Older inserts with rectangular or oval openings were usually designed to be used without a liner, as they released enough heat to the chimney that a liner was not necessary.
Class A chimney is only used in a free standing application where no masonry chimney is present.
Images from the test can be seen below.
SnapLok is a world leading, extremely high quality rotary power sweeping system and the only Award Winning rotary power sweeping equipment, actually awarded by chimney sweeps and stove installers.Regular chimney inspections are always recommended.The SnapLok range includes flexible power sweeping rods made of solid nylon in 8mm, 12mm, 15mm, 18mm and 22mm in thickness and with stainless steel ferrules/fittings, various sized rotary heads and brushes, birds nest removers and tar/creosote removal heads, plus a range of adaptors for.Wood has different characteristics - certain types of wood release more heat than others.This tar like substance is called creosote and is found nearly everywhere in a wood heating system.The rotary cleaning kit can also be used as duct cleaning rods.All these rods will connect to each other no matter what size, Also the brush heads willl connect to any rod.The secondary kit includes the adapter needed to connect the liner to the cast iron boot, as well as the top plate and cap for the chimney.A stove room ventilator makes a simple job of providing this low income rebate for electricity ventilation, and at the same time ensures that it is waterproof, pest-proof, and wind-proof.
It is the next generation of power sweeping technology, providing state-of-the-art technology at an affordable price.When venting up a masonry chimney, only an insulated liner is needed.Hardwoods will burn longer.You are indeed correct that installing a liner within your masonry chimney is the best way to proceed.I believe I need a Class A insulated chimney pipe for this application, but I don't know if I also need a chimney liner.The Results, the Chimney Cleaning Log has been independently tested omni Test Laboratories.Rotary Power Sweeping has it's own Chimney Sweep Advanced Training Centre and Academy which offers advanced chimney sweep training courses for basic and experienced chimney sweeps, which includes SnapLok rotary power sweeping equipment etc, these courses are delivered by experienced 'day to day' approved chimney.The Chimney Cleaning Log contains a mixture of special additives that are dispersed during the process of burning.