14
7 - POSITIONING AND INSTALLATION
Installation on the roof
The following picture shows the roofcurb elements that enable
adjusting and levelling it:
The roofcurb will be supported on some joists placed for this
purpose in the roof (check the location of ducts for the air supply
and air return).
Joists
A
B
A
B
Joists
50FF/FC
roofcurb
A
(mm)
B
(mm)
020 to 047 1968 1485
052 to 052 2738 1934
070 to 093 3391 1934
Slide the four adjustable angle pieces below the steel pan on top
of the joists.
The adjustable angle pieces are fi xed to the joists using self-
tapping screws or electric spot welding.
Check that the adjustable angle pieces are in the correct position
on the joists before the roofcurb is fi tted. Next, provisionally attach
the adjustable angle pieces to the joists with one or two self-tapping
screws per angle part.
Handling
For transport and lifting up to the roof using a crane, a rocker arm
as well as approved slings, both suitable for the dimensions and
weight of the roofcurb, must be used. These slings will be hooked
on the eyebolts fi tted to the roofcurb.
Check that the eyebolts are perfectly screwed in before attaching
the slings.
Reinforcing angle piecesAdjusting angle pieces
100
50
Joist
Self-tapping screw
or spot weld
Tightening bolts
with blind rivet
nuts (M10)
Adjustable
angle piece
After the above operation remove the four reinforcing angle pieces
to position them in the roofcurb. Attach them to the roofcurb with
two screws without screwing them completely.
Reinforcing angle piece
Tightening screws
JoistReinforcing angle piece
Eyebolts
After the placing of the roofcurb, it is necessary to remove the
eyebolts. Put the eyebolts back in case of transport.
Note: All roofcurb are supplied with a return safety grille intended
for plenum installations. For installations with ducted return, the
grille must be removed prior to place the machine on the roofcurb.
Safety grille
Important: Check that the roofcurb is installed in the
right direction.
Lay the roofcurb. The reinforcing angles prevent the roofcurb from
moving. The roofcurb should slide into the 4 adjusting angle pieces.
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