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INSTALLATION
NOTE:
Avoid contact between tubing and structure.
OUTDOOR WALL
CAULK
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND VAPOR
TUBE ONLY)
1" MIN.
SUSPENSION
Fig. 2 − Connecting Tube Installation
Specifications for this unit in residential new construction market
require the outdoor unit, indoor unit, refrigerant tubing sets,
metering device, and filter drier listed in presale literature. There
can be no deviation. Consult the Service Manual – Air
Conditioners and Heat Pumps Using Puron® Refrigerant to
obtain required unit changes for specific applications and for
R−22 retrofit.
Step 1
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.
Step 2
Install on a Solid, Level Mounting Pad
If conditions or local codes require the unit be attached to pad, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern in Fig.
3 to determine base pan size and knockout hole location.
For hurricane tie downs, contact distributor for details and PE
(Professional Engineer)Certification, 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 Using Puron®
Refrigerant for wind baffle construction.
INDOOR WALL
LIQUID TUBE
VAPOR TUBE
JOIST
INSULATION
VAPOR TUBE
LIQUID TUBE
A94026
TIEDOWN KNOCKOUT LOCATIONS
UNIT BASE PAN
DIMENSIONS
A
36−1/2 x 40
11−5/8
Fig. 3 − Tiedown Knockout Locations
NOTE: Unit must be level to within ±2° (±3/8 in./ft.) per
compressor manufacturer specifications.
Step 3
Clearance Requirements
When installing, allow sufficient space for airflow clearance,
wiring, refrigerant piping, and service. Allow 30−in. clearance to
service end of unit and 48 in. above unit. For proper airflow, a
6−in. clearance on 1 side of unit and 12 in. on all remaining sides
must be maintained. Maintain a distance of 24 in. between units.
Position so water, snow, or ice from roof or eaves cannot fall
directly on unit.
On rooftop applications, locate unit at least 6 in. above roof
surface.
Step 4
Operating Ambient
The minimum outdoor operating ambient in cooling mode is
55°F without low ambient cooling enabled and the maximum
outdoor operating ambient in cooling mode is 125°F.
Infinityt communicating systems only (for both 25HNA6 and
25HNA9), low ambient cooling is available to 0°F.
The maximum outdoor operating ambient in heating mode is
66°F on all models. Continuous operation in the heating mode is
approved to −30_F.
Step 5
Elevate Unit
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not allow water and/or ice to build up in base pan.
Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of unit.
3
C
B
28−3/4
6−13/16
A05242
On
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