Installation guide

INST ALLATION INSTRUCTIONS R- 410A Split System Air Conditioner
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Locate unit in a well drained area, or support unit high
enough so that water runoff will not enter the unit.
Locate unit away from areas where heat, lint, or exhaust
fumes will be discharged onto unit (as from dryer vents).
Locate unit away from recessed or confined areas where
recirculation of discharge air may occur (refer to
CLEARANCES section of this document).
Roof- top installation is acceptable providing the roof will
support the unit and provisions are made for water
drainage and noise/vibration dampening.
NOTE: Roof mounted units exposed to wind may require
wind baffles. Consult the manufacturer for additional
information.
CLEARANCES
When installing, allow sufficient space for airflow
clearance, wiring, refrigerant piping, and service. Allow
24 in. (610 mm) clearance to service end of unit and 48 in.
(1219.2 mm) above unit. For proper airflow, a 6 in. (152.4
mm) clearance on one side of unit and 12 in. (304.8 mm)
on all remaining sides must be maintained. Maintain a
distance of 24 in. (609.6 mm) between units or 18 in.
(457.2 mm) if no overhang within 12 ft. (3.66 m). Position
so water, snow, or ice from roof or eaves cannot fall
directly on unit.
Operating Ambient
The minimum outdoor operating ambient in cooling mode
without accessory is 55_F (12.78_C). The maximum outdoor
operating ambient in cooling mode is 125_F (51.7_C) for
non- 13 SEER models and 115_F (46.11_C) for 13 SEER
models.
UNIT SUPPORT
NOTE: Unit must be level + 2 degrees [a ⅜inch rise or fall
per foot of run (10 mm 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 1.
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 flat roof, locate unit minimum 6
inches (152 mm) 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 1).
Contact local distributor for hurricane hold- down details
and the P.E. (Professional Engineer) certification, when
required.
!
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in
property damage.
Inadequate unit support may cause excessive vi-
bration, noise, and/or stress on the refrigerant
lines, leading to refrigerant line failure.