Carrier 020-093 Installation, Operation And Maintenance Instructions page 14

7 - POSITIONING AND INSTALLATION
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 roof curb, must be used.
Standard roof curb
Centre of gravity
Models
Weight
(kg)
X
020 a 047 145 864
052 a 052 205 1422 1100
070 a 099
237 1757 1102
These slings will be hooked on the eyebolts fi tted to the roof curb.
Check that the eyebolts are perfectly screwed in before attaching
the slings.
Eyebolts
Y
After the placing of the roof curb, it is necessary to remove the
eyebolts. Put the eyebolts back in case of transport.
Note: 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.
Installation on the roof
First of all, an opening in the steel pan has to be prepared for the
installation of the roof curb. The roof curb will be supported on
some joists placed for this purpose in the roof.
Joists
L2
The dimensions of this opening should be as follows:
Dimensions (mm)
020 a 047
052 a 052
070 a 099
14
Roof curb with burner
Centre of gravity
Weight
(mm) (mm)
(kg)
Y Z X Y
870 194 284 885 881
202 411 1214 1277 344
200 483 1492 1289 348
Safety grille
Z
X
L1
L1 L2
1968 1485
2738 1934
3391 1934
It is mandatory to use all required PPE for work at
height.
Place the roof curb on the joists and check that it has been
positioned in the right direction.
Position A
Z
338
Position C
Note: Position A is best suited for gas burner roof curb. In this
position it is easier to access the burner register. It is also the
most optimal solution in areas where snow can accumulate.
Next, the roof curb must be secured. To do this, the adjustable
angle pieces of the roof curb must be fi xed to the joists using self-
drilling screws or electric spot welding.
Tightening bolts
with blind rivet
nuts (M10)
Adjustable
angle piece
The following image shows the position of the drills in the angle
pieces (Ø 18mm):
B
Dimensions (mm)
020 a 047
052 a 052
070 a 099
Position B
Supply
Return
Return
Supply
Position D (NO)
100
50
C B
A
A B C
1943 922 0 1460
2713 1307 0 1909
3366 1250 766 1909
Self-drilling
screw or
spot weld
Joist
E D
D E
1360
1809
1809