Trox Technik FSL-CONTROL II Installation And Configuration Manual page 22

Control of ventilation units
FSL‑CONTROL II > Functional description
3.1.2.8 Interfaces
FSL‑CONTROL II masters provide 3 digital inputs and
3 digital outputs. You can use these for the following or
for other functions:
Inputs

– Frost protection hardware: Additional frost
protection sensor, e.g. capillary tube sensor with
a digital output, as an additional means of
switching units safely off if there is a risk of
freezing.
– Window contact: As soon as a window is
opened, the master and slave devices in the
room (connected via a communication cable)
will be switched off.
– Changeover function: Allows for changing
from heating to cooling and vice versa in 2-pipe
heat exchangers.
– Fire protection: Master and slave devices are
switched off if a signal is received at the corre-
sponding input.
– PIR: 'Occupied' mode can be manually enabled.
Outputs (all contacts can be configured as NO or

NC contacts).
– Alarm relay: Frost protection
– Activation relay: Signal regarding a heating or
cooling request in changeover operation.
– Analogue output: No power
Digital inputs
Factory setting: not configured
Digital outputs:
Max. contact load of relays: 230 VAC, 2 A
22 Single room control system FSL‑CONTROL II