Wall lead through pipe for central heating boiler, comprises main tube with end tube for discharging fumes in non horizontal direction

摘要

The pipe (30) comprises a main tube (31) and an end tube (32) and the exit end of the main tube presents an imaginary end surface (50) extending at a slanting angle relative to the main tube length axis (33) and the inlet end of the end tube presents an imaginary end surface extending at a slanting angle relative to the end tube length axis (34). The exit end of the main tube is connected to the inlet end of the end tube. Independent claims are also included for the following: (A) Method for changing the orientation of the end tube relative to the main tube in this lead-through pipe by loosening the main and end tubes, rotating them about their length axes relative to each other and tightening them again; and (B) Discharge system comprising the lead-through pipe, an exhaust gas discharge pipe (10) and an air supply pipe (20), in which part of the lead-through pipe is located by one end of the discharge pipe.