133/166
Siemens
RXB (KNX) application library
FNC Description of functions for FC-10, FC-11, FC-12 CM110385en_05
Building Technologies
General and central functions
28 Feb 2009
100
TR
103
85D
27
0
Y [%]
SpH
Eco
SpC
Eco
0.5K
Fan
The following condition must be fulfilled:
– The room controller must be in
Economy
or
Precomfort
mode.
The function can be disabled in the room controller by means of the ETS3 tool; see
Central functions, page 123.
The function must be enabled via the building automation and control system
(communication object
Application mode
, see page 128).
The function is terminated:
– when the controller switches from
Economy
or
Precomfort
to another operating
mode.
– when the function is disabled via the building automation and control system
– when the safety thermostat in the outside air duct indicates frost (see also
"Alarming", below).
11.14 Free cooling (Freecool, 10)
This function is used to precool rooms to the
Comfort
cooling setpoint, in readiness for
normal occupancy. It uses both fan and cooling coil.
This function is meaningful only if low-tariff energy is available.
During occupancy (
Comfort / Precomfort
) normal mode applies.
100
TR
103
85D
28
0
Y [%]
SpH
Cmf
SpC
Cmf
Fan
Cooling
coil
The function can be disabled in the room controller by means of the ETS3 tool ,
together with Pre-cooling, see central functions, page 123.
The function must be enabled via the building automation and control system
(communication object
Application mode
, see page 128).
The function is disabled via the building automation and control system.
Enabling the function
Initiating the function
Terminating the function
Enabling the function
Initiating the function
Terminating the function