Flue Systems And Ventilation - andrews COMBIflo 100/300 Installation, Operation And Maintenance Manual

4.12 FLUE SYSTEMS & VENTILATION
In order to minimise the height of this appliance, the fl ue spigot plate assembly is supplied separately and will
have to be installed before fi tting the fl ue system:
• Fully insert (approx 50mm) plastic fl ue pipe section (supplied) into fl ue socket (see below).
• Screw metal air colar onto the top of the fl ue socket with the 8 screws (supplied) (see below)
Th e appliance can be installed using a number of alternative arrangements depending upon the installation
requirements It is delivered with a 130/200mm concentric outlet in the centre. Flue components are ordered
separately as required.
4.12.1 OPEN FLUE (TYPE b
Th is is an open fl ued arrangement where the air for combustion is drawn from the room and because of this the
room must be ventilated. If the Heater is installed in a compartment then it will require both a high level and
a low level vent. Th e fl ue products are discharged either horizontally or vertically using any of the supplied
separate duct components.
Refer to BS 6644 clause 19 and BS 5440 part 2 for detailed recommendations.
Th e room in which an appliance is installed must have a permanent air vent to outside air or to a room which
itself has direct access to outside air.
Installations in boiler rooms require permanent vents for air supply purposes, one at high level and one at low
level, direct to outside air. Th e minimum free areas required are as follows:-
ANDREWS COMBIfl o DRAFT
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23
Low level (inlet)
High level (outlet)
iHE 100 = 376 cm 2
2
iHE 150 = 560 cm
2
iHE 100 = 188 cm
iHE 150 = 280 cm 2
28 GB/IE