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7 - POSITIONING AND INSTALLATION
The next step will be to check the leveling of the roof curb.
The roof curb is shipped from the factory with its minimum height.
The fi xing screws of the reinforcing angle pieces have to be
removed and all the adjusting screws have to be loosened. At that
time the roof curb can be aligned to correct the angle of the roof.
It is recommended to use a leveler.
The eyebolts and the lifting slings can be used to carry out leveling.
Fixing screw
Adjusting screw
Reinforcing angle piece
When the roof curb is perfectly level, the adjusting screws must
be tightened again and the fi xing screws must be placed.
At this time the transport eyebolts must be removed.
Then, the adjustable angle pieces must be fi xed with 4.8 hexagonal
self-drilling screws (supplied from the factory) or by means of
electric spot welding.
Joist
Adjustable angle pieces
Insulation and waterproof sealing
Following insulation is standard for the roof curb:
■ Self-adhesive rubber gasket of 9 mm around its entire perimeter
and the crossbeams.
Important: Before installing the rooftop unit, the status of this
gasket must be checked. If it is not in good condition it should
be replaced.
Self-drilling
screws
Reinforcing angle piece
Self-adhesive rubber
gasket of 9 mm
■ Thermal insulation of 9 mm on the outer faces of the ducts of
supply and return. It is only placed inside the supply duct in the
case of burner roof curb (in which case the optional insulation
A2-s1, d0 (M0) can be selected).
■ Insulation of 3 mm on the panels that support the outdoor unit
to prevent condensation build-up.
Note: Acoustic and thermal insulation in this part of the roof
curb is recommended.
Upper profi le of 40 mm
for waterproof sealing
When the installation of the roof curb is fi nished, the steel pan
must be insulated again. It is also necessary to completely seal
the roof curb to ensure tightness and prevent water from entering
the building.
Important: These works are the sole responsibility of the installer.
Caution: it is strictly forbidden to get onto the roof curb.
The upstream of the sealing must
always end below the drop edge of
the roof curb.
This sealing must be continuous
around the roof curb. Check all
joints.
Follow the recommendations given in the following pictures:
■ Detail of the roof curb installed on the roof (position C):
Upper profile
of 40 mm for
waterproof
sealing
External insulation
(to be carried
out by the installer)
Sealing upsweep, that must be
performed on all sides of the roofcurb
(to be carried out by the installer)
Insulation of 9 mm
on the ducts of
supply and return
Insulation of 3 mm
on the outdoor unit
Drop edge
Self-adhesive rubber
gasket of 9 mm
(standard)
Insulation of 9 mm on
the ducts of supply
and return (standard)
15
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