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227TBN: Installation Instructions
17. Piping material, routing, and installation shall include protection
from physical damage in operation and service, and be in
compliance with the national and local codes and standards of the
installation site.
18. When setting up refrigerant piping, precautions shall be taken to
avoid excessive vibration or pulsation.
Fig. 1 – Piping Installation
When outdoor unit is connected to factory-approved indoor unit, outdoor
unit contains system refrigerant charge for operation with AHRI rated
indoor unit when connected by 15 ft. (5 m) of field-supplied or factory
accessory tubing and factory supplied filter drier. For all sizes, adjust
charge by adding or removing 0.6 oz/ft of 3/8 liquid line above or below
15 ft. (4.6 m) respectively.. For proper unit operation, check refrigerant
charge using charging information located on control box cover and/or
in the Check Charge section of this instruction.
Refrigerant Tubing Connection Outdoor
IMPORTANT: Maximum liquid-line size is 3/8-in. OD for all
residential applications including long line. Refer to Residential Piping
and Long Line Guideline for further information
IMPORTANT: Always install the factory-supplied liquid-line filter
drier. If replacing the filter drier, refer to Product Replacement Parts List
for appropriate part number. Obtain replacement filter driers from your
distributor or branch.
Installation
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.
Check Equipment and Job Site
IMPORTANT: All split system and packaged heat pumps must be
installed pursuant to applicable regional efficiency standards issued by
the Department of Energy.
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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
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 (8.05 km/h) 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,±9.5 mm/m.) per
compressor manufacturer specifications.
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment damage or
A07588
improper operation.
Locate the unit in such a way that it is stable in all circumstances
including adverse weather conditions.
Clearance Requirements
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 mm) (above unit. For proper airflow,
a 6-in. (152 mm) clearance on 1 side of unit and 12-in. (305 mm) on all
remaining sides must be maintained. Maintain a distance of 24 in.
(610mm) 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 mm) above roof
surface.
UNIT BASE PAN
Dimension in.
(mm)
35 X 35
(889 X 889)
Fig. 2 – Tiedown Knockout Locations
2
Fig. 2
to determine base pan
CAUTION
!
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A
B
9–1/8 (231.8)
6–9/16 (166.7) 28–7/16 (722.3)
C
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