I've read elsewhere online that the vitreous enamel pipe connecting a stove to a flexible flue liner should not be longer than somewhere between 1-2m (depending where you read). This is to prevent excessive heat loss in the flue gasses and is apparently a sensible recommendation rather than a regulatory requirement.
I have an unusually high inglenook fireplace where the distance from the top of the stove to the top of the inglenook opening is around 3m. Should I insert a section of twin-wall flue between the vitreous pipe and the flexible flue liner or run it all in vitreous pipe?
I have an unusually high inglenook fireplace where the distance from the top of the stove to the top of the inglenook opening is around 3m. Should I insert a section of twin-wall flue between the vitreous pipe and the flexible flue liner or run it all in vitreous pipe?