Refrigerant Manual
Read this manual carefully before beginning the installation and operation of the refrigeration system. Special attention is required to all sections identified with the. Aug 28, 2007 - www.neutronicsinc.com. ULTIMA ID - HVAC™. REFRIGERANT IDENTIFIER. OPERATION MANUAL. Manual Part Number: 5-06-7000-69-0.
ENVIRONMENTALLY SAFE R-410A SERVICE TECHNIQUES R-410A Training Supplement to the Desktop Reference and Training Guide Written by: Robert P. Scaringe Fifteenth Edition January 2016 © Copyright 2016 ALL RIGHTS RESERVED Mainstream Engineering Corporation, 200 Yellow Place, Rockledge, Florida 32955 Except as permitted by Sections 107 and 108 of the 1976 United States Copyright Act, no part of this publication may be reproduced or distributed in any form, or by any means, or stored in any database or retrieval system, without the prior written permission of the copyright owner.
Information contained in this work has been obtained by Mainstream Engineering Corporation from sources believed to be reliable. However, neither Mainstream Engineering Corporation nor its author guarantees the accuracy or completeness of any information published herein, and neither Mainstream Engineering Corporation nor its author shall be responsible for any errors, omissions, or damages arising out of the use of this information. This work is published with the understanding that Mainstream Engineering Corporation and its author are supplying information but are not attempting to render engineering or other professional or technical services.
If such services are required, the assistance of an appropriate professional should be sought. The information in this course is intended for educational purposes only. Procedures described are for use only by qualified air conditioning and refrigeration service technicians. This training course is not a substitute for any equipment Manufacturer's Operator Manual.
Take safety precautions when using all HVAC equipment. Improper use of HVAC equipment can cause explosion and serious personal injury.
Always read the entire Manufacturer's Operator Manual before turning on any equipment for the first time! Use extreme caution when working with refrigerants; hoses may contain liquid refrigerant under pressure.
Use only approved refillable storage cylinders. Do not overfill any storage cylinder beyond its rated capacity. Always wear safety glasses.
Protect the skin from flash freezing. Never turn on any equipment if you do not understand its operation. Where procedures described in this manual differ from those of a specific equipment manufacturer, the equipment manufacturer's instructions should be followed. Do not leave any refrigerant recovery or recovery-recycling machine ON and unsupervised. All refrigerant recovery and recycling devices are to be used by trained and certified refrigeration technicians only!
Again, misuse of refrigerant recovery and recycling devices can cause explosion and personal injury. Technical and legislative information presented in this book is current as of the date of the manual's latest publication. Due to rapidly advancing technology and changing regulations in the refrigerant recovery and recovery-recycling field, no representation can be made for the future accuracy of the information. Visit the EPA's Internet Home Page at for the latest details. Mainstream Engineering Corporation assumes no liability for the use of information presented in this publication. This information is presented for educational purposes only.
Manufacturer's Operator Manuals must be consulted for the proper operation of any piece of equipment. The content of this course is limited to information and service practices needed to contain, conserve, and reuse R-410A and other very high pressure refrigerants, and to prevent their escape into the atmosphere. This manual is not intended to teach air conditioning-refrigeration system installation, troubleshooting, or repair. Refrigeration technicians should already be knowledgeable in these areas prior to taking this course. This manual was prepared assuming the technician is already very knowledgeable with safety practices normally practiced in the HVAC/R industry and has worked extensively with R-22 and other high pressure refrigerants. This manual seeks to point of some of the significant difference between very high pressure and other high pressure refrigerants. Glossary of Terms Appliance Any device that contains and uses a refrigerant and that is used for household or commercial purposes, including any air conditioner, refrigerator, chiller, or freezer.
EPA interprets this definition to include all air-conditioning and refrigeration equipment except units designed and used exclusively for military purposes. Azeotrope A blend of two or more components whose equilibrium vapor phase and liquid phase compositions are the same at a given pressure. These refrigerants are given a 500 series ASHRAE designation and behave like a single refrigerant. They can be charged as a liquid or vapor. Commercial Refrigeration Refrigeration appliances used in retail food and cold storage warehouse sectors. 'Retail food' includes the refrigeration equipment found in supermarkets, convenience stores, restaurants, and other food service establishments.
'Cold storage' includes the equipment used to store meat, produce, dairy products, and other perishable goods. All of this type equipment contains large refrigerant charges, typically over 75 pounds. Compound A substance formed by a union of two or more elements in a definite proportion by weight.
Disposal The process leading to and including any of the following: (1) The discharging, depositing, dumping, or placing of any discarded appliance into or on any land or water. (2) The disassembly of any appliance for discharging, depositing, dumping, or placing of its discarded component parts into or on any land or water. (3) The disassembly of any appliance for reuse of its component parts. Fractionation The separation of a liquid mixture into separate parts by the preferential evaporation of the more volatile component.
Halocarbon A halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine. Hydrogen may or may not be present. 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-407A/B/C, R-408, R-409, R-411A/B, R-502 and R-507A. Hydrocarbon A compound containing only the elements hydrogen and carbon. Industrial Process Complex customized appliances used in the chemical, Refrigeration pharmaceutical, petrochemical industries, and in manufacturing. This sector includes industrial ice machines and ice rinks.
Isomer One of a group of substances having the same combination of elements but arranged spatially in different ways. Leak Rate The rate at which an appliance is losing refrigerant, measured between refrigerant charges or over 12 months, whichever is shorter.
The leak rate is expressed in terms of the percentage of the appliance's full charge that would be lost over a 12-month period if the current rate of loss were to continue over that period. The rate is calculated using the following formula: (Refrigerant added/Total Charge)x(365 days/year/D)x100% where D = the shorter of: # days since refrigerant last added or 365 days Low-loss Fitting Any device that is intended to establish a connection between hoses, appliances, or recovery/recycling machines, and that is designed to close automatically or to be closed manually when disconnected to minimize the release of refrigerant from hoses, appliances, and recovery or recycling machines.
Low-pressure Appliance (definition unchanged by the EPA's March 12, 2004 rule change) An appliance that uses a refrigerant with a liquid phase saturation pressure below 45 psia at 104°F. Evacuation requirements for the low-pressure category apply to these appliances. This definition includes but is not limited to appliances using R-11, R-113, and R-123. Major Maintenance Maintenance, service, or repair that involves removal of the Service or Repair appliance compressor, condenser, evaporator, or auxiliary heat exchanger coil. Medium-pressure Appliance (prior to March 12, 2004, referred to by the EPA as high-pressure appliance) An appliance that uses a refrigerant with a liquid phase saturation pressure between 45 psia and 170 psia at 104°F. R-114 appliances are at the low-pressure end since the saturation pressure of R-114 at 104°F is slightly above 45 psia. This definition includes but is not limited to appliances using R-12.
R-114, R-124, R-134a, R-401C, R-406A and R-500. Mixture A blend of two or more components that do not have a fixed proportion to one another and that no matter how well blended, still retain a separate existence (oil and water for example). Motor Vehicle Air Conditioner (MVAC) Mechanical vapor compression refrigeration equipment used to cool the driver or passenger compartments of any motor vehicle.
This definition is NOT intended to encompass the hermetically sealed refrigeration system used on motor vehicles for refrigerated cargo or the air conditioning systems on passenger buses. Section 609 certification is required for working on MVAC systems while either Section 608 Type II or Section 609 certification is required for MVAC-like A/C systems (e.g.
Farm equipment and other non-roads vehicles). Section 608 certification is required for working on hermetically sealed refrigeration systems used on motor vehicles for refrigerated cargo or the air conditioning systems on passenger buses. Due to the similarities between MVAC and MVAC-like appliances, EPA recommends that technicians servicing MVAC-like appliances consider certification under Section 609. Note that buses using CFC-12 or HFC-134a to cool the driver are MVACs, however buses using HCFC-22 are not MVACs or MVAC-like appliances, but rather high-pressure equipment covered under Type II of the section 608 test. Therefore if you service both the drivers AC system (MVAC) and the passenger AC system both a 609 MVAC and a 608 certification are required.
Likewise if your service the AC system for the cab of a truck (MVAC) as well as the refrigerated cargo container then again, you need both a 609 MVAC and a 608 certification. MVAC-like Appliances Mechanical vapor compression, open-drive compressor appliances used to cool the driver's or passenger's compartment of a non-road vehicle, including agricultural and construction vehicles. This definition excludes appliances using HCFC-22 refrigerant or their substitutes, such as R-410A or R-407. The regulations implementing Sections 609 and 608 treat MVACs and MVAC-like appliances (and persons servicing them) slightly differently. A key difference is that persons who service MVACs are subject to the Section 609 equipment and technician certification requirements only if they perform 'service for consideration', while persons who service MVAC-like appliances are subject to the equipment and technician certification requirements set forth in the Section 608 and 609 regulations regardless of whether they are compensated for their work.
Another difference is that persons servicing MVAC-like appliances have the option of becoming certified as Section 608 Type II technicians instead of becoming certified as Section 609 MVAC technicians under subpart B. Persons servicing MVACs do not have this choice. They must be certified as Section 609 MVAC technicians if they perform the AC service for compensation. Non-azeotropic Refrigerant A synonym for zeotropic, the latter being preferred though less commonly used descriptor. Zeotropic: blends comprising multiple components of different volatilities that, when used in refrigeration cycles, change volumetric composition and saturation temperatures (exhibit temperature glide) as they evaporate (boil) or condense at constant pressure.
These refrigerants are given a 400 series ASHRAE designation. Normal Charge The quantity of refrigerant within the appliance or appliance component when the appliance is operating with a full charge of refrigerant. Opening an Appliance Any service, maintenance, or repair on an appliance that could be reasonably expected to release refrigerant from the appliance to the atmosphere unless the refrigerant were previously recovered from the appliance.
Person Any individual or legal entity, including an individual corporation, partnership, association, state, municipality, political subdivision of a state, Indian tribe, and any agency, department, or instrumentality of the United States and any officer, agent, or employee thereof. Process Stub A length of tubing that provides access to the refrigerant inside a small appliance or room air conditioner that can be resealed at the conclusion of repair or service. PSIA The absolute pressure in pounds per square inch, where 0 PSIA corresponds to 29.9 inches of mercury vacuum and 14.7 PSIA corresponds to 0 PSIG (pounds per square inch gauge). PSIG The gauge pressure in pounds per square inch, where 0 PSIG corresponds to atmospheric pressure (14.7 PSIA). A positive PSIG value indicates the pressure in pounds per square inch above the ambient pressure.
“Every labor operation listed now has a labor time associated with it. Rvda flat rate manual. If a labor time might have a variance or be questionable as to accuracy for the application, the publication provides guidance on how to handle the situation.” The guide, also known as a flat rate manual, is an ideal tool for the service department when working with extended service agreement and insurance companies. The service management guide is available in two formats. A printed version is available on durable cardstock paper with a 3-ring binder.
Reclamation To reprocess refrigerant to at least the purity specified in the ARI Standard 700, Specifications for Fluorocarbon Refrigerants, and to verify this purity using the analytical test procedures described in the Standard. Recovery To remove refrigerant in any condition from an appliance and to store it in an external container without necessarily testing or processing it in any way. Recovery Efficiency The percentage of refrigerant in an appliance that is recovered by a unit of recycling or recovery equipment. Recycling To extract refrigerant from an appliance and to clean refrigerant for reuse without meeting all of the requirements for reclamation.
In general, recycled refrigerant is refrigerant that is cleaned using oil separation and single or multiple passes through devices such as replaceable-core filter driers, which reduce moisture, acidity, and particulate matter. Refrigerant The fluid used for heat transfer in a refrigeration system which absorbs heat during evaporation at low temperature and pressure, and releases heat during condensation at a higher temperature and pressure.
Under the terms of the Montreal Protocol, the U.S. Has agreed to meet certain obligations relating to the Phase-Out of HCFCs by specific dates. January 1, 2004: In accordance with the terms of the Montreal Protocol, the amount of all HCFCs that can be produced nationwide must be reduced by 35% by 2004. In order to achieve this goal, the U.S. Ceased production of HCFC-141b, the most ozone-damaging of this class of chemicals, on January 1, 2003.
This production ban will greatly reduce nationwide use of HCFCs as a group, and so the 2004 deadline had a minimal effect on R-22 supplies. January 1, 2010: After 2010, chemical manufacturers may still produce R-22 to service existing equipment, but not for use in new equipment. Air conditioning and heat pump manufacturers will only be able to use pre-existing supplies of R-22 to produce new air conditioners and heat pumps. These existing supplies would include R-22 recovered from existing equipment and recycled.
It is likely that rather than depend on this very tentative supply of R-22 for new equipment, manufactures will instead utilize R-410A in all new units. January 1, 2020: Use of existing refrigerant, including refrigerant that has been recovered and recycled, will be allowed beyond 2020 to service existing systems, but chemical manufacturers will no longer be able to produce R-22 to service existing air conditioners and heat pumps.
As R-22 is gradually phased out, non-ozone-depleting alternative refrigerants are being introduced. Under the Clean Air Act, EPA reviews alternatives to ozone-depleting substances like R-22 in order to evaluate their effects on human health and the environment. EPA has reviewed several of these alternatives to R-22 and has compiled a list of substitutes that the EPA has determined are acceptable.
However there are no drop-in replacements for any refrigerant. Every substitute refrigerant requires some change in the system design. One of the new substitutes is R-410A, a blend of hydrofluorocarbons (HFCs), substances that do not contribute to depletion of the ozone layer, but, like R-22, contribute to global warming. There are several reasons why R-410A is becoming the chosen replacement for R-22 in new systems. These reasons include.
▶ Higher Capacity Equipment: Equipment designed for HFC-410A has demonstrated up to 40% greater capacity when compared to current R-22 equipment. ▶ Easy Servicing: HFC-410A while a blend is a near azeotropic mixture, meaning it behaves almost like a pure refrigerant and therefore it can be repeatedly topped off. ▶ Safe and Easy to Use: HFC-410A has an A1 ASHRAE safety classification. ▶ Higher Efficiency: HFC-410A systems exhibit about a 10% increase in the Coefficient of Performance. That means that A/C and Heat Pump systems can be designed to meet the proposed DOE guidelines of 12 to 14 SEER.
Other possible refrigerants, which are on the list of acceptable substitutes, include R-134a and R-407C. Neither of these two refrigerants have the benefits of R-410A.
An R-134a system will have a lower Coefficient of Performance and the system will be larger than a comparable R-410A system. R-407C while not as good a replacement as R-410A, is finding applications in R-22 retrofit applications, because the pressure is comparable with that of R-22 systems, thereby greatly simplifying the refrigerant change over. However is it not a drop-in replacement for R-22. While R-407C has a potential use in retrofit applications, after the necessary system changes have been made, R-410A can never be used in retrofit applications because of the higher pressures associated with R-410A.
You cannot charge existing R-22 systems with R-410A, because the R-22 components were never pressure rated for the higher pressure of an R-410A system. Of course, the EPA will continue to review new non-ozone-depleting refrigerants as they are developed, but the industry appears to have agreed on R-410A as the best refrigerant to replace R-22 for new high-efficiency air conditioning and heat pump applications. R-410A is manufactured and sold under various trade names, including GENETRON ® AZ-20 ®, SUVA ® 410A, and Puron ®. Suva ® 410A is DuPont's registered trademark name for R-410A and Puron ® is Carrier Corporation's registered trademark for R-410A. All these refrigerants are R-410A, they all have the same chemical composition and they all can be used interchangeably in servicing R-410A units. R-410B has a very similar vapor pressure curve and performance when compared to R-410A. While 410A and 410B are very similar thermodynamically, there is little, if any, R-410B being manufactured since there is no economic or technical justification for two practically identical refrigerants and the industry has chosen one of the two refrigerants, namely R-410A.
The industry's choice of R-410A over R-410B is related to patent licensing and legal issues; it is not related to technical superiority of one of these refrigerants compared to the other. Percentage Composition of Substitutes for HCFC-22. Refrigerant 410A is a near azeotropic refrigerant, meaning that while it is a non-azeotrope refrigerant it exhibits a very low temperature glide during evaporation or condensation, making it behave very nearly like an azeotropic refrigerant.
This means that while it is still best when charging to remove the R-410A as a liquid from the storage cylinder, there are no concerns about fractionation of the R-410A refrigerant should a leak occur. That means that a R-410A system can be topped-off without any concern about altering the composition of the blend.
Typically, these are all items of concern when dealing with non-azeotropic refrigerants, but again R-410A behaves nearly like an azeotropic refrigerant. Many manufacturers have already started building R-410A systems, and these systems operate at higher pressure.
While most new tools, gauges, and recovery/recycling equipment are being fabricated to accommodate the higher pressure of R-410A, most of the older tools were never designed for the higher operating pressure of R-410A. Depending on the age of some of your tools, working with R-410A, may require new tools, recovery tanks, and recovery/recycling machines that are rated for R-410A's higher operating pressure. The high-pressure gauge on a service manifold set has a continuous scale, usually calibrated to read from 0 to 500 psig. This does not mean the gauge set is actually rated for use up to 500 psia. A typical rating on older gauge sets and/or hoses is only 340 psig. When using R-410A you must use a gauge set rated for at least 800 psig (with a 4,000 psig burst pressure on the manifold and the hoses).
R-410A requires recovery tanks and recovery/recycling machines rated for at least 400 psig. Theoretical Air Conditioner Performance Comparison. Assuming 110°F Condenser, 45°F Evaporator, 5°F Subcooling, 15°F Superheat R-22 R-407C R-410A Compression Ratio 2.66 2.83 2.62 Compressor Discharge Temperature 171°F 167°F 166°F Compressor Discharge Pressure 226 psig 241 psig 364 psig Temperature Glide 0°F 9°F 0°F As can be seen from, the higher discharge pressure of the R-410 means that old line sets and recovery tanks, which where normally rated for 350 psig maximum operating pressures are inadequate for use with R-410A.
Check your equipment to see if it has been designed for use with R-410A. Displays a plot of the saturation pressure of various new refrigerants.
R-22 has also been plotted on this graph to provide a means of comparison. Contains a more detailed table of the Saturation Pressure-Temperature behavior of R-410A. Comparison of the Saturation Pressure of Common 400 Series Blends. Existing units using R-22 can continue to be serviced with R-22.
There is no EPA requirement to change or convert R-22 units for use with a non-ozone-depleting substitute refrigerant. In addition, the new substitute refrigerants cannot be used without making some changes to system components. As a result, service technicians who repair leaks to the system will probably continue to charge R-22 into the system as part of the repair.
R-410A be not be used to retrofit existing R-22 equipment because of the much higher discharge pressure and cooling capacity. R-410A can ONLY be used in equipment designed specifically for R-410A. R-22 systems can be retrofitted for R-407C, and since the saturation pressures are similar, many of the components of the R-22 system can be used in the R-407C system. However, R-407C is not a direct drop in replacement. Since R-22 can still be used, and because there are no current or future proposed requirements to force the conversion of R-22 systems, there is no incentive to convert existing R-22 systems to R-407C.
As a practical matter, there are very few R-407C conversions. The transition away from ozone-depleting R-22 to systems that rely on replacement refrigerants like R-410A has required redesign of heat pump and air conditioning systems. New systems incorporate compressors and other components specifically designed for use with specific replacement refrigerants. Because of the higher pressure for R-410A, most system components have been designed with increased wall thickness. In addition, expansion valves and filter-driers specifically designed for R-410A must be used. New virgin refrigerant for use by air conditioning and refrigeration service personnel are usually packaged in disposable containers.
Disposables are manufactured in three sizes: 15-, 30-, and 50-pound capacities and should never be refilled. New disposable containers use a check valve and cannot be refilled. Refrigerant manufacturers voluntarily color code cylinders for their products. Lists the color-coding for common refrigerant blends; however, the shade of color may vary somewhat among manufacturers. Tank Color Coding for Common 400 Series Blends. 400 Series Blend Color R-401A light purple R-401B yellow-brown R-401C blue-green R-402A light green-brown R-402B green-brown R-404A orange R-407C medium brown R-410A Pink DOT 39 (DAC) cylinders which are used for CFCs, HCFCs, and most HFCs are manufactured to handle the highest-pressure refrigerant, CFC-502; however, they cannot be used for R-410A. DOT 39 (400) cylinders are designed to handle R-410A.
The DOT requires that disposable cylinders for R-410A be rated for a service pressure of 400 psig. Cylinders rated for R-410A must be rated for a service pressure of 400 psig. The R-410A cylinders are leak tested at 500 psig.
Also, per DOT Specification 39, one cylinder per thousand is pressurized to the point of failure and this cylinder must not rupture below 1000 psig for the R-410A cylinders. These tests are intended to assure that users receive safe, high-pressure and leak-free containers. A comparison of the disposable cylinder design details for R-410A cylinders and R-22 cylinders is presented in. Every cylinder is equipped with a safety-relief device that will vent pressure from the cylinder before it reaches the rupture point. Two versions are approved for DOT 39 refrigerant cylinders. The most common is a rupture disk, typically welded to the cylinder shoulder. Should R-410A cylinder pressure exceed the safety-relief pressure (minimum pressure is 525 psig for R-410A), the disk will burst and the cylinder content will vent and prevent an explosion.
The second design is a spring-loaded relief port integrated in the valve stem. When the internal pressure on this design exceeds the relief pressure, the pressure forces the spring to open and the contents are vented through the relief port.
Cylinders can become over-pressurized for several reasons. However, the primary cause is overfilling.
When temperatures increase, the liquid refrigerant expands into the vapor space above the liquid causing pressure to rise gradually as long as a vapor space is available for expansion. However, if no vapor space is available due to an overfilled cylinder (and no pressure-relief valve exists), the liquid will continue to expand and the cylinder will rupture to provide room for the expanding liquid. When a cylinder ruptures, the pressure drop causes the liquid refrigerant to flash into vapor and sustains the explosive behavior of the rupture until all the liquid is vaporized.
Refrigerant Piping Manual
The rupture of a refrigerant cylinder containing liquid refrigerant that flashes into vapor is far worse than the rupture of a compressed-air cylinder under the same pressure. If a refrigerant cylinder reaches a full-of-liquid (no vapor space) condition, the internal pressure rises very rapidly under minor increases in temperature.
If the safety valve is not able to vent this rapid increase in pressure, the cylinder will explode. Safety valves are very important. Never tamper with a cylinder safety device. Cylinders can be over-pressurized if they are connected to the discharge side of a refrigeration, air conditioning, or recovery system.
In such a case, the compressor can create a pressure and flow that is greater than the flow capacity of the relief device on the cylinder, thereby defeating the purpose of the relief valves and possibly resulting in cylinder rupture. Disposable cylinders should be emptied of all contents using a refrigerant recovery device.
Once emptied, the cylinder's valve should be opened to allow air to enter, and the cylinder should be punctured with the valve still open (rendered useless). Used cylinders can be recycled with other scrap metal. Never leave used cylinders with any residual refrigerant, either outdoors or at a job site. The internal pressure of a cylinder with one ounce of liquid refrigerant is exactly the same as a full cylinder.
An abandoned cylinder will eventually deteriorate and can explode if the cylinder wall weakens. Never refill a disposable cylinder. Disposable Cylinder Design Details.
. Installation Instructions R410-A Refrigerant SPLIT SYSTEM Premium Line AC CONDENSERS Save This Manual for Future Reference 4 03 Dec. I Installation Instructions R410-A Split System Condensers Installation/Startup Information These instructions must be read and understood com- CAUTION pletely before attempting installation. Improper installation, adjustment, alteration, service or maintenance can void the warranty. The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid Installation or repairs. I Split System Condensers R410-A Installation Instructions Locating The Outdoor Unit: Check local codes covering zoning, noise, platforms.
Rooftop installations are acceptable providing the roof will support the unit and provisions are made for water drain- If practical, avoid locating next to fresh air intakes, vent or age and the noise or vibration through the structure. R410-A Split System Condensers I Installation Instructions Figuro2 C,oarancos Recommended Clearances Minimum Clearances 24 24 24 24 Minimum Clearances Minimum Clearances 18 18 Minimum Clearances 24 24 24. I Split System Condensers R410-A Installation Instructions Installing Refrigerant Lines CAUTION Component Matches Check to see that you have the proper system compo- If ANY refrigerant tubing is buried, provide a 6 in. Verti- nents. ONLY R410-A APPROVED MATCHED SYSTEM cal rise at service valve. I Installation Instructions R410-A Split System Condensers 4.
Apply heat absorbing paste or heat sink product to pre- Figure 4 Oil Traps vent damage to the service valve. CAUTION 10' Max Do not heat valve body above 250 degrees F.
Refrigerant Manual
I Split System Condensers R410-A Installation Instructions The service valve cap is a primary seal for the valve and Triple Evacuation Method must be properly tightened to prevent leaks. Make sure cap The triple evacuation method should only be used when is clean and apply refrigerant oil to threads and sealing sur- vacuum pump is only capable of pumping down to 28 in. I Installation Instructions R410-A Split System Condensers Electrical Wiring A/C Control Electrical Shock Hazard. Shut off electric power at fuse box or service pan- el before making any electrical connections. Contactor Failure to shut off electric power can result in, Low Voltage property damage, personal injury and/or death.
I Split System Condensers R410-A Installation Instructions Set Thermostat selector switch to OFF. NOTE: If superheat or subcooling charging conditions are not favorable, charge must be weighed in accor- Set room thermostat at desired temperature. Dance with unit rating plate 0.5 oz/ft of 3/8-in.
York Refrigerant Manuals
Liquid line sure setpoint is below indoor ambient temperature above or below 25 ft respectively. I Installation Instructions R410-A Split System Condensers Figure 12 Required Liquid-Line Temperature (°F) LIQUID REQUIREDSUBCOOLING LIQUID REQUIREDSUBCOOLING PRESSUREAT TEMPERATU RE PRESSUREAT TEMPERATU RE SERVICE VALVE (°F) SERVICEVALVE (°F) 12 I 14 (PSIG) (PSIG) I 10 14 I 16 Figure 13 Superheat Charging EVAPORATORENTERING AIR TEMPERATURE(°FWB) OUTDOOR. I Split System Condensers R410-A Installation Instructions Figure 14 Required Suction-Line Temperature SUPERHEAT SUCTION PRESSURE AT SERVICE PORT(PSIG) TEMP(°F) 107.8 112.2 116.8 1212 126.0 130.8 138.8 140.8 145.8 Maintenance To Check System Refrigerant Charge (Heating Mode) The recommended method of addition or removal Electrical Shock Hazard. R410-A Split System Condensers I Installation Instructions Never use a weather cover over the outdoor unit un- Keep the coil free of grass clippings, weeds and other debris. BE SURE TO TU RN OFF ELECTRICITY BE- less it is a ventilated type or made of breathable fabric FORE CLEANING!
That will allow moisture to evaporate rapidly. I Split System Condensers R410-A Installation Instructions R410-A QUICK REFERENCE GUIDE R-410A refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servic- ing equipment and replacement components are designed to operate with R-410A. R410-A refrigerant cylinders are rose colored. R410-A refrigerant cylinders.