Siemens Synco-Gamma, Application Manual

Page: 19 / 63

Application Manual
Nr. 02
Hotel rooms – room automation
Synco™
& Gamma
19
Function
description Description of functions
Individual room temperature control
The room unit (QAX) acquires the temperature and
makes it available to the room controller (RXB) which
controls the fan coil unit and calculates the demand
for heat/refrigeration. The result of the calculation is
sent to the primary controller via the KNX bus.
In the bathroom, the AQR acquires and controls the
temperature and feeds the positioning signal to the
radiator’s valve actuator.
Time program and hotel booking system
Time programs for up to 10 rooms or room groups
can be defined in the central control unit (RMB). A
time program sets the periods of time the room is not
used. During these time periods, the operating mode
is set to Protection, resulting in a lower temperature
setpoint. After that, the setpoint is raised to the Econ-
omy level.
Room automation can also communicate with the
hotel’s booking system. When the guest checks in,
the room temperature is prematuraly raised to the
Comfort level. During the periods of time the hotel is
closed or in non-booked rooms, valuable heating
energy is automatically saved by changing the operat-
ing mode to Economy.
Window contact
If one or several windows of a room are opened, the
operating mode changes automatically to Protection.
This means that heating or cooling energy is saved
since the system does not try to compensate for
energy losses.
Presence-dependent heating control
When the hotel card switch signals room occupancy,
the room temperature is raised to the Comfort level.
Then, it is lowered again to the Precomfort level.
Presence-dependent lighting control
When the room is no longer occupied, the lighting and
individual electric circuits are automatically switched
off.
Blinds control
The weather station (AP257/32) with its built-in GPS
receiver measures solar radiation and controls shad-
ing to protect the façade against sunlight. Up to 4
façades can be selected for automatic and individual
control.
In cold winter nights, the blinds are lowered to improve
the building’s thermal insulation. On sunny winter
days, the blinds are raised, allowing sunlight to enter
the room so that energy is gained.
When the room is occupied, automatic operation is
deactivated. The blinds can then be controlled via the
pushbuttons.
Protection of blinds
The weather station acquires continuously the wind
speed. If strong winds occur, the blinds are raised to a
secure position.
Remote control and monitoring
Using a webbrowser, all rooms can be controlled and
monitored via webserver (OZW). The following pa-
rameters can be monitored:
·
Current state of windows and doors
·
Current room temperatures
·
Current room temperature setpoints
·
Current operating modes
If required, the following parameters can be changed:
·
The room operating modes, individually or
in groups
·
The room temperature setpoints, individual-
ly or in groups
·
The time program for every room or for
groups of rooms
Display of energy efficiency
The OZW772 webserver is able to display the HVAC
system’s energy efficiency, which reminds the user if –
from the point of view of energy efficiency – settings
beyond the permitted limits were made. If nonefficient
operating states occur, the user is notified via e-mail
or smartphone app. The limit values can be set by the
user.