28
Rated heating output
kW
90
115
140
180
235
300
405
500
Temperature (at 80 °C boiler
water temperature)
°C
175
Flue gas mass flow rate
–
For natural gas
kg/h
1.5225 x combustion output in kW
–
For fuel oil EL
kg/h
1.5 x combustion output in kW
Required draught
Pa/
mbar
0
Flue gas connection
Nominal diameter
7
mm
180
180
200
200
200
200
250
250
External
7
mm
178
178
198
198
198
198
248
248
Standard seasonal effi-
ciency [to DIN]
(for operation with fuel oil/
natural gas)
At heating system tempera-
ture 75/60 °C
%
90 (H
s
) [gross cv]
Standby loss
q
B,70
%
0.40
0.37
0.32
0.34
0.37
0.29
0.25
0.23
Rated heating output
Boiler with Vitotrans 300
–
Gas operation
kW
98.7
126.1
152.7
197.1
257.2
328.5
435.2
543.7
–
Oil operation
kW
95.8
122.5
148.8
191.7
250.3
319.5
429.5
529.9
Pressure drop on the hot
gas side
Boiler with Vitotrans 300
Pa
105
125
165
185
300
300
355
435
mbar
1.05
1.25
1.65
1.85
3.00
3.00
3.55
4.35
Specification
Specification
(cont.)
5692818
Appendix
