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INSTALLATION OF THE HORIZONTAL AIR/FLUE DUCT (TOP OUTLET)
Fig. 3.9
Rear exit
* = 190 mm ecoMAX
combination and system boilers
* = 176 mm ecoMAX pro
* = 125 mm ecoTEC
Side exit
Fig. 3.10
13 mm
Fig. 3.11
1
2
*
* = 190 mm
* = 190 mm ecoMAX combination and system boilers
* = 176 mm ecoMAX pro
* = 125 mm ecoTEC
87
B
*
A
A
A + 22 mm
• Once the position of the flue exit
hole has been determined, the
hole should be cut through the
wall using a core drill of 125 mm
diameter.
Note: If access can be gained to
the proposed flue exit point from
outside the dwelling, the hole can
be cut with a 107 mm core drill
and the flue external wall seal
fitted from outside the dwelling.
• Measure the distance from the
outside face of the wall to the
centre of the fan outlet on the
boiler.
This is dimension A.
• Cut the air duct and flue duct to
the lengths shown in (fig. 3.11).
• All flue sockets should point
towards the terminal.
• When cutting the air and flue
ducts it is important to remove any
burrs with a file, this ensures easy
fitting of the ducts and prevents
any rough edges from damaging
the flue seals.
Care should be taken not to
scratch the white surface of the air
duct.
• If the installation requires the use
of air/flue duct extensions,
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additional bends or elbows refer
to the sections on pages 34 - 35.
• Secure the air duct sections
together by drilling a 3 mm
diameter hole through the location
hole in the end of the outer air
duct. (Ensure that the drill does
not pierce the inner flue duct).
Secure the air ducts together using
the screw provided.
19
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