Robur Caldaria 100.2 Condensing+ export, Installation, Use And Maintenance Manual

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Heating engineer
22
3
Figure 3.2
Caldaria 100.2 mounting jig
A Outlet Ø 1 1/4" M R Inlet Ø 1 1/4" M
A R
165
250
669
862
672
85,5 249 85,5 155 155
Figure 3.3 Installation of the wall frame and of the boiler
Figure 3.4 Detail of the inclination of the boiler
A Lower bracket
1-1.5°
A
A
3.3 HYDRAULIC CONNECTIONS
The hydraulic installer must make the hydraulic connection cir-
cuit to the heating system.
To facilitate the connection to the system, the boiler is standard
supplied with a kit of hydraulic fittings, located under the fitting
cover.
The installer must provide for the construction of a suitably sized
hydraulic connection circuit, taking into account:
A. of the following indications:
„
Use pipes for heating/cooling systems, protected from
weathering and freezing, insulated for thermal disper-
sion.
„ Sizing of the pipes, according to the standard circulator,
must grant the nominal water flow required for the cor-
rect operation of the heating system.
„
When using glycol water, take this into account when se-
lecting the pipe material and calculating the additional
pressure drop generated by the presence of glycol (Table
3.1 p. 23).
B. of the residual head and pressure drop data reported in
Paragraph 1.4.2 p. 13.
3.3.1
System connections
Connect the water pipes between the boiler and the
system as follows:
▶
Mount the shut-off valves supplied with the boiler on the
outlet and inlet pipes (3/4" angle valves for Caldaria 35 and 1
1/4" fittings with shut-off valves and elbow for Caldaria 55.1
and Caldaria 100.2), after disassembling the fitting cover.
▶
Connect the hydraulic pipes to the water delivery and return
connections of the boiler (Paragraph 1.2 p. 7), equipped
with the appropriate isolation valves, interposing appropri-
ate gaskets on each connection and taking care to avoid the
entry of foreign bodies.
▶
Then connect the heating system terminals to the hydraulic
pipe coming from the boiler.
▶
Fill the hydraulic circuit with water. The air in the circuit and
pipes will be vented by the venting devices located in the
upper parts of the system.
For the calculation of the total water content to be
loaded in the system it is necessary to add the water
content of the boiler (Table 1.1 p. 12) and of the dis-
tribution terminals to the water content in the pipes and
in other elements that make up the system (tanks, hy-
draulic separators, etc.).
In order to ensure correct operation of the unit and avoid
freezing of the water during the winter periods (with
possible damage to the unit and the system), it is nec-
essary to add antifreeze glycol to the water in a quantity
proportional to the minimum winter temperatures of
the installation site (see Table 3.1 p. 23).
Connect the outlet of the boiler safety valve (Paragraph
1.3 p. 9) to a suitable drain. The manufacturer is not li-
able for any damage caused by the opening of the safety
valve in the event of system overpressure.