brazing 410a lines

No brazing no tools, no nitrogen purge, no hot work safety concerns. A Little expensive, but well worth it. The lines that carry the refrigerant between the evaporator and condenser coils and through the compressor and expansion device typically are copper. 6) to the actual line lengths (Line 1) to arrive at the Total Equivalent Line Length for each refrigerant line as shown on Line 7. I have an R410A unit and I've read that an inert gas must be used to sweep the lines while brazing due to the r410a's ability to move the oxidation through the system than compared to an R22. Soldering and brazing - Gray Cooling Man Air Conditioning ... some experience brazing R-410A system connections. I red that R 407c and R 410a are non flamable. When you're brazing you're going to need to heat your lines up until they're basically . PDF Refrigerant 410a - Rses 4. So, the big question is: The most common rods used for typical HVAC brazing are 0%, 5%, and 15%, with several other levels mixed in there. Be sure to follow the Never install suction−line filter drier in the liquid−line of an R−410A system.! The POE oils used in R-410A applica-tions will clean any copper-oxide present from the inside of the refrigerant lines and spread it throughout the system. Markets: This may cause a blockage or failure of the metering device. 8. Braze 5-in. 3 and install filter drier as follows: 1. An R-410A system may be operating at over 600 psi and not have the high-pressure safety switch open. • The dealer did not clean the existing line set and did not bleed nitrogen thru the system during brazing. Braze 5 in. Uncoil the refrigerant tubing while taking care not to kink or dent it. A field-provided adapter may be required to match line set connections. Support and secure the loop. Refrigerant . Use a debur-ing tool to debur the pipe ends. "Sweep" the refrigerant line with nitrogen or inert gas dur-ing brazing to prevent the formation of copper-oxide inside the refrigerant lines. Low-pressure switches are also found on . 1 (Single) Sweat or Braze. 4. In the October 2009 edition of the RSES Journal, The Harris Products Group discussed how to make an R-410A System leak-free.This is especially useful following Jan. 1, 2010, when air-conditioning manufacturers will cease production of new equipment that uses R-22 refrigerant. If pressure drop exceeds 3 psig, replace suction−line and liquid−line filter driers. Refrigerant . We will be brazing or silver soldering refrigerant A/C lines for HVAC equipment! material such as a wet cloth while brazing. With six percent silver, this type of brazing rod starts to melt at 1,190 °C. Great brazing rods.Easy to braze with. Also known as Rectorseal 87023 PRO-Fit 7/8" Union.UL Listed.ApplicationsAC/R - Liquid/Suction LinesGlycolNon-Potable WaterProduct ParametersContinuous Operating Temperature: 250°FO-Ring Temperature Rating -40°F / 250°FMaximum Rated Pressure: 653 PSIMinimum Burst Pressure: 2,100 PSIVacuum Pressure Capability: 30 . • POE oils absorb moisture rapidly. (127 mm) liquid tube. material such as a wet cloth while brazing. The POE oils used in R-410A applica-tions will clean any copper-oxide present from the inside of the refrigerant lines and spread it throughout the system. • R-410a , as with other HFCs, is only compatible with POE oils. for brazing because the extended fittings reduce the possibility of damaging the moisture indicator element when the PSG is brazed into the system. Braze vapor line adapter to vapor line making sure Schrader valve is towards the left side when viewing the front of the unit. Clean both internal and external surfaces of the tubing This can be a serious problem if suction lines are not sized properly and pressure loss is 8 or 9 psi. Parker ZoomLock braze-free fittings are specially designed to join copper piping without the use of a brazing torch. there was almost a fight on that job. Gauge sets, hoses, Personally, I would not use stay bite on an R22 system, much less a R410A system. Flow arrow must point towards indoor coil. Remove the pressure tap port valve cores before brazing the refrigerant tubing to the service access valves. You can cook the valves if you aren't fast with the torch, and if you're too fast, you'll get a leak. These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Units involved: All R-410A Split Systems, AC and Heat Pumps. It is a tin-silver alloy and rated for 410a. The same model has a loss-of-charge liquid-line switch that opens at about 20 psi and resets at about 45 psi. Thank for you . 2. Can I do brazing between these valves after closing it, when refrigerant is inside line at about 8 bar pressure. On commercial projects, a skilled electrician handles the electrical hookups, a controls technician handles the control wiring, and a pipe fitter handles the pipework, including the . Verified Purchase. Patented leak-resistant, double O-ring & grip ring seal design for both CFC & HCFC refrigerants Use only R-410A approved service equipment. The top of the inverted loop must be above the top of the indoor unit coil. 4. This is commonly referred to as the suction line, but it is also called the return line or vapor line. A flux is also required when using high silver braze alloys like Safety Silv® 45 or 56. This meant the metals used were 60% . Using the Nominal Compressor Tons and the line sizes Brazing to make an R-410A System Leak-free. Brazing fluxes contain 15 - 35% water so we want to keep excess flux from inside the lines. 4. By Robert Scaringe, P.E., Many contractors are experiencing compressor burnout problems with R-410A HVACR systems soon after they're converted from R-22 refrigerant. Refer to Fig. Refer to Fig. Proper Refrigeration Piping Installation Practices - Installing a new air conditioning and heating system requires skill and knowledge of proper procedures in electrical wiring, controls wiring, and pipework. I think there's no question that soldering is the way to go for suction line on a straight cool and refrigeration systems which is harder to braze due to larger size and you don't have to allow for temperature to 250F allow for strength at the same temperature as compressor discharge line. To pre-vent damaging the PSG, ensure ample heat is supplied to the fittings and point the torch tip away from the PSG body. Brazing › As per common HFC or HCFC refrigerants such as R410A & R22, R32 will decompose and release toxic substances if heated to high temperatures over 570ºC. 3. 3. 4. 3. Amana ASZ Series Heat Pump - 2 Ton - 14 SEER - R410A. Liquid Line Fitting. An inverted suction line trap must be installed on the suction line just before the inlet to the indoor unit (see Figure 4-1). Table 1. the refrigerant lines. The nitrogen displaces oxygen in the lines and minimizes formation of oxides which can dislodge and get trapped in the TXV or metering orifice, causing premature compression failure. The percentage is the percentage of silver content in the rod. These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Wrap filter drier with damp cloth. It has valves in the liquid line before and after dryer. Refrigerant lines should be supported to prevent sagging in the pipe that can interfere with oil return back to the compressor. The only real reason to use lower silver levels is the cost, and the difference can have many techs and owners wondering what the difference is. › To avoid the possibility of this occurring during brazing, the system should be purged with dry nitrogen to ensure that there is no residual refrigerant present. An inverted trap is installed on the suction line before the inlet of indoor unit. 3.5 PRECAUTIONS DURING LINE INSTALLATION CAUTION This system uses R410A refrigerant which operates at higher pressure than R-22. Carrier has a unit with the high-pressure switch set at 610 psi. Monitor pressure drop across drier. Stay brite #8 has a melting temp at 430* and a tensile strength of 15,000 psi vibration making it more than strong enough to handle the vibration of discharge lines. Keep in mind when brazing that the exterior of the APR Control is stainless while the interior is copper clad. If the line set is longer than this, you will have to replace the line set with larger lines. Date codes involved: All R-410A Split Systems Details: Over the past several years, and primarily since the changes in the law requiring the Why Use Nitrogen when Brazing HVAC Line Sets? Solder 5% Silver, Three Sticks, Used To Braze Copper Refrigerant Lines Note: This product is designed to be used with Acetylene and Oxygen tank torch kits. NOT Propane or MAP gas torches. Professionals who use ZoomLock braze-free fittings report time and labor savings of 40%-60% as compared to brazing. 2. If the lines must pass under or through a concrete slab, ensure lines are adequately protected and sealed. You can use Stay brite 8 solder. A conversion should always include condenser, evaporator, and line-set change-outs, but the problem lies in the . If suction−line filter drier was installed for system clean up, operate system for 10 hr. 4. In 410a refrigerant, for example, the polyolester lubricants, (POE), are more hygroscopic; they readily absorb water. Never install suction−line filter drier in the liquid−line of an R−410A system.! It resets at about 420 psi. Use only R-410A approved service equipment. Monitor pressure drop across drier. For joining copper lines we usually use brazing rods that are made out of a copper-phosphorous combination. • R410A is a very good solvent and will wash all contamination into the TXV, filter drier and on heat pump the reversing valve pilot tubes. I mention if done correctly since acid flux shouldn't be inside a refrigeration circuit. Sign in To View Price And Inventory. INSTRUCTIONS FOR BRAZING FITTINGS TO PIPE AND TUBING with BRAZE, EASY-FLO and SIL-FOS LOW-TEMPERATURE SILVER ALLOY BRAZING with BRAZE, EASY-FLO or SIL-FOS i s extensively used for joining pipe and tubing. Use either table 1 or 2 to determine correct braze connection sizes. Industry standard is 15% Silver Alloy. To silver solder the two tails into the filter body (Prior to going to site. Refrigerant Line Connections LINE SIZES The refrigerant line sets should be sized according to the recommendations given in the air conditioner unit instal-lation instructions. While you might get away with using stay brite, I think your odds of running into problems would be much greater. There's been the rare occasion on ref line repair when there was no way I was brazing; carpenter shot 5 16cc nails in our line set. 3. It makes assemblies that are strong, permanently leak-tight and maintenance-free, and is an extremely simple, low-cost process. I've used it on number of jobs, 410a included, with no problems. Anyone who For R410A, braze all the way. Soldering is commonly used to provide a permanent connection for copper wires, or in our industry, for sealing water or gas tight connections of piping. The lines should be installed so that they will not obstruct service access to the coil, air handling system or filter. Carrier has a unit with the high-pressure switch set at 610 psi. EL16XC1 (HFC-410A) SERIES UNITS WITH ALL-ALUMINUM COIL This literature is intended as a general guide and does not supersede l ocal codes in any way. Connect and braze liquid refrigerant tube to the filter . Low-pressure switches are also found on . R22, I braze 99.99999999% of the time. Long Line Applications Guideline, Single−Stage and Two−Stage R−410A 421 06 5100 04 Specifications subject to change without notice 3 C. Introduction An application is considered Long Line, when the refrigerant level in the system requires the use of accessories to maintain With big lines (1 3/8") and above I'll braze with nitro purge, but a residential install is . The manufacturer suggests that nitrogen be used while soldering/brazing joints to reduce build up inside the pipes from oxidation. Joywayus 1/4" SAE Male 5/16" SAE Female Swivel Port Straight Adapter For R410A Mini Split HVAC System (Pack Of 2) . liquid tube to the indoor coil. The POE oils used in R-410A applica-tions will clean any copper-oxide present from the inside of the refrigerant lines and spread it throughout the system. 23.125000. The last step in the process is to verify that the sizes of refrigerant lines selected in Step 3 are valid for the cal-culated Total Equivalent Lengths of each line. I would only braze the lines myself. "Sweep" the refrigerant line with nitrogen or inert gas dur-ing brazing to prevent the formation of copper-oxide in-side the refrigerant lines. Robert Henson. Braze filter drier to above 5-in. No nitrogen purge needed since Staybrite […] The same model has a loss-of-charge liquid-line switch that opens at about 20 psi and resets at about 45 psi. Dec. 1, 2007. To retrofit an R-22 system with R-410A system your line set must not be more than 25-50 feet in total distance. Failure to do so will ruin the valve . 14 SEER Heat Pump with Environmentally Balanced R-410A Refrigerant, 2 Tons Split System, 208/230 Volt 1 Phase, 60 HzREFRIGERANT CIRCUITScroll compressors on all modelsSuction line accumulator factory installedBi-flow filter-drier included for field instal The larger line typically carries a cool gas and is insulated. Inlet tube Outlet tube Vapor line adapter Figure 6 Figure 7 11. Join refrigeration lines in seconds by simply cutting the lines, deburring the ends, and push to connect. 3 and install filter drier as follows: 1. Leak Test Line Set . 22000. 9. Refrigerant Line Connections IMPORTANT To avoid overheating the service valve, TXV valve, or filter drier while brazing, wrap the component with a wet rag, or use a thermal heat trap compound. Reviewed in the United States on May 16, 2020. Use Stay Clean flux and a Bernzomatic jet torch. The manufacturer suggests that nitrogen be used while soldering/brazing joints to reduce build up inside the pipes from oxidation. Braze filter drier to above 5 in. If you are reusing the line set (not recommended if replacement is at all possible) you must flush your system to remove the mineral oil . Step by step tutorial on how to braze copper pipe like a pro! Clean the fittings bright and use as little flux as possible. After brazing, quench the joints with water or a wet cloth to prevent overheating of the service valve. CAUTION 7. Refrigerant Line Brazing 7.1 Braze The Refrigerant Lines STEP 1 - Remove caps or plugs. 7. After brazing, quench the joints with water or a wet cloth to prevent overheating of the service valve. The top of the inverted loop must be slightly above the top of the indoor unit coil and can be created simply by brazing two 90° long radius elbows together if a bending tool is available. All connections to the APR Control should be made with Stay-Silv® 15 or equivalent Brazing Alloy. Product: 56175. liquid tube to the indoor coil. Braze the inlet tube assembly (female fitting) to the field refrigerant line. Lennox approved Stay-Brite #8 for 410A. Wrap filter drier with damp cloth. - COPPER PIPES. HouseCall Pro Linkhttps://housecallpro.com/stephenrardonRardon Home Performance Facebook Pagehttps://www.facebook.com/RardonHomePerformance/?ref=aymt_homepag. 5.0 out of 5 stars Nice Brazing Rods for A/C copper lines. An R-410A system may be operating at over 600 psi and not have the high-pressure safety switch open. MFG: ASZ140241. The cooling assemblies consist of the cooling coil, insulated coil housing, insulated condensate pan with external drain connection, internal suction line piping, thermostatic expansion valve, and a refrigerant distributor. • Do not install a suction-line filter drier in liquid line. To repair a refrigerant leak in the computer room of an office tower tenant, Davis Mechanical Service, Inc. turned to Parker Hannifin Corporation's ZoomLock™ Braze-Free Fittings, avoiding the need to use a torch or get a burn permit. Condenser Motor Type. 3. In some instances it was required that I use stay #8 instead of brazing the lines. My personal opinion is by the time I've heated the copper with a B tank to fill the cup with braze rod I've already weaked the copper with extreme, where as a mapp gas with SB#8 is much quicker, and not as hot. Use a debur-ing tool to debur the pipe ends. 2. Flushing Techniques For R-22 to R-410A Conversions. Product FeaturesShort cabinet with easy access.High efficiency lanced fin design.R-22, R-410, A/C & heat pump compatible.Copper refrigerant connections for easy brazing on both copper and aluminum slab models.Dual 3/4" FPT condensate drains on front a (127 mm) liquid tube. 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Driers with rated working pressures less than 600 psig determine correct braze connection.. After dryer parts to complete blower assemblies, you will find them at general Supply Stocks a complete line Colerman! To connect liquid-line switch that opens at about 20 psi and resets at about psi! R410A refrigerant which operates at higher pressure than a Sil-fos brazed pipe connection migration to outdoor unit from unit! When refrigerant is inside line at about 20 psi and resets at about 8 bar pressure adequately! Between these valves after closing it, when refrigerant is inside line at about 45 psi system... At about 8 bar pressure at about 20 psi and resets at about bar... Suction−Line and liquid−line filter driers ), are more hygroscopic ; they readily absorb water Staybrite... Using high silver braze alloys like Safety Silv® 45 or 56 > R410A braze or Staybright before and dryer. Unit coil obstruct service access to the field refrigerant line brazing 7.1 braze the refrigerant lines STEP 1 - caps... Or filter braze-free Quick connect Union... < /a > you Do not use liquid-line filter driers rated...: //www.cangas-systemss.com/info/is-nitrogen-a-must-while-brazing-ac-lines-34159046.html '' > Mapp gas for brazing??????! Step 1 - Remove caps or plugs the problem lies in the line set longer. Assembly ( female fitting ) to the filter drier as follows: 1 5 Nice... This is commonly referred to as the suction line, but critical STEP in 410a.. Into the filter body ( Prior to going to site brazing or silver soldering refrigerant A/C lines HVAC!? threads/ac-refrigerant-lines-braze-or-solder.32654/ '' > Quick connect refrigerant fitting... < /a > you not! Of indoor unit or plugs can I Do brazing between these valves closing... Connections, refrigeration applications are perfect for low temp brazing and small tubing change outs and all new Piping.. 3 psig, replace suction−line and liquid−line filter driers with rated working pressures less than an hour and with disruption! An inverted trap is installed on the suction line before and after.... Bright and use as little flux as possible, ( POE ), are more hygroscopic they... Ends, and push to connect use liquid-line filter driers or through a concrete slab, ample. Often overlooked, but the problem lies in the rod PSG body tubing change outs and new! No nitrogen purge is an extremely simple, low-cost process personally, I think your odds of running problems. Thru the system during brazing I had already used my newly acquired double barrelled torch... The whole repair in less than 600 psig are perfect for low temp brazing and small tubing change and., operate system for 10 hr you Do not use stay bite on an r22 system, less...: //terrylove.com/forums/index.php? threads/ac-refrigerant-lines-braze-or-solder.32654/ '' > I just installed a new goodman condenser to 70 % higher pressures R-22... To debur the pipe ends units use R-410A refrigerant which operates at 50 to 70 % pressures... Usually use brazing rods for A/C copper lines we usually use brazing rods that made... Get away with using stay brite, I braze 99.99999999 % of the Control. A conversion should always include condenser, evaporator, and is an often overlooked, but critical in. Made with Stay-Silv® 15 or equivalent brazing alloy as possible pipe ends be inside refrigeration. 8 or 9 psi > AC refrigerant lines STEP 1 - Remove caps or.... After dryer set connections low-cost process as the suction line must be above the of! Temp brazing and small tubing change outs and all new Piping applications is line... This type of brazing rod starts to melt at 1,190 °C, no hot work Safety concerns 1 2! 600 psig amp ; repair ; air Conditioning... < /a > no brazing no tools, no nitrogen,... Used in this system less than 600 psig my newly acquired double barrelled Turbo.! The interior is copper clad the line set and did not bleed nitrogen thru the system during brazing rods. Refrigerant is inside line at about 8 bar pressure connections to the unit ( male fitting to... While taking care not to kink or dent it your new Coleman furnace or air conditioner Installation problem suction! New Coleman furnace or air conditioner Installation than 600 psig inside the from! Proper refrigeration Piping Installation & amp ; repair ; air Conditioning... < /a > 2 keep in when... Tube to the indoor unit 20 psi and resets at about 8 bar pressure joining! Will have to replace the line set with larger lines join refrigeration lines seconds. Systems, AC and heat Pumps reduce build up inside the pipes from oxidation I brazing. Use stay # 8 for 410a PSG body refrigerant is inside line at about 20 psi and at! Sized Properly and pressure loss is 8 or 9 psi, no hot work Safety concerns soldering material used called... R410A system at general Supply: //skipthewarehouse.com/78-coupling-sbc34-braze-free-quick-connect-refrigerant-fittings '' > 7/8 & quot braze-free. Is copper clad > is nitrogen a must while brazing AC lines HFC 410a high side?. Up, operate system for 10 hr example, the soldering material used was called 60-40 into. Switch that opens at about 8 bar pressure heat is supplied to the drier. And point the torch tip away from the PSG, ensure lines are not sized Properly and loss. //Forum.Heatinghelp.Com/Discussion/161960/R410A-Braze-Or-Staybright '' > I just installed a new goodman condenser and install filter drier was installed system. It has valves in the United States on may 16, 2020 are... Outdoor unit from indoor unit coil field refrigerant line brazing 7.1 braze the of! Simple, low-cost process line typically carries a cool gas and is an extremely simple, low-cost process than. > you Do not use stay # 8 for 410a of the time low-cost process is inside line about. These valves after closing it, when refrigerant is inside line at about 45 psi than 600 psig

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