Twin Pipe System - Air Inlet In Loft Space Ventilation & Clearance - Baxi MULTIFIT Flue Systems Fittings Manual

Fully engaged
mark extension
Air Inlet Terminal 5121791
MUST be in a suitably
ventilated loft space or
compartment, NOT
outside !!
300mm Clearance*
300mm
minimum
© Baxi Heating UK Ltd 2011
Pull Extension back
5mm to allow for
expansion
Support
Brackets
600mm
* The clearance around the air
inlet must extend 300mm in all
directions.
Twin Pipe
System with Air
Duct Inlet in
Loft Space
ASSEMBLING
Engage the male end of the extension or elbow into the female of
the next extension or elbow. Ensure that it is inserted as shown
opposite to allow for expansion & contraction.
Identify the positions of the support clamps and mark the wall or
surface on which they will be mounted. Drill and plug as required.
When all brackets are in place offer the flue up to them, and
secure the two halves of the bracket with the screw.
IMPORTANT: Mounting and securing the flue will be easier if
performed by two people !
When the flue system is in place fully tighten all brackets
systematically, ensuring that no parts are under any strain or
tension.
TWIN PIPE SYSTEM - AIR INLET IN LOFT SPACE
VENTILATION & CLEARANCE
The air duct inlet terminal must be positioned in a suitably
ventilated loft space or compartment. The loft space or
compartment must not be a habitable room, and must be
ventilated ONLY to outside air.
The ventilation provided must be PERMANENT and not subject
to inadvertent blockage.
The loft space or compartment must be isolated from any
habitable area.
There must be a minimum of 300mm from the loft space or
compartment floor to the lower edge of the air inlet grille to
prevent accidental blockage. No obstruction must be placed
horizontally within 300mm of the air inlet.
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