MCZ Hydrotherm 70 - Manual (Page 12)

INSTALLATION AND USE MANUAL
Chapter 2
page
12
Theoretical notions for installation Technical service – MCZ GROUP S.p.A. all rights reserved - Reproduction prohibited
 must be suitably sized to accommodate the draught/smoke
disposal requirements necessary for the correct functioning of
the product (EN13384-1).
 It must preferably have a circular interior section.
 If pre-existing and previously used, it must be cleaned.
The flue pipe is of primary importance for the correct
functioning and safety of your fireplace stove.
2.5.1. Examples of flue pipes
Square or rectangular section flue pipes must have rounded internal
corners with radius not less than 20mm. For the rectangular section,
the ratio between internal dimensions must be ≤1.5.
The sections/lengths of the flue pipe shown in the technical data table
are guidelines for correct installation. Any alternative configurations
must be suitably sized in accordance with EN13384-1.
The smoke duct should be equipped with a solid material collection
chamber at the mouth of the smoke duct to be easily opened with an
airtight door.
IMPORTANT !
In the event of doubt on your chimney flue
operations or that its dimensions are different from
those recommended, we highly suggest an
authorised MCZ technician inspect and measure
chimney flue performance (micro-gauge
measurements)
MCZ s.p.a. shall not be held liable for poor operation
of the fireplace stove that is due to a flue pipe of
improper size or installation that does not comply
with provided requirements.
Stainless steel 316 flue
pipe with dual chamber
insulated with ceramic wool
or equivalent resistant to
400°C.
EXCELLENT
Flue pipe in refractory brick
with insulated double wall and
external coat of cement mix
lightened with honeycomb
material such as clay.
GOOD
Traditional square section
clay flue pipe with insulating
hollow inserts.
GOOD
Avoid flue pipes with internal
rectangular sections whose
larger side is double the smaller
such as 20x40 or 15x30.
AVERAGE