Electrical installer
32
4
Figure 4.6
Connection of OSND009 outdoor probe to Caldaria 55.1 and
100.2
SE Outdoor probe OSND009
SPM Male plug
SE
N
L
T
S3
B4
T2 T1
SPM
4.3.5
Connection of OT/Modbus interface
Refer to the documentation supplied with the ODSP040
OT/Modbus interface.
4.4
OPERATION VIA CENTRALISED
EXTERNAL REQUEST
The appliance's operation can also be controlled via a central-
ized external request. This request, activated for example by a
programmable timer or another system, can be used for the cen-
tralised activation or deactivation of specific services, even on
several boilers.
This feature does not replace the external request control de-
tailed in Paragraph 4.3
p. 30 but is additional. The purpose of
the external request is to manage the switching on and off of
the individual boiler, typically based on the temperature in the
reference room.
The purpose of centralized external request is instead to have
a generic enable signal for specific services on all boilers con-
nected to it. In the absence of the signal (CS contact open) the
boilers will be enabled for the operation of the specific service
(and will be activated or not based on the settings of the specific
control device). In the presence of the signal (CS contact closed)
the boilers will be disabled on the specific service, whatever the
environmental conditions.
When closing the CS contact, one of the following functions can
be excluded:
▶
DHW request (Caldaria 35 and Caldaria 55.1 only): if the val-
ue of parameter P01 is set to 0 and the value of parameter
P17 is set to 1 (Paragraph 5.4
p. 35), when closing the CS
contact the activation request for DHW is disabled.
▶
DHW buffer tank charging: if the value of parameter P01 is
set to 2 or 3 (Caldaria 35 and Caldaria 55.1) or 0 (Caldaria
100.2) (Paragraph 5.4
p. 35), when the CS contact is closed,
DHW buffer tank charging is disabled.
▶
Heating request: If the value of parameter P01 is set to
5 (Caldaria 35 and Caldaria 55.1) or 1 (Caldaria 100.2)
(Paragraph 5.4
p. 35), when closing the CS contact the ac-
tivation request for heating is disabled.
For the electrical connection of the centralized external request,
follow the instructions below:
▶
For Caldaria 35: connect the centralized external request to
the CS terminal block on the left side of the control panel
(Figure 1.18
p. 16).
▶
For Caldaria 55.1 and Caldaria 100.2: connect the central-
ized external request to the CS terminal block located in-
side the MP panel terminal block (Figures 1.19
In the case of centralized management of several boilers,
each request must be connected through the interposi-
tion of a relay.
For further information on the operation and use of
boilers in this mode, please contact the Robur technical
service.
4.5
DHW PRODUCTION
The Caldaria Con export appliances can manage au-
tonomously the production of buffer tank DHW, through the
control of an external 3-way diverter valve directly connected to
the boiler itself that feeds the coil of a DHW buffer tank.
To control the temperature in the DHW buffer tank, a tempera-
ture probe, available as OSND011 optional, can be used, or al-
ternatively a thermostat in the DHW buffer tank, appropriately
set. These devices must also be connected directly to the boiler.
The parameters for DHW production management will be set
directly on the control panel on the appliance.
4.5.1
Connection of DHW diverter valve
The DHW diverter valve must be connected to terminals 8-9-
10 (connector M4) of the electronic board (master board for
Caldaria 100.2) (Figure 4.7
▶
neutral (common) on contact 9
▶
phase (DHW position) on contact 8
▶
phase (heating position) on contact 10
The valve is powered at 230 V AC directly from the electronic
board of the boiler.
The valve must be of the type with supply (neutral) always pres-
ent and position piloted by the phase present on the contact
corresponding to the position to be taken.
The default position is for DHW (phase on contact 8), and is
changed when there is a heating request (phase on contact 10).
The maximum applicable resistive load is 2 A.
The cable may not be longer than 50 metres, with a minimum
cable cross-section of 0,5 mm
2
.
Содержание Caldaria 100.2 Condensing+ export
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