25
Design, Installation & Assembly
Frequently Asked Questions
so replaced. The brickwork pointing and the flashings should be checked to ensure they are
weather tight and repaired where necessary.
CAN FLUE LINER BE USED ON CONDENSING APPLIANCES?
We recommend the use of TecnoFlex Plus on condensing Gas and Oil appliances. The smooth
inner liner allows for the swift drain down of condensates to a suitable drain point at the base
of the vertical system. TecnoFlex Plus can be used on appliances with a maximum pressure of
200Pa. The liner should be used in combination with connecting flue pipe and fittings, which
have been tested and approved to BS EN1856-2. An acid resistant sealant, such as Rotempo or
equivalent should be used to seal the joint between the flexible liner and the screw fit adaptor.
THE CHIMNEY TO BE LINED IS VERY TALL, CAN LENGTHS OF FLUE LINER BE JOINED?
It is recommended that flexible flue liners be installed in continuous lengths without joiners.
Schiedel Chimney Systems can supply all flue liners in specific lengths on drums or in pack form
upon request. On TecnoFlex Plus installations, joiners are
only
permitted where the chimney
liner length exceeds the maximum length available and details of the installation are agreed in
advance, in writing, in compliance with product warranty conditions.
MULTI-FUEL APPLICATIONS
Multi-Fuel refers to an appliance which may be used to burn either seasoned wood, with a
maximum moisture content of 20%, or approved solid fuels. These fuels must
not
be mixed, as
this increases the risk of deposits being built up in the liner.
DO I REQUIRE AN APPLIANCE CONNECTOR TO FIT THE FLEX TO THE APPLIANCE
SPIGOT?
In the event of connecting directly to the appliance i.e a gas fire with back boiler within the
chimney stack, it will generally be unnecessary to use an appliance connector. When making a
connection to a connecting flue pipe in another product type, then the appropriate connector
to/from flexible would be used. In all cases, a gas tight joint must be ensured.
WILL THE FLUE LINER BE OK TO USE AFTER A CHIMNEY FIRE?
The flue liner could be damaged under the conditions of a chimney fire, and must
always
be
inspected by a suitably qualified individual (e.g. HETAS registered installer and replaced as
necessary), before using the appliance or fire again.
