Carrier 25HPA6 Marine Heating System User Manual


 
4
Table 1 – Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (in.)
UNIT SIZE
LIQUID RATED VAPOR*
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 capillary tube indoor coils to these units.
2. For Tubing S et lengths between 80 an d 200 ft. (24.38 and 60.96 m) horizontal or
20 ft. (6.1 m) vertical differential, refer to the Residential Piping and Longline Guideline u sing Puron refrigerant.
Table 2 – Accessory Usage
ACCESSORY
REQUIRED FOR
LO W --- A M BI E NT CO OL ING
APPLICATIONS
(Below 55°F/12.8_C)
REQUIRED FOR LONG LINE
APPLICATIONS*
(Over 80 ft/24.38 m)
REQUIRED FOR SEA
COAST APPLICATIONS
(Within2miles/3.22km)
Crankcase Heater Standard Standard Standard
Evaporator Freeze Protection
Standard with Infinityt Control
(Low Ambient not al lowed with non---
communicating thermostat)
No
No
Liquid---Line Solenoid Valve No Yes No
Low---Ambient Control
Standard with Infinity Control (Low
ambient not allowed with non---commu-
nicating thermostat)
No
No
Puron Refrigerant Balance Port
H a r d --- Sh u tO f f T X V
Yes{ Yes{ Yes{
Support Feet Recommended
No
Recommended
Winter Start Control
Standard with Infinity Control
(Low Ambient not allowed with non---
communicating thermostat)
No
No
* For tubing set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft. (6.10 m) ver tical differen tial (total equivalent length), refer to the Long
Line Guideline—Air Conditioners and Heat Pumps using Puron® Refrigerant.
{ Required on all indoor units. Standard on all new Puron refrigerant fan coils and furnace coils.
25HPA6