Argus RC H

2
RC-H
RC-H
RC-H
Control states
Argus-RC-H has control state:
• Heating and cooling in sequence
The change-over function can be activated, see below.
Operating modes
There are three different operating modes: Stand-by,
Occupied and Bypass. Occupied is the preset operating
mode. It can be changed to Stand-by with a dipswitch.
The operating modes can be activated via an occupancy
detector.
Stand-by: The room is in an energy save mode and
is not used at the moment. This can for example be
during nights, weekends, evenings etc. The controller
is prepared to change operating mode to Occupied if
someone enters the room. Both heating and cooling are
disconnected within a temperature interval around the
applicable setpoint (heating setpoint value=-3°C, cooling
setpoint=+3°C).
Occupied: The room is in use and is therefore in a
comfort mode. The controller regulates the temperature
around a heating setpoint (22°C) and a cooling setpoint
(24°C).
Bypass: The temperature in the room is controlled in the
same way as in operating mode Occupied. The output
for forced ventilation is also active. Bypass is useful for
example in conference rooms, where many people are
present at the same time for a certain period of time.
After 10 minutes absence, the controller will
automatically return to the preset operating mode
(Occupied or Stand-by).
Occupancy detector
By connecting an occupancy detector, Argus-RC-H
can switch between Bypass and the preset operating
mode (Occupied or Stand-by). The temperature is then
controlled according to requirement, which saves energy
and keeps the temperature at a comfortable level.
Change-over function
Argus-RC-H has an input for change-over that
automatically resets output UO1 to operate with heating
or cooling function. The input can be connected to
sensors of type PT1000 and have the sensor mounted so
that it senses the temperature on the supply pipe to the
coil.
When the temperature exceeds 22°C, the output function
is set to heating and when the temperature drops below
18°C, the output is set to cooling.
As an alternative, a potential-free contact can be used.
When the contact is open the controller works with the
heating function and when it is closed, with the cooling
function.
To ensure satisfactory functioning using sensor, the system
must have continuous primary circuit circulation. When
the change-over function is not used, the input must be
left disconnected.
Hidden setpoint
Argus-RC-H has hidden setpoint, which is useful
in schools and other buildings where unauthorised
adjustment of the setpoint is to be avoided.
In Occupied mode, the controller operates from a heating
setpoint (22°C) or a cooling setpoint (24°C) that can be
changed locally using dipswitches.
The setpoint can be adjusted up and down (±3°C)
from the back of the electronics cassette using a small
screwdriver.
Switching between heating and cooling setpoints is done
automatically in the controller depending on the heating
and cooling requirement.
Built-in safety functions
Argus-RC-H has an input for a condensation detector
which prevents condensation. The controller also has frost
protection. It prevents frost damages by by ensuring that
the room temperature does not drop below 8°C when the
controller is in Off-mode (caused by open window).
Actuator exercise
All actuators are exercised. The exercise takes place at a
23 hours interval. An opening signal is sent to the actuator
for as long time as the run time has been configured. Then
a closing signal is sent for as long time and the exercise is
finished.
Application example
Window
contact
IR
Temp
Condensation detector