page 18

Control of ventilation units
FSL‑CONTROL II > Functional description
3.1.2.4 Fan stages
FSL‑CONTROL II automatically selects the correct fan
stage based on temperature control or air quality
(optional). The fan stage can also be preset by the cen-
tral BMS (by others) or from a control panel.
Fig. 15: Fan stages – priority
3.1.2.5 Air quality control
Air quality control means that the outdoor air flow rate is
controlled based on the room air quality.
This type of control is only possible with an air quality
sensor (optional equipment or by others). The optional
VOC sensor captures various VOC emissions that are
linked to the CO content of the room air.
2
Air quality control is always active in 'Occupied' mode. It
can additionally be activated in 'Standby' mode.
Air quality control – factory settings
VOC value [ppm]
< 600
600 – 800
800 – 1000
> 1000
The system owner can adjust the air quality values
Ä Chapter 3.2.2.2 'Fan stage adjustment based on air
quality' on page 27.
Secondary air and outdoor air modes
‑ CONTROL II ensures that units with secondary
FSL
air function start in secondary air mode, which is
energy efficient. As soon as the VOC value for fan
stage 1 is exceeded, the unit automatically switches
to outdoor air mode. Preset minimum periods of time
ensure that not too many quick changes between the
fan stages occur.
18
Fan stage
Secondary air operation
1
2
3
Single room control system FSL‑CONTROL II
3.1.2.6 Operating modes
FSL‑CONTROL II can be used for the following oper-
ating modes:
Occupied

Standby

Unoccupied

Boost

You can define different comfort temperature ranges for
these operating modes.
You can define daily schedules and enter a start time for
each operating mode. Using the optional real time clock
(RTC) allows for defining 5 switching points per day. If
no RTC is used, operating modes must be changed by
the central BMS.
The comfort temperature range for all operating modes
can be changed from the central BMS or using the con-
trol panel.
Occupied
The 'Occupied' mode is used for occupied rooms.
The following parameters can be set:
Comfort temperature range

Supply air temperature limits for heating/cooling

Standby
The 'Standby' mode is used to raise the temperature of
a room before it is actually occupied.
The following parameters can be set:
Comfort temperature range

Supply air temperature limits for heating/cooling

Recommended:
– Use this operating mode in the early morning
(e.g. from 6 to 7 am).
– Note the operating times of the heating and
cooling systems.
Unoccupied
The 'Unoccupied' mode is used for unoccupied rooms.
The following parameters can be set:
Comfort temperature range

Supply air temperature limits for heating/cooling
