We also recommend you have a flue clean-out door located at least two feet (2’) below your thimble for easy cleaning of the system. This door should be made as airtight as possible. It is the consumer’s responsibility to ensure the chimney system is safe and in good operating condition. The manufacturer will not be held responsible for an accident attributed to a unit connected to a faulty chimney system.
2.Pre-Manufactured Flue System: In the past few years pre-manufactured flue systems have become very popular, because this type system is easily installed and, when done correctly, is very safe. There are many pre-manufactured flue systems on the market, and when making your choice it should be U.L., B.O.C.A. or I.C.B.O. approved. Any of these systems are constructed of the proper materials and meet the proper safety standards. Your local dealer normally handles an approved brand of flue pipe. There are two very popular methods for installation of this type system.
The first, most popular and least expensive is through the ceiling and out the roof. This is the most direct route and creates a good draw because it requires less pipe. It is less expensive because insulated pipe is needed only from the ceiling to the roof and above -- single wall 24 gauge or thicker pipe is used from the unit to the ceiling if you maintain the eighteen inches (18”) clearance from all combustible material.
The second method for installing a pre-manufactured system is to exit through the wall and run the system vertically up the outside of the structure. This method is more expensive because more insulated pipe is required -- you must use insulated pipe through the wall and up the outside of the structure. In either installation, proper clearances to combustibles should be maintained. Your flue pipe manufacturer furnishes a wall thimble or ceiling support box and, when installed properly, the correct clearances are achieved. If you are unable to install this type system your local dealer may be able to recommend a qualified contractor for this installation. It is the customer’s responsibility to ensure that his system is installed properly and is in good operating condition. The manufacturer will not be responsible for an accident caused by a unit connected to a faulty flue system.
