STRA-07 Room Controller. Installation and maintenance manual.
STRA-07 for Fancoils
Fläkt Woods
8713 GB 2014.04
8
Specifications are subject of alteration without further notice.
Configuration
The controllers are configured via the display through
setting the required parameters. See section Display
handling/Parameter menu. Different applications require
different parameters to be set.
Operating modes
STRA-07 has five different operating modes. Through the
occupancy button you are able to switch between three of
them. Occupied is the preset mode.
Off
Operating mode Off means that the controller is not
heating or cooling, and the fans are stopped. However,
the temperature must not drop below the set minimum
temperature (FS=8°C). If it does, the controller will start
heating, and (if a fan is used) start the fan whether it has
been manually stopped or not.
Display: The background lighting is not lit, and only OFF
is shown in the display.
Unoccupied
Operating mode Unoccupied means that the room where
the controller is placed is not used for an extended
period of time, for example during holidays or long
weekends. Both heating and cooling are disconnected
and the fans are stopped within a temperature interval
with configurable min/max temperatures (FS min=15°C,
max=30°C).
Display: The background lighting is not lit, but the
current room temperature (or setpoint depending on the
configuration) is shown in the display. OFF is also shown
in the display.
Stand-by
Operating mode Stand-by means that the room is in
an energy save mode and is not used at the moment.
This can be during nights, weekends, evenings etc.
The controller is prepared to change operating mode
to Occupied (comfort) if someone enters the room
(presence). The room temperature is controlled around
the applicable heating and cooling setpoints, with
an extended temperature interval (FS=+/-3°C). For
example, if the heating setpoint=22°C and the cooling
setpoint=24°C, the controller will allow the temperature in
the room to be between 19°C and 27°C. The setpoints can
also be ad/- 3°C via the display.
Display: the background lighting is lit (dimmed).
STANDBY and the current room temperature (or setpoint
depending on the configuration) are shown in the display.
Occupied
Operating mode Occupied means that the room is in
use and is therefore in a comfort mode. The controller
regulates the room temperature around a heating setpoint
and a cooling setpoint (FS heating setpoint=22°C, cooling
setpoint=24°C). The setpoints can also be ad/- 3°C
locally via the display, or via a central command.
Display: the background lighting is lit (dimmed), and the
occupancy indication is shown (see the chapter Display
handling). The current room temperature (or setpoint
depending on the configuration) is also shown in the
display.
Bypass
Operating mode Bypass means that the controller controls
the room temperature in the same way as in operating
mode Occupied. The output for forced ventilation is
also active. After a configurable time (FS=2 hours) in
Bypass, the controller automatically returns to the preset
operating mode.
Bypass is normally activated when the Occupancy
button is pressed, via an occupancy detector or a central
command. The operating mode is useful for example in
conference rooms, where many people are present at the
same time for a certain period of time.
Display: the background lighting is lit (dimmed).
The occupancy indication and the symbol for forced
ventilation are shown (see the chapter Display handling).
The current room temperature (or setpoint depending on
the configuration) is shown in the display.
Activation of the different operating modes
Preset operating mode
Occupied is the preset operating mode. On models
without display the preset mode can be changed to Stand-
by using dipswitch SW3. OFF (FS): Occupied, ON: Stand-
by. This is configured in the parameter menu in the
display, parameter 45. The operating mode is changed at
the following events:
• When the Occupancy button is pressed (if the controller
has an Occupancy button).
• Activation/deactivation of an occupancy detector on the
digital input.
• CO
2
value exceeded.
• Via central control, for example central time control,
central booking system etc.
Occupancy button
