Refrigerant 410a pressure

All welded OEM pressure transmitter for use on refrigeration application with R22 and R410A refrigerant up to 400 psig. 17.609G Pressure Transmitter. 17-609G data sheet; Pressure Range: 0 – 400 psi g; Output: 4 – 20mA / 2 wire; Supply Voltage: 8 – 32V dc; Electrical Connection: Male & female plug ISO 4400

Refrigerant 410a pressure. Jan 3, 2024 · An R-410A Pressure-Temperature (PT) chart is a tool used in HVAC systems to determine the corresponding saturation temperature of the R-410A refrigerant at different pressures. This chart is essential for HVAC technicians as it helps in diagnosing and maintaining air conditioning systems.

Saturation Pressure-Temperature Data for R410A (psig)*. Temp (°F) Pressure. Temp (°C)

The recommended pressure for a home refrigerator using R134A refrigerant is between 2 psig and 150 psig. Readings that are higher or lower indicate an overcharged system. Although ...If you want to make the products you sell more appealing to your customers, check out the countertop display refrigerators for your store or bar. * Required Field Your Name: * Your... shows that R-454B is very close in pressure drop to R-410A systems (it is actually slightly lower in pressure drop for equal line sizes). As existing R-454B systems are placed into service in systems previously using R-410A, R-454B systems likely will . be able to do this without any pipe-size concerns. Constants for vapor pressure of saturated vapor (dew point), p g: A = –1.440004 E+00 E = –3.521484 E+00 B = –6.865265 E+00 F = –7.750000 E+00 C = –5.354309 E–01 X o = 2.086902 E–01 D = –3.749023 E+00 Because both pressure and temperature appear in the reduced form in the equation, the same constants can be used for either SI or ... If you want to make the products you sell more appealing to your customers, check out the countertop display refrigerators for your store or bar. * Required Field Your Name: * Your...Refrigerants - Physical Properties Physical properties of refrigerants - molecular weight, boiling, freezing and critical points. Refrigerants - Pressure vs. Temperature Charts Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A. Saturation Pressure-Temperature Data for R410A (psig)*. Temp (°F) Pressure.

Refrigerant pressure. Chart pressure 410a refrigerant temperature r410a pt tableNeed cooling fan advice on my truck 410a chart pressure temperature refrigerant r22 air hvac low side 422b 421a conditioning coupled ajn condenser unit century refrigerated efficienciesR410a pt chart: -60°f to +155°f pressure temperature chart.The normal pressure for a typical R-401A mini-split ranges from 110-140 psi. However, keep in mind that the working pressure depends on factors like cooling load and weather. …Table 7: Fail-safe switches for high pressure refrigerants (R410A, R744) PED 2014/68/EU approved according to EN 12263 Pressure Control type Low pressure (LP) High pressure (HP) Reset Contact type Code no. Range [inHg] [psig] Di€erential [psi] Range [psig] Di€erential [psi] Low pressure (LP) High pressure (HP) Connection ¼ in male ƒare 36 ...Genetron® AZ-20 - (R-410A) Widely accepted to replace R-22 in air conditioning and refrigeration applications. For new equipment — not for retrofits. Overview. Specifications. Resources. Save this page as PDF. Widely accepted to replace R-22 in air conditioning and refrigeration applications. For new equipment — not for retrofits.Refrigeration and Freezing - Refrigeration and freezing are probably the most popular forms of food preservation in use today. Learn more about refrigerarion and freezing. Advertis...Isobutane is derived from butane and is created by the isomerization of butane. R-600a is used for blending in a variety of other refrigerants mixes found in HCFC, HFC, and Hydrocarbon classifications. There are nearly twenty different blends with R-600a. (R-441A being one of them.)

R22 Refrigerant Pressure Temperature Chart. Pressure Temp Chart R-11, R-12, R-22, R123, R134A, R404A, R-500, R502. Using an HVAC refrigerant pressure temperature chart is necessary to be sure a unit is operating correctly. Below are three free pressure temperature charts that can be used to troubleshoot an HVAC unit.REFRIGERANT PRESSURE / TEMPERATURE CHARTS for R-22, R-410A, R-134A, R-404A REFRIGERANTS [PDF] Advantage Engineering, Inc. 525 East Stop 18 Road Greenwood, IN 46142USA, Tel: 317-887-0729 Web site: www.AdvantageEngineering.com Email: [email protected] are some reasons to buy a freezerless refrigerator? Find out 5 reasons to buy a freezerless refrigerator in this article. Advertisement Chances are pretty good that the fridge...4 Using Table 2, select the column which is closest to the measured vapor pressure. 5 Scroll down the column to find your calculated superheat. 6 Read the required vapor line temperature at the intersection. (°F) If the measured vapor line temperature does not agree with the required vapor line. 7 temperature, add refrigerant to lower ... Common refrigerants and their color codes. Refrigerants - Environmental Properties Refrigerants - Ozone Depletion (ODP) and Global Warming Potential (GWP). Refrigerants - Pressure vs. Temperature Charts Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A.

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Refrigerant Pressure - Temperature Chart. Pressure values are displayed for R-22, R-410a, R-407c, R-134a and R-404a refrigerants. Items Displayed in Red shows pressure in inches of Mercury. Items Displayed in Black shows pressure in pounds per inch gauge. Data points are reproduced based on available information.Temperature Pressure Chart | R-134A | R407C | R-404A | R-410A ... The refrigerant temperature pressure chart is a tool that is readily available yet rarely used ...View and Download Daikin R-410A technical data manual online. Outdoor units. R-410A air conditioner pdf manual download. Also for: Rxs-g2v1b. ... Sound Level Cooling Sound Power (nominal) Sound Pressure (Low) Sound Pressure (High) Heating Sound Pressure (Low) Sound Pressure (High) Refrigerant Type R-410A Charge Refrigerant Oil ...Genetron® AZ-20 - (R-410A) Widely accepted to replace R-22 in air conditioning and refrigeration applications. For new equipment — not for retrofits. Overview. Specifications. Resources. Save this page as PDF. Widely accepted to replace R-22 in air conditioning and refrigeration applications. For new equipment — not for retrofits.

What should my pressures be for 410A? Typically, for a properly charged R-410A system, the low-side (suction) pressure may range from 120 to 150 psi, and the …Forane 410A Pressure Temperature Chart Forane 410A, R-410A, Pressure Temperature Chart, PT Chart, HVAC, refrigeration, air conditioning, refrigerant gasRefrigerant Pressure-Temperature Home Back. Choose Refrigerant: R-410A R-22 °C °F: Psig-40-39-38-37-36 ...Freon™ Pressure/Temperature Chart App. The P/T Calculator provides technicians with refrigerant data on the go. Learn More. Sales & Support. Where to Buy; ... Freon™ 410A (R-410A) Refrigerant; Freon™ MO29 (R-422D) Refrigerant; Freon™ MO59 (R-417A) Refrigerant; Freon™ 123 (R-123) Refrigerant;Apr 14, 2019 · R410A Pressure Enthalpy Chart. Scroll down to download a PDF copy of the pressure enthalpy chart for both Metric and Imperial Units. These charts were provided courtesy of Danfoss, using their FREE CoolSelector 2 software. Alternative Refrigerants Evaluation Program (AREP) Compressor Calorimeter And System Drop In Tests With R-22 Alternatives By David S Godwin, Air-Conditioning & Refrigeration Institute (now AHRI) 18 March 1994 •AREP Results Led To Selection Of R134a, R404A, R407C & R410A In Various Applications •Higher Pressure Refrigerants Like R410A …Refrigerant pressure. Chart pressure 410a refrigerant temperature r410a pt tableNeed cooling fan advice on my truck 410a chart pressure temperature refrigerant r22 air hvac low side 422b 421a conditioning coupled ajn condenser unit century refrigerated efficienciesR410a pt chart: -60°f to +155°f pressure temperature chart.R-410A has been around for nearly ten years now but there are still so many questions asked about it that I thought I would take the time and put together a quick frequently asked question post. The goal of this is to provide you answers on some of the most common questions and hopefully on some of the less common ones. If I missed …

Apr 14, 2019 · R410A Pressure Enthalpy Chart. Scroll down to download a PDF copy of the pressure enthalpy chart for both Metric and Imperial Units. These charts were provided courtesy of Danfoss, using their FREE CoolSelector 2 software.

The equivalent pressures for common refrigerants are also listed. For zeotropic blends the pressure of the saturated liquid (also called the bubble point) ... for R410A Bar g Air cooled 55OC 13.9 . 24.8 . 23.5 : 33.0 . Water cooled 8. O. C above the max leaving water temp . Pressures dependent on water temperature.Apr 14, 2019 · R410A Pressure Enthalpy Chart. Scroll down to download a PDF copy of the pressure enthalpy chart for both Metric and Imperial Units. These charts were provided courtesy of Danfoss, using their FREE CoolSelector 2 software. Temp. Temp. Temp. Temp. Temp. Temp. Temp. Temp. ( F) Liquid Vapor ( C) ( F) Liquid Vapor ( C) ( F) Liquid Vapor ( C) ( F) Liquid Vapor ( C)-49 5.5 5.4 -45.0 1 49.7 49.5 -17.2 51 145.8 145.2 10.6 101 323.1 322.1 38.3-48 6.0 5.9 -44.4 2 51.1 50.8 -16.7 52 148.4 147.9 11.1 102 327.7 326.7 38.9R410A Pressure Temperature Chart (In Fahrenheit) Printable PDF Temp er atu r e (° F ): R410A P r essu r e (p si g ):-60 ° F 0. 9 psi g-55 ° F 1. 8 psi g-50 ° F 4. 3 psi g-45 ° F 7. 0 psi g-40 ° F 10. 1 psi g-35 ° F 13. 5 psi g-30 ° F 17. 2 psi g-25 ° F 21. 4 psi g-20 ° F 25. 9 psi g-18 ° F 27. 8 psi gFreon™ 407C and Freon™ 410A Refrigerant Descriptions Freon™ 407C is a non-ozone depleting blend of three hydrofluorocarbon (HFC) refrigerants. It exhibits performance characteristics similar to R-22. Freon™ 410A is a non-ozone depleting blend of two HFC refrigerants. It exhibits higher pressures and refrigeration capacity than R-22.Using the formulas provided: Condensing Temperature = 35°C + 10°C = 45°C. Evaporation Temperature = 27°C – 20°C = 7°C. These calculations serve as rough estimates. To ascertain the operational pressures of the compressor: For R22 refrigerant: High pressure is approximately 1.75 MPa. Low pressure is approximately 0.6 MPa.A. This Section includes refrigerant piping used for VRV/VRF air-conditioning applications. 1.2 PERFORMANCE REQUIREMENTS A. Line Test Pressure for Refrigerant R-410A: 1. Suction (low pressure gas) Lines: 550 psig, or per equipment manufacturers recommendation. 2.First and foremost, R-410A’s higher vapor pressures mean that careful attention must be paid to the design pressure rating of handling and storage equipment, including recovery and storage cylinders. For R-410A, a working pressure capability of at least 400 psi is recommended (this includes recovery cylinders).Standard DO T recovery cylinders ...

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OPERATING PRESSURE POINTS “Systems using R-410A operate at higher pressures [than R-22],” points out the Field Diagnostics team. “For example, to produce an evaporating temperature of 40 degrees F and a condensing temperature of 115 degrees, the suction and head pressures would be 83 psia and 257 psia in an R-22 system, while they would be 133 and 406 psia, respectively, in an R-410A ... Why R-410A Is Being Phased Out. Because R-410A operates at such high pressures, there is an increased risk of an environmentally harmful refrigerant leak during maintenance and repair work. The R-410A phase-out means new HVAC systems will use more sustainable refrigerants. The American Innovation and Manufacturing (AIM) Act of 2020 directed ... shows that R-454B is very close in pressure drop to R-410A systems (it is actually slightly lower in pressure drop for equal line sizes). As existing R-454B systems are placed into service in systems previously using R-410A, R-454B systems likely will . be able to do this without any pipe-size concerns. With R-410A, the same unit will operate under the same conditions with a suction pressure of 118 psi and a discharge pressure of 400 psi, as shown in Figure 1 on the next page.R410a is part of the hydrofluorocarbon (HFC) class of refrigerants and is composed of an equal amount of R125 and R32. Its chemical formula is CH₂F₂ + CHF₂CF₃ and its cylinders are colored rose. R410a was discovered by Honeywell and was granted a patent in 1991. It is the most used refrigerant in home and commercial ACs in the US, …Thermophysical properties - Properties of refrigerant R410a. Precaution. R-410A cannot be used in R-22 service equipment because of higher operating pressures (approximately …What pressure should 410A be at 80 degrees? R-410A Pressure Temperature Chart. PSIG(Pounds per Square Inch Gauge) R-410A (HFC) °Fahrenheit; 78: 20: 80: 21: 85: 24: 90: 26: ... The pressure in the bottle is much higher than the pressure on the low side of the system so if they are connected, refrigerant will exit the bottle and …R‐410A. Version 2.5 Revision Date 04/18/2022 Document 10005001 . Page 1 of 8 SECTION 1 ‐ CHEMICAL PRODUCT AND COMPANY IDENTIFICATION . PRODUCT NAME : R‐410A OTHER NAME : Difluoromethane, Pentafluoroethane PRODUCT USE : Refrigerant gas, for professional use only Restrictions : Do not use product for anything …Lower GWP (465) compared to R32 and R410a; Close operating pressures and temperature with R410-a, making transition easier Other approved R410a replacements. In addition to these two refrigerants, the EPA’s SNAP Rule 32 identifies four more A2L refrigerants as approved alternatives to R410-A: R452B; R454A; R454C; …Refrigerant Pressure - Temperature Chart. Pressure values are displayed for R-22, R-410a, R-407c, R-134a and R-404a refrigerants. Items Displayed in Red shows pressure in inches of Mercury. Items Displayed in Black shows pressure in pounds per inch gauge. Data points are reproduced based on available information.Freon™ 407C and Freon™ 410A Refrigerant Descriptions Freon™ 407C is a non-ozone depleting blend of three hydrofluorocarbon (HFC) refrigerants. It exhibits performance characteristics similar to R-22. Freon™ 410A is a non-ozone depleting blend of two HFC refrigerants. It exhibits higher pressures and refrigeration capacity than R-22. ….

When the liquid and vapor exist at the same place at a given temperature in a closed system, they have a known pressure. We call this the pressure-temperature (P-T) relationship. This relationship will exist as long as you have at least a droplet of liquid in a closed system. However, the refrigerant must be at its saturation point.OPERATING PRESSURE POINTS “Systems using R-410A operate at higher pressures [than R-22],” points out the Field Diagnostics team. “For example, to produce an evaporating temperature of 40 degrees F and a condensing temperature of 115 degrees, the suction and head pressures would be 83 psia and 257 psia in an R-22 …Does alcohol raise blood pressure? Learn about how alcohol effects blood pressure at HowStuffWorks. Advertisement Alcohol, as most of us know, can be a lot of fun. But it's fun tha...Refrigeration and Freezing - Refrigeration and freezing are probably the most popular forms of food preservation in use today. Learn more about refrigerarion and freezing. Advertis...2.7 lbs./min./ton for R-410A 30 parts per million for R-502 5 Since there is currently no ARI standard for R-744, values are based on 1 ton of refrigeration at 20°F liquid refrigerant temperature and -20°F saturated vapor temperature. Liquid Refrigerant Holding Capacity-Ounces Unit Size R-12 R-134a/ R-450A/ R-513A R-22/ R-448A/ R-449AThe normal pressure for a typical R-401A mini-split ranges from 110-140 psi. However, keep in mind that the working pressure depends on factors like cooling load and weather. …You can make ads in the Engineering ToolBox more useful to you! The relation between temperatures and boiling pressuress for. R-717 : Ammonia. R-134a : Tetrafluoroethane. R-22 : Hydrochlorofluorocarbon. R-507 : R-290 : Propane. R-744 : CO 2. are indicated in the diagrams below:The purpose of refrigerator coils is to dissipate heat, not suck up electricity—or cash—out of your wallet. But that's what happens if you don't clean off those bad boys once in a ...1. Optimal Cooling. When the low side pressure operates within the recommended range for 410a, your system can efficiently absorb heat from your indoor environment. Any deviation from this range might compromise the cooling efficiency, leaving certain areas less cooled than others. 2.R-410A HFC 72.6-61 691.8 158.3 34.5 67.74 0.261 116.8 0.3948 0.1953 0 2088 A1 0.2 Refrigerant Reference Guide 43 5th Edition 2010 R-410A Technical Guidelines Applications: Air conditioning equipment and heat pumps. Only for newly manufactured equipment, not for retrofitting R-22 systems Performance: Presures are 60% higher than R-22, therefore ... Refrigerant 410a pressure, psig °f psig °f psig °f psig °f psig °f 12; –37.7. 114, Alternative Refrigerants Evaluation Program (AREP) Compressor Calorimeter And System Drop In Tests With R-22 Alternatives By David S Godwin, Air-Conditioning & Refrigeration Institute (now AHRI) 18 March 1994 •AREP Results Led To Selection Of R134a, R404A, R407C & R410A In Various Applications •Higher Pressure Refrigerants Like R410A …, Freon™ 409A carries an ASHRAE A1 safety classification and blends R-22, R-142b, and R-124. It can be used in medium- and low-temperature positive displacement equipment. Used as a retrofit for R-12 in stationary positive displacement air-conditioning (AC) and refrigeration systems, Freon™ 409A works in: Walk-in coolers. Beverage dispensers., Saturation Pressure-Temperature Data for R410A (psig)*. Temp (°F) Pressure. Temp (°C), For more information on Freon™ refrigerants, visit freon.com The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. ... 410A Refrigerant (R-410A) P-H Diagram (ENG …, Both older R-22 and R-134 operate at lower pressures than R-410A. R22 Refrigerant Pressure Rules of Thumb Typical Off, Low, High side R22 Pressures & Temperatures. On a properly-charged and working air conditioning system using R-22 refrigerant. Low pressure refrigerant switches on Carrier HVACR typically open at 50 psi and close at 100 psi., Oct 13, 2017 · What is R-410A? R-410A is an HFC refrigerant that is a blend of the HFC R-32 and the HFC R-125. This refrigerant was designed to be a safe, non-toxic, non-flammable, and reliable alternative to the HCFC R-22. It was invented in 1991 but did not begin to see real popularity until the 2000’s. , Does alcohol raise blood pressure? Learn about how alcohol effects blood pressure at HowStuffWorks. Advertisement Alcohol, as most of us know, can be a lot of fun. But it's fun tha..., R22 Refrigerant Pressure Temperature Chart. Pressure Temp Chart R-11, R-12, R-22, R123, R134A, R404A, R-500, R502. Using an HVAC refrigerant pressure temperature chart is necessary to be sure a unit is operating correctly. Below are three free pressure temperature charts that can be used to troubleshoot an HVAC unit., Cooling Pressure (PSI) @ Service Port (Tolerance +/‐5) Outdoor Temp (°F) Refrigerant Pressure vs. Temperature Charts for Pioneer Split Systems (R410a) 68 115 119 123 127 131 135 139 143 147 71 120 124 128 132 136 140 144 148 152 ‐ m p (°F) 74 125 129 133 137 141 145 149 153 157 , To satisfy industry regulations, the HVAC industry is transitioning from Puron (R-410A) refrigerant to Puron Advance (R-454B) by the year 2023. We talk about the implications for homeowners. Unless you work in HVAC (Heating, Ventilation, and Air Conditioning), you probably won’t need to know what R-454B refrigerant is, or why it’s a big deal., When the liquid and vapor exist at the same place at a given temperature in a closed system, they have a known pressure. We call this the pressure-temperature (P-T) relationship. This relationship will exist as long as you have at least a droplet of liquid in a closed system. However, the refrigerant must be at its saturation point., R22 can absorb and release less heat which can lead to compressor burnout over time. On the other hand, R-410A can handle more heat allowing the compressor to run cooler. The compressors used in new AC units are built to withstand greater pressure that is caused by R-410A refrigerant., Here’s a step-by-step guide on how to read a refrigerant P-H chart: 1. Understand the axes: The P-H chart typically has the pressure (P) axis on the y-axis and the enthalpy (H) axis on the x-axis. The pressure is usually measured in units like psi, kPa, or bar, while the enthalpy is measured in units like Btu/lb, kJ/kg, or kcal/kg., OPERATING PRESSURE POINTS “Systems using R-410A operate at higher pressures [than R-22],” points out the Field Diagnostics team. “For example, to produce an evaporating temperature of 40 degrees F and a condensing temperature of 115 degrees, the suction and head pressures would be 83 psia and 257 psia in an R-22 system, while they would be 133 and 406 psia, respectively, in an R-410A ..., A refrigerator is one of the few appliances that runs continuously, day or night, keeping your food cold. Learn how to repair a refrigerator. Advertisement A refrigerator is one of..., R410A Pressure Enthalpy Chart. Scroll down to download a PDF copy of the pressure enthalpy chart for both Metric and Imperial Units. These charts were provided courtesy of Danfoss, using their FREE CoolSelector 2 software., Refrigerant pressure. Chart pressure 410a refrigerant temperature r410a pt tableNeed cooling fan advice on my truck 410a chart pressure temperature refrigerant r22 air hvac low side 422b 421a conditioning coupled ajn condenser unit century refrigerated efficienciesR410a pt chart: -60°f to +155°f pressure temperature chart., 2.7 lbs./min./ton for R-410A 30 parts per million for R-502 5 Since there is currently no ARI standard for R-744, values are based on 1 ton of refrigeration at 20°F liquid refrigerant temperature and -20°F saturated vapor temperature. Liquid Refrigerant Holding Capacity-Ounces Unit Size R-12 R-134a/ R-450A/ R-513A R-22/ R-448A/ R-449A, Jan 13, 2021 ... R-22 and R-410A Operating Pressures on Air Conditioners! Checking ... What Should my AC Pressures Be for R410A Refrigerant. Benjamin Sahlstrom ..., High-Pressure Appliance (prior to March 12, 2004, referred to by the EPA as higher-pressure appliance) An appliance that uses a refrigerant with a liquid phase saturation pressure between 170 psia and 355 psia at 104°F. This definition includes but is not limited to appliances using R-410A, R-22, R-401B, R-402A/B, R-404A, R-, Product Information. FreonTM 410A is a non-ozone depleting high efficiency hydrofluorocarbon (HFC) refrigerant. FreonTM 410A has higher cooling capacity and …, , psig °f psig °f psig °f psig °f psig °f 12; –37.7. 114, Residential 410a system as follows: Liquid line: ~400psi. ~ 30 subcool. Vapor line: 105psi. ~30 superheat. The LLFD does not feel cold. The TXV is backed all the way out., TEMPERATURE - PRESSURE CHART FOR R-22, R-410A, R-407C, R-134A & R-404A REFRIGERANTS FYI #289 9/17/2009. updated 10/10/2012. Data points are reproduced based on available information. Advantage assumes no responsibility or liabililty for data errors. ADVANTAGE Engineering, Inc. 525 East Stop 18 Road Greenwood, IN 46142 …, R-410A Refrigerant 25 LB Free Continental US Shipping 100% Virgin Factory Sealed Satisfaction Guaranteed Refrigerant R410A is used in new equipment designed to run at high pressures. ... it can only be used in air conditioning and heat pump systems specifically designed to handle the refrigerant’s high pressure., Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A., Constants for vapor pressure of saturated vapor (dew point), p g: A = –1.440004 E+00 E = –3.521484 E+00 B = –6.865265 E+00 F = –7.750000 E+00 C = –5.354309 E–01 X o = 2.086902 E–01 D = –3.749023 E+00 Because both pressure and temperature appear in the reduced form in the equation, the same constants can be used for either SI or ... , erties of R-410A are very similar to those for R-22 as well as most of today’s HFC refrigerants. The major difference is the higher pressure. 2. Follow general safety guide-lines. Refrigerants can be used safe-ly when recommended safety and handling practices are followed. Pressure, frostbite, overexposure to vapors and deliberate inhalation are, r-410a pressure temperature chart psig f° psig f° psig f° psig f° psig f° psig f° 12 -37.7 114 37.8 216 74.3 318 100.2 420 120.7 522 137.6 14 -34.7 116 38.7 218 74.9 320 100.7 422 121 524 137.9 16 -32.0 118 39.5 220 75.5 322 101.1 424 121.4 526 138.3, Constants for vapor pressure of saturated vapor (dew point), p g: A = –1.440004 E+00 E = –3.521484 E+00 B = –6.865265 E+00 F = –7.750000 E+00 C = –5.354309 E–01 X o = 2.086902 E–01 D = –3.749023 E+00 Because both pressure and temperature appear in the reduced form in the equation, the same constants can be used for either SI or ... , Cooling Pressure (PSI) @ Service Port (Tolerance +/‐5) Outdoor Temp (°F) Refrigerant Pressure vs. Temperature Charts for Pioneer Split Systems (R410a) 68 115 119 123 127 131 135 139 143 147 71 120 124 128 132 136 140 144 148 152 ‐ m p (°F) 74 125 129 133 137 141 145 149 153 157