RT-SVX072A-EN
31
Table 13. Pitch pocket dimensions — S*HL
Tonnage
“A” Dimension "B" Dimension
20, 25 & 30
4' 5–9/16" 5–9/16"
24, 29, & 36
6' 9–11/16” 5–1/2”
40–75
9' 5–11/16" 5–1/2"
Note: For all unit functions (SAH_, SEH_, SFH_, SLH_, SSH_, and SXH_).
Unit Rigging and Placement
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NNoottee:: Use spreader bars as shown in the diagram.
Refer to “Weights,” p. 28 or the unit nameplate
for the unit weight. Refer to the Installation
Instructions located inside the side control panel
for further rigging information.
1. To configure the unit Center-of-Gravity, utilize
TOPSS or contact the local Trane sales office.
2. Attach adequate strength lifting slings to all four
lifting lugs on 20-36 ton units and all six lifting lugs
on the 40-130 ton units. The minimum distance
between the lifting hook and the top of the unit
should be 7 feet for 20-36 ton units and 12 feet for
40-130 ton units. Figure 11, p. 32 illustrates the
installation of spreader bars to protect the unit and
to facilitate a uniform lift. lists the typical unit
operating weights.
3. Test lift the unit to ensure it is properly rigged and
balanced, make any necessary rigging adjustments.
Slightly pitch the unit (no more than 1 ft) so the
condenser end is above the return end of the unit.
This will aid in aligning the unit with the roof curb
described in Step 5Installation_Unit Rigging and
Placement.
4. Lift the unit and position it over the curb and
pedestal. These units have a continuous base rail
around the air handler section which matches the
curb.
IImmppoorrttaanntt:: For replacements, remove old gasket
from the roof curb and place new
gasket material on curb. See
“Installation of New Units,” p. 64 to
determine gasket material length using
roof curb dimensions.
5. Align the base rail of the unit air handler section
with the curb rail while lowering the unit onto the
curb. Make sure that the gasket on the curb is not
damaged while positioning the unit. (The pedestal
simply supports the unit condenser section)
A cross section of the juncture between the unit and
the roof curb is shown below.
IInnssttaallllaattiioonn
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