- 9 -
Figure. 7 - Coaxial Flue System.
For a twin pipe flue system adapters
C & D
need to
be fitted as per Figure. 8.
Figure. 8 - Twin Pipe Flue System.
The Mital plus and Montreux plus are supplied with a
flue gate that is positioned on the front of the flue
hood. It has two positions (-) & (+) (Figure 9) which is
dictated by maximum flue length.
With the flue gate in position (-) for a coaxial flue
system with one 90º bend and the standard terminal
fitted, the maximum equivalent flue pipe length is 1.5
metres. For a twin pipe system the maximum
equivalent flue pipe for the intake and exhaust with a
90º bend and the standard terminal is 1.5 meters for
each.
For greater flue runs the gate should be moved to
position (+) which then increases the maximum
equivalent flue length for the coaxial flue system to
3.5 metres with one 90º bend and the standard
terminal fitted. For a twin pipe system the maximum
equivalent flue pipe for the intake and exhaust with a
90º bend and the standard terminal is increased to
3.5 meters for each.
For the Mital max & Montreux max the maximum
equivalent flue length for coaxial flue is 3.5 metres
with one 90º bend and the standard terminal fitted.
For a twin pipe system the maximum equivalent flue
pipe for the intake and exhaust with a 90º bend and
the standard terminal is 3.5 meters for each.
In all cases additional 90º bends are equivalent to 1
metre and must be deducted from the maximum flue
length allowed.
Figure. 9 - Boiler Flue Gate.
NOTE : The flues must be installed with a 3º drop
from the boiler to ensure any condense or rain
water drains towards the terminal thus
preventing damage to the boiler.
The Mital and Montreux flue can be installed into a
chimney providing it is of suitable size and
construction and in a accordance with current
regulations. For installing the Mital plus, Mital Max,
Montreux plus and Montreux max boilers into a
chimney the twin flue pipe system must be used.
When cutting coaxial flue it is essential to ensure the
inner exhaust pipe is sufficiently longer than the outer
ventilation pipe to ensure a good seal is achieved.
9.0 Flue and Boiler Accessories
Mital & Montreux
60mm Ø Flue Kit (60º bend, 1m flue, terminal, seals)
90º 60mm Ø bend
1m 60mm Ø flue extension
45º 60mm Ø bend
Mital plus, Montreux plus, Montreux max
Coaxial Flue Kit (90º bend, 1m flue, terminal, seals)
90º coaxial bend
1m coaxial flue extension
45º coaxial bend
General
Programmer Automatic
bypass valve
Increased expansion
vessel 8 dm³
Increased pump
Increased expansion
vessel 12 dm³