R22 subcooling chart

a refrigerating system, exclusive of any subcooling or superheating. This term usually describes condensation or evaporation of a zeotrope. ODP – ozone depletion potential – degree to which a substance can degrade the ozone layer; all measurements relative to a similar mass of CFC-11, which is indexed to 1.0.

a refrigerating system, exclusive of any subcooling or superheating. This term usually describes condensation or evaporation of a zeotrope. ODP – ozone depletion potential – degree to which a substance can degrade the ozone layer; all measurements relative to a similar mass of CFC-11, which is indexed to 1.0. 11 Jul 2014 ... out of the evaporator reads around 62 oF. I also see that the pressures are extremely hight for R-22. the label says 12.5 amp for the compressor ...Subcooling Charging Method - TXV (Expansion Valve) R410A & R22. Subcooling is defined as: The temperature of a liquid refrigerant when it is cooled below its condensing …The pressure-enthalpy chart, as shown in Fig. 2, displays all the pertinent properties for a given refrigerant (in this example R22). The bubble to the left is the portion of the diagram where the refrigerant is in the saturated condition. The blue line on the left of the bubble represents the 100% saturated liquid line,Please note that in converting enthalpy and entropy from SI to I/P units, = 0 at –40°F for I/P units). In the conversion equation below, H (ref) and S (ref) are the saturated liquid enthalpy and entropy at –40°C. For Suva® 410A, H (ref) = …EXAMPLE 2. CHECKING SUBCOOLING. Subcooling on systems that use thermostatic expansion valve (TXV) is approximately 10°F to 18°F. To check subcooling on a R-22 system, I will need to attach a thermometer near the liquid line at the condenser. Suppose my temperature reading is 90°F. I would then take the head pressure.

How to check, measure, and read superheat and subcooling on a central air conditioner unit. In this video I do not go into the details of superheat and subco... Description. The model ASX14 superheat and subcooling accessory head measures refrigerant pressure and temperature simultaneously. It then calculates and displays superheat or subcooling. It has a 1/4” industry standard fitting for actual pressure. A pipe clamp thermocouple is included for temperature. Select R22 or R410A. Example of how to fix a 3 ton 16 SEER AC unit running on R-22 freon that has high superheat and low subcooling: Add R-22 refrigerant (but only after you fix the leak, more below). To simplify this, we can say that: High Superheat = Amount of refrigerant in the evaporator coil is too low. Low Subcooling = Amount of refrigerant in the condenser ...How to measure SUPERHEAT and SUBCOOLING! HVAC/R Training Video.How to calculate SUPERHEAT and SUBCOOLING on your air conditioner or refrigerator? R22 R410a R...Txv charging subcooling charge charts performance curve cooling systems system 30deg exception willR 22 r22 refrigerant charging chart gauge set guide n R22 subcooling chart calculator superheat charging conditioning air ebayR-11 pt chart. Check Details 21 new r22 charging chart. Superheat charging chart- how to find target superheat and ...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 75.5 322 101.1 424 121.4 526 138.3R 404A and later R407c may replace R22 in some applications. Below this table of example refrigerant operating pressures for R-22, we provide links to complete refrigerant …Units manufactured after 7/09 used this subcooling chart. Check out the 036 unit at 12 SC. Then Lennox updated the chart with this update on 5/13. Somehow a 036 unit goes from 12 SC to 4 SC without any changes to the product. So I am charging a 13ACX-036 per the new label at 4 SC.

The R22 PT chart, or Pressure-Temperature chart, is used to determine the saturation temperature of R22 refrigerant at a specific pressure, and vice versa. It’s an essential tool for HVAC and refrigeration technicians to diagnose system issues, determine superheat and subcooling values, and correctly charge refrigeration systems.Refrigerant Pressure Temperature Chart - PT Chart for R-410A, R-134A, and R-22. These are currently the three most widely used refrigerants on the market today for HVAC applications in residential and commercial use. R-22 refrigerant is the king and used widely in the residential and commercial markets followed by R-134A which is used in ...The R22 PT chart, or Pressure-Temperature chart, is used to determine the saturation temperature of R22 refrigerant at a specific pressure, and vice versa. It’s an essential tool for HVAC and refrigeration technicians to diagnose system issues, determine superheat and subcooling values, and correctly charge refrigeration systems.Apr 8, 2020 · Subcooling is a measurement of temperature DECREASE of a liquid below its saturation (mixed liquid/vapor) temperature at a given pressure. For example, water boils at 212° Fahrenheit at sea level (atmospheric pressure of 14.7 PSIA). If water is 212°F and at atmospheric pressure at sea level, you can be sure it is at saturation, which means it ... Description. The model ASX14 superheat and subcooling accessory head measures refrigerant pressure and temperature simultaneously. It then calculates and displays superheat or subcooling. It has a 1/4” industry standard fitting for actual pressure. A pipe clamp thermocouple is included for temperature. Select R22 or R410A. 9,546. Post Likes. Subcooling should be around 12-15, but you need to measure your superheat to see what's happening in the system. those pressures seem low for 90 degrees, but without more readings it a guess. SH/SC,ambient, delta t,ect.

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level. See the pressure-temperature charts in this bulletin to compare pressures and temperatures, to calculate superheat or subcooling for the refrigerant. WARNING: Liquid refrigerant entering the compressor at any time during system operation can lead to compressor oil level problems and rapid compressor failure. 8. Monitor oil levels.-40-39-38-37-36-34-33-32-31-30-29-28-27-26-24-23-22-21-20-19-18-17-16-14-13-12-11-10-9-8-7-6-4-3-2-1: 0: 1: 2: 3: 4: 6: 7: 8: 9: 10: 11: 12: 13: 14: 16: 17: 18: 19 ...Here is a table with these causes that will help us understand why we get low superheat normal subcooling: Low Superheat Causes: Non-Normal Subcooling Causes (High Or Low): Indoor airflow (CFMs) is too low. Oversized AC unit. Outdoor airflow is too low (or condenser coils heat exchange is impeded). High refrigerant charge (overcharged AC unit).This table represents a pressure temperature chart for R134A. R-134A is a refrigerant frequently used in automobile air conditioning. Additionally, for larger chilled water systems in commercial and industrial chilled water systems. Furthermore, R-134A is an HFC or hydrofluorocarbon refrigerant and, as noted, is used for automotive air ...May 26, 2023 · PT charts are most often used for three purposes: to set a coil pressure so that the refrigerant produces the desired temperature, to check the amount of superheat above the saturated vapor condition at the outlet of the evaporator and to check the amount of subcooling below the saturated liquid condition at the end of the condenser.

By ensuring the correct subcooling levels, the Goodman Subcooling Chart helps optimize your HVAC system’s performance, leading to better comfort and energy efficiency. Prolonging Equipment Life Proper subcooling levels can extend the life of your system by reducing wear and tear and preventing potential damage.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 75.5 322 101.1 424 121.4 526 138.325 Apr 2017 ... We'll identify different superheat chart measuring systems like the R22 superheat chart ... subcooling is the correct method of ... chart. For ...R410A 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 gSubcooling Charging Method - TXV (Expansion Valve) R410A & R22 Step 3 – subtract required subcooling (Step 1) from converted temperature (Step2) – This is the required liquid line temperature. Step 4 – Measure liquid line temperature. ... Superheat Charging Chart - Cooling - non-TXV - R410A & R22 www.hvacsalesandsupply.com. Title ...21 Jan 2014 ... System Charging - R22, TXV, Low Charge ... How To Check Superheat & Subcooling On An HVAC System ... Charging Chart Basics. Ron Walker•47K views · 3 ...R 404A and later R407c may replace R22 in some applications. Below this table of example refrigerant operating pressures for R-22, we provide links to complete refrigerant …Don't be fooled by an abridged chart with missing information, tidbits of random formulas and rule of thumb calculations all crammed on to one chart. The HVAC 3-Pack comes with 3 charts. One for sizing ductwork, one for calculating superheat/subcooling on R-22 systems and one for calculating superheat/subcooling …In this HVAC Training Video, I show you How to Read the Refrigerant P/T Chart for the Pressure-Temperature Relationship. This is used to determine the Temper...charged to 7 to 9 ºF subcooling at the indoor unit. 7. Maximum equivalent length of line set is: a. 250 feet (76.2 m) for single stage units with scroll or reciprocating compressors. b. 150 feet (45.7 m) for single stage units with rotary compressors. c. 150 feet (45.7 m) for two stage units. 8. Maximum linear length of line set is: a.

'HVAC Charts R22 Subcooling Calculator Large View April 20th, 2018 - R 22 Superheat amp Subcooling Calculator chart used for calculating superheat for a NON TXV system and the other side is a slide chart used to calculate subcooling''Rheem R 410A Installation Instructions Manual

Target subcooling at 80°F = 11.8°F. Target subcooling at 90°F = 11.9°F. Target subcooling at 100°F = 11.9°F. Target subcooling at 100°F = 12.1°F. You can see that this range (from 11.7°F to 12.1°F) is very tight; only 0.4°F difference between very low 70°F outdoor temperature and very high 110°F outdoor temperature.This item: HVAC Chart 3 Pack, R-22 Superheat Subcooling Calculator, R-410a Superheat Subcooling Calculator and Duct Calculator $19.99 $ 19 . 99 Get it as soon as Friday, Dec 15High Subcooling Causes: Low refrigerant charge (undercharged system). Restriction in the liquid line (usually ice). Indoor airflow (CFMs) is too high. Indoor heat load is too high. Metering device (TXV, AEV, or piston) is underfeeding. High refrigerant charge (overcharged system). Restriction in the liquid line (usually ice). Metering device ...'HVAC Charts R22 Subcooling Calculator Large View April 20th, 2018 - R 22 Superheat amp Subcooling Calculator chart used for calculating superheat for a NON TXV system and the other side is a slide chart used to calculate subcooling''Rheem R 410A Installation Instructions ManualJul 27, 2020 · The best answer is—as usual—whatever the manufacturer says it should be. If you really NEED a general answer, you can generally expect: High Temp or A/C systems to run 6-14°F of superheat. Medium Temp – 5-10°F. Low Temp – 4-10°F. Some ice machines and other specialty refrigeration may be as low as 3°F of superheat. May 9, 2021 · This 3D video shows setting a charge by subcool on a TXV system In 3D. Learn how to charge a TXV air conditioner or heat pump using the sub cooling method wi... In this HVAC Training Video, I show you How to Read the Refrigerant P/T Chart for the Pressure-Temperature Relationship. This is used to determine the Temper...25 Apr 2017 ... We'll identify different superheat chart measuring systems like the R22 superheat chart ... subcooling is the correct method of ... chart. For ...Robo stated it clear, the normal superheat for a residential system can and will vary and some charts go even further than he stated 2-45 degrees. That answer above drives the point, if you do not know the evaporator load, you can not predict the superheat. Reply. 06-02-2011, 06:58 PM #14. hvacvegas.

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Description. The model ASX14 superheat and subcooling accessory head measures refrigerant pressure and temperature simultaneously. It then calculates and displays superheat or subcooling. It has a 1/4” industry standard fitting for actual pressure. A pipe clamp thermocouple is included for temperature. Select R22 or R410A.Charts are a powerful tool for visualizing data and conveying information in a clear and concise manner. Whether you’re presenting sales figures, tracking progress, or comparing da...Calculating Superheat. Measure the low-side pressure using your gauge. Convert pressure to temperature using an app, slide, or chart. Measure the suction line temperature where it leaves the condensing unit, staying 4-6 inches from the compressor.Here is a table with these causes that will help us understand why we get low superheat normal subcooling: Low Superheat Causes: Non-Normal Subcooling Causes (High Or Low): Indoor airflow (CFMs) is too low. Oversized AC unit. Outdoor airflow is too low (or condenser coils heat exchange is impeded). High refrigerant charge (overcharged AC unit). R22 Alternatives. R32. R404A. R404A Alternatives. R407C. R410A. R454B. ... Subcooling Calculator. This tool is only available on devices with appropriate screen size. In this HVAC Video, I go over what Subcooling to set an Air Conditioning System to if the rating plate is worn off. I also go over how to figure out what ref...But if you take a charging chart and plug in the numbers, it comes out the same. +/- a cou [ple of degrees. example: Carrier R22 chart wet bulb 66 condenser 90 required Sh 13 @70 psi suction. 3 x 66=198 198-80= 118 118 - 90=28 28/2 =14 sh Don't know why but it works. Doug.Mar 21, 2023 · With our newfound knowledge of how to read the P-H diagram, we can easily see that the compressor increases the pressure of the refrigerant, since the line is moving up. The compressor also superheats the refrigerant a bit, since the line moves out to the right of the saturation dome. Point 2: Here’s our condenser line. charged to 7 to 9 ºF subcooling at the indoor unit. 7. Maximum equivalent length of line set is: a. 250 feet (76.2 m) for single stage units with scroll or reciprocating compressors. b. 150 feet (45.7 m) for single stage units with rotary compressors. c. 150 feet (45.7 m) for two stage units. 8. Maximum linear length of line set is: a.Apr 22, 2024 · The primary tool for measuring superheat and subcooling is a superheat/subcool meter or gauge, available from various brands in a price range of $70 to $250. Our research suggests looking for a gauge with presets for commonly used refrigerants like R22, R410a (Puron), R134a, and R404a to simplify the process. ….

Pressure Temperature Charts °F °C R-22 60 15.6 102 65 18.3 111 70 21.1 121 75 23.9 132 80 26.7 144 85 29.4 156 90 32.2 168 95 35.0 182 100 37.8 196 105 40.6 211 110 43.3 226 115 46.1 243 120 48.9 260 125 51.7 278 130 54.4 297 135 57.2 317 140 60.0 337 145 62.8 359 150 65.6 382 Vapor Pressure in PSIGHere is a table with these causes that will help us understand why we get low superheat normal subcooling: Low Superheat Causes: Non-Normal Subcooling Causes (High Or Low): Indoor airflow (CFMs) is too low. Oversized AC unit. Outdoor airflow is too low (or condenser coils heat exchange is impeded). High refrigerant charge (overcharged AC unit).Welcome to the HVAC Charts On-line Store. Shop our store for HVAC Charts, cooling calculators and related HVAC products. We have recently added a new category of products, featuring tech tools designed specifically for the HVAC Technician.We take pride in offering you a unique product for a fair price. All of our products are shipped to you …May 9, 2021 · This 3D video shows setting a charge by subcool on a TXV system In 3D. Learn how to charge a TXV air conditioner or heat pump using the sub cooling method wi... May 14, 2014 · But if you take a charging chart and plug in the numbers, it comes out the same. +/- a cou [ple of degrees. example: Carrier R22 chart wet bulb 66 condenser 90 required Sh 13 @70 psi suction. 3 x 66=198 198-80= 118 118 - 90=28 28/2 =14 sh Don't know why but it works. Doug. If the metering device is a fixed orifice such as a piston or capillary tube, the refrigerant charge of the system can be checked with Total Superheat. If the metering device is a TXV then the refrigerant …from $17.89. Other New from $17.89. Select delivery location. See All Buying Options. R410a Superheat Subcooling Calculator Charging Chart Cards – January 1, 2007. by HVACcharts (Author) 4.4 211 ratings. See all formats and editions. This is a very useful tool that takes the guess work out of charging cooling systems.Actual Line Temp – Sat Temp = Total Superheat. 55°F - 37°F = 18°F. 18°F of Total Superheat > 9°F Target Superheat = Undercharged. Since the actual total superheat measured is higher than the target superheat, we would need to add refrigerant a little at a time until the superheat is the same as the target superheat.Apr 22, 2024 · The primary tool for measuring superheat and subcooling is a superheat/subcool meter or gauge, available from various brands in a price range of $70 to $250. Our research suggests looking for a gauge with presets for commonly used refrigerants like R22, R410a (Puron), R134a, and R404a to simplify the process. 145 °F. 571.7 psig. 150 °F. 607.6 psig. 155 °F. 645.2 psig. You can see that this R410A pressure chart includes high and low side pressures at temperatures ranging from -60 °F to 155 °F. Higher temperature equates to higher pressure. Here are 4 examples of how you can use this chart: R22 subcooling chart, , 1. a) Most walk-in coolers and freezers use a TX valve to regulate the flow of refrigerant into the evaporator. If the superheat is low the TX valve will allow refrigerant to flow into the evaporator at a rate that exceeds the capacity of the evaporator and as a result liquid will enter the suction line., 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 …, HVAC Chart 3 Pack, R-22 Superheat Subcooling Calculator, R-410a Superheat Subcooling Calculator and Duct Calculator. 4.6 out of 5 stars ... Laminated / PT Chart; R22 / R410A; These HVAC tools are used for assistance in sizing ductwork for HVAC systems. Replaces / Supersedes: PTCHART PT CHART Pressure Chart …, Arkema is happy to provide HVACR contractors, educators, and students with pocket Pressure Temperature (PT) charts to use on-the-go . Our PT charts feature products used on a daily basis, including R-22, R-134a, R-404A, R-410A, and our R-22 retrofit product - Forane ® 427A (R427A) - The EASY RETROFIT™. Download our PDF PT Chart!, Actual Line Temp – Sat Temp = Total Superheat. 55°F - 37°F = 18°F. 18°F of Total Superheat > 9°F Target Superheat = Undercharged. Since the actual total superheat measured is higher than the target superheat, we would need to add refrigerant a little at a time until the superheat is the same as the target superheat., 25 Apr 2017 ... We'll identify different superheat chart measuring systems like the R22 superheat chart ... subcooling is the correct method of ... chart. For ..., What should my Subcooling and Superheat be? For subcooling a ballpark range may be somewhere inbetween 10-15 degrees F. For superheat it could be 12-20 degrees F. Check with the manufacturer though. Many units have a charging chart, behind the name plate on the condensing unit, use this first. , -40-39-38-37-36-34-33-32-31-30-29-28-27-26-24-23-22-21-20-19-18-17-16-14-13-12-11-10-9-8-7-6-4-3-2-1: 0: 1: 2: 3: 4: 6: 7: 8: 9: 10: 11: 12: 13: 14: 16: 17: 18: 19 ... , High Subcooling Causes: Low refrigerant charge (undercharged system). Restriction in the liquid line (usually ice). Indoor airflow (CFMs) is too high. Indoor heat load is too high. Metering device (TXV, AEV, or piston) is underfeeding. High refrigerant charge (overcharged system). Restriction in the liquid line (usually ice). Metering device ..., 13 May 2016 ... Exactly What is Superheat and Subcooling? Shown on a Live AC Unit! AC ... How To Refill R22 AC With Subcooling Method. Word of Advice TV•330K ..., R22 & r410a superheat subcooling charging chart duct calculator freon puronSuperheat subcooling r410a Hvac chartsR22 chart superheat charging temperature line system orifice curves split liquid subcooling r410a cooling tables compressor metering txv device york., May 18, 2017 · To measure liquid subcooling: 1. Attach your gauge manifold to the liquid line service port. If you use a quick-connect fitting on the end of your hose, make sure it’s a low-loss fitting. I’ve seen some quick-connect fittings that allow pressure loss, which can cause inaccuracies in the charging procedure. , This document will explain how to read a pressure temperature chart for super-heat and sub-cooling calculations. Product line: All DX Cooling units. …, Cooking meat can be a tricky task, especially if you don’t know the basics. Fortunately, there are meat cooking charts that can help you get the job done right. In this article, we..., Based on historic sliding cardboard charge calculators, this app allows contractors to easily calculate the correct system refrigerant charge for R-22, R-410A, R-32, R-407C, R-134a, R-452B, R-454B, R-438A, R-422B, R-427A, R-421A, R-404A, R-290, R-449A, R-448A, and R-407A. Contractors can simply choose Superheat, Subcooling, or Airflow and enter ..., For detailed charging instructions see installation instructions provided with unit. Measure air temperature to outdoor coil for cooling and indoor coil for heating. Place and "X" on the appropriate chart w here the suction and discharge pressures cross. If "X" is below ambient temperature line, add charge and repeat step 3., Superheat r410a subcooling 134a heat. Piston sizing chart peugeot mopedarmy retrieved oldid title index410a refrigerant cost per pound : shop 25r410a r410a refrigerant Piston size chart r22 goodman06dr1090 carrier refrigeration 5h40 compressor spares part, view. R 22 piston sizing chartPiston size chart r410a goodman Recovery …, 1 Mar 2020 ... ... R22 system. We are going to take out our P/T chart and match 60 PSIG with the corresponding temperature for R22. 60 PSIG for R22 is 34 ..., Arkema is happy to provide HVACR contractors, educators, and students with pocket Pressure Temperature (PT) charts to use on-the-go . Our PT charts feature products used on a daily basis, including R-22, R-134a, R-404A, R-410A, and our R-22 retrofit product - Forane ® 427A (R427A) - The EASY RETROFIT™. Download our PDF PT Chart!, Postage stamp charts are becoming increasingly popular among businesses, as they offer a convenient way to track postage costs and ensure that you’re always paying the correct amou..., R22 Subcooling Charging Chart. Superheat hvac subcooling orifice troubleshooting acting slidesharetri.. Redken Eq Gloss Color Chart. Eq redken gloss redken eq wella shade demi palette toning toner brassy.. Chewtle Evolution Pokemon Sword. evolve chewtle pumpkaboo galar shield sword gourgeist chewtle drednaw.., a refrigerating system, exclusive of any subcooling or superheating. This term usually describes condensation or evaporation of a zeotrope. ODP – ozone depletion potential – degree to which a substance can degrade the ozone layer; all measurements relative to a similar mass of CFC-11, which is indexed to 1.0., Feb 15, 2014 · Subcooling is the amount of liquid held back in the condenser. This allows the liquid to give up more heat, below saturated pressure- temperature. For every one degree of subcooling at the same condensing+ pressure, capacity will increase .5 percent. See the chart that I developed for HVACPro app. , SuperCool Slide Rule. $19.99. Quantity. Add to Cart. PRODUCT INFO. SuperCool Slide Rule - R22 & R410a Charging & Duct Calculator - Air Conditioning and HVAC Troubleshooting, A/C Educational Products, & AC Charts - SuperHeat & SubCooling., Or download onto your own device. P-T Calculator. This comprehensive Pressure/Temperature calculation tool provides several unique features designed to make the HVAC/R technician’s job easier. Available for iOS and Android devices: For more information, call 800-262-0012. or e-mail [email protected]., Generally speaking, 10-12° of subcooling at the outlet of the condenser coil is most common. However, you must look for the proper design subcooling for the …, R134A Pressure-Temperature Chart-49-45: 1-17.2 51: 10.6 101: 38.3-48-44.4 2-16.7 52; 11.1 102; 38.9-47-43.9 3-16.1 53; 11.7 103; 39.4-46-43.3 4-15.6 54; 12.2 104; 40-45-42.8 5-15 55; 12.8 105; 40.6-44-42.2 6-14.4 56; 13.3 106; 41.1-43-41.7 7-13.9 57; 13.9 107; 41.7-42-41.1 8-13.3 58; 14.4 108; 42.2-41-40.6 9-12.8 59; 15 109; 42.8-40-40 10-12.2 ..., The superheat chart includes target AC superheat for 55°F to 128°F outdoor temperature (DB temperature) and for 50°F to 76°F indoor evaporator temperature (WB temperature). You will find the chart that summarizes all total superheats further on., Subcooling is the same temperature difference on the high side. “In the example given earlier, suction pressure of 118 psi converts to a saturated temperature of 40°. If the suction gas is 50°, then there is 10° of superheat,” he said. “Too much superheat means the compressor is not being cooled properly and can overheat., The perfect refrigerant reading depends on several factors, like atmospheric pressure and temperature. I like to see an average range of 58-85 PSI on the low side and 120-300 PSI on the high side. These indicate that the unit is running okay and should be cooling properly. TL;DR: R22 is almost phased out and even banned., Bold (psig) = Saturated Liquid (calculate Subcooling) ⁰F Freon™ 22 (R-22) Opteon™ XP40 (R-449A) Freon™ MO29 (R-422D) Freon™ NU-22B™ (R-422B) Freon™ 407A (R-407A) Freon™ MO99™ (R-438A) Freon™ 407C (R-407C) Freon™ 410A (R-410A)-50-48-46-44-42 6.1 4.8 3.4 1.9 0.4 7.4 6.1 4.7 3.2 1.7 9.2 7.9 6.6 5.3 3.8 11.4 10.3 9.2 7.9 6.7 9 ..., Note: Condensing temperature is derived using the PT chart. On new refrigerant blends with high temperature glide, this is called the bubble point (BP) temperature. (See Figure 2.) To measure subcooling with a pipe clamp, allow the system to run long enough for temperatures and pressures to stabilize.