Viessmann Vitoplex 200 SX2A Installation Instructions For Contractors page 27

Specification
(cont.)
Rated heating output
Flue gas parameters *2
Temperature (at 60 °C boiler
water temperature)
At rated heating output
■
At partial load
■
Temperature (at 80 °C boiler
water temperature)
Flue gas mass flow rate
For natural gas
■
For fuel oil EL
■
Required draught
Flue gas connection
Standard seasonal effi-
ciency [to DIN]
(for operation with fuel oil)
For heating system tempera-
ture 75/60 °C
Standby loss q
B,70
Rated heating output
Boiler with Vitotrans 300
Gas operation
■
Oil operation
■
Pressure drop on the hot
gas side
Boiler with Vitotrans 300
Total length
Boiler with Vitotrans 300
excl. burner
Values for calculating the size of the flue system to EN 13384, relative to 13.2 % CO
*2
natural gas.
Flue gas temperatures as actual gross values at 20 °C combustion air temperature.
The details for partial load refer to an output of 60 % of rated heating output. If the partial load differs (depending on operat-
ing mode), calculate the flue gas mass flow rate accordingly.
kW 90 120
°C
°C
°C
kg/h
kg/h
Pa/
mbar
Ø mm 180 180
%
% 0.40 0.35
kW 98.7 131.4
kW 95.8 127.8
Pa 125 145
mbar 1.25 1.45
mm 1990
150 200 270
180
125
195
1.5225 x combustion output in kW
1.5 x combustion output in kW
0
200 200 200
89 (H ) [gross cv]
s
0.30 0.30 0.25
164.3 219.0 295.6
159.8 213.0 287.5
185 285 280
1.85 2.85 2.80
2290
for fuel oil EL and 10 % CO
2
350 440
200 250
0.25 0.22
383.3 478.7
372.7 466.4
410 385
4.10 3.85
2570 2950
for
2
560
250
0.20
608.9
593.5
505
5.05
27