4
Table1 – RefrigerantConnections and RecommendedLiquid and Vapor TubeDiameters (in.)
UNITSIZE
LIQUID RATEDVAPOR*
Connection
Diameter
Tube
Diameter
Connection
Diameter
Tube
Diameter
25HPA624 3/8 3/8 3/4 3/4
25HPA636 3/8 3/8 7/8 7/8
25HPA648 3/8 3/8 7/8 1--- 1/ 8
25HPA660 3/8 3/8 7/8 1--- 1/ 8
* Units are rated with 25 ft. (7.6 m) of lineset.See Product Data sheet for performance data when using different size and length linesets.
Notes:
1. Do not apply capillarytube indoor coilsto these units.
2. For TubingSet l engthsbetween 80 and 200 ft. (24.38 an d60.96 m) horizontalor
20ft. (6.1 m) verticaldifferential, refer to the ResidentialPiping andLongline Guideline using Puronrefrigerant.
Table2 – Accessory U sage
ACCESSORY
REQUIREDFOR
LO W --- AM B I E N T CO O L I N G
APPLICATIONS
(Below55°F/12.8_C)
REQUIRED FOR LONG LINE
APPLICATIONS*
(Over80 ft/24.38 m)
REQUIREDFOR SEA
COAST APPLICATIONS
(Within2miles/3.22km)
CrankcaseHeater Standard Standard Standard
EvaporatorFreeze Protection
Standard with InfinitytControl
(Low Ambient not allowed with non---
communicatingthermostat)
No No
Liquid---LineSolenoid Valve No Yes No
Low---AmbientControl
Standard with Infinity Control (Low
ambientnot allowed with non ---commu-
nicatingthermostat)
No No
PuronRefrigerant Balance Port
Ha r d ---S h u t O f f T X V Yes{Yes{Yes{
SupportFeet Recommended No Recommended
WinterStart Control
Standard with Infinity Control
(LowAmbient not allowed with non---
communicatingthermostat)
No No
* 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), refer to the Long
LineGuideline—AirConditioners and Heat Pumpsusing Puron®Refrigerant.
{Requiredon all indoorunits. Standard on all newPuron refrigerant fan coils andfurnace coils.
25HPA6