Unit Dimensions and Weights
RT-SVX34F-EN
19
Unit Rigging and Placement
Use spreader bars as shown in the diagram. Refer to the
Installation manual or nameplate for unit weight. Refer to
the Installation instructions located inside the control
panel for further rigging information.
1.
Verify that the roof curb has the proper gaskets
installed and is level and square to assure an adequate
curb-to-unit seal.
The units must be as level as possible in order to
assure proper condensate flow out of the unit. The
maximum side-to-side and end-to-end slope allowable
in any application is listed in
Table 2, p. 19
.
WARNING
Heavy Objects!
Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles used to
lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings) may
not be of the same length. Adjust as necessary for even
unit lift. Other lifting arrangements could cause
equipment or property damage. Failure to follow
instructions above or properly lift unit could result in
unit dropping and possibly crushing operator/
technician which could result in death or serious injury.
Figure 12.
Unit rigging
Figure 13.
Center of gravity
X
Y
Z (see note 2)
Table 1.
Minimum operating clearances installation
(horizontal, downflow, and mixed airflow
configurations)
Recommended Clearances
Single Unit
Economizer/
Exhaust End
Condenser
Coil
(a)
Orientation
End/Side
(a) Condenser coil is located at the end and side of the unit.
Service Side
Access
TC*, TE*, YC*
27.5 to 50 Tons
6 Feet
8 Feet
4 Feet
Distance Between Units
Multiple Unit
Economizer/
Exhaust End
End/Side
Service Side
Access
TC*, TE*, YC*
27.5 to 50 Tons
12 Feet
16 Feet
8 Feet
Table 2.
Maximum slope
Cabinet
End to End
(inches)
Side to Side
(inches)
“A” (27.5 - 35 Ton Low Heat)
3 1/2
1 5/8
“B” (27.5 - 35 Ton High Heat)
4
1 5/8
“C” (All 40 and 50 Ton Units)
4 1/2
1 5/8
Note:
Do not exceed these allowances. Correct the improper slope by
building up the curb base. The material used to raise the base must
be adequate to support both the curb and the unit weight.
Table 3.
Center of gravity
Center-of-Gravity (inches)
Unit Model
YC Low Heat
Dimension
YC High Heat
Dimension
TC/TE
Dimension
X
Y
Z
X
Y
Z
X
Y
Z
***330/275* 41
76
33
41
84
33
42
76
33
***360/305* 43
77
33
43
85
33
44
77
33
***420/350* 42
78
33
42
86
33
43
78
33
***480/400* 42
111
35
42
111
35
42
111
35
***600/500* 43
108
35
43
108
35
43
108
35
Note:
Center-of-gravity dimensions are approximate, and are based on the
unit equipped with: standard efficiency coils, standard efficiency
motors, economizer, and throwaway filters.
Note:
Z dimension is upward from the base of the unit.
Example:
Locating the center-of-gravity for a YC-360 MBH High Heat unit with 100%
exhaust.
X = 43 inches inward from the control panel side
Y = 85 inches inward from the compressor end
Z = 33 inches upward from the base
