R410a pressures at 90 degrees

November 2, 2003. Several major manufacturers are producing comfort air conditioning equipment using refrigerant 410A. The trend towards the use of R-410A continues to grow and there is a demand for technicians who are comfortable working with this higher-pressure replacement for refrigerant 22. Due to the differences between R-22 and the newer ...

Unit is a 2-1/2 ton, upflow attic crawlspace. 3/4 x 3/8 copper. Suction pressure fluc 110psi to 130psi. Discharge was 370 on 90+ degree outside temp. went over all connections..all dampers are open..no air leaks drawing from attic. 10 - 12 deg temp difference across coil. Sounds as if you are low on freon.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...Question: A rigid 90 L tank contains 4.5 kg of R-410a at a pressure of 150 kPa. Determine thea) temperature of the fluidb) quality of the mixturec) volume occupied by the vapor phase. A rigid 9 0 L tank contains 4. 5 kg of R - 4 1 0 a at a pressure of 1 5 0 kPa. Determine the. c) volume occupied by the vapor phase.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: …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 monitor

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). 4.2 MPa is the operating pressure (right on the nameplate). If the pressure you are getting is down 10-15%, you probably need more refrigerant. Consult your user's manual to be sure or call Gree Electric Appliances, Inc. of Zhuhai. Second, you are looking at a heat pump. Verify the system is in cooling mode.404R pressure temperature chart is quite simple to understand. This is a table that tells you precisely what the pressure of R404A is at a certain temperature. At the low end, the pressure of 404A is 0.9 psig. At the high end, the pressure of 404A is 456.8 psig. We are, of course, talking about 404A liquid pressure.A 90-degree angle has an internal angle equivalent to 90 degrees and forms a perfect L shape. It is also known as a right angle. Ninety-degree angles are found in both geometry and...Sin 90 degrees is equal to one. This degree value can also be expressed in radians as sin(?/2) = 1. This value of the sine function corresponds to one-fourth of the complete arc di...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

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 …So if it's 85º out the saturation pressure in the system (that's been sitting off) should be 255 psi for 410a. If it's much different than that, then you would want to treat it as contaminated refrigerant when recovering. I assume 5 below would mean 80º in this example to account for the indoor coil being colder, so 236 psi.So we replace the compressor (same model #), replace the liquid line filter dryer, and evacuate to 500 microns. I weigh the charge in per the manual = unit's orignal charge + addl ounces per foot of lineset - total of 5# 6 oz. Start unit up, damn it, looks wrong immediatelY: Suction: 149.5 psi. Suction Temp: 55.4*F.410A refrigerant (ASHRAE designation: R-410A [50/50]), have been developed and are presented here. ... equation of state, which represent the data with accuracy and consistency throughout the entire range of temperature, pressure, and density. Vapor enthalpy and entropy are calculated from the standard Martin-Hou ... Critical Density …2362 posts · Joined 2009. #2 · Mar 21, 2012. 100 head= 37 degree saturation temp. 35 suction = a negative 11 saturation temp. Can't have sweat at 11 below zero F so my guess is it's not 410A in there. Kind of looks like pressure readings for 134a. Reclaim,leak check,vacuum to 500 microns then charge with fresh 410A. H.

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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.Typical Low Side Pressure Range for R410A in the field: 115-120 psi. Typical High Side Pressure Range for R410A in the field: 410-420 psi. By 2025, high Global Warming Potential (GWP) refrigerants with a GWP of over 750, will be banned together with the systems using that gas. R410A has a GWP > 2,000.The pressure gauges for this refrigerant stays between 22 PSI and 57 PSI (pounds per square inch). But you have to keep in mind that there are two different sides to this chart. And you have to consider the low as well as the high side. Hence, the normal low-pressure side for R 134a needs to be less than 90 degrees.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 ... 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. So if it's 85º out the saturation pressure in the system (that's been sitting off) should be 255 psi for 410a. If it's much different than that, then you would want to treat it as contaminated refrigerant when recovering. I assume 5 below would mean 80º in this example to account for the indoor coil being colder, so 236 psi.

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.R410A Pressure Temperature Chart R410A Temperature (°C) Pressure (barA) Pressure (barg) Pressure (psig) Pressure (barA) Pressure (barg) Pressure (psig)-70 0.36 -0.66 -9.52 0.35 -0.66 -9.55 ... 46 27.99 26.97 391.09 27.91 26.90 390.02 48 29.32 28.31 410.47 29.25 28.23 409.36 50 30.71 29.69 430.55 30.63 29.62 429.42May 26, 2012 · Head pressure: 118F 83 + 35 = 118F more or less shows on the high side gauge if I understand this correctly. Low side pressure: 125 psi = 42 saturation temp. 66.2 low side line temp. High side pressure: 335psi = 104 saturation temp. 83.1 high side line temp. Temp at the vent in rooms: 56.1F + or minus. Temp from supply side: 55.2F. 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.Dec 15, 2018 ... 27:56 · Go to channel · Charging R-410A Refrigerant into an Air Conditioner! Pressures, Temps, Tips! AC Service Tech LLC•1.3M views · 18:27 &m...pressures and refrigeration capacity than R-22. The compositions of Freon™ 407C and Freon™ 410A are as follows: HFC-32 HFC-125 HFC-134a Freon™ 407C (R-407C), wt% 23 25 52 Freon™ 410A (R-410A), wt% 50 50 — Because Freon™ 407C and Freon™ 410A are mixtures of HFCs, they have zero ODP. Table 1 lists the chemical names and formulae …Here is a list of the pressure readings that are characteristic of an A/C compressor that is not blowing cold air into the cabin of your car: 250 PSI / 30 PSI = You have air somewhere in the system. 250 PSI / 50 PSI = The system is overcharged and the condenser is not cooling. Condenser may be blocked. 225 PSI / 80 PSI = It is likely that …We will first examine the low-pressure side of the system, otherwise known as the vapor or suction line. During air conditioning mode, the pressure on the vapor line of an R-410A system will be somewhere between 102 to 145 PSIG. If the system had R-22, the vapor pressure would be between 58 to 85 PSIG but these pressures will be …

The chart displays temperature values (in degrees Fahrenheit or Celsius) against pressure values (in pounds per square inch gauge, or PSIG), allowing for …

R22 boiling point: -40.8 degree Celsius at atmospheric pressure (sea level or 1 ATM) R22 density: 3.66 g/cm 3, in gas form - this is a colorless gas. R22 molar mass: 86.47 g/mol. R22 gas cylinder identification: light green. R2 status: no longer in active use, replaced with R458A.Pressure Controls & Thermostats. Go back; Pressure Controls & Thermostats; Pressure Controls; Fan Speed Controls; Oil Failure Controls; ... Copper Elbow - 90 degree - 3/4" - F/M (R410A) LR - 3 Pack - CE1290FML4103PK. Home. Products & Resources. Product Range. COPPER TUBE, FITTINGS & INSULATION. Copper Fittings.Ever preview a song in iTunes and have the playback stop just before the killer chorus? For songs longer than two minutes and 30 seconds, iTunes is extending song previews to 90 se...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 ...Saturation Pressure-Temperature Data for R-410A (psig)*. 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 ...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 …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 side.

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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 … R410a pressure chart high and low side. Temp(°F) Liquid Pressure (psi) Vapor Pressure (psi) -49. 5.5. 5.4. -48. 6.0. 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 side. (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 beenR-410A Environmental Classification HFC Molecular Weight 72.6 Boiling Point (1atm,°F) -61.0 Critical Pressure (psia) 691.8 Critical Temperature (°F) 158.3 Critical Density (lb./ft^ …4.2 MPa is the operating pressure (right on the nameplate). If the pressure you are getting is down 10-15%, you probably need more refrigerant. Consult your user's manual to be sure or call Gree Electric Appliances, Inc. of Zhuhai. Second, you are looking at a heat pump. Verify the system is in cooling mode.Mar 1, 2020 ... refrigerator? R22 R410a ... SUBCOOLING= Liquid line temp(90 Degrees F.) ... R-22 and R-410A Refrigerant Operating Pressures on Air Conditioning ...(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 been ….

So we replace the compressor (same model #), replace the liquid line filter dryer, and evacuate to 500 microns. I weigh the charge in per the manual = unit's orignal charge + addl ounces per foot of lineset - total of 5# 6 oz. Start unit up, damn it, looks wrong immediatelY: Suction: 149.5 psi. Suction Temp: 55.4*F.Hi all (yall) I was doing a PM for a customer and when taking the refrigerant readings, I have come to a complete brain fart as to why the system was doing this. Readings: Indoor temp: 70 F. Outdoor temp: 68 F. Suction Pressure: 65 PSIG (roughly 10 degrees) Discharge Pressure: 205 PSIG (roughly 72 degrees)If the condenser saturation pressure for an R-22 system is 226.4 psig and the condenser outlet temperature is 90 degrees, what is the condenser subcooling? a. 110 degrees b. 90 degrees c. 20 degrees d. 10 degrees . Show transcribed …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.Saturation pressures of R-410A, -22, and -134a for a range of temperatures in a/c applications. OPERATING PRESSURE POINTS. “Systems using R-410A operate …So if it's 85º out the saturation pressure in the system (that's been sitting off) should be 255 psi for 410a. If it's much different than that, then you would want to treat it as contaminated refrigerant when recovering. I assume 5 below would mean 80º in this example to account for the indoor coil being colder, so 236 psi.pressure of about 250 psi at an outdoor temperature of 95°F. 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. (Note that in most cases, equipment designed for R-22 cannot use R-410A because of this difference in operating When operated at a 35 degC ambient temperature, the suction pressure of an Air-Conditioner with R410A refrigerants ranges from 115 to 125 Psig. At these operating conditions, the discharge pressure is around 400 Psig. R-410A operates at 50 to 70% higher pressures than the R-22. Last updated: 19 days ago – 12 co-authors – 9 users. (View the Pressure Temperature Chart pictured below for reference) Again, say you have a low side pressure of 76 psi on a HVAC system containing R-22 refrigerant, view the pressure temperature chart and find 76 psi and follow it across to the R-22 column. The evaporator saturation temperature on the chart, reads 45 degrees Fahrenheit.psig °f psig °f psig °f psig °f psig °f 12; –37.7. 114 R410a pressures at 90 degrees, Jul 27, 2020 · just swopped out two 2.5 ton lenox coils and condensers r-22 with two new 410a 2.5 ton coils and condensers easy swop but now the space isn't dropping temp and my dischage air temp is 59 degrees but f … read more , R410a pressure chart high and low side. Temp(°F) Liquid Pressure (psi) Vapor Pressure (psi) -49. 5.5. 5.4. -48. 6.0. , *Red Italics Indicate Inches of Mercury Below Atmospheric Pressure Saturation Pressure-Temperature Data for R407C (psig)*, 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., 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 …, A 90-degree angle has an internal angle equivalent to 90 degrees and forms a perfect L shape. It is also known as a right angle. Ninety-degree angles are found in both geometry and..., Pressure (psig) Temp (°C) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor ... -10 36,5 36,3 -23,3 40 118,8 118,4 4,4 90 275,4 274,5 32,2 140 542,5 541,4 60 ..., Covishield accounts for nearly 90% of the total covid vaccination in India. India’s vaccine saga appears to be coming full circle. After months of battling shortages, missing inter..., 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 ..., Temperature Calculator. This script determines the gas pressure based on temperature of R410a refrigerant., Hi all (yall) I was doing a PM for a customer and when taking the refrigerant readings, I have come to a complete brain fart as to why the system was doing this. Readings: Indoor temp: 70 F. Outdoor temp: 68 F. Suction Pressure: 65 PSIG (roughly 10 degrees) Discharge Pressure: 205 PSIG (roughly 72 degrees), R-410A, sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A, is a zeotropic but near-azeotropic mixture of difluoromethane (CH 2 F 2, called R-32) and pentafluoroethane (CHF 2 CF 3, called R-125) that is used as a refrigerant in air conditioning and heat pump applications. R-410A …, 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., psig °f psig °f psig °f psig °f psig °f 12; –37.7. 114, R410A AC Refrigerant Charging Hoses, 59“ HVAC Charging Hose with 1/4’’ SAE Female Flare, 800PSI Working Pressure for R410A R22 R134A R12 R502 Air Condition System Maintenance. 283. $1299 ($2.65/Foot) Save 5% with coupon. FREE delivery Mon, Sep 4 on $25 of items shipped by Amazon. Or fastest delivery Fri, Sep 1., Jul 4, 2015 · Head on 410 at 100° will be in the 375 - 400 range depending on surrounding conditions, sun, heat load inside, dirt on the coil. high suction pressure could be from a high load, bad compressor, bad-wrong-nonexistant metering device. There are a multitude of things that can cause pressures to be high or low depending on the situation. , Refrigerant Type: R-134a, R-410a Maximum Operating Temperature: 250 °F, 121 °C Maximum Operating Pressure: 870 psi, 60 bar Minimum Burst Pressure: 4355 psi, 300 bar Vacuum Pressure Rating: 200 Microns External Leak Rate: 0.1 Ounces of Helium per Year at Operating Pressure Range Vibration Resistance: Conforms to UL109, 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 …, -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 ..., Make your job easier with our handy refrigerant pressure temperature HVAC app with R-410A included., 4.2 MPa is the operating pressure (right on the nameplate). If the pressure you are getting is down 10-15%, you probably need more refrigerant. Consult your user's manual to be sure or call Gree Electric Appliances, Inc. of Zhuhai. Second, you are looking at a heat pump. Verify the system is in cooling mode., So if it's 85º out the saturation pressure in the system (that's been sitting off) should be 255 psi for 410a. If it's much different than that, then you would want to treat it as contaminated refrigerant when recovering. I assume 5 below would mean 80º in this example to account for the indoor coil being colder, so 236 psi., 410A pressures . Field Question ... Should condense about 20ish over the ambient air temperature with a 40 to 45 degree evaporator. TXV systems typically run around 10 degrees of subcooling and usually about 10 degrees of evaporator superheat measured at the evaporator outlet. ... A condensing temperature of 117 to 134 is WAY above the 90 I'd ..., 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 Refrigerants Environmental Classification Molecular Weight Boiling Point (1 atm, ˚F) Critical ..., R410A AC Refrigerant Charging Hoses, 59“ HVAC Charging Hose with 1/4’’ SAE Female Flare, 800PSI Working Pressure for R410A R22 R134A R12 R502 Air Condition System Maintenance. 283. $1299 ($2.65/Foot) Save 5% with coupon. FREE delivery Mon, Sep 4 on $25 of items shipped by Amazon. Or fastest delivery Fri, Sep 1., When operated at a 35 degC ambient temperature, the suction pressure of an Air-Conditioner with R410A refrigerants ranges from 115 to 125 Psig. At these operating conditions, the discharge pressure is around 400 Psig. R-410A operates at 50 to 70% higher pressures than the R-22. Last updated: 19 days ago – 12 co-authors – 9 users., At what pressure? [1 Pt] (d) Use interpolation with. Saturated vapor R-410A at 60 oC has its pressure decreased to increase the volume by 10% while keeping the temperature constant. (b) What are the final T-v states? Is it superheated or subcooled? [2 Pts] (c) What is the closest v you can find in the table at 60 oC? At what pressure? [1 Pt], Question: A rigid 90 L tank contains 4.5 kg of R-410a at a pressure of 150 kPa. Determine thea) temperature of the fluidb) quality of the mixturec) volume occupied by the vapor phase. A rigid 9 0 L tank contains 4. 5 kg of R - 4 1 0 a at a pressure of 1 5 0 kPa. Determine the. c) volume occupied by the vapor phase., 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). , Pursuing a master's degree is an important step in your educational and professional development. Updated April 17, 2023 • 6 min read thebestschools.org is an advertising-supported..., 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]., Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A. Engineering ToolBox - Resources, Tools and …, If the condenser saturation pressure for an R-22 system is 226.4 psig and the condenser outlet temperature is 90 degrees, what is the condenser subcooling? a. 110 degrees b. 90 degrees c. 20 degrees d. 10 degrees . Show transcribed …