5
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
25VNA024
3/8
3/8
7/8
7/8
5/8
25VNA036
3/8
3/8
7/8
7/8
5/8
25VNA048
3/8
3/8
7/8
1---1/8
3/4
25VNA060
3/8
3/8
7/8
1---1/8
3/4
* 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.
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)
REQUIRED FOR SEA
COAST APPLICATIONS
(Within 2 miles/3.22 km)
Installations with Radio
Frequency Interference
Concerns in the Range
of 2 to 30 MHZ
Crankcase Heater
Standard
Standard
Standard
Standard
Evaporator Freeze Protection
Standard with Infinity
t
Control
No
No
No
Liquid---Line Solenoid Valve
No
Yes
No
No
Low---Ambient Control
Standard with Infinity Control
No
No
No
Puron Refrigerant Balance Port
Hard---ShutOff TXV
Yes
{
Yes
{
Yes
{
Yes
{
Support Feet
Recommended
No
Recommended
No
Winter Start Control
Standard with Infinity
Control
Standard with Infinity
Control
Standard with Infinity
Control
Standard with Infinity
Control
EMI Kit
No
No
No
Yes
* 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.
Standard = Standard for all new Puron refrigerant fan coils and furnace coils.
