Terminals Explanation - Salus FC600 Full User Manual

4.5. Terminals explanation

Note: If you are using an external sensor
please make sure that you are following
the sensor instructions below and also
that all the setting are done accordingly
on the fan coil.
S1 Terminal connection
S1
NoFn
No function
Nothing is connected to S1/COM
terminal. The Heat/Cool can be
changed only manually using the
Mode button or the App if both
modes are available.
S2 Terminal connection
S2
NoFn
No function
Nothing is connected to S2/COM terminal.
41 Fan Coil FC600 Instructions Manual
S1
HCCO
Heat/Cool Changeover
When the S1/COM terminal
is open, the Heat function is
activated.
When the S1/COM terminal
is closed, the Cool function is
activated
Default setting:
Occupancy sensor
Occupancy sensor is connected to the S2/COM
terminal (e.g.: hotel card).
Default setting:
S2
FC600
F3 F2 F1
S1
Auto
Auto Heat/Cool Changeover
In 2 pipe system - S1 = Auto,
the pipe temperature sensor is
connected, and it is deciding
in what mode the thermostat
should be working.
In 4 pipe system - S1 = Auto -
it means nothing is connected
to S1/COM, and thermostat is
measuring the room temperature
to select the Heating or Cooling
mode.
S1
NoFn
S2
Door
S2
NoFn
S1
T2 T1
S2 COM S1
V2 V1 N L
S1
SenS
Fan Sensor
Available for 2 pipe only. Pipe
sensor is connected to the S1/
COM terminal. Pipe sensor is
used to allow the fan to run or
not. Heat/Cool selection is done
manually.
S2
SenS
External temperature sensor
The temperature read by the sensor will be
displayed on the Fan coil LCD. The internal
sensor in the Fan coil will not be used.