27VNA3 Infinity® Variable Speed Heat Pump: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
Step 1 – Check Equipment and Job Site
Unpack Unit
Move to final location. Remove carton taking care not to damage unit.
This unit employs louver spacers 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.
A11380a
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 Fig. 3 to determine base pan
size and knockout hole location.
A05177
Fig. 3 – Tie-down Knockout Locations
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 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.
A240366
Fig. 4 – Infinity® Furnace or Fan Coil Wiring with Communicating
Variable Speed HP
UNIT BASE PAN
Dimension in. (mm)
TIEDOWN KNOCKOUT LOCATIONS in. (mm)
A B C
35 X 35
(889 X 889)
9–1/8
(231.8)
6–9/16
(166.7)
28–7/16 (722.3)
3/4 IN.DIA TIEDOWN
KNOCKOUTS IN BASEPAN
TWO (2) PLACES
C
B
A
VIEW FROM TOP
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.
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