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

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Heating engineer
Installation, use and maintenance manual – Caldaria Con export
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Table 3.1
% of glycol, correction factor for pressure drop
Low roughness pipes
(copper, stainless steel and plastic)
Medium roughness pipes
(black and galvanized steel)
% of antifreeze glycol Protection temperature (°C) Correction factor for pressure drop Correction factor for pressure drop
15% -5 1,06 1,08
20% -8 1,08 1,11
25% -12 1,10 1,15
30% -15 1,12 1,19
3.3.2 System filling
Proceed with the filling of the system as follows.
At the first power supply and each time the power
supply is restored, an automatic system venting cycle
is activated. The display will show the code F33 for the
entire duration of the cycle (5 minutes for the first power
supply, 2 minutes for the following ones).
3.3.2.1 Caldaria 35
On the Caldaria 35 it is possible to fill the system directly through
the filling tap, provided that the water supply is connected to
the boiler system filling connection (Ø 1/2" M), as shown in
Figure 1.2 p. 8. If this is not the case, a suitable filling tap must
be provided on the system itself.
1. Slightly loosen the cap of the jolly valve on the circulator (de-
tail 1, Figure 3.5
p. 23) to let the air out of the system.
2. Slightly loosen the cap of the jolly valve placed on the top of
the condensing block (Figure 3.7 p. 24) to release the air
from the top of the boiler.
3. Open the system filling tap (Figure 3.6 p. 23 if the water
supply has been connected to the boiler system filling con-
nection) and let all the air out.
4. Check with pressure gauge (Figure 3.6 p. 23) that system
pressure reaches 1,2 bar (Figure 3.8 p. 24).
5. Open the automatic air vent valves on the system, if any, and
check the air venting process.
6. Make sure that the unit is energized.
7. Send an operating request to the unit for a few seconds. The
circulating pump will be immediately activated.
8. Remove the request before the burner is activated. The cir-
culating pump will continue to circulate the water for the
post-circulation time.
9. If, after the above operations, a decrease in system water
pressure is observed, open again the system filling tap until
the system pressure reaches 1,2 bar.
10. Repeat steps 7, 8 and 9 until the pressure has stabilised (at
least 1,2 bar).
11. After the operation, make sure that the system filling tap (de-
tail R, Figure 3.6 p. 23) is tightly closed.
Once the filling operation has been completed, re-
member to close the cap of the jolly valve on the circula-
tion pump, to avoid water leaks.
To start the circulation pump only, with the boiler pow-
ered, press the button (Figure 6.1 p. 47): the
symbol will appear on the display; after a few sec-
onds turn off the boiler by pressing the button
again (the symbol will appear on the display). The
circulation pump will remain in operation for a few
minutes. Repeat the operation several times until the
pressure of the circuit remains unchanged.
Figure 3.5
Cap of the jolly valve on ciculating pump
1 Cap of the jolly valve
1
Figure 3.6
Pressure gauge and system filling tap
M Pressure gauge
R System filling tap
R
M