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7 - POSITIONING AND INSTALLATION
Air ducts connections
For units with vertical airfl ow, the ducts must be connected to the
profi les from underneath the roof curb.
In order to carry out the air ducts follow the recommendations in
the paragraph 9.4 "Air ducts connections".
The thickness of the sheet metal profi les to connect the discharge
and/or return ducts to the roof curb are shown in the following
tables:
Standard roof curb
Dimensions (mm)
A
020 to 047
50
Standard
052 to 062
50
roof curb
070 to 099
50
Burner roof curb
Dimensions (mm)
A
020 to 047
50 797 373 0 275 631 52 155 770 89
Burner
052 to 062
50 1229 470 376 207 619 85 155 1219 101
roof curb
070 to 099
50 1570 470 373 126 704 85 155 1491 198
B
C
D
798
321
619
1234
470
745
1575
470
715
B
C
D
E
F
G
H
Important: All roof curb 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
roof curb. This grille is fastened using 4.8 self-tapping hex screws.
Positioning the unit above the roof curb
Once the previous work has been carried out, the rooftop unit can
be positioned above the roof curb with the help of a crane. For
the handling of the unit, the recommendations given in chapter 5
should be followed.
Suction cup handles can be used to guide this operation.
E
243
410
410
I
J
Safety grille
The machine fits perfectly on the
roof curb, no connecting element is
necessary.
17
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