Viessmann vitodens Technical Manual page 14

1.2 Specification
Vitodens 333
333
Rated output range
T /T = 50/30 ºC
V R
T /T = 80/60 ºC
V R
*1
Flue gas values
Flue gas value group to G 635/G 636
Temperature (at a return temperature of 30 ºC)
at rated output
at partial load
1
Temperature (at a return temperature of 60 ºC)
Mass flow rate
for natural gas
at rated output
at partial load
for LPG
at rated output
at partial load
CO content
2
Available draught
Standard efficiency at
T /T = 50/30 ºC
V R
T /T = 80/60 ºC
V R
Average condensate volume
for natural gas and
T /T = 50/30 ºC
V R
T /T = 80/60 ºC
V R
Condensate connection
Flue outlet
Ventilation pipe
*1
Calculation values for sizing the flue gas system to EN 13384.
Flue gas temperatures measured as gross values at 20 ºC combustion air temperature.
The details for partial load refer to an output of 30 % of rated output. Calculate the flue gas mass flow rate accordingly when the
partial load differs from that stated above (subject to the burner mode).
The flue gas temperature at a return temperature of 30 ºC is decisive for sizing the flue gas system.
The flue gas temperature at a return temperature of 60 ºC is used to determine the application range of flue pipes with maximum
permissible operating temperatures.
" For the specification of Viessmann modular components, see the folder Vitotec 1.
14
kW
kW
ºC
ºC
ºC
kg/h
kg/h
kg/h
kg/h
%
Pa
mbar
%
%
litres/day
litres/day
Hose coupling
∅ mm
Internal ∅ mm
External ∅ mm
4.5 12.0/16.0
4.0 11.0
VITODENS
6.6 26.0
6.0 23.7
G /G
52 51
45
35
70
47.3
11.8
48.4
11.5
100
1.0
109
104
11 13
8 10
20 24
80
125