Carrier Infinity 25VNA4 Installation Instructions Manual page 5

25VNA4: Installation Instructions
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.
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
UNIT SIZE
25VNA424
25VNA436
25VNA448
25VNA460
* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance data when using different size and length line sets.
Notes:
1.Do not apply capillary tube indoor coils to these units.
2.For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal and / or greater than 20 ft. (6.1 m) vertical differential, an accessory Liquid Line Solenoid must be installed.
ACCESSORY
Stator Heater
Evaporator Freeze Protection
Liquid-Line Solenoid Valve
Low-Ambient Control
Puron Refrigerant Balance Port
Hard-ShutOff TXV
Support Feet
Winter Start Control
EMI Kit
*. For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) vertical differential (total equivalent length), an accessory Liquid Line Solenoid must be
installed.
†. Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
LIQUID
Connection Tube
Diameter Diameter
3/8 3/8
3/8 3/8
3/8 3/8
3/8 3/8
Table 2 – Accessory Usage
REQUIRED FOR
LOW-AMBIENT COOLING
APPLICATIONS
(Below 55°F/12.8_C)
Standard
Standard with Infinity Control
No
Standard with Infinity Control
†
Yes
Recommended
Standard with Infinity
Control
No
!
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 beyond 80 ft. (24.38 m),
substantial capacity and performance losses can occur. Follow the pipe
sizing recommendations in the 25VNA Product data to manage these
losses.
Refer to Table 1 for field tubing diameters. Refer to
accessory requirements.
Connection
Diameter
3/4
7/8
7/8
7/8
REQUIRED FOR LONG LINE
APPLICATIONS
(Over 80 ft/24.38 m)
Standard
No
Yes
No
†
Yes
Recommended
Standard with Infinity
Control
No
5
CAUTION
VAPOR*
Max (Rated) Minimum Tube
Diameter Diameter
3/4 5/8
7/8 5/8
1-1/8 3/4
1-1/8 3/4
REQUIRED FOR SEA
*
COAST APPLICATIONS
(Within 2 miles/3.22 km)
Standard
No
No
No
†
Yes
Recommended
Standard with Infinity Control
No
Table 2 for