Applications department recommendations are listed on the system summary sheet furnished if requested with the job. The most popular version among the program users is 1. Liquid line sizing for heat pumps is currently limited to 38. Preset changeable count rules for almost all types of source code files. Rebate center sizing guide ductwork sizing guide efficiency requirements seer savings calculator. Basic air conditioning piping recommendations suction. Large refrigerant database, including r4a, 407c and 410a.
How to size your air conditioner or heater measure my. Use the york comfort cooling piping software to determine liquid line pressure drop to select proper orifice sizing. Office tools downloads saravel refrigerant pipe sizing by saravel and many more programs are available for instant and free download. A line set includes a supply and return line, which runs cooled r410a refrigerant between the outdoor compressor and the indoor cooling unit. Also, refer to the line sizing charts in these instructions. There is a double suction riser on one of the circuits. Both refrigerants are compared at the conditions of the middle evaporating temperature of. Acceptable suction line sizes are are shown for each size and type system. Another method for sizing air conditioners is determining the size of the air conditioner system thats currently in place. For long line installations over 80 feet, if the line set passes through a high ambient temperature zone, 12 thick suction line insulation is required to reduce loss of capacity. Line sizing in sizing refrigerant lines, cost considerations favor keeping the line size as small as possible. However, suction and discharge line pressure drops cause loss of compressor capacity and increased power usage. Ability to count code lines, comment lines and mixed lines in single files as well as entire directories. These tasks include duct sizing, wire sizing, three way coil interpolation, mixed air and state point psychrometrics, fan curve and cost analysis, ufactor calculations, natural gas pipe sizing, refrigeration line sizing, general pipe sizing, hotchilled water pipe analysis and.
You need to get your calculator out, subtract 25 feet of line that the manufacturer already allows for from the 63 feet total line set 63 25 38 feet. Okay hopefully ive made my point that the two factors suction line pressure loss and suction line velocity are the most important parts of sizing suction lines for any air conditioning system either residential of commercial. Once you have determined the sizing requirements for the cooling side of your heat pump system, you then need to select the proper supplemental heating element that is included with all of our heat pumps. Incorrectly sizing the suction line can lead to oil return problems or a reduction in the systems capacity. Refrigerant line connections do not let refrigerant lines come in direct contact with plumb insulation is necessary to prevent condensation from forming. Clipping is a handy way to collect important slides you want to go back to later. You need to find your refrigerant type and in the example we said r410a. The goodman gsc 3 ton air conditioner nominal seer singlestage r22 refrigerant gsc361 has been discontinued. Elite software htools program collection of hvac tools. The program eliminates all the tedious calculations necessary when piping is sized manually and automatically corrects for all system operating conditions.
Glass fiber or heat resistant polyethylene foam thickness. This warm air is pushed through connecting ducts to air vents throughout the home, increasing the interior temperature until it reaches the set point on. Split system refrigerant piping guide united coolair. If the pipe chosen is too large, the velocity of the refrigerant flow will be reduced. If this method is not practical, each compressor discharge line should be connected to the main hot gas line in a y or offset t, as in figure 66f02a and figure 66f02b, but. Why have these problems when there is a computer program that does accurate line sizing with all of the new refrigerants. Goodman r410a service manual power equipment direct. Does anyone know where i can can get a general rule chart. The following materials should be used for all refrigerant piping. This pc program is suitable for 32bit versions of windows xpvista7810.
If you are having trouble downloading this software, or are getting an error message, you may have a firewall issue. Sizing the equipment load requires the consideration of several factors. My interpretation from this table is a 34 suction could be used but you may lose 1% capacity of the system and the same with 78 line for 50. Revised 61699 r12, r22, r502, r4a, and r404a commercial refrigeration page 3 of 6. Tm the expansion device in turn throttles the refrigerant from the high side pres. The program eliminates all the tedious calculations necessary when piping is sized manually and automatically corrects for all system operating conditions, interpolating and adjusting data in the tables and charts. Refrigeration line sizing tool has the following new refrigerants. Proper size hvac system heating and cooling goodman. Refrigerant line size based on pressure drop in suction. Calculations tubing equivalent length, tube size and refrigerant. Cond unit suction line sizes capacity at system evaporator design temperature. Refrigerant line sizes for remote systems revised 6. The refrigerant piping design program will select pipe size based on a specified maximum pressure drop in the line and compute minimum required capacity for oil entrainment in risers. Suction lines use table 3 through table 6 to properly size suction lines.
Following is a brief discussion regarding the purpose of the distributor nozzle, and how critical proper nozzle sizing during a refrigerant conversion is to maintaining. Experienced engineering consultants, with an extensive knowledge of the subject, design all of our products. Line sizing every splitsystem unit is shippe d with a factorymounted sweat fitting. Check out experts recommended alternatives for another top central air conditioner. Line set size of suction line for 4 ton goodman, seer 14. If those were omitted or if there were air or water leaks into the wall would i expect a problem along the refrigerant line piping route. Suction line 2f, 750 fpm horizontal, 1500 fpm suction riser, 4000 fpm pitched 12 per 100 ft. If not, consider the larger line size shown in table 1. Long line applications guideline r 410a split systems. A theoretical vapor compression cycle analysis has been done using the recent refrigerant property data. Individual programs assist in peak load calcuation, system. Refrigerant piping design carrier commercial systems. Deoxidized phosphorous seamless copper pipe or equivalent 2.
Proper refrigeration piping installation practices for hvacr. A lot of real science is included in the methods of calculation when selecting the right size central air conditioner for your home. But their tp107 long line set application for r410a for a 4 ton unit shows suction line values at 34, 78, and 1 18. Application guide 32300903 chapter i refrigerant piping liquid lines for split cooling and heat pump systems the purpose of the liquid line is to convey liquid refrigerant from the condenser to the expansion device such as the expansion valve or fccv accutron. Refrigerant line charge adders york central tech talk. If you are replacing an existing heat pump system simply locate your main breaker panel and identify the heating breaker. The importance of changing out copper refrigerant lines hvac. Future updates are planned to include alternate liquid line sizing for heat pump applications. Download refrigerant pipe sizing software for free windows. A pump, called a compressor, is used to move the refrigerant between the two coils and to change the pressure of the refrigerant. This is a simple, yet powerful little application for sizing refrigerant piping for many different refrigerants. 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. Again, this is just rule of thumb sizing and should not be used in place of an accurate line sizing program. Introduction an application is considered long line, when the refrigerant level in the system requires the use of accessories to maintain acceptable refrigerant management for systems reliability.
Simulate your system with the right refrigerant and export the results to excel. For instance, one of these methods is a residential load calculation. Refrigerant piping run in an insulated wall cavity ought to be insulated not just by its own insulating jacket but also by the wall insulation itself. General piping recommendations and refrigerant line. In fact, most warranties require annual maintenance be conducted on the furnace in order for it to remain covered. Line sets consist of two semiflexible copper pipes to connect the outdoor air. Circuit breaker sizing on hksc10 and smaller heat kits goodman released the following bulletin, ggnot1494, regarding circuit breaker sizing on heat kits.
Suction line sizing the line sizing charts on each case specification sheet can be used to size the subfeed branch lines. Copper line sight glass moisture indicator 38 inch model. Refrigerant line accessory requirements depending on the location of the equipment within the building, there may be a need for optional components for the protection of the compressors and for. Now customize the name of a clipboard to store your clips. As the pace of refrigerant conversions increase, more contractors, unfamiliar with how to properly perform a refrigerant conversion, will find themselves getting involved. This revision will allow the supplier to program the motor instead of furnace plant, thus. Excessive liquid line pressure drops can cause the liquid refrigerant to flash, resulting in faulty expansion valve operation. Added line sizing inputs to the refrigerant line sizing output to install and run the program you will need.
Ceiling height, construction, window size and placement and dozens of other variables all need to be considered to properly size a heating andor cooling system. They are responsible for carrying the refrigerant between the. International journal of refrigeration sciencedirect. The tips for insulation both gas and liquid piping must be insulated. A discharge line trap plays an important function both during the compressor on and off cycles. Buy hvac line sets online copper line set fittings. Refrigeration line sizing tool includes data down to 38 line sizes where possible. Source code line count software for developers and project managers. Minimum line set size chart i have been losing bids recently because i will not run the new 410a unit on the existing under sized line set. Basic air conditioning piping recommendations liquid lines. Compare performance of multiple refrigerants learn the line sizing and many more all for free. As you may or may not know, most furnace manufacturers recommend that you get your furnace checked for problems at least once a year. These programs are tailored to increase productivity and accuracy, improve analysis capabilities and job documentation, and add a level of marketability to a designers estimates. Based on method used in ashrae refrigeration handbook.
Copper line insulation tube 78 x 12 x 6 ft box of 48. Hvac tools overview the elite software hvac tools program allows the quick calculation of common hvac design tasks. I dont do a job if the customer wants me to do any of it wrong. Horizontal suction lines should slope 12 per 10 toward the compressor to aid in good oil. During cycles, the trap collects oil to be entrained in the discharge gas. This free software is an intellectual property of saravel. Equivalent length must be used to determine acceptability of any long line set application. Since the refrigerant is in a gaseous state in the suction line, it does not mix well with the refrigerant oil.
Now available in english, german, spanish, portuguese and italian. 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. Split system refrigerant piping guide r410a refrigerant subject to change without notice. The chart below shows the line sizes that can be selected for each tonnage of unit and the maximum equivalent length and maximum rise of the line. This may be as small as 58 example service meat cases, or as large as 8 example multishelf ice cream cases. Be sure to double the component quantities shown above for these units.
Feet up to 25 50 75 100 125 150 175 200 up to 25 50 75 100 125 150 175 200 unit unit tons line size. Hvac system design software carrier commercial systems. I run all my line sets with out any joints except at condenser and coil all elbows are bent 95% of the time i can do this. There are two refrigeration circuits, each with a liquid line supplying liquid refrigerant from the condenser to a tx valve adjacent to the evaporator, and a suction line returning refrigerant gas from the evaporator to the suction connections of the compressor. Download refrigerant pipe sizing software for free. For variable capacity systems see section line sizing in detail. Fundamental to the design of hermetic compressors is a. Most refrigerant tubing kits are supplied with 38 thick insulation on the suction line. U k based white rose software specialises in the research and development of engineering design software for the refrigeration industry.
This long line set application guideline applies to all ahri listed r410a air conditioner and heat pump split. Saravel refrigerant pipe sizing free download windows. For split systems, interconnecting refrigerant lines should be sized to match the factory supplied fittings unless the application dictates different line sizes due to pressure drop. The suction line consists of lt15 m of straight tube with 8 long radius elbows while the discharge line consists of 15 m with 10 standard elbows. Refrigerant line sets can cause compressor failures achrnews. Hvac tools is a simple and easy to use windows programs designed for both engineers and contractors. A professionally conducted load calculation is the foundation of an effective system. When it comes to cars, trucks, and suvs, each varies in size, efficiency, comfort and.
Copper refrigerant lines play an essential role in air conditioning systems. I looked at goodman site and they recommend a larger suction line 1 18. For any residential split system installed with a long line set, 38 liquid line size must be used. The three primary issues that drive line sizing are velocity, pressure drop, and refrigerant charge. After my last post, i received this comment from bruce porter senior manager of field service for upg johnson controls and it really shows how.
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