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VARINO GRANDE 350 - 600
We reserve the right to make changes to dimensions and construction 10 Edition 10.07.2015
© Copyright YGNIS AG CH-Ruswil
0
10
20
30
40
50
60
70
80
0 20 40 60 80 100
qF (%)
T (°C)
60 / 80°
30 / 40°
30/40°, DIN4702-8
Flue gas temperature-diagram of a VARINO GRANDE as function of the load
4.5. Correction values for different operating conditions
4.5.1. Stand-by loss correction values
Average temperature difference *
Dtm
°C
30
40
50
60
70
Stand-by loss correction
DqB
%
-40
-20
± 0
20
40
* Average temperature difference = Average boiler water temperature minus ambient air temperature
Average boiler water temperature = Average of supply and return temperature
4.5.2. Nominal load related to altitude
80
85
90
95
100
105
0 500 1000 1500 2000
H (m)
qF (% nominal)
The actual correction may be smaller than this, since a margin has been allowed for barometer fluctuations.
This also takes into account using the optional intake duct for external air intake (max. pressure loss according to
chap. 4.4).
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