2
INSTALLATION
Check Equipment and Job Site
Unpack Unit
Move to final location. Remove carton taking care not to damage
unit.
Inspect Equipment
File claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit rating plate on unit corner
panel. It contains information needed to properly install unit.
Check rating plate to be sure unit matches job specifications.
Install on a Solid, Level Mounting Pad
If conditions or local codes require the unit be attached to pad,
tiedown bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern in
Fig. 2 to determine base pan size and knockout hole location.
For hurricane tie downs, contact distributor for details and PE
Certification (Professional Engineer), if required.
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 above 5 mph may require
wind baffles. Consult the Service Manual -- Residential Split
System Air Conditioners and Heat Pumps 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 1 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.
VIEW
FROM TOP
3/8--IN. DIA. TIEDOWN KNOCKOUTS
IN BASEPAN (2) PLACES
UNIT BASE PAN
DIMENSIONS
in. (mm)
TIEDOWN KNOCKOUT LOCATIONS
in. (mm)
A
B
C
29--1/2 X 33
(749.3 X 838.2)
10–1/16
(255.6)
5–5/8
(142.9)
23–3/4
(603.3)
36–1/2 X 40
(927.1 X 1016)
9–5/8
(244.5)
6–13/16
(173.0)
28–3/4
(730.3)
A05177
Fig. 2
---
Tiedown Knockout Requirements
On rooftop applications, locate unit at least 6 in. 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. The maximum outdoor operating ambient in
heating mode is 66
°
F/18.89
_
C.
Elevate Unit
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Unit must be kept free of an accumulation of water and/or ice
in the basepan.
Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of unit. If using accessory support feet, use installation
instructions from kit for installation.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
To prevent damage to the unit, ensure that it is located with
the supports such that the unit is stable in all circumstances
including adverse conditions.
Make Piping Connections
!
WARNING
PERSONAL INJURY / 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.
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 longer than 36 in.
(914.4 mm).
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
To prevent damage to unit or service valves, observe the
following:
S
Use a brazing shield.
S
Wrap service valves with wet cloth or use a heat sink
material.
264A
/265A
