Site Requirements - Baxi MULTIFIT Evacuated Tube Collector Kit Instructions

Noggin
Fig. 18
© Baxi Heating UK Ltd 2011
10.0
10.1
These instructions relate to the installation of the Baxi Solarflo
Evacuated Tube Collector Pitched Roof Mounting. Parts are
provided for fixing to slate or tile roofs. Refer to the parts list
to ensure the correct components are in the pack. All other
equipment must be installed as detailed in the Baxi Solarflo
Installation Guide.
Use only Baxi Solarflo
brackets/mounting systems will invalidate the warranty and may
result in an insecure and dangerous evacuated tube collector
installation.
The mounting brackets must be fixed to the roof structural
members. They must never be fixed to roofing laths. If suitably
positioned structural members are not available or, if they are
of a section that may be weakened by the inserting of the fixing
screws, additional noggins should be inserted between the
structural members. These must be at least the same cross
section as the structural member.
Use only the corrosion resistant fastenings supplied. Holes
through any roof waterproofing materials should be sealed with
an appropriate UV and weather resistant sealant.
10.2
The collectors may only be mounted on sufficiently
load-bearing roof surfaces and substructures. It is essential that
Rafter
the structural load-bearing capacity of the roof and the
substructure must be assessed before mounting the collectors.
Particular attention should be paid to the quality of the
(timber) substructure in terms of the stability of the screw
joints necessary for installing the collector mounting brackets.
Where roof structure is not strong enough noggins must be
inserted to accept anchor screws. The roof structure must be
able to take the wind and snow loads that can occur. The
assessment should also take into account any special features of
the particular site that could lead to increased loads (air jets or
eddy formations, etc).
10.3
It is not necessary to connect collector arrays to the lightning
protection of the building. For installations on metal
substructures at the installation site, authorised lightning
protection specialists must be consulted. The metal pipes of the
solar circuit must be earth bonded to the main earthing circuit
by means of a conductor (green/yellow) with a cross-section of
at least 6mm

Site Requirements

General assembly notes
mounting systems. Use of other
TM
Structure
Lightning protection / Equipotential bonding of
the building
.
2
TM
TM
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