Cascade Operation - Flue Gas Header Design - Wolf COB Technical Manual And Installation Instructions

Flue cascade
Flue gas routing with header
Number
Installation
Flue internal diameter
Total flue gas mass flow rate
max. Flue gas temperature
Max. effective building height
The effective heights specified are only valid on the condition that the length of the flue between the individual appliances and
downstream of the last appliance does not exceed 2 m. 325 m was assumed as the geodetic height. If the conditions at the
installation site are different, an individual calculation is required.
Cascade control with header
42
26 Cascade operation - Flue gas
header design
Flue cascades are only suitable in balanced flue operation. They must be designed to
EN 13984-1.
To prevent flue gas escaping, a flue cascade is only permitted with a
tested flue gas damper. Escaping waste gas may lead to asphyxiation
or severe to life-threatening poisoning.
Oil condensing boilers with common flue routing - open flue operation in installation
type B23.
For open flue operation, there must be an aperture in the boiler room that opens to the
outside and has a clear cross-section of at least 150 cm².
Where necessary, adapt the installation examples to the relevant building regulations
and requirements in your country/region. Discuss any questions relating to the
installation, particularly of inspection covers and ventilation apertures (ventilation
generally required above 50 kW output) with your local heating engineer.
2 x 2 x
COB-29 COB-29
DN 110 DN160
g/s 26,6 26,6
°C
m
min. 600 min. 600
max. 1000 max. 1000
3 x 4 x
COB-29 COB-29
Type B23
DN160 DN160
40.0 53,3
76
30
min. 600
max. 1000
2 x 3 x
COB-40 COB-40 COB-40
DN160 DN160 DN160
35,0 52,5 70,0
83
min. 605
max. 2000
DWTK
KM module
3062547_201802
4 x