Step 3 - Clearance Requirements; Step 4 - Operating Ambient; Step 5 - Elevate Unit; Step 6 - In Long-Line Applications, Install Liquid-Line Solenoid Valve - Carrier Infinity 25VNA4 Installation Instructions Manual

25VNA4: Installation Instructions
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 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 eaves 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, and the maximum
outdoor operating ambient in cooling mode is 125°F (51.67°C). The
maximum heating operation ambient is 66°F (18.9°C). Compressor
protections prevent operation below -10 to -20°F.
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 – In Long-Line Applications, Install Liquid-Line
Solenoid Valve (LSV)
For refrigerant piping arrangements with equivalent lengths of
than 80 ft. (24.38 m) and/or when elevation difference between indoor
and outdoor unit is greater than ±20 ft. (±6.10 m), follow the piping
configuration and liquid line solenoid valve (LSV) accessory
requirements from the Residential Piping and Long-line guideline. CCH,
start gear and piston changes do not apply. If required by Long-Line
Guideline, install LSV kit, part no. KHALS0401LLS, specifically
designed for Puron® refrigerant heat pumps. LSV should be installed
within 2 ft. (0.61 m) of outdoor unit with flow arrow pointing toward
outdoor unit.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Make the necessary electrical connections as shown in
and by following the Installation Instructions included with accessory
kit.
IMPORTANT: Flow arrow must point toward outdoor unit.
User Interface
Green
A
Yellow
B
White
C
Red
D
S1
Optional Remote
Room Sensor
S2
Fig. 4 – Liquid Line Solenoid Electrical Connection
(Required for long line applications)
Wall Control
D
C
B
A
Humidifier
Fig. 5 – Infinity Furnace or Fan Coil Wiring with Communicating
Step 7 – Make Piping Connections
PERSONAL INJURY AND UNIT DAMAGE
HAZARD
greater
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.
4
Variable
Furnace or Speed
Fan Coil HP
A A
B B
Connection (optional)
C C
D D
C
LS
Furnace or Fan Coil
D
C
B
A
D not required
'C' connection optional
Variable Speed HP
WARNING
!
Fig. 4 and Fig. 5
LLS
A180243
HP or AC
C
B
A
A200204