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Flue systems
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11.1.3 Flue gas parameters Suprapur – single boiler KBR ...
11.1.4 Flue gas parameters Suprapur – factory-prepared 2-boiler cascade MKB ...
11.1.5 Sizing plastic flue systems (open flue)
When sizing the flue system, carry out a calculation of
the system based on the intended flue routing during the
engineering stage.
These examples are only for estimating the maximum
heights that can be achieved under the given conditions.
In the case of alternative conditions and to finalise the
sizing, calculate the flue system in accordance with
current technical rules and agree the result with the
local flue gas inspector [where appropriate].
Rated output Rated heat
input
Flue
outlet
Available
draught
Flue gas
temperature
CO
2
content
Flue gas mass
flow rate
System
temperature
Boiler
size
Full
load
Partial
load
Full
load
Partial
load
Full
load
Partial
load
Full load/
partial
load
Full
load
Partial
load
[kW] [kW] [kW] [kW] [mm] [Pa] C] C] [%] [g/s] [g/s]
50/30 °C
120 120 31 116 29 DN 160 100 <56 <35 9.1/9.3 53.7 13.2
160 160 42 155 38.8 DN 160 100 <54 <35 9.1/9.3 71.7 17.7
200 200 52 193 48.3 DN 200 100 <55 <35 9.1/9.3 89.3 21.8
240 240 63 232 58 DN 200 100 <55 <35 9.1/9.3 107.4 26.3
280 280 73 271 68.8 DN 200 100 <57 <35 9.1/9.3 125.4 30.9
80/60 °C
120 113 28 116 29 DN 160 100 <75 <57 9.1/9.3 53.7 13.2
160 150 38 155 38.8 DN 160 100 <75 <56 9.1/9.3 71.7 17.7
200 187 47 193 48.3 DN 200 100 <75 <58 9.1/9.3 89.3 21.8
240 225 57 232 58 DN 200 100 <75 <56 9.1/9.3 107.4 26.3
280 263 67 271 68.8 DN 200 100 <75 <58 9.1/9.3 125.4 30.9
Tab. 44 Flue gas parameters Suprapur – single boiler with consideration of the condensation proportion
Rated output Rated heat
input
Flue
outlet
Available
draught
Flue gas
temperature
CO
2
content
Flue gas mass
flow rate
System
temperature
Boiler
size
Full
load
Partial
load
Full
load
Partial
load
Full
load
Partial
load
Full load/
partial
load
Full
load
Partial
load
[kW] [kW] [kW] [kW] [mm] [Pa] C] C] [%] [g/s] [g/s]
50/30 °C
240 240 31 232 29 DN 200 50 <55 <35 9.1/9.3 109.4 10.1
320 320 42 310 38.8 DN 200 50 <55 <35 9.1/9.3 140.4 12.9
400 400 52 386 48.3 DN 250 50 <55 <35 9.1/9.3 175.6 17.9
480 480 63 464 58.0 DN 250 50 <55 <35 9.1/9.3 212.0 19.2
560 560 73 542 67.8 DN 250 50 <55 <35 9.1/9.3 251.8 23.7
80/60 °C
240 226 28 232 29 DN 200 50 <75 <55 9.1/9.3 107.6 11.5
320 300 38 310 38.8 DN 200 50 <75 <55 9.1/9.3 140.4 14.1
400 374 47 386 48.3 DN 250 50 <75 <55 9.1/9.3 178.6 18
480 450 57 464 58 DN 250 50 <75 <55 9.1/9.3 214.8 20.8
560 526 67 542 67.8 DN 250 50 <75 <55 9.1/9.3 250.8 27.8
Tab. 45 Flue gas parameters Suprapur - factory-prepared 2 boiler cascade with consideration of the condensation
proportion
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