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MI-Flues System 7 Vitreous Enamelled Stove Pipe
APPROVALS
COMPONENTS
INSTALLATION
Mi-Flues System 7 vitreous enamelled stove pipe
has been specifically engineered to give an authentic
visual look, whilst at the same time being
manufactured using the latest technology to ensure
years of trouble free use.
All enamelled components are made from 1.2mm
thick zero carbon steel. All joints are fully welded
which provides an excellent gas sealed joint and
offers minimum resistance to flue gas flow.
The system then has two coats of Class A quality
enamel applied to both the inside and the outside of
the pipes and accessories.
Components have been designed to be installed
quickly, safely and simply. The system comprises of
plain pipes, pipes with high temperature ceramic
sealed doors, bends, tees complete with cleaning
inspection caps, appliance adaptors and wall
rosettes.
Mi-Flues System 7 should be fitted at least four times
the diameter of the pipe away from any combustible
materials.
All sockets (female end) should be upward, with the
male end dropping into the socket
(see illustration below).
This ensures that no condensate
can escape and spoil the
appearance of the finished
installation.
The diameter specified by the
appliance manufacturer dictates the
chimney diameter and this should
never be reduced.
Mi-Flues recommend a maximum
run of 1.8m of System 7.
In all cases the product must be
installed in accordance with Local
Building Regulations Document J and the
manufacturers installation instructions.
APPLICATION
Mi-Flues System 7 stove pipe should only be used to
connect from the appliance into an existing lined
chimney, or to our System 2 twin wall insulated
stainless steel chimney, using an appropriate adaptor
(as per illustrations on page 8).
System 7 flue should not be used externally or
should not be used to line an existing chimney.
INTRODUCTION
PRODUCT DESCRIPTION
JOINT ASSEMBLY
The male end of the pipe should sit inside the spigot
outlet of the stove and should be sealed with Mi-Flues
high temperature sealant (rated to 1000°C) or fire
cement in accordance with appliance manufacturers
guidelines.
There is a hole in the spigot end of the pipe. This hole
is used in the manufacturing process and is in no way
used for installation purposes.
If the fit is quite loose it is possible to pack the joint with
fire rope prior to using the high temperature sealant
(rated to 1000°C) or suitable fire cement.
Produced in zero carbon steel, it has two coats, both
internally and externally, of superior class A quality
enamel applied.
The system is available in five standard diameters
100mm, 125mm, 150mm, 175mm and 200mm.
Mi-Flues System 7 is available in three standard
colours, Matt Black, Gloss Black and Brown.
System 7 is not suitable for condensing applications.
Locking Clips are available to
suit 100mm, 125mm and
150mm System 7 pipes. They
are recommended on runs of
more than three components.
Mi-Flues do not recommend cutting vitreous enamel
pipes. This is because it is the vitreous enamel
coating that protects the mild steel pipe underneath
from corrosion and attack from combustible deposits.
Once the pipe is cut the mild steel will be exposed.
Adjustable lengths are available to assist in
achieving an exact required length.
Mi-Flues System 7 should not be used on Insert
Stoves. If a connecting flue pipe is required for an
Insert Stove Mi-Flues System 1 or Mi-Flues Insert
Stove kits should be used.
Flue Gas
Direction
To install the locking clip fit the male end of the pipe
into the socket end of the pipe as shown below. Seal
the joint using Mi-Flues high temperature sealant (rated
to 1000°C) or fire cement. Once sealed, fit the locking
clip around the pipe ensuring connection is made with
both pipes. Once in correct position secure the
locking clip by tightening the tensioning screw with a
suitable allen key or flat head screw driver.
Socket (Female)
Male
Mi-Flues System 7 conforms to:
BS 1344 Part 1 Thermal shock resistance
BS 1344 Part 7 Heat resistance
BS EN 14483 Part 1 Acid resistance
BS 6999 Specification for VE low carbon steel flue
pipes
EN 1443:2003 Chimney General Requirements
EN1856-2 T600 N1 D Vm L80180 G(**)
Note: ** 4 x diameter of the flue