Carrier Infinity 26VNA1 Installation Instructions Manual page 4

26VNA1 Infinity® Variable Speed Air Conditioner: Installation Instructions
Step 1 – Check Equipment and Job Site
Unpack Unit
Move to final location. Remove carton taking care not to damage unit.
This unit employs one louver spacer on each of the four sides to prevent
louver movement during operation. The louver spacers are installed
between the coil surface and louver at the approximate center of each
side (See Fig. 2). This louver spacer should be present and, if dislodged
during shipment, must be reinstalled before unit is placed into operation.
NOTE: 2 Ton units use only two louver spacers on the sides opposite the
control box.
Fig. 2 – Louver Spacer Location
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
size and knockout hole location.
3/4 IN.DIA TIEDOWN
KNOCKOUTS IN BASEPAN
TWO (2) PLACES
A
UNIT BASE PAN
UNIT SIZE Dimension in.
(mm)
23 X 23
2 Ton
(584 X 584)
31.2 X 31.2
3 & 4 Ton
(792 X 792)
35 X 35
5 Ton
(889 X 889)
Fig. 3 – Tie-down Knockout Locations
For hurricane tie downs, contact distributor for details and PE
(Professional Engineer) Certification, if required.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
A11380a
Fig. 3 to determine base pan
C
B
VIEW FROM TOP
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A B
7-13/16 4-7/16
(198) (113)
9–1/8 6–9/16
(231.8) (166.7)
9–1/8 6–9/16
(231.8) (166.7)
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 Advance™ (R-454B)
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 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 leaves cannot fall directly on unit.
On rooftop applications, locate unit at least 6 in. (152.4 mm) above roof
surface.
Step 4 – Operating Ambient
The minimum outdoor operating ambient in cooling mode is 55°F
(12.78°C) without low ambient cooling enabled in the Infinity® System
Control.
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.
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.
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 – In Long-Line Applications, Install Liquid-Line
Solenoid Valve (LLS)
For refrigerant piping arrangements with equivalent lengths of greater
than 80 ft. (24.38 m), follow the piping configuration and liquid line
solenoid valve (LLS) accessory requirements from the Residential
Piping and Long-line guideline. CCH, start gear and piston changes do
C
not apply. If required by Long-Line Guideline, install LLS kit, part no.
KAALS0201LLS. LLS should be installed within 2 ft. (0.61 m) of
18–1/8
(460)
outdoor unit with flow arrow pointing toward outdoor unit.
28–7/16
Make the necessary electrical connections as shown in
(722.3)
and by following the Installation Instructions included with accessory
28–7/16
(722.3)
kit.
A05177
4
CAUTION
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CAUTION
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Fig. 4 and Fig. 5