11
4.1.3 - Installation of the rectangular duct outlets
Supply and return duct outlets (connecting pieces) must be
attached to each front fastening support of the 4GM units.
These are separate, and complete leak-tightness between
the connecting pieces and the rectangular ducts is easily
ensured before they are installed.
Once the connecting pieces are installed on the ducts they
only need to be fixed to the front fastening supports, using
the two M5 screws supplied with the connecting pieces. For
the assembly method see the diagram below.
Duct outlets
(connecting pieces)
Front
fastening
support
Screws M5
4.2 - 42GM installation
4.2.1 - General
The 4GM is generally the most important system element
to be installed when all else is done. There are reasons
for this:
•
Avoidance of damage to the units while heavy work is
still in progress
•
Keeping work areas as free of clutter as possible.
When the site is ready for the modules - the front fastening
support is firmly fixed to the concrete slab, the ducts are
connected to the front support, the rear suspension rail is
firmly fixed to the concrete slab, the water manifolds, shut-
off valves and air vents are in place on their connection
spigots, the condensate drain piping is installed, electrical
installation is complete - only a few minutes are needed to
install the module, make the water and electrical connections
and connect the condensate drain together with the non-
return valve (see Fig. 4).
Adequate filter access and manoeuvring space will have
been provided (refer to the dimensional drawings).
WARNING: Do not use the water pipes or the electrical
cables as handles for manoeuvring the modules. They may
suffer serious damage.
A hydraulic lift and a folding ladder will facilitate the task
of fixing the 4GM unit. Use a support block (e.g. made of
wood or steel, dimensions 96 x 900 mm), with the height at
the front 10 mm higher than at the back to allow installation
of the 4GM (see Fig. 1).
Fig. 1
Support block
