fakro LWS-P 22/47, Инструкция по установке

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Before you start any work read carefully all instructions, in order to
make sure that you have a proper spot for installation and tools.
Are you able to install attic ladder?
In order to install this attic ladder, you need to know how to cut
wood and use framing square. Not being able to do the above,
installation of this product should be done by a professional
installer (refer to yellow pages).
Will attic ladder satisfy your expectations?
The attic ladder has been designed only for home use. Installation
of this product in commercial buildings can be obstructing to
existing building codes. Before installation of this product consult
with Fire Department or your local building inspector.
Maximum load of the attic ladder is 325 LB.
The attic ladder has been designed to be installed in room where
the ceiling height is in the range described on the packaging. This
product should not be installed if the ceiling height does not fit in
the range described on the product's label. Modifications of the
attic ladder can be dangerous.
Does the construction of your ceiling enables
installation of the attic ladder?
The attic ladder can be installed in buildings with typical wood
framed ceiling (Figure1). You should never cut any of the
constructing elements of the ceiling without prior consultation with
an architect (refer to yellow pages).
The attic ladder should not be installed in chosen spot if there is
one of the following:
ó air ducts
ó metal constructions
ó cement ceiling
ó drop ceiling
If your ceiling has one of the above elements you can not install
the attic ladder. In this case you should seek professional help.
The following instruction describes the installation
method of the attic ladder.
rafter
ceiling joist
rafter
ceiling joist
brace
rafter ceiling joist
WARNING! DO NOT CUT THIS TYPE OF
CONSTRUCTION (FIG. 2, 3) WITHOUT PRIOR
CONSULTATION WITH AN ARCHITECT.
Fig.3. Truss roof frame.
Fig.1. Typical roof construction
Fig.2. Typical construction of the roof with braces connected to the
ceiling joists.
I. IMPORTANT ISSUES TO CONSIDER