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3. Product and functional overview
The Inwall Room Thermostat TM11A01KNX/TM11A11KNX is an EIB/KNX wall mounting
device designed for HVAC applications in Home and Building installations (i.e. offices,
hospitals, hotels, private houses, etc..).
The device is equipped with one binary input (potential free contact) that can be used, for
instance, to control the HVAC units whether a window has been opened (or closed) or for
any other general purpose usage and one binary output relay to control fan coils or for any
different purposes.
The temperature control is managed with an On/Off, Proportional, Integrative or PI
algorithm and can be configured to control the following applications:
Heating and Cooling with two tubes common to both fluids (Warm and Cold).
Four circuits for heating and cooling
1, 2 or 3 fancoil speed in ON/OFF regulation
Proportioned motorized valves regulation (continuous control).
In addition to the temperature regulation described, the thermostat allows the following
operating modes:
User inside the room (Comfort mode). The regulation follows the set point that is
fixed from the control/supervision center or modified by the client.
User outside the room (Standby mode). The regulation follows the set point fixed
from the control/supervision center for this mode.
Night Application (Economy Mode). The regulation follows the set point fixed from
the control/supervision center for this mode.
Antifreeze (frost protection).
The user, using dedicated push buttons placed in front of the thermostat, can modify the
temperature setpoint and fancoil speeds.
In case user changes the fancoil speed via a front push button the thermostat pass from
automatic to manual functioning. The automatic functioning mode is restored when the
functioning scheme changes (Comfort, Standby or Economy).
In the thermostat the following parameters can be configured:
Room Temperature Set Point (from 5,0 to 45.0°C or °F correspondent value). The
set point is normally fixed from the control/supervision centre. The client can vary
the set point trough dedicated buttons. The variation can be executed in between
limits fixed from the control/supervision centre (minimum and maximum).
Fan Coil Speed (OFF,1, 2, 3). The fan coil speed is normally managed automatically
from the thermostat. If the clients modify the speed set, the thermostat is forced in
manual mode. The fan coil will get off when the temperature is reached.
Comfort temperature set point (one for cooling and one for heating). This parameter
is set from the control/supervision centre and used when the client is in the room.
Stand by Temperature Set Point (one for cooling and one for heating). This
parameter is set from the control/supervision centre and used when the client is not
in the room.
Economy Set Point (one for cooling and one for heating). This parameter is set from
the control/supervision centre and used when the room is not assigned or by night
to generate an energy saving.
System Type: Two Tubes ON/OFF (only heating, only cooling or both), Four Tubes
ON/OFF (heating and cooling with independent lines), Two Tubes with proportional
command, Four Tubes with proportional command. The parameter is fixed while
installing or testing the system, using ETS SW.
Valves Type: ON/OFF Valves, or Motorized. The parameter is fixed while installing
or testing the system, using ETS SW.
