Wolf COB-2 - Installation of the Air;Flue Gas Lines

Planning
20 | WOLF GmbH 3066501_201910
4.6.1 Installationoftheair/uegaslines
Air/uegaslines-general
Discuss any installation questions, particular those relating to the installation of inspection covers and
vents, with the local ue gas inspector.
Route the air/ue gas lines over the heat generator in such a way that the displacement device can be
removed.
Minimum clearance above the heat generator:
– COB-2-15/-20/-29: 30 cm
– COB-2-40: 40 cm
Air/uegasroutingviaroof(typeC33x)
Routing air / ue gas above the roof is permitted under the following conditions:
– Heat generator is located in the attic.
– Heat generator is located in a room where the ceiling is also the roof.
– There is nothing above the ceiling but the roof structure.
If there is nothing above the ceiling but the roof structure, the following applies for the combustion air
supply and the ue from the top edge of the ceiling to the roof skin:
Fire resistance Measures
Required Clad any lines with non-combustible materials which also have this re resistance.
No specic
requirements
Lines must be laid in a shaft made of non-combustible rigid materials or a metal
conduit (mechanical protection).
Air/uegasroutingviashaft
If multiple oors are bridged by the lines for the combustion air supply and the ue, these lines must
be routed in a shaft outside of the installation room. If this is not done, there is no guarantee of any
mechanical protection. Fire resistance must be guaranteed for at least 90 minutes.
Air/uegasroutingviaexistingshaft
Cleaning and inspection not possible from the outlet.Make sure that the following clearance is maintained
between the cleaning and inspection opening in the shaft/channel and the front edge of the ue:
– 2 • diameter of ue
– Maximum 350 mm
► Provide sufcient cleaning and inspection apertures.
Ducts which were previously connected to an oil or solid fuel boiler must be cleaned by the chimney
sweep so that no dust remains. If the combustion air is drawn in via the shaft, the prior use can cause
odours in the boiler room.
Dust-free cleaning not possible:
► Use separate air supply.
Securingtheair/uegasroutingoutsideoftheshaft
WARNING
Risk of falling parts!
Physical injury and damage to objects.
► Lines must be secured with brackets every 150 cm.
Secure the air/ue gas routing or ue outside ducts with spacer pipe brackets to prevent the pipe joints
being pulled apart.
Minimum clearance of 50 cm:
– From the connection to the heat generator
– Before or after bends
Protection in winter
WARNING
Risk of water vapour becoming ice and falling off!
Physical injury and damage to objects.
► Use appropriate measures on site to mitigate this risk, e.g. installation of a suitable snow guard.
At low outside temperatures, the water vapour contained in the ue gas may condense and freeze on the
air/ue gas routing system.