GA7T: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
Installation
IMPORTANT:
All split system and packaged air conditioners must be
installed pursuant to applicable regional efficiency standards issued by
the Department of Energy.
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, tie down
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 local distributor for details and PE
(Professional Engineer) 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 Application Guideline and 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,±9.5 mm/m.) per
compressor manufacturer specifications.
Clearance Requirements
When installing, allow sufficient space for airflow clearance, wiring,
refrigerant piping, and service. Allow 24 in. (609.6 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.
On rooftop applications, locate unit at least 6 in. (152.4 mm) above roof
surface.
Make Piping Connections
A05177
Fig. 2 – Tiedown Knockout Locations
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant grade tubing of correct size
and condition. Rated tubing diameters shown in
Table 1
are
recommended up to 80 ft. (24.38 m). See Product Data for acceptable
alternate vapor diameters and associated capacity losses. For tubing
requirements beyond 80 ft. (24.38 m), substantial capacity and
performance losses can occur. Following the recommendations in the
Longline Guideline will reduce these losses. Refer to
Table 1
for field
tubing diameters. Refer to
Table 2
for accessory requirements.
There are no buried-line applications greater than 36-in. (914.4 mm)
allowed.
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 connected by 15 ft.
(4.57 m) of field-supplied or factory-accessory tubing, and factory
supplied filter drier. Check refrigerant charge for maximum efficiency.
Refrigerant Tubing Connection Outdoor
Connect vapor and liquid tubes to fittings on vapor and liquid service
valves (see
Table 1
.) Use refrigerant grade tubing
Sweat Connection
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing and gloves when handling parts.
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.
Federal regulations require that you do not vent refrigerant to the
atmosphere. Recover during system repair or final unit disposal.
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
more than 36-in. (914.4 mm).
UNIT BASE PAN
Dimension in.
(mm)
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A
B
C
31–1/2 X 31–1/2
(800 X 800)
9–1/8 (231.8)
6–9/16 (166.7)
24–11/16
(627.1)
35 X 35
(889 X 889)
9–1/8 (231.8)
6–9/16 (166.7)
28–7/16
(722.3)
