158
Note regarding the gas supply pressure
If the gas supply pressure is higher than the maximum
permitted value, install a separate gas pressure gover-
nor upstream of the system.
Note regarding connection values
The supply values are only for reference (e.g. in the
gas contract application) or for a supplementary, rough
estimate to check the volumetric settings. Due to fac-
tory settings, the gas pressure must not be altered
from these values. Reference: 15 °C, 1013 mbar
(101.3 kPa).
Note regarding flue gas parameters
Calculation values for sizing the flue system to
EN 13384. Flue gas temperatures as actual gross val-
ues at 20 °C combustion air temperature.
■
The flue gas temperature at a return temperature of
30 °C is significant for the sizing of the flue system.
■
The flue gas temperature at a return temperature of
60 °C is used to determine the application range of
flue pipes with max. permissible operating tempera-
tures.
Specification
Specification
(cont.)
5678 044 GB
Appendix
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
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