Installation; Limitations; Location; Rigging Or Handling - Johnson Controls DEM024 Installation Manual

INSTALLATION

LIMITATIONS

These units must be installed in accordance with the following
national and local safety codes.
1. National Electrical Code ANSI/NFPS No. 70 or Canadian
Electrical Code Part 1, C22.1 (latest editions).
2. Local plumbing and waste water codes and other
applicable local codes.
Refer to Table 1 for unit application data and to Tables 5 and 6
for electric heat application data.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer's and/or the customer's
expense.
Size of unit for proposed installation should be based on heat
loss/heat gain calculations made in accordance with industry
recognized procedures identified by the Air Conditioning
Contractors of America.
TABLE 1: UNIT APPLICATION DATA
Voltage Variation
1
Min. / Max.
Wet Bulb Temperature (°F) of Air on
Evaporator Coil, Min. / Max.
Dry Bulb Temperature (°F) of Air on
Condenser Coil, Min.
1. Rated in accordance with ARI Standard 110, utilization
range "A".
2. "T1" transformer primary tap must be moved from the
230 volt connection to the 208 volt connection for low
voltage applications of 208 volt and below.
3. A low ambient accessory is available for operation
down to 0°F

LOCATION

Use the following guidelines to select a suitable location for
these units.
1. Unit is designed for outdoor installation only.
2. Condenser must have an unlimited supply of air. Where a
choice of location is possible, position unit on either north
or east side of building.
3. For ground level installation, a level pad or slab should be
used. The thickness and size of the pad or slab used
should meet local codes and unit weight. Do not tie the
slab to the building foundation.
4. For roof top installation, be sure the structure will support
the weight of the unit plus any field installed components.
Unit must be installed on a level roof curb or appropriate
4
2
208/230V 187 / 253
460V 432 / 504
575V 540 / 630
57 / 72
45 / 125
3
/ Max.
angle iron frame providing adequate support under the
compressor/condenser section.
5. Maintain level tolerance of unit to 1/8" maximum.

RIGGING OR HANDLING

Care must be exercised when moving the unit. Do not remove
any packaging until the unit is near the place of installation. Rig
unit with slings placed under the unit. Spreader bars of
sufficient length should be used across the top of the unit.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS WEIGHT
IS DISTRIBUTED EQUALLY ON THE CABLES SO THAT IT
WILL LIFT EVENLY.
Units may also be moved or lifted with a fork-lift. Slotted
openings in the skid are provided for this purpose. Forks must
pass completely through the base.
TABLE 2: UNIT WEIGHTS
SHIPPING OPERATING
UNIT
WEIGHT WEIGHT
SIZE
(lbs.) (lbs.)
024 338 333
030 340 335
036 360 355
042 348 343
048 384 379
060 500 495
FRONT
"A"
OF
UNIT
26
49 1
8
FIGURE 1: CENTER OF GRAVITY
Refer to Table 2 for unit weights and to Figure 1 for approximate

center of gravity.

CLEARANCES

All units require certain clearances for proper operation and
service. Refer to Figure 5 for the clearances required for
combustion, construction, servicing and proper unit operation.
:
Do not permit overhanging structures or shrubs to
obstruct the condenser air discharge outlet.
343633-YIM-B-0408
CORNER WEIGHTS
(location, lbs.)
"A" "B" "C"
91 80 78
86 83 83
96 84 81
94 83 80
103 90 87
135 117 113
"D"
CENTER OF GRAVITY
"C"
"B"
1
23
1
47
2
4
Johnson Controls Unitary Products
"D"
88
87
93
91
99
130