R410a pressures at 90 degrees

This is where our friend R-410A came into play. New machines from 2010 and onwards were banned from using R-22. Instead, they were outfitted with R-410A. If you would like to read more about R-410A refrigerant please have a look at our Puron fact sheet. R-410A PT Chart. Let’s take a look at our pressure table for R-410A Puron.

Make your job easier with our handy refrigerant pressure temperature HVAC app with R-410A included.146. Post Likes. R410a isn't ineffective above 90 degrees. But R410a loses both capacity and efficiency faster than R22 as the temperature rises. According to this study, R410a is better at lower temperatures and R22 is better at higher temperatures. The breakeven point is around 90°F-95°F.Jan 3, 2024 · How to Read an R-410A PT Chart. 1. Identify Desired Temperature. Determine Temperature: Choose the required temperature for your system based on its application or specific needs. 2. Find Corresponding Pressure. Locate on Chart: Find the selected temperature on the P-T chart and note the corresponding pressure in psig (pounds per square inch ... BP. BP. BP. -114.6°F. -115.6°F. -126.1°F. Before adding refrigerant charge, evacuate to proper vacuum level to remove non-condensable gases and to evaporate and remove moisture in the system. This chart shows the vacuum level and the temperature at which water will vaporize.Refrigerants - Physical Properties. 1) Production of R11 or CFC-11 was halted by the clean air act on January 1, 1996. 2) Production of R12 or CFC-12 (Dichlorodifluoromethane) was halted by the clean air act on January 1, 1996. 3) R22 or HCFC-22 is a single component HCFC refrigerant with low ozone depletion potential.

Physical Properties of Refrigerants. R-410A. Environmental Classification Molecular Weight Boiling Point (1 atm, ̊F) Critical Pressure (psia) Critical Temperature ( ̊F) Critical Density, …410a ductless mini split operating pressures. I know that you should rarely put gauges on a ductless mini split, and that you should dump the charge and just weigh it in. I have heard that there are spec sheets that will give you "normal operating pressures" based on indoor and outdoor conditions. This would come in handy when servicing systems ...Nov 16, 2020 · The low-side should be near 30 PSI at 90 degrees Fahrenheit or less. Pressure that is too much lower or higher shows there is a problem. On a properly working system, high-side pressure will be about twice the ambient temperature, plus 50 PSI. 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 gMay 18, 2020 · If you see a liquid line pressure that is more than 30 degrees saturation above outdoor temperature (like a 440 PSI liquid pressure on an R410a system on a 90-degree day), do not proceed until you have further addressed the possible causes of high head, regardless of what the superheat or subcool might be reading.

The temperature glide for R-410A is less than ____ degrees Fahrenheit over air conditioning and refrigerating operating ranges. ... A. 50 psig B. 30 psig C. 70 psig D. 90 psig. A. 50 psig. When a blend is ... R-410A systems use a high pressure switch that will open at approximately: A. 500 psig plus or minus 10 psig B. 610 psig plus or minus 10 ...Nov 16, 2020 · The low-side should be near 30 PSI at 90 degrees Fahrenheit or less. Pressure that is too much lower or higher shows there is a problem. On a properly working system, high-side pressure will be about twice the ambient temperature, plus 50 PSI. Refrigerant Pressure vs. Temperature Charts for Pioneer Split Systems (R410a) Charts provided herein are for indicative purposes only. Various other conditions may effect the …Pseudo-Pure Fluid Equations of State for the Refrigerant Blends R-410A, R-404A, R-507A, and R-407C. ... Maximum pressure [Pa] 50000000.0. Triple point. Triple point temperature [K] 200.0. Triple point pressure [Pa] 29160.33537476026. Critical point. Critical point temperature [K] 344.494.75 80 85 90 95 100 105 110 115 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

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of an R-410A system.! CAUTION 7. If suction-line filter drier was installed for system clean up, operate system for 10 hr. Monitor pressure drop across drier. If pressure drop exceeds 3 psig, replace suction-line and liquid-line filter driers. Be sure to purge system with dry nitrogen and evacuate when replacing filter driers. Continue to monitorOPERATING 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 … Critical Pressure (psia) 691.8 Critical Temperature (°F) 158.3 Critical Density (lb./ft^ 3) 34.5 Vapor Density (bp,lb./ft^ 3) 0.261 Heat of Vaporization (bp,BTU/lb.) 116.8 Global Warming Potential (CO2 = 1.0) 2088 ASHRAE Standard 34 Safety Rating A1 Refrigerant Boiling Point Physical Properties Refrigerant -80°F -40°F 0°F 40°F 80°F 120°F ... Most of you know R-32 as a necessary component in the widely popular HFC blend known as R-410A Puron. R-32 along with R-125 gets you that R-410A that is found in nearly every air conditioner today. However, in recent years there has been a push to slowly phase down R-410A. That is because of 410A’s very high Global Warming …Saturation Pressure-Temperature Data for R410A (psig)*. Temp (°F) Pressure. Temp (°C)

May 16, 2002 · 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 ... Sep 17, 2017 · I would think we could have a thermostat that could do this: Heating mode: outside temp >65F: Run AUX only - lock out compressor (avoid high pressure) outside temp >10F and <65F: Run compressor and AUX as needed. outside temp <10F: Run AUX only - lock out compressor (avoid defrost cycling) Cooling mode: outside temp <60F: lock out compressor ... 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 liquid line pressure at 108°F saturation temperature is 356.5 PSIG. This screenshot of the Ref Tools app shows the liquid line pressure of R410A at saturation at 108°F. Notice how the slider has been set to BUBBLE point (inside the orange box). Vapor Line Pressure: Again, we already have the return air temp data, which is 74°F.Refrigerant Pressure vs. Temperature Charts for Pioneer Split Systems (R410a) Charts provided herein are for indicative purposes only. Various other conditions may effect the …I am charging my heat pump it is an r410a and its about 90 degrees outside i have gotten the low side up from about 100psi to 130 and the high side from around 300psi to 340-50 is this about right what should my pressures be. The 410a part of the gauge is reading 44 low and 106 for high.The automotive HVAC gauge readings should be between 35-40 PSI on the low side and 145-160 on the high side, assuming an ambient temperature of 70 degrees Fahrenheit. ACLAB Note: The respective gauges should have a pressure temperature chart to align the ambient temperature with the proper pressure.Becoming bilingual opens up a whole new world of different people, different cultures, and different emotions. It also takes a huge time commitment—one that many of us can't dedica...Digital Fieldpiece Gauges: https://amzn.to/2LFjNnKR410A Equipment: https://amzn.to/2xv6AG5My Favorite Tool: https://amzn.to/3NIFJuOTools We Recommend: https:...I am wondering what the high and low pressures should be in a 3-ton 410a refrigerant AC system. The installer seemed very unsure of himself. It was 88 or 90 degrees F (and humid outside) and he ended up setting (leaving?) the pressures at 142 psi on the low side and 350 on the high side. He said something about a 200 psi difference being …What are the ordinary static pressures that you all are used to for a 410A unit on a 65 degree day? I'm working on a York condenser that went out on Low Pressure weeks ago. I topped her off with a few pounds of 410A and now it trips on High Pressure, but I was confident in my original charge because of the pressures/temps I observed at …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.

The core of the calculator’s functionality is the formula it uses to relate temperature and pressure. Since the relationship for R-410A is specific and non-linear, a general formula might look like this: [P = a + bT + cT^2 + dT^3 + \ldots] where: (P) is the pressure in PSI or bar, (T) is the temperature in degrees Celsius or Fahrenheit,

The low side pressure of a typical R410A mini split is between 110-140 psi depending on the operating conditions. Though it can vary, the low side pressure of a mini split should not fall below 100 psi or raise beyond 160 psi. The working pressure of mini splits is depending on factors such as the weather and cooling load. The temperature glide for R-410A is less than ____ degrees Fahrenheit over air conditioning and refrigerating operating ranges. ... A. 50 psig B. 30 psig C. 70 psig D. 90 psig. A. 50 psig. When a blend is ... R-410A systems use a high pressure switch that will open at approximately: A. 500 psig plus or minus 10 psig B. 610 psig plus or minus 10 ...From the PT chart, we can read that the pressure of liquid 448a on a 90-degree day is 208.4 psig. Similarly, we can see that the vapor pressure of 448a on a 90-degree is 181.2 psig. Example 7: What Are 448a Pressures On A 95-Degree Day? From the PT chart, we can read that the pressure of liquid 448a on a 95-degree day is 224.4 psig. Critical Pressure 4926.1 kPa (abs) (714.50 psia) Critical Density 3488.90 kg/m3 (30.52 lb/ft ) Critical Volume 30.00205 m /kg (0.0328 ft3/lb) Units and Factors t = Temperature in °C T = Temperature in K = °C + 273.15 P = Absolute Pressure in KiloPascals (kPa [abs]) v f = Volume of saturated liquid in m3/kg v g = Volume of saturated vapor in m3/kg They recorded a 245 psi Head pressure and 115 suction pressure on my installation receipt. He also wrote "10 degrees subcool" on the receipt, which I don't see how that is possible when a 245 psi equals 83 degrees on an R-410a P/T chart. The small, copper liquid line (when measured near the compressor valve) doesn't seem to heat up …Jun 25, 2016 · The liquid pressure should be 385-395 and the suction pressure should be about 138 but will probably be a few psi lower since it's so cool in the space. The sub-cool should be 11 deg. F +/- 1.5 deg. F. R410a pressure chart high and low side. Temp(°F) Liquid Pressure (psi) Vapor Pressure (psi) -49. 5.5. 5.4. -48. 6.0.Determining the Proper Subcooling Level for R410a. Getting the right subcooling level for R410a is crucial. Factors like system design, ambient conditions, and equipment type influence subcooling requirements. Typically, R410a systems require a subcooling level of 10-15°F (5-8°C).

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I am charging my heat pump it is an r410a and its about 90 degrees outside i have gotten the low side up from about 100psi to 130 and the high side from around 300psi to 340-50 is this about right what should my pressures be. The 410a part of the gauge is reading 44 low and 106 for high.This is where our friend R-410A came into play. New machines from 2010 and onwards were banned from using R-22. Instead, they were outfitted with R-410A. If you would like to read more about R-410A refrigerant please have a look at our Puron fact sheet. R-410A PT Chart. Let’s take a look at our pressure table for R-410A Puron.Discover available jobs for individuals with engineering degrees, along with ways that a master degree, certification, and licensure can grow your career. Updated May 23, 2023 theb...The typical 410a pressures on a 95 degree day are as follows; Liquid pressure: 296.4 psi. Vapor pressure: 295.5 psi. See all other pressures for R410 on different temperatures of the day from -49°F to 150°F below.Critical Density 3488.90 kg/m3 (30.52 lb/ft ) Critical Volume 30.00205 m /kg (0.0328 ft3/lb) Units and Factors t = Temperature in °C T = Temperature in K = °C + 273.15 P = Absolute Pressure in KiloPascals (kPa [abs]) v f = Volume of saturated liquid in m3/kg v g = Volume of saturated vapor in m3/kg V = Volume of superheated vapor in m3/kg d f ...A 90-degree turn is one-quarter of turn regardless of direction. If a person imagines himself standing looking straight ahead and then turning to face the right side or the left si...*Red Italics Indicate Inches of Mercury Below Atmospheric Pressure Saturation Pressure-Temperature Data for R407C (psig)*The automotive HVAC gauge readings should be between 35-40 PSI on the low side and 145-160 on the high side, assuming an ambient temperature of 70 degrees Fahrenheit. ACLAB Note: The respective gauges should have a pressure temperature chart to align the ambient temperature with the proper pressure.pressure. A platinum resistance thermometer is attached to the sample bombs for the temperature measurement. Temperatures are reported on the ITS-90, after conversions from the original calibration on the IPTS-68 are made. Pressures are measured with an oscillating quartz crystal pressure transducer with a (0 to 20) MPa range. AdiabaticApr 24, 2021 ... In this HVAC Training Video, I Show How to Check the Refrigerant Charge using the Subcooling Method. Next I provide 3 Scenarios for ...Our Ebook, Paperback, Workbook, Quick Cards: https://www.acservicetech.com/the-book This video is on Normal Operating Pressures are for Freon R-22 and R-410A... ….

Pressure-Temp Chart-40-35-30-25-20-15-10-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 11.6 14.9 18.5 22.5 26.9 31.7 36.8 42.5 48.6 55.2 62.3 70.0 78.3 87.3 96.8 107 118 130 142 155 170 185 201 217 235 254 274 295 317 340 365 391 418 446 476 507 539 573 608 Physical Properties of ...R410A R410A 01 23.0 6.5 02 27.5 7.8 03 2) 34.0 9.8 Technical data and ordering: TCBE Thermostatic expansion valves – TUB/TUBE/TCBE Ordering TCBE, straightway, thermostatic expansion valve with bulb strap R410A Refrigerant Type Rated capacity 2) Ori˜ce no. Pressure equalisation Code no. Connection inlet × outlet in. × in. Range N –40/+10 ...The R-134a and R-1234yf pressure charts are for guidance when using A/C Pro ® recharge kits, refills, and gauges. The charts are intended to help provide an understanding of a vehicle’s air conditioning system pressure, which can be helpful during the diagnostic and recharge processes. Be sure to consult the instructions provided with your A ...(R-508B) is a better replacement than Freon™ 410A. Properties Freon™ 410A is safe to use when proper storage and handling practices are followed. It is a nonflammable, low toxicity mixture of HFC-32 and HFC-125 (50/50 wt%). Freon™ 410A has been classified as A1 by ASHRAE and assigned the ASHRAE number of R-410A. It has beenJun 11, 2017 ... In this HVAC Training Video, I show you How to Read the Refrigerant P/T Chart for the Pressure-Temperature Relationship.The latitude of the North Pole corresponds to 90 degrees north latitude. Latitude lines around a globe are the horizontal lines, where 0 degrees latitude corresponds to the equator...Digital Fieldpiece Gauges: https://amzn.to/2LFjNnKR410A Equipment: https://amzn.to/2xv6AG5My Favorite Tool: https://amzn.to/3NIFJuOTools We … R410a pressures at 90 degrees, This is where our friend R-410A came into play. New machines from 2010 and onwards were banned from using R-22. Instead, they were outfitted with R-410A. If you would like to read more about R-410A refrigerant please have a look at our Puron fact sheet. R-410A PT Chart. Let’s take a look at our pressure table for R-410A Puron., One key factor that plays a pivotal role in ensuring efficient cooling on such hot days is the careful management of 410a refrigerant pressures. In this expert guide, we delve into the complexities of balancing 410a pressures during the sweltering heat of a 95 degree day. As temperatures soar, HVAC systems are put to the test, and maintaining ..., Critical Pressure 714.50 psia (4926.1 kPa [abs]) Critical Density 30.52 lb/ft3 (488.90 kg/m3) Critical Volume 0.0328 ft3/lb (0.00205 m3/kg) Units and Factors t = temperature in °F T = temperature in °R = °F + 459.67 P = pressure in lb/in 2 absolute (psia) vf = volume of saturated liquid in ft 3/lb vg = volume of saturated vapor in ft 3/lb, The pressure-enthalpy diagrams for Freon™ 407C are shown in Figures 1 and 2. Additional physical property data may be found in other ... -90 -100 0 10 20 30 40 50 Temperature=60 o C 70 80 90 100 110 120 130 140 150 c.p. s a t u r …, The core of the calculator’s functionality is the formula it uses to relate temperature and pressure. Since the relationship for R-410A is specific and non-linear, a general formula might look like this: [P = a + bT + cT^2 + dT^3 + \ldots] where: (P) is the pressure in PSI or bar, (T) is the temperature in degrees Celsius or Fahrenheit,, 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 ... , Nov 16, 2020 · The low-side should be near 30 PSI at 90 degrees Fahrenheit or less. Pressure that is too much lower or higher shows there is a problem. On a properly working system, high-side pressure will be about twice the ambient temperature, plus 50 PSI. , I am wondering what the high and low pressures should be in a 3-ton 410a refrigerant AC system. The installer seemed very unsure of himself. It was 88 or 90 degrees F (and humid outside) and he ended up setting (leaving?) the pressures at 142 psi on the low side and 350 on the high side. He said something about a 200 psi difference being normal., system charge chart - refrigerant 410a pressure at suction service port (psig) connect pressure gauges to suction and liquid ports on unit. measure air temperature to outdoor coil. place an "x" on the appropriate chart where the suction and liquid pressures cross. if "x" is below ambient temperature line, add charge and repeat step 3. , Your inability to operate the equipment at 40° screwed your client over. #3 the reason you can’t find anything on operating R-410A below 65° is there is no such rule. It makes no difference what type of refrigerant you have. It’s …, A "90 days same as cash" deal lets you leave a retailer's store with your purchase and without parting with any money. But there's a catch. You must pay off the cost within three m..., Which statement about R-410A is true. Mixtures of R-410A with air can become combustible, never mix R-410A with air or oxygen for either leak testing or pressurizing a system. A recovery cylinder which is half full of recovered R-410A at 80 degrees F, in the absence of non-condensables, will be pressurized to: 237 psig., The charts start at the low end (-49°F) and tell you the pressures all the way to the high end (150°F). Example: What is the pressure of 134A freon at 85°F? You just chart the chart (found below) and you will see that at 85°F, the pressure of R134A is 95.2 psig (pounds per square inch gauge). Measuring the pressure of R134A refrigerant on a ..., i just installed a new split unit r-410a a/c system. it is running at 285/120 psig. the high side seems way low, should be about 420. the correct orifice is installed. this is a 1.5 ton condenser, 2 ton evaporator, and a 0.051 inch …, Pressure-Temp Chart-40-35-30-25-20-15-10-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 11.6 14.9 18.5 22.5 26.9 31.7 36.8 42.5 48.6 55.2 62.3 70.0 78.3 87.3 96.8 107 118 130 142 155 170 185 201 217 235 254 274 295 317 340 365 391 418 446 476 507 539 573 608 Physical Properties of ..., 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., 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 ..., The low side pressure of a typical R410A mini split is between 110-140 psi depending on the operating conditions. Though it can vary, the low side pressure of a mini split should not fall below 100 psi or raise beyond 160 psi. The working pressure of mini splits is depending on factors such as the weather and cooling load. , What Should be the Pressure of R410a Refrigerant in Air ConditionerFull Detail Of R410a Gas pressure running pressure information of R410aStanding Pressure I..., R22 goodman piston superheat pressures operating r410a technicians R410a sizing fyi piping Advanced distributor products Piston sizing chart peugeot mopedarmy retrieved oldid title index ... Piston r22 5t r410a r410 adp 2t 3t michigantemperaturesupplyI am charging my heat pump it is an r410a and its about 90 …, May 18, 2020 · If you see a liquid line pressure that is more than 30 degrees saturation above outdoor temperature (like a 440 PSI liquid pressure on an R410a system on a 90-degree day), do not proceed until you have further addressed the possible causes of high head, regardless of what the superheat or subcool might be reading. , Physical Properties Of R22. In parallel to using the R22 PT chart, professionals will usually need to know some of the following R22 physical properties: R22 liquid density at -69°C: 1.49 g/cm 3. R22 gas density at 15°C: 3.66 kg/m 3. Triple point temperature: -115.76K. Critical pressure: 49.36 bar. Heat capacity ratio at 86°F: 1.178253., Apr 14, 2015 · Let's get started and see what we can do.Most manufacturers recommend charging by super heat and subcoolimg rather than pressures alone,and will vary slightly by manufacturer but as a rule low side of about 110 and high side about 280at 70 degree ambient. This will of course increase as temp warms up.ON an 85 degree day,probably 130 to 135 and ... , Most of you know R-32 as a necessary component in the widely popular HFC blend known as R-410A Puron. R-32 along with R-125 gets you that R-410A that is found in nearly every air conditioner today. However, in recent years there has been a push to slowly phase down R-410A. That is because of 410A’s very high Global Warming …, 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 ..., Jun 24, 2018 ... ... 90 degree attachment https://amzn.to/2MMtVcg ... HVAC Pressure Testing Procedure for Air Conditioners! ... What Should my AC Pressures Be for R410A ..., R-410A at 80 degrees F, in the absence of non-condensables, will be pressurized to: 237 psig. To change the evaporator on a system containing. R-410A, you must: Recover the refrigerant to atmospheric pressure and hold for a few minutes. If the system pressure does not rise, remove the evaporator., i just installed a new split unit r-410a a/c system. it is running at 285/120 psig. the high side seems way low, should be about 420. the correct orifice is installed. this is a 1.5 ton condenser, 2 ton evaporator, and a 0.051 inch …, R22 changes from a liquid to a gas in the evaporator coils of the air handler. Normal temperatures: With compressor running and as reference, on a 90 degree F. day: - Goodman runs 45degrees F on low pressure side and 115degrees F on high pressure side. - 2 ton York runs 40degrees F on low pressure side and 110degrees F on high pressure …, 75 80 85 90 95 100 105 110 115 Cooling Pressure (PSI) ... Outdoor Temp (°F) Refrigerant Pressure vs. Temperature Charts for Pioneer Split Systems (R410a) 68 115 119 123 127 131 135 139 143 147 ... common refrigeration expertise in determining the correct operating pressures, based on the actual conditions. Ind. Title: Temperature-Pressure ..., R22 goodman piston superheat pressures operating r410a technicians R410a sizing fyi piping Advanced distributor products Piston sizing chart peugeot mopedarmy retrieved oldid title index ... Piston r22 5t r410a r410 adp 2t 3t michigantemperaturesupplyI am charging my heat pump it is an r410a and its about 90 …, Let's get started and see what we can do.Most manufacturers recommend charging by super heat and subcoolimg rather than pressures alone,and will vary slightly by manufacturer but as a rule low side of about 110 and high side about 280at 70 degree ambient. This will of course increase as temp warms up.ON an 85 degree day,probably …, Online R454B pressure temperature chart spanning from -40°F to 150°F temp. Printable PDF version of R454B PT chart you can take with you on the job. There are several brand names for R454B: Opteon XL41, Solstice 454B, and Puron Advance. This is a blend of R32 (68.9%) and R1234yf (31.1%). It has a very low boiling point of -59.5°F (-50.9°C).