24VNA6: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
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 24VNA6 Product data to manage these
losses.
Refer to
for field tubing diameters. Refer to
accessory requirements.
* 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.
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. PVE 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).
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
UNIT SIZE
LIQUID
VAPOR*
Connection
Diameter
Tube
Diameter
Connection
Diameter
Max (Rated)
Diameter
Minimum Tube
Diameter
24VNA624
3/8
3/8
3/4
3/4
5/8
24VNA636
3/8
3/8
7/8
7/8
5/8
24VNA648
3/8
3/8
7/8
1-1/8
3/4
24VNA660
3/8
3/8
7/8
1-1/8
3/4
Table 2 – Accessory Usage
ACCESSORY
REQUIRED FOR
LOW-AMBIENT COOLING
APPLICATIONS
(Below 55°F/12.8_C)
REQUIRED FOR LONG LINE
APPLICATIONS
*
(Over 80 ft/24.38 m)
*. 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 FOR SEA
COAST APPLICATIONS
(Within 2 miles/3.22 km)
Crankcase Heater
Standard
Standard
Standard
Evaporator Freeze Protection
Standard with Infinity Control
No
No
Liquid-Line Solenoid Valve
No
Yes
No
Low-Ambient Control
Standard with Infinity Control
No
No
Puron Refrigerant Balance Port
Hard-ShutOff TXV
Yes
†
†. Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
Yes
Yes
Support Feet
Recommended
No
Recommended
