INSTALLATION INSTRUCTIONS
R
−
410A Split System Air Conditioner
421 01 5104 02
3
Specifications subject to change without notice.
For hurricane tie downs
−
contact your local distributor for
details and PE (Professional Certification), if required by local
authorities.
On rooftop applications, mount on level platform or frame.
Place unit above a load
−
bearing wall and isolate unit and
tubing set from structure. Arrange supporting members to
adequately support unit and minimize transmission of
vibration to building. Consult local codes governing rooftop
applications.
Roof mounted units exposed to winds may require wind
baffles. Consult the Low
−
Ambient pressure switch installation
instructions for wind baffle construction.
NOTE
: Unit must be level to within
±
2
_
(
±
3/8 in./ft..) per
compressor manufacturer specifications.
Clearance Requirements
When installing, allow sufficient space for airflow clearance,
wiring, refrigerant piping, and service. Allow 30 in. (762 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. Position so water, snow, or ice
from roof or eaves cannot fall directly on unit.
Figure 2
Tie Down Knockouts
3/8-in. (9.53 mm) Dia.
Tiedown Knockouts in
Basepan(2) Places
View From Top
UNIT BASE PAN
Dimension
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A
B
C
31–1/2 X 31–1/2
9–1/8 (231.8)
6–9/16 (166.7)
24–11/16 (627.1)
35 X 35
9–1/8 (231.8)
6–9/16 (166.7)
28–7/16 (722.3)
On rooftop applications, locate unit at least 6 in. (152.4 mm)
above roof surface.
Operating Ambient
The minimum outdoor operating ambient in cooling mode is
55
°
F (12.78
_
C) without low ambient cooling enabled, and the
maximum outdoor operating ambient in cooling mode is
125
°
F (51.67
_
C).
Make Piping Connections
!
WARNING
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could result in personal
injury or death.
Relieve pressure and recover all refrigerant before system
repair or final unit disposal.
Use all service ports and open all flow
−
control devices,
including solenoid valves.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not leave system open to atmosphere any longer than
minimum required for installation. POE oil in compressor is
extremely susceptible to moisture absorption. Always keep
ends of tubing sealed during installation.
If ANY refrigerant tubing is buried, provide a 6 in. (152.4
mm) vertical rise at service valve. Refrigerant tubing
lengths up to 36 in. (914.4 mm) may be buried without
further special consideration. Do not bury lines more than
36 in. (914.4 mm).
Outdoor units may be connected to indoor section using
accessory tubing package or field
−
supplied refrigerant grade
tubing of correct size and condition. For tubing requirements
beyond 80 ft/24.38 m, substantial capacity and performance
losses can occur. Following the recommendations in the
Long Line Applications Guideline for Split
−
System Air
Conditioners and Heat Pumps will reduce these losses. Refer
to Table 1 for accessory requirements. Refer to Table 2 for
field tubing diameters.
There are no buried
−
line applications greater than 36 in.
(914.4 mm).
If refrigerant tubes or indoor coil are exposed to atmosphere,
they must be evacuated to 500 microns to eliminate
contamination and moisture in the system.
Outdoor Unit Connected to Factory Approved
Indoor Unit
Outdoor unit contains correct system refrigerant charge for
operation with factory approved AHRI rated indoor unit when
c o n n e c t e d b y 1 5 f t . ( 4 . 5 7 m ) o f f i e l d
−
s u p p l i e d o r
factory
−
accessory tubing, and factory supplied filter drier.
Check refrigerant charge for maximum efficiency.
