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2008 ACA Conference. Airon and Heil – Going the extra mile for YOU. 2008 ACA Conference. Are You Ready For Tomorrow? R410A Seminar. Airon and Heil – Going the extra mile for YOU. 2008 ACA Conference. Always Remember, Safety is #1 and Everyone’s Business!.
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2008 ACA Conference Airon and Heil – Going the extra mile for YOU
2008 ACA Conference Are You Ready For Tomorrow? R410A Seminar Airon and Heil – Going the extra mile for YOU
2008 ACA Conference Always Remember, Safety is #1 and Everyone’s Business! Airon and Heil – Going the extra mile for YOU
Use Safety Equipment Airon and Heil – Going the extra mile for YOU
Remove Jewelry Airon and Heil – Going the extra mile for YOU
Lift and Move Correctly Airon and Heil – Going the extra mile for YOU
Electric Shock BE CAREFUL! High voltage is always dangerous. Even 40 volts can be lethal if skin is wet or damaged. Airon and Heil – Going the extra mile for YOU
Refrigerant Safety • Most of the safety precautions are the same for R-410AasR-22 • For example, never expose cylinders of either refrigerant to temperatures above 125° F • Use the same storage rules for both Airon and Heil – Going the extra mile for YOU
Refrigerant Safety • R-410Ahas been confirmed to be in the low toxicity range • ASHRAE Safety Group: A1/A1 • UL Class: Practically Non-flammable. (Can form a combustible mixture with air at pressures above atmospheric pressure) • DOT Green Label: Non-flammable Airon and Heil – Going the extra mile for YOU
Refrigerant Safety Airon and Heil – Going the extra mile for YOU
Refrigerant Safety • Skin or Eye Contact: • Same as other refrigerants; causes frostbite • Flush with lukewarm water • Seek immediate medical attention Airon and Heil – Going the extra mile for YOU
Refrigerant Safety • Avoid exposing it to high temperatures • Watch your torch! • Exposure to flame can produce toxic compounds • Contact with red hot metals can result in explosive reactions Airon and Heil – Going the extra mile for YOU
Codes Follow all Local Codes. In the absence of local codes, consult the current edition of the National Fuel Gas Code. Airon and Heil – Going the extra mile for YOU
Why Choose R-410A For Air Conditioning? • 4-15% more efficient than alternative HFC • refrigerants for air conditioning applications • The chosen refrigerant for newer, more efficient • and reliable HVAC systems • Enhanced heat-pump performance • Cost-effective design • No ozone-depleting chemicals • Lowest global warming (TEWI) Airon and Heil – Going the extra mile for YOU
What Is TEWI? Total Equivalent Warming Impact
R-410A Benefits to Contractors • Offer your customers the most efficient systems, to improve comfort and control costs • Save on projected service costs as R-22 is phased out • Meet tough new energy and environmental restrictions today • Avoid the potential losses in capacity and energy efficiency of retrofit refrigerant replacements • Enhance your reputation by positioning yourself as a refrigerant transition expert Airon and Heil – Going the extra mile for YOU
The 2010 R-22 Phase Out • Phase out all ozone-depleting hydrochlorofluorocarbon (HCFC) refrigerants like R-22 in new equipment by January 1, 2010 • Phase out R-22 for service by 2020 Airon and Heil – Going the extra mile for YOU
The 2010 R-22 Phase Out Airon and Heil – Going the extra mile for YOU
Getting ready for 2010 Airon and Heil – Going the extra mile for YOU
What’s In A Name? • Carrier calls it Puron • Dupont calls it Suva 9100 • Rheem calls it ProZone • Lennox calls it Environ • Sanyo calls it Cooleron Airon and Heil – Going the extra mile for YOU
Why Is R-410A So Desirable? • Operates in the same temperature ranges as R-22. • The cooling equipment can share the same basic design as traditional equipment. • For example . . . Airon and Heil – Going the extra mile for YOU
Typical Pressures & Temperatures At 95 Degrees OAT SST=41Degrees/SCT=117 Degrees SST=49Degrees/SCT=118 Degrees Airon and Heil – Going the extra mile for YOU
Terms • When two blended refrigerants separate easily, they are called Zeotropic • When blended refrigerants don’t segregate in the system, but form a stable chemical composition they are called Azeotropic Airon and Heil – Going the extra mile for YOU
Terms • Fractionation • Temperature Glide Airon and Heil – Going the extra mile for YOU
Terms Fractionation • The tendency of one or more components of a blend to leak at a faster rate than other components • Changes the composition of the remaining blend still in system • Loss of performance results • Occurs in zeotropic blends like R-407C Airon and Heil – Going the extra mile for YOU
Terms What is Temperature Glide? • Difference in two temperatures at a given constant pressure • For example . . . Airon and Heil – Going the extra mile for YOU
Terms In the evaporator . . . • The 1st temperature at which liquid refrigerant first begins to boil is known as the saturated liquid temperature Airon and Heil – Going the extra mile for YOU
Terms The 2nd Temperature… • Saturated vapor temperature: The 2nd temperature at which the last drop of liquid refrigerant has boiled off Airon and Heil – Going the extra mile for YOU
Terms Temperature Glide • At a constant pressure, the difference between the saturated vapor temperature and the saturated liquid temperature is referred to as the temperature glide of the refrigerant • The temperature glide of a single compound refrigerant like R-22is zero Airon and Heil – Going the extra mile for YOU
Terms R-410ATemperature Glide • The temperature glide of R-410Ais 0.3°F or essentially zero as well Airon and Heil – Going the extra mile for YOU
Terms Key Attribute of R-410A • Near-Azeotropicproperties means it acts like a single compound with minimal temperature glide or fractionation potential Airon and Heil – Going the extra mile for YOU
SERVICING CONSIDERATIONS • R410A is a 50/50 (wt. %) mixture of • HFC-32/125 • R410A exhibits azeotropic behavior • with temperature glides that are less • than 0.3°F over the operating range Airon and Heil – Going the extra mile for YOU
SERVICING CONSIDERATIONS • When compared with a zeotrope, an • azeotropic mixture such as R410A will • not suffer significant segregation in a • system and will not materially • change its composition due to a leak Airon and Heil – Going the extra mile for YOU
SERVICING CONSIDERATIONS • As a result, servicing a system that • uses an azeotropic mixture is similar • to servicing a system that uses a pure • fluid Airon and Heil – Going the extra mile for YOU
R410A HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS A number or researchers from tubing, system, and refrigerant manufacturers and universities have conducted studies on the heat transfer and pressure drop characteristics of R-410A. Airon and Heil – Going the extra mile for YOU
R410A HEAT TRANSFER AND PRESSURE DROP CHARACTERISTICS • The results indicate a consistent increase • in the evaporation heat transfer averaging • 40% higher that R-22 • Condensation values are similar to R-22 • The pressure drop is significantly less than • R-22 in both evaporation and condensation, • averaging close to 40% lower in both • cases Airon and Heil – Going the extra mile for YOU
R410A Heat Pumps – Compressor • Consumer Benefit • Reliable Performance • Lowest failure rate • Durability • Quiet Airon and Heil – Going the extra mile for YOU
R410A Heat Pumps – Compressor Airon and Heil – Going the extra mile for YOU
R410A Heat Pumps – Reversing Valve • 600 Lb burst pressure • Heavy duty reversing valve Airon and Heil – Going the extra mile for YOU
R410A Heat Pumps – Muffler Designed Specially for R410A Systems Airon and Heil – Going the extra mile for YOU
Accumulators • New accumulators have been designed. Use exact replacement accumulators - can not be mis-matched • Do not use any other accumulators as a replacement Airon and Heil – Going the extra mile for YOU
Accumulators Mixing tube mixes the oil and refrigerant to maximize oil return R-22 R-410A Airon and Heil – Going the extra mile for YOU
Filter Drier • Factory supplied, Field installed at Indoor Evaporator Coil • Use ONLY factory approved filter drier • One of the methods to remove moisture from POE oil is with filter drier Airon and Heil – Going the extra mile for YOU
Now Located At The Indoor Coil Airon and Heil – Going the extra mile for YOU
Factory Shipped Filter Drier Feature & Benefits • Feature • Filter drier shipped with each unit (field installed) • Consumer Benefit • Compressor Protection • Reliable Performance Airon and Heil – Going the extra mile for YOU
Pressure Control Settings • Because of the higher operating pressures, the high & low-pressure control settings must be higher than those encountered on R-22 systems • The recommended high-pressure control settings are a cut-out pressure of 610 psig and a cut-in pressure of approximately 500 psig • The recommended low-pressure control setting is a cut-out pressure of 50 psig • Make sure the pressure control you are using on a 410A system has the correct pressure range allowing it to be adjusted for the correct pressures Airon and Heil – Going the extra mile for YOU
POE Oil • R-22uses alkylbenzene oil • R-410Auses polyolester (POE) oil • Oils must be miscible with refrigerant. • miscible = able to mix together • Oils must be matched with the proper refrigerant Airon and Heil – Going the extra mile for YOU
POE Oil • Great lubricant • But ! • It’s “hygroscopic”: strong attraction to moisture • Will absorb water vapor right into the oil Airon and Heil – Going the extra mile for YOU
POE Oil Airon and Heil – Going the extra mile for YOU
POE Oil Airon and Heil – Going the extra mile for YOU