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UNIT SUPPORT
NOTE: Unit must be level + 2 degrees {% inch rise or fall
per foot of run (10mm rise or fall per 305 mm of run) } or
compressor may not function properly.
A. GROUND LEVEL INSTALLATION
The unit must be level and supported above grade by
beams, platform, or a pad. Platform or pad can be of open
or solid construction but should be of permanent
materials such as concrete, bricks, blocks, steel, or
pressure- treated timbers approved for ground contact.
Soil conditions must be considered so that the platform or
pad does not shift or settle and leave the unit partially
supported. Minimum pad dimensions are shown in Figure
2.
If beams or an open platform are used for support, it is
recommended that the soil be treated or area be graveled
to reduce the growth of grasses and weeds.
To minimize vibration or noise transmission, it is
recommended that supports not be in contact with the
building structure. However, slabs on grade constructions
with an extended pad are normally acceptable.
B. ROOF TOP INSTALLATION
This type of installation is not recommended on wood
frame structures where low noise levels are required.
Supporting structure or platform for the unit must be level.
If installation is on a fiat roof, locate unit minimum 6 inches
(152mm) above roof level.
Place the unit over one or more load bearing walls. If there
are several units, mount them on platforms that are
self-supporting and span several load bearing walls.
These suggestions are to minimize noise and vibration
transmission through the structure. If the structure is a
home or apartment, avoid locating the unit over
bedrooms or study.
NOTE: When unit is to be installed on a bonded
guaranteed roof, a release must be obtained from the
building owner to free the installer from all liabilities.
C. FASTENING UNIT DOWN
If conditions or local codes require the unit be attached in
place, remove the knockouts in the base pan and install
tie down bolts through the holes (refer to Figure 2).
Contact local distributor for hurricane hold-down details
and the P.E. (Professional Engineer) certification, when
required.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in proper-
ty damage.
Inadequate unit support may cause excessive
vibration, noise, and/or stress on the refrigerant
lines, leading to refrigerant line failure.
Figure 2 J Tie Down Knockouts
3/8"(10mm) dia. Tie Down Knockouts
In Base Pan (2 places)
View From Top I
Base
Pan
Depth
A
oO
Base Pan Width
Base Pan
Width x Depth
23 x 23
(584 x 584)
251¼6 x 251¼6
(652 x 652)
31Y8 x 31Y8
(791 x 791)
3415A6x 3415A6
(887 x 887)
Inches (mm)
Tie Down
Knockouts
A B C
73A 47A6 18
(197) (113) (457)
91A6 47A6 21¼
(230) (113) (540)
91A6 6Y2 245/8
(230) (165) (625)
91A6 6Y2 287A6
(230) (165) (722)
Minimum
MountingPad
Dimensions
23 x 23
(584 x 584)
26 x 26
(660 x 660)
31Y2x 31Y2
(800 x 800)
35 x 35
(889 x 889)
REFRIGERATION SYSTEM
A. COMPONENT MATCHES
Check to see that the proper system components are in
place, especially the indoor coil.
R-22 outdoor units can only be used with R-22 specific
indoor coils. If there is a refrigerant mis-match, consult
the indoor coil manufacturer to determine if a refrigerant
conversion kit is available for the indoor coil.
This outdoor unit is designed for use only with indoor coils
that utilize a TXV refrigerant metering device. If any other
type of metering device is installed on the indoor coil,
consult the indoor coil manufacturer to determine ifa TXV
conversion kit is available.
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product
damage.
Indoor coil and outdoor unit must be listed as a
certified combination (match) in the ARI Unitary
Directory of Certified Products.
When installing a TXV on an indoor coil, follow the
instructions provided with the new TXV.
4 421 01 5002 01
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