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7.0 Installation
21
© Baxi Heating UK Ltd 2009
INSTALLATION SEQUENCE
There are 4 main elements to the installation of the
Baxi Bermuda BBU 15 HE:-
• Preparation of pipework & opening
• Inserting the flue into the chimney
• Siting & fixing the boiler
• Fitting the terminal assembly
The sequence in which these are performed may
depend upon various factors beyond the scope of
these instructions. The above list is intended as a
guide based on a typical installation.
It is not necessary to open the firefront pack until
the boiler and flue are installed, and the boiler is
ready to be commissioned. The firefront pack
includes full instructions.
7.1 Initial Preparation
1. Remove the outer carton from the boiler pack.
Discard the packing pieces and remove the fitting kit.
2. Ensure that the base of the builders opening is clean
and level.
3. Complete any pipework installation and routing of
electrical cables within the builders opening that may be
difficult once the boiler is in place.
7.2 Flue System
1. The actual length of flue (as opposed to the vertical
distance from the boiler top to the chimney outlet)
MUST be established before commencing.
2. The flue must have a minimum vertical height of 3m
and have no bends greater than 45°.
NO HORIZONTAL RUNSARE PERMITTED !
3. Depending on the actual flue length it may be
beneficial to shorten the flue at this point to enable
easier handling.
4. Take one of the 60mm lip seals supplied and fit to
the first groove in the flue duct. Also fit the 100mm lip
seal to the air duct. (Figs. 17 & 18).
NOTE: Talcum powder may be used to ease fitting
of the adaptors over the seals. DO NOT use oil,
grease or soap.
5. Unfasten the clips on the boiler adaptor and insert
the end of the flue duct with the seal into the 60mm
socket. Ensure the seal is positioned past the clips, then
engage the clips over the larger diameter ‘rib’ on the
duct (Fig. 19).
6. Repeat the process for the 100mm air duct (Fig. 20)
Fig. 17
Fig. 18
Fig. 19
Fig. 20