Steel Suction Line Accumulators
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- Barry Peters
- 5 years ago
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1 Steel Suction Line Accumulators U-Tube Style Accumulators VA, PA and VPA Series The U-tube accumulator design is a result of extensive laboratory testing of various designs. It takes into account essential requirements such as safe holding volume (relative to the system s total charge), protected flow control for positive refrigerant and oil return, and minimum pressure drop across the accumulator. Parker offers standard accumulator models designed for application on heat pump and refrigeration systems from 1/4 ton (.88 kw) through 28.5 tons (100.2 kw). Liquid refrigerant holding requirements of suction accumulator may vary by application. Features and Benefits Solid copper connections (except where noted in the following tables) U-tube design for maximum flow of refrigerant and minimum oil entrapment Inlet flow deflector guides refrigerant toward wall for smooth tangential flow and gradual expansion Baffled U-tube entrance is positioned behind the inlet flow deflector to prevent unwanted liquid refrigerant from entering and damaging compressor at all rated conditions Metering orifice matched to system capacity which optimizes liquid refrigerant and oil flow return back to compressor at all rated conditions Protective screen and orifice assembly on U-tube protects against contaminants affecting metering function Minimum pressure drop and Maximum refrigerant flow VA and VPA models are U.L. Listed for USA and Canada for 300 psig (20.7 bar) maximum working pressure under SA5764-SKXY/SKXY7 PA models are U.L. Listed for USA and Canada for 355 psig (24.5 bar) maximum working pressure under SA5764-SKXY/SKXY7 Powder coating surpasses 500 hour ASTM salt spray Integral 430 F (221 C) fuse plugs on larger models Compatible with CFC, HCFC and HFC refrigerants including R-22, R-134a, R-404A, R-407C, R-410A, R-500, R-502 and R-507 C-1, Accumulators and Receivers / Page 5 Dimensions and Flow Data Refer to pages 6 through 10 for dimension values and flow data.
2 Page 6 / C-1, Accumulators and Receivers Dimensions VA Series PA and VPA Series E D E D IN OUT IN OUT B C B C A A
3 C-1, Accumulators and Receivers / Page 7 Dimensions Item Unit Weight lbs. (KG) A Diameter B Overall Length C C Vessel Length D Connection E Fitting F Oil Orifice Internal Volume Cu. Ft. (liters) Holding Capacities VA304S (0.8) 3 (76.0) 8-1/4 (210.0) 7-1/2 (191.0) 1/2 (12.7) 1-5/8 (41.0) (1.5) (0.85) 35 (1.02) VA314S (0.9) 3 (76.0) 10-3/8 (264.0) 9-3/8 (238.0) 1/2 (12.7) 1-3/4 (44.0) (1.4) (0.96) 1.16 (39) VA315S (0.9) 3 (76.0) 10-3/8 (264.0) 9-3/8 (238.0) 5/8 (15.9) 1-3/4 (44.0) (1.4) (0.96) 1.16 (39) VA325S (1.0) 3 (76.0) 12-1/4 (311.0) 11-1/2 (292.0) 5/8 (15.9) 1-5/8 (41.0) (1.5) (1.13) 46 (1.36) VA326S (1.0) 3 (76.0) 12-5/8 (321.0) 11-1/2 (292.0) 3/4 (19.1) 1-5/8 (41.0) (1.5) (1.13) 46 (1.36) VA355S (1.2) 3 (76.0) 15-1/16 (383.0) 13-3/4 (349.0) 5/8 (15.9) 1-5/8 (41.0) (1.4) (1.44) 59 (1.74) VA356S (1.2) 3 (76.0) 15-1/16 (383.0) 13-3/4 (349.0) 3/4 (19.1) 1-5/8 (41.0) (1.4) (1.44) 59 (1.74) VA445SRD (2.0) 4 (102.0) 10-3/4 (273.0) 9-15/16 (252.0) 5/8 (15.9) 2-1/2 (64.0) (0.9) (2.04) 83 (2.45) VA446SRD (2.0) 4 (102.0) 10-5/8 (270.0) 9-3/4 (248.0) 3/4 (19.1) 2-1/2 (64.0) (1.4) (2.04) 83 (2.45) PA C (2.0) 4 (102.0) 9-5/8 (244.0) 8-1/2 (216.0) 5/8 (15.9) 1-3/4 (44.0) (1.4) (1.73) 70 (2.08) PA C (2.0) 4 (102.0) 9-5/8 (244.0) 8-1/2 (216.0) 3/4 (19.1) 1-3/4 (44.0) (1.4) (1.73) 70 (2.08) VA546SRD (2.4) 5 (127.0) 9-5/8 (244.0) 8-1/2 (216.0) 3/4 (19.1) 2-3/4 (70.0) (1.6) 0.09 (2.55) 104 (3.07) VA547SRD (2.4) 5 (127.0) 9-3/4 (248.0) 8-1/2 (216.0) 7/8 (22.2) 2-3/4 (70.0) (1.6) 0.09 (2.55) 104 (3.07) VA557SRD (3.2) 5 (127.0) 10-3/4 (273.0) 9-1/2 (241.0) 7/8 (22.2) 3.0 (76.0) (1.4) 0.11 (3.11) 127 (3.75) VA566SRD (3.6) 5 (127.0) 12-3/4 (324.0) 11-5/8 (295.0) 3/4 (19.1) 2-3/4 (70.0) (1.6) 0.13 (3.68) 150 (4.43) VA567SRD (3.6) 5 (127.0) 13 (330.0) 11-3/4 (298.0) 7/8 (22.2) 2-3/4 (70.0) (1.6) 0.13 (3.68) 150 (4.43) VA577SRD (3.7) 5 (127.0) 14-5/8 (371.0) 13-3/8 (340.0) 7/8 (22.2) 2-3/4 (70.0) (1.6) 0.14 (3.96) 161 (4.77) VA579SRD (3.7) 5 (127.0) 14-13/16 (376.0) 13-3/8 (340.0) 1-1/8 (28.6) 2-3/4 (70.0) (1.6) 0.14 (3.96) 161 (4.77) VPA5896SRD (2.3) 5 (127.0) 9-5/8 (244.0) 8-5/16 (211.0) 3/4 (19.1) 1-3/4 (44.0) (1.4) (2.41) 98 (2.90) VPA5897SRD (2.2) 5 (127.0) 9-5/8 (244.0) 8-1/8 (206.0) 7/8 (22.2) 1-3/4 (44.0) (1.4) (2.35) 96 (2.83) VPA58116SRD (3.1) 5 (127.0) 11-5/16 (287.0) 10 (254.0) 3/4 (19.1) 1-3/4 (44.0) (1.4) (2.91) 119 (3.51) VPA58117SRD (2.7) 5 (127.0) 11-5/16 (287.0) 9-13/16 (249.0) 7/8 (22.2) 1-3/4 (44.0) (1.4) (2.86) 116 (3.44) VPA58127SRD (3.5) 5 (127.0) 12-7/8 (327.0) 11-3/8 (289.0) 7/8 (22.2) 1-3/4 (44.0) (1.4) (3.31) 135 (3.99) VPA58157SRD (3.8) 5 (127.0) 15-3/8 (391.0) 13-13/16 (351.0) 7/8 (22.2) 1-3/4 (44.0) (1.4) (4.05) 165 (4.88) VPA58177SRD (4.4) 5 (127.0) 17-1/4 (438.0) 15-3/4 (400.0) 7/8 (22.2) 1-3/4 (44.0) (1.4) (4.61) 188 (5.56) VA599SRD (3.8) 5 (127.0) 18-3/8 (467.0) 16-15/16 (430.0) 1-1/8 (28.6) 2-3/4 (70.0) (1.6) 0.18 (5.09) 207 (6.14) VA5911SRD (3.8) 5 (127.0) 18-7/16 (468.0) 16-15/16 (430.0) 1-3/8 (34.9) 2-3/4 (70.0) (1.6) 0.18 (5.09) 207 (6.14) VA6107SRD (5.4) 6 (152.0) 13-7/8 (352.0) 12-5/8 (321.0) 7/8 (22.2) 2-15/16 (75.0) (1.0) 0.18 (5.09) 207 (6.14) VA6109SRD (5.4) 6 (152.0) 14 (356.0) 12-5/8 (321.0) 1-1/8 (28.6) 2-15/16 (75.0) (1.0) 0.18 (5.09) 207 (6.14) VA6119SRD (5.6) 6 (152.0) 15-1/4 (387.0) 13-3/4 (349.0) 1-1/8 (28.6) 2-15/16 (75.0) (1.9) 0.20 (5.66) 230 (6.82) VA61111SRD (5.6) 6 (152.0) 15-1/4 (387.0) 13-3/4 (349.0) 1-3/8 (34.9) 2-15/16 (75.0) (1.5) 0.20 (5.66) 230 (6.82) VA61511SRD (7.2) 6 (152.0) 19-1/2 (495.0) 18 (457.0) 1-3/8 (34.9) 2-15/16 (75.0) (1.9) 0.29 (8.21) 334 (9.89) VA61613SRD (7.4) 6 (152.0) 21-7/8 (556.0) 20-1/4 (514.0) 1-5/8 (41.3) 2-15/16 (75.0) (1.5) 0.30 (8.49) 346 (10.23) Holding capacities stated for R-410A at 40 F (4 C). Multiply holding capacity by 1.1 to obtain R-22 data at 40 F (4 C). Multiply total system charge by 0.7 to obtain recommended maximum holding capacity for fixed orifice systems. Multiply total system charge by 0.5 to obtain recommended maximum holding capacity for systems with TEVs. numbers in bold font are available as standard wholesale offering. 1 These models have copper-plated steel connections. All other models have solid copper connections. Ounces (liters)
4 Page 8 / C-1, Accumulators and Receivers Flow Capacity Flow Capacity in Tons (kw) Refrigerant F (+4 C) +20 F (-6 C) 0 F (-17 C) VA304S (7.0) 1.3 (4.6) 0.9 (3.1) VA314S 2.0 (7.0) 1.3 (4.6) 0.9 (3.1) VA315S 3.0 (10.6) 2.0 (6.9) 1.3 (4.7) VA325S 3.0 (10.6) 2.0 (6.9) 1.3 (4.7) VA326S (14.1) 2.6 (9.2) 1.8 (6.2) VA355S 3.0 (10.6) 2.0 (6.9) 1.3 (4.7) VA356S 4.0 (14.1) 2.6 (9.2) 1.8 (6.2) VA445SRD (10.6) 2.0 (6.9) 1.3 (4.7) VA446SRD (14.1) 2.6 (9.2) 1.8 (6.2) PA C 3.0 (10.6) 2.4 (8.4) 1.9 (6.7) PA C 3.0 (10.6) 2.5 (8.8) 2.0 (7.0) VA546SRD 4.0 (14.1) 2.6 (9.2) 1.8 (6.2) VA547SRD 7.3 (25.7) 4.8 (16.7) 3.2 (11.4) VA557SRD 7.3 (25.7) 4.8 (16.7) 3.2 (11.4) VA566SRD 4.0 (14.1) 2.6 (9.2) 1.8 (6.2) VA567SRD 7.3 (25.7) 4.8 (16.7) 3.2 (11.4) VA577SRD 7.3 (25.7) 4.8 (16.7) 3.2 (11.4) VA579SRD 11.8 (41.5) 7.7 (27.0) 5.2 (18.4) VPA5896SRD 4.0 (14.1) 2.6 (9.1) 1.8 (6.3) VPA5897SRD 7.3 (25.7) 4.8 (16.7) 3.2 (11.4) VPA58116SRD 7.5 (26.4) 5.0 (17.6) 3.4 (12.0) VPA58117SRD 7.3 (25.7) 4.8 (16.9) 3.2 (11.3) VPA58127SRD 6.3 (22.2) 4.5 (15.8) 3.0 (10.6) VPA58157SRD 10.4 (36.6) 6.9 (24.3) 3.7 (13.0) VPA58177SRD 11.2 (39.4) 7.4 (26.0) 4.9 (17.2) VA599SRD 11.8 (41.5) 7.7 (27.0) 5.2 (18.4) VA5911SRD 18.8 (66.1) 12.3 (43.1) 8.3 (29.3) VA6107SRD (25.7) 4.8 (16.7) 3.2 (11.4) VA6109SRD (41.5) 7.7 (27.0) 5.2 (18.4) VA61111SRD (66.1) 12.3 (43.1) 8.3 (29.3) VA61511SRD 18.8 (66.1) 12.3 (43.1) 8.3 (29.3) VA61613SRD (100.2) 18.6 (65.3) 12.6 (44.5) Factors For Other Ratings Evaporator Temperature -20 F (-28 C) -40 F (-40 C) X Factor To find the capacity for -20 F (-28 C) and -40 F (-40 C) evaporator temperatures in tons, multiply the 40 F (4 C) evaporator temperature by the X factor. To find the minimum capacity in tons, multiply the 40 F (4 C) rating by Maximum recommended tons based on pressure drop through the accumulator equal to 1.0 F (-17 C) temperature drop. Notes: 1. Minimum recommended tons should be no less than 15% of recommended tons to ensure positive oil return. 2. All data based on actual tons and is not related to horsepower. 3. Minimum evaporator temperature: -40 F (4 C). Minimum suction gas temperature through the accumulator: +10 F (-12 C). For operating conditions not within the rating data, please contact Parker before proceeding with installation.
5 C-1, Accumulators and Receivers / Page 9 Flow Capacity Flow Capacity in Tons (kw) Refrigerant 502 Refrigerant 134a +40 F (+4 C) +20 F (-6 C) 0 F (-17 C) +40 F (+4 C) +20 F (-6 C) 0 F (-17 C) VA304S (4.5) 0.8 (2.9) 0.5 (1.9) 1.3 (4.5) 0.9 (3.0) 0.5 (1.8) VA314S 1.3 (4.5) 0.8 (2.9) 0.5 (1.9) 1.3 (4.5) 0.9 (3.0) 0.5 (1.8) VA315S 1.9 (6.8) 1.2 (4.3) 0.8 (2.8) 1.9 (6.7) 1.3 (4.5) 0.8 (2.8) VA325S 1.9 (6.8) 1.2 (4.3) 0.8 (2.8) 1.9 (6.7) 1.3 (4.5) 0.8 (2.8) VA326S (9.1) 1.6 (5.7) 1.1 (3.8) 2.5 (8.9) 1.7 (6.0) 1.0 (3.7) VA355S 1.9 (6.8) 1.2 (4.3) 0.8 (2.8) 1.9 (6.7) 1.3 (4.5) 0.8 (2.8) VA356S 2.6 (9.1) 1.6 (5.7) 1.1 (3.8) 2.5 (8.9) 1.7 (6.0) 1.0 (3.7) VA445SRD (6.8) 1.2 (4.3) 0.8 (2.8) 1.9 (6.7) 1.3 (4.5) 0.8 (2.8) VA446SRD (9.1) 1.6 (5.7) 1.1 (3.8) 2.5 (8.9) 1.7 (6.0) 1.0 (3.7) PA C 2.2 (7.7) 1.8 (6.3) 1.6 (5.6) 2.5 (8.8) 1.6 (5.6) 1.4 (4.9) PA C 2.2 (7.7) 1.9 (6.7) 1.7 (5.9) 2.5 (8.8) 1.7 (5.9) 1.5 (5.3) VA546SRD 2.6 (9.1) 1.6 (5.7) 1.1 (3.8) 2.5 (8.9) 1.7 (6.0) 1.0 (3.7) VA547SRD 4.7 (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VA557SRD 4.7 (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VA566SRD 2.6 (9.1) 1.6 (5.7) 1.1 (3.8) 2.5 (8.9) 1.7 (6.0) 1.0 (3.7) VA567SRD 4.7 (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VA577SRD 4.7 (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VA579SRD 7.6 (26.7) 4.8 (16.9) 3.2 (11.1) 7.5 (26.4) 5.0 (17.7) 3.1 (10.9) VPA5896SRD 2.6 (9.1) 1.6 (5.6) 1.1 (4.0) 2.5 (8.8) 1.7 (6.0) 1.0 (3.5) VPA5897SRD 4.7 (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VPA58116SRD 4.7 (16.5) 3.0 (10.6) 2.0 (7.0) 4.6 (16.2) 3.1 (10.9) 1.9 (6.7) VPA58117SRD 4.5 (15.8) 2.8 (9.8) 1.8 (6.3) 4.4 (15.5) 2.8 (9.8) 1.7 (6.0) VPA58127SRD 4.6 (16.2) 2.9 (10.2) 1.9 (6.7) 4.5 (15.8) 2.9 (10.2) 1.8 (6.3) VPA58157SRD 4.8 (16.9) 3.2 (11.3) 2.2 (7.7) 4.7 (16.5) 3.2 (11.3) 2.0 (7.0) VPA58177SRD 6.6 (23.2) 4.8 (16.9) 3.2 (11.3) 7.5 (26.4) 5.0 (17.6) 3.1 (10.9) VA599SRD 7.6 (26.7) 4.8 (16.9) 3.2 (11.1) 7.5 (26.4) 5.0 (17.7) 3.1 (10.9) VA5911SRD 12.1 (42.6) 7.7 (27.0) 5.1 (17.8) 12.0 (42.1) 8.0 (28.2) 4.9 (17.3) VA6107SRD (16.5) 3.0 (10.5) 2.0 (6.9) 4.6 (16.3) 3.1 (11.0) 1.9 (6.7) VA6109SRD (26.7) 4.8 (16.9) 3.2 (11.1) 7.5 (26.4) 5.0 (17.7) 3.1 (10.9) VA61111SRD (42.6) 7.7 (27.0) 5.1 (17.8) 12.0 (42.1) 8.0 (28.2) 4.9 (17.3) VA61511SRD 12.1 (42.6) 7.7 (27.0) 5.1 (17.8) 12.0 (42.1) 8.0 (28.2) 4.9 (17.3) VA61613SRD (64.6) 11.6 (40.9) 7.7 (26.9) 18.1 (63.8) 12.2 (42.8) 7.5 (26.2) Factors For Other Ratings Evaporator Temperature -20 F (-28 C) -40 F (-40 C) X Factor To find the capacity for -20 F (-28 C) and -40 F (-40 C) evaporator temperatures in tons, multiply the 40 F (4 C) evaporator temperature by the X factor. To find the minimum capacity in tons, multiply the 40 F (4 C) rating by Maximum recommended tons based on pressure drop through the accumulator equal to 1.0 F (-17 C) temperature drop. Notes: 1. Minimum recommended tons should be no less than 15% of recommended tons to ensure positive oil return. 2. All data based on actual tons and is not related to horsepower. 3. Minimum evaporator temperature: -40 F (4 C). Minimum suction gas temperature through the accumulator: +10 F (-12 C). For operating conditions not within the rating data, please contact Parker before proceeding with installation.
6 Page 10 / C-1, Accumulators and Receivers Flow Capacity Flow Capacity in Tons (kw) Refrigerant 407C Refrigerant 404A/507C +40 F (+4 C) +20 F (-6 C) 0 F (-17 C) +40 F (+4 C) +20 F (-6 C) 0 F (-17 C) VA304S (6.7) 1.2 (4.2) 0.8 (2.8) 1.4 (4.8) 0.8 (2.9) 0.6 (1.9) VA314S 1.9 (6.7) 1.2 (4.2) 0.8 (2.8) 1.4 (4.8) 0.8 (2.9) 0.6 (1.9) VA315S 2.8 (10.0) 1.8 (6.4) 1.2 (4.2) 2.0 (7.2) 1.3 (4.4) 0.8 (2.9) VA325S 2.8 (10.0) 1.8 (6.4) 1.2 (4.2) 2.0 (7.2) 1.3 (4.4) 0.8 (2.9) VA326S (13.4) 2.4 (8.5) 1.6 (5.6) 2.7 (9.6) 1.7 (5.9) 1.1 (3.9) VA355S 2.8 (10.0) 1.8 (6.4) 1.2 (4.2) 2.0 (7.2) 1.3 (4.4) 0.8 (2.9) VA356S 3.8 (13.4) 2.4 (8.5) 1.6 (5.6) 2.7 (9.6) 1.7 (5.9) 1.1 (3.9) VA445SRD (10.0) 1.8 (6.4) 1.2 (4.2) 2.0 (7.2) 1.3 (4.4) 0.8 (2.9) VA446SRD (13.4) 2.4 (8.5) 1.6 (5.6) 2.7 (9.6) 1.7 (5.9) 1.1 (3.9) PA C 2.9 (10.2) 2.5 (8.8) 2.3 (8.0) 3.0 (10.6) 2.4 (8.4) 1.9 (6.7) PA C 2.9 (10.2) 2.6 (9.1) 2.3 (8.0) 3.0 (10.6) 2.5 (8.8) 2.0 (7.0) VA546SRD 3.8 (13.4) 2.4 (8.5) 1.6 (5.6) 2.7 (9.6) 1.7 (5.9) 1.1 (3.9) VA547SRD 6.9 (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VA557SRD 6.9 (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VA566SRD 3.8 (13.4) 2.4 (8.5) 1.6 (5.6) 2.7 (9.6) 1.7 (5.9) 1.1 (3.9) VA567SRD 6.9 (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VA577SRD 6.9 (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VA579SRD 11.2 (39.4) 7.1 (25.0) 4.7 (16.6) 8.1 (28.3) 4.9 (17.3) 3.3 (11.5) VPA5896SRD 3.8 (13.4) 2.4 (8.4) 1.6 (5.6) 2.7 (9.5) 1.7 (6.0) 1.1 (3.9) VPA5897SRD 6.9 (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VPA58116SRD 6.9 (24.3) 4.4 (15.5) 2.9 (10.2) 5.0 (17.6) 3.0 (10.6) 2.0 (7.0) VPA58117SRD 6.5 (22.9) 4.2 (14.8) 2.5 (8.8) 4.7 (16.5) 2.8 (9.8) 1.8 (6.3) VPA58127SRD 6.8 (23.9) 4.3 (15.1) 2.8 (9.8) 4.8 (16.9) 2.8 (9.8) 1.8 (6.3) VPA58157SRD 7.0 (24.6) 4.6 (16.2) 3.2 (11.3) 5.2 (18.3) 3.2 (11.3) 2.2 (7.7) VPA58177SRD 12.1 (42.6) 8.0 (28.1) 5.6 (19.7) 9.0 (31.7) 5.8 (20.4) 4.1 (14.4) VA599SRD 11.2 (39.4) 7.1 (25.0) 4.7 (16.6) 8.1 (28.3) 4.9 (17.3) 3.3 (11.5) VA5911SRD 17.8 (62.7) 11.3 (39.9) 7.5 (26.4) 12.8 (45.2) 7.8 (27.6) 5.2 (18.3) VA6107SRD (24.4) 4.4 (15.5) 2.9 (10.3) 5.0 (17.5) 3.0 (10.7) 2.0 (7.1) VA6109SRD (39.4) 7.1 (25.0) 4.7 (16.6) 8.1 (28.3) 4.9 (17.3) 3.3 (11.5) VA61111SRD (62.7) 11.3 (39.9) 7.5 (26.4) 12.8 (45.2) 7.8 (27.6) 5.2 (18.3) VA61511SRD 17.8 (62.7) 11.3 (39.9) 7.5 (26.4) 12.8 (45.2) 7.8 (27.6) 5.2 (18.3) VA61613SRD (95.1) 17.2 (60.4) 11.4 (40.1) 19.5 (68.4) 11.9 (41.8) 7.9 (27.7) Factors For Other Ratings Evaporator Temperature -20 F (-28 C) -40 F (-40 C) X Factor To find the capacity for -20 F (-28 C) and -40 F (-40 C) evaporator temperatures in tons, multiply the 40 F (4 C) evaporator temperature by the X factor. To find the minimum capacity in tons, multiply the 40 F (4 C) rating by Maximum recommended tons based on pressure drop through the accumulator equal to 1.0 F (-17 C) temperature drop. Notes: 1. Minimum recommended tons should be no less than 15% of recommended tons to ensure positive oil return. 2. All data based on actual tons and is not related to horsepower. 3. Minimum evaporator temperature: -40 F (4 C). Minimum suction gas temperature through the accumulator: +10 F (-12 C). For operating conditions not within the rating data, please contact Parker before proceeding with installation.
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