Examples:
four elbows 90
o
+ 4m straight pipes, or two elbows 90
WARNING! the simultaneous operation of an open-flue firebox (e.g. an open-flue fireplace) together with the heat
pump causes a dangerous environmental pressure drop. This could cause the backflow of exhaust gas into the
environment itself.
Do not operate the heat pump together with an open-flue firebox.
Use only sealed-chamber fireboxes (approved) with a separate duct for combustion air.
Keep the doors to the boiler room closed and hermetically sealed if they do not have a combustion air supply in
common with inhabited areas.
o
+ 8m straight pipes, four elbows 45
14
.
o
+ 6m straight pipes