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Electrical installer
30
4
Figure 4.2
Boiler power supply
SPM
Male plug
B
Blue
G/V
Yellow/Green
M
Brown
N
L
1
2
3
4
SPM
L
N
B
3
S
3
T2
T1
N
T
L
230 V - 50 Hz
B
G/V
M
4.3
CONTROL DEVICE
The Caldaria Con export is supplied as standard with
an electrical bridge mounted on the Ta-Ta terminals (Caldaria
35) or on the T1-T2 terminals (Caldaria 55.1 and Caldaria 100.2),
so that it can meet the service requests even without any oth-
er control device, based solely on the board parameter settings
and the operating mode set via the control panel on board the
boiler.
This mode has some limitations, mainly related to the fixed tem-
perature and the possibility to change the settings only through
the control panel of the boiler.
The following Table 4.1
p. 30 summarizes the features associ-
ated with the different control devices.
Table 4.1
Available features depending on controls
Control devices
Description
None
Heating at fixed temperature, based on the parameters set on the control panel onboard the boiler.
WARNING: the boiler can only be activated/deactivated by acting on the boiler control panel.
External request
Heating at fixed temperature, based on the parameters set on the control panel onboard the boiler.
Activation/deactivation based on external request, connected to the Ta-Ta terminals (Caldaria 35) or T1-T2 terminals (Caldaria 55.1
and Caldaria 100.2).
Room thermostat
Heating at fixed temperature, based on the parameters set on the control panel onboard the boiler.
Activation/deactivation based on the temperature detected by the room thermostat and its settings.
OCDS006 remote control
Heating at fixed temperature, based on the time programming set on the remote control.
Diagnostics and error reset.
Activation/deactivation based on the temperature detected by the remote control and its settings.
Cascade controller
ODSP039 (combined with
OT/Modbus interface ODSP040,
except Caldaria 100.2)
Heating at variable temperature, based on the time programming set on the controller.
Activation/deactivation based on the temperature detected by the room thermostat and its settings.
Control with the same controller of up to 8 boilers in cascade, each of which must be equipped with its own OT/Modbus interface
(except for the Caldaria 100.2, which already has the card onboard).
Possibility to manage temperature probes, mixing valves and tappings on the system.
Additional optionals can be associated with each of the above
devices to achieve more complete and complex control
functionality.
For example, it is possible to combine the OSND009 outdoor
probe with the OCDS006 remote control to obtain the variable
temperature heating service according to the climate curve set-
tings, based on the time schedule set on the remote control.
Table 4.2
Additional features available
Control devices
Description
Outdoor probe OSND009
It allows to detect the outdoor temperature and, by setting the climatic curve, to obtain a variable delivery temperature, according to
the outdoor temperature.
The parameters of the climatic curve are set on the control panel of the boiler or on the cascade controller ODSP039.
DHW buffer tank probe OSND011
It allows managing the temperature in the remote DHW buffer tank, activating and deactivating the DHW request accordingly.
The parameters of the DHW service are set on the control panel of the boiler or on the cascade controller ODSP039.
This device is an alternative to the use of a simple DHW buffer tank thermostat (described below).
DHW buffer tank thermostat
Allows to activate/deactivate the DHW request based on the temperature measured in the remote DHW buffer tank and the thermo-
stat settings.
The parameters of the DHW service are set on the control panel of the boiler or on the cascade controller ODSP039.
This device is an alternative to the use of the DHW buffer tank probe OSND011 (described above).
OT/Modbus interface ODSP040
Required for interfacing with the ODSP039 cascade controller. On the Caldaria 100.2 is already supplied.
4.3.1
Positioning the control system
Install the chosen thermostat/control system according to the
following guidelines:
▶
Place it inside the heated room, in an area that is representa-
tive of the room temperature, at about 1,5 m from the floor,
protected from draughts, direct exposure to sunlight, influ-
ence by direct heating sources (lamps, hot air flows from the
appliance itself, etc.).
▶
Avoid installation on walls bordering the outside, to avoid
distortion on the detected temperature and therefore affect
system operation. Otherwise, shield the control system by
placing a sheet of insulating material (cork, polystyrene or
other) between it and the wall.
By following the above guidelines, unwanted starting
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