Laserfiche WebLink
REFRIGERANT CHARGE ADJUSTMENTS <br /> Liquid Line Size Puron Charge oz/ft <br /> 3/8 0.60 <br /> (Factory charge for lineset=9 oz) <br /> 5/16 0.40 <br /> 1/4 0.27 <br /> Units are factory charged for 15 ft(4.6 m)of 3/8"liquid line. The factory charge for 3/8"lineset 9 oz. When using other length or diameter <br /> liquid lines,charge adjustments are required per the chart above. <br /> Charging Formula: <br /> [(Lineset oz/ft x total length)-(factory charge for lineset)]=charge adjustment <br /> Example 1:System has 15 ft of line set using existing 1/4"liquid line. What charge adjustment is required? <br /> Formula: (.27 oz/ft x 15ft)-(9 oz)=(495)oz. <br /> Net result is to remove 4.95 oz of refrigerant from the system <br /> Example 2: System has 45 ft of existing 5/16"liquid line.What is the charge adjustment? <br /> Formula: (.40 oz/ft.x 45ft)-(9 oz.)=9 oz. <br /> Net result is to add 9 oz of refrigerant to the system <br /> LONG LINE APPLICATIONS <br /> An application is considered Long Line, when the refrigerant level in the system requires the use of accessories to maintain acceptable <br /> refrigerant management for systems reliability. See Accessory Usage Guideline table for required accessories. Defining a system as long line <br /> depends on the liquid line diameter,actual length of the tubing,and vertical separation between the indoor and outdoor units. <br /> For Air Conditioner systems,the chart below shows when an application is considered Long Line. <br /> AC WITH PURON®REFRIGERANT LONG LINE DESCRIPTION ft(m) <br /> Beyond these lengths,long line accessories are required <br /> Liquid Line Size Units On Same Level Outdoor Below Indoor Outdoor Above Indoor <br /> 1/4 <br /> No accessories needed within allowed No accessories needed within allowed 175(53.3) <br /> lengths lengths <br /> 5/16 120(36.6) 50(15.2) 120(36.6) <br /> 3/8 80(24.4) 35(10.7) 80(24.4) <br /> Note: See Long Line Guideline for details <br /> VAPOR LINE SIZING AND COOLING CAPACITY LOSS <br /> Acceptable vapor line diameters provide adequate oil return to the compressor while avoiding excessive capacity loss. The suction line <br /> diameters shown in the chart below are acceptable for AC systems with Puron refrigerant: <br /> Unit Maximum Vapor Line Cooling Capacity Loss(%) <br /> Nominal Liquid Line Diameters Total Equivalent Line Length ft.(m) <br /> Size(Btuh) Diameters (In. 26-50 51-80 81-100 101-125 126-150 151-175 176-200 201-225 226-250 <br /> (In.OD) (7.9-15.2) (15.5-24.4) (24.7-30.5) (30.8-38.1) (38.4-45.7) (46.0-53.3) (53.6-61.0) (61.3-68.6) 68.9-76.2) <br /> 18000 1/2 1 2 3 5 6 7 8 9 11 <br /> 1 Stage <br /> AC with 3/8 5/8 0 1 1 1 2 2 2 3 3 <br /> Puron 3/4 0 0 0 0 1 1 1 1 1 <br /> 24000 5/8 0 1 2 2 3 3 4 5 5 <br /> 1 Stage <br /> AC with 3/8 3/4 0 0 1 1 1 1 1 2 2 <br /> Puron 7/8 0 0 0 0 0 1 1 1 1 <br /> 30000 5/8 1 2 3 3 4 5 6 7 8 <br /> 1 Stage <br /> AC with 3/8 3/4 0 0 1 1 1 2 2 2 3 <br /> Puron 7/8 0 0 0 0 1 1 1 1 1 <br /> 36000 5/8 1 2 4 5 6 8 9 10 12 <br /> 1 Stage 3/8 3/4 0 1 1 2 2 3 3 4 4 <br /> AC with <br /> Puron 7/8 0 0 0 1 1 1 1 2 2 <br /> 42000 3/4 0 1 2 2 3 4 4 5 6 <br /> 1 Stage <br /> AC with 3/8 7/8 0 0 1 1 1 2 2 2 3 <br /> Puron 11/8 0 0 0 0 0 0 0 0 0 <br /> 48000 3/4 0 1 2 3 4 5 5 6 7 <br /> 1 Stage <br /> AC with 3/8 7/8 0 0 1 1 2 2 2 3 3 <br /> Puron 11/8 0 0 0 0 0 0 0 1 1 <br /> 60000 3/4 1 2 4 5 6 7 9 110 11 <br /> 1 Stage <br /> AC with 3/8 7/8 0 1 2 2 3 4 4 5 5 <br /> Puron 11/8 0 0 0 1 1 1 1 1 1 <br /> Applications in this area may be long line and may have height restrictions. See the Residential Piping and Long Line Guideline. <br /> 4 <br />