JOHNSON CONTROLS
37
SECTION 2 – INSTALLATION
FORM 145.05-NOM7
ISSUE DATE: 10/31/2019
FACTORY-SUPPLIED PLENUM
The unit is provided with an optional acoustical dis-
charge plenum shipped loose for field installation. A
Half Plenum and a Full Plenum option are available
for the LSWU option only. The Half Plenum can be
ordered with factory openings on the two long sides.
The Full Plenum option can be ordered with factory
openings on any of the four sides. Openings in either
plenum can be cut in the field.
The plenums come with the required gasket material
and mounting hardware. See Figure 33 on page 63,
through Figure 36 on page 66 for the proper place-
ment of the plenum on the unit. Use a forklift, slings,
or other suitable lifting means to position the plenum
on top of the unit. Prior to placing the plenum on the
top of the unit attach the foam rubber gasket material
to the bottom of the plenum. Carefully set the plenum
and attach with the provided mounting hardware. If
openings are field cut in the plenum take precaution to
prevent fiberglass from the cut opening from entering
the air stream.
TABLE 7 - SUPPLY FAN VARIABLE FREQUENCY DRIVE WEIGHTS
HP Lbs
5 HP 61
7.5 HP 81
10 HP 81
15 HP 96
20 HP 96
25 HP 115
30 HP 115
40 HP 115
50 HP 190
60 HP 190
NOTES:
1. All weights are in Lbs.
2. Add waterside economizer weight, if selected, to coil section.
3. Add selected fan, motor, and VFD weight to the fan section weight to get total fan weight.
4. Add coil section, fan section and lter section weights together to obtain total unit weight.
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