Installation Manual

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Specifications subject to change without notice.
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. 2
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 R - 410A
Refrigerant for wind baffle construction.
NOTE: Unit must be level to within 2 (3/8 in./ft,9.5 mm/m.)
per compressor manufacturer specifications.
Step 3 — Clearance Requirements
When installing, allow suf ficient 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.
A05177
UNIT BASE PAN
Dimension in. (mm)
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A B C
23 X 23
(596 X 596)
7- 13/16 (198) 4- 7/ 16 (102) 18- 1/8 (458)
31.2 X 31.2
(792 X 792)
9- 1/8 (232) 6 - 9/16 (167) 24- 11/16 (627)
35 X 35
(889 X 889)
9- 1/8 (232) 6 - 9/16 (167) 28- 7/16 (722)
Fig. 2 - Tie- down Knockout Locations
Step 4 — Operating Ambient
The minimum outdoor operating ambient is 40_F(4.4_C) with
Observer
®
Wall Control, 55_F (12.8_C) with non- communicating
systems. The maximum outdoor operating ambient is 115_F
(46.1_C). Compressor p rotections will prevent operation below
minimum ambient temperature range. The system may operate in
coolingupto125_F(52_C) (52C) with significant reduced
capacity cutback above 115_F (46.1_C). Refer to Product Data
“Detailed Cooling Capacity” table. Low ambient cooling
operation is not currently available.
Step 5 — Elevate Unit
Elevate unit per local climate and code requirements to provide
clearance above estimated snowfall level and ensure adequate
drainage of 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.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Locate the unit in such a way that it is stable in all
circumstances including adverse weather conditions.
Step 6 — Make Piping Connections
!
WARNING
PERSONAL INJURY AND UNIT DAMAGE
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.
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).
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 between 80 - 100 ft.
(24.38 - 30.48 m), capacity and performance losses can occur .
Follow the pipe sizing recommendations in the CVA9, HVA9,
TVA9 Product data to manage these losses. This unit shall not be
installed with greater than 100 ft (30.48 m) of equivalent line
length.
Refer to Table 1 for field tubing diameters. No additional
accessories are required for line lengths between 80 - 100 ft. (24.4
- 30.5 m) on this product.