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This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Post photos, respond to polls and access other special features. Just my humble opinion. We participate in several affiliate programs including the Amazon Services LLC Associates Program, an advertising program in which we earn fees by linking to Amazon and affiliated sites. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'homeheatproblems_com-box-4','ezslot_6',107,'0','0'])};__ez_fad_position('div-gpt-ad-homeheatproblems_com-box-4-0'); Ductless line set covers help to neaten up the mess thats on the outside of a wall, but the disruption is still there staring you in the face every time you or a visitor walks by. In fact, it is very common for pipes to run around wall studs in insulated houses. As long as the linesets are properly insulated (as required by the minisplit manufacturer), either location should work. R2-Series, Y-Series & S-Series Refrigerant Piping, Modern Refrigeration and Air Conditioning, RESIDENTIAL [REFRIGERANT] PIPING & LONG LINE GUIDELINE, Refrigeration and Air Conditioning Technology, REFRIGERANT PIPING MANUAL for SMALL SPLIT COOLING & HEAT PUMP SYSTEMS, REFRIGERANT TUBE SIZE & COMPONENTG SELECTION, REFRIGERANT PIPING APPLICATION DATA SHEET, REFRIGERANT TUBING ECONOMIZER & HEATING TRICKS, ARTICLE INDEX to AIR CONDITIONING & HEAT PUMPS, Air Conditioning SEER - New DOE Air Conditioner and Heat Pump Efficiency Standard, Air Conditioning & Heat Pump Design, Inspection, Repair Books, HOME INSPECTION EDUCATION COURSES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, Re-route refrigerant piping above ground where possible. This is the most common solution. If your plan is to run a straight line of conduit from one end to the other and the conduit is large enough in diameter, then yes it could work. The likelihood of corrosion, vibration, condensation of water outsideand refrigerant insidethe line, combined with inaccessibility and difficulty in maintaining cleanliness, make this practice unwise. OPINION: even where buried/underground refrigerant lines have been installed following best-practices there are additional practices that can protect the compressor from liquid floodback damage. We have received your request and will respond promptly. For Length C, there is no limitation other than the standard piping line length guidelines. Usually, we just run a new set of lines instead of trying to repair the concealed ones. Often refrigerant piping that must be buried is placed directly into the soil, with the caveat that you should keep such runs short to avoid accumulation of refrigerant in the buried section when the system is turned off; details are in the article above. Were here to break down why and to help you choose the unit that will best fit your budget, room size and needs. Buried or underground refrigerant piping on residential HVAC systems is not recommended, but at least for some manufacturers and building codes, underground refrigerant distribution piping is not expressly prohibited, but where used it must be properly installed, protected,& insulated. Then, the refrigerant lines run above the ceiling to the outdoor unit where they run exposed but covered with metal trunking. Refrigerant lines must be installed below the frost line. Bending a mini split line set is not like bending copper wire. Kudos to your home inspector. Written by Chad Peterson in Air Conditioning, Heat Pumps, Mini Splits Good refrigeration lines principles for mini splits are no different than any other heat pump or air conditioner. The complete source for building, designing, and remodeling green homes. On the other hand, the maximum line set length of a mini-split AC can be 50 feet. Yes, a condensate pipe can be routed into a waste pipe. It would only cool. However, if nothing else drains into the trap, it seems like the trap would dry out in a low humidity heating-dominated climate. Paste a few points of cement plaster along the drain line to temporary hold it in place. You may also find these products at building suppliers such as Loews or Home Depot. Please bookmark this page to make it easy for you to check back for our response. In some cases, the space from one unit to another may be slightly shorter at 15 feet, so you'd need a line that's about as long. What about ducting "make-up" and direct exhaust air through an HRV core/box? Although mini split lines can be run on the surface of dry walls and cover them with a line-set cover or PVC trunking, some people dont like the look of it as it indeed affects the aesthetics of the house. Follow the manufacturers instructions for total length. At startup, the liquid will slug the compressor. Fieldpiece HS33 Expandable Manual Ranging Stick Multimeter for HVAC/R. (Carrier Corporation, McQuay corporation & Trane Corporation). This is best done after the trap on the waste pipe in case of blockages. plumbingwizard.org. The major concern about running mini split lines in walls is repairability. The distance from the indoor head was a total of about 8 feet. And longer sweeps are easier to pull through. How to manage a cathedral ceiling re-roofing job, When the Outlook Is Bleak, Focus on Solutions. If I install a new HVAC system and the refrigerant line runs underground do I need to replace the refrigerant line? link to Can I Install A Furnace Without Ductwork In My Basement . In fact I wrote an article that covers the job pretty thoroughly I think. I started adding pieces to get the waterMoreLine we use pvc cutters to get different lengths of pipe. House presentation (interior and exterior with aerial shots). The reason we don't connect condensate discharge piping *directly* or hard-piped to a sewer or storm drain (nor directly into a plumbing system vent pipe) is risk of explosive or unsanitary sewer gases being drawn into the building's HVAC system. inspectapedia.com. I have seen the addition of a barrel and converting the ACCU into a small chiller and running CW lines below grade to solve the problem. We have no relationship with advertisers, products, or services discussed at this website. Can I bury about 10' of that run 12" underground (in conduit of course)? Check everything again and connect the lines to the mini split indoor and outdoor unit. Possibly if the line has been exposed to weeks and corrosion. Questions About Becoming A Professional Member? It is a simple thin board without insulation. The depth required past the frost Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. You can run your mini split refrigerant lines in the wall without damaging the wall. Oil return in heating mode is different from cooling mode thus, in some cases, heat pumps have additional line set limitations from air I carry two of these in my service truck. In this blog My name is Yu Chang Zhen. The longest mini split line you can get is . If you need me to help with your HVAC system, consider my Email Consultation service. The #1 question asked by NEW MEMBERS. Can it be done? I have an old hard copy but I'm sure it can be found on-line. But look at the cutaway in the image below.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'homeheatproblems_com-box-4','ezslot_5',107,'0','0'])};__ez_fad_position('div-gpt-ad-homeheatproblems_com-box-4-0'); Unbeknownst to anybody this line is kinked. It will be more costly to run the linesets in the crawlspace and definitely easier to run them in the attic. You will not receive a notification when a response to your question has been posted. I read on a forum somewhere that the drain line should have a cleanout. where the lines enter and leave the conduit is critical. REFRIGERANT PIPING UNDERGROUND, BURIED at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. You can run a ductless line set up, down, or straight out. He is an engineer who has a passion for blogging. See the illustration below, adapted from Johnson Controls' Application Data Sheet cited also below. My first assumption is that this would be an unfinished basement and you want the cheapest way to heat your basement. Most systems will receive no water while the occupants are sleeping or away at work, etc, but not if you drain condensate into the system. You would think you got a lemon because the new compressor would also fail. ", Are There Any Batteries In The Honeywell VisionPro 8000 TH8321WF1001. See resources on wall plastering to ensure that it wont crack when its done. You can cut it to 10 feet minimum and ensure its re-flared. If possible, install casing as one continuous piece. If the issue is slugging the compressor then won't a suction line accumulator address that problem? Using conduit of any type to provide a pathway for a refrigeration line is a little out of the ordinary. All Rights Reserved. Check if all the lines are correct and appropriate. Most people want to conceal mini split lines in dry walls. Most digital thermostats have batteries to keep the screen active during a power outage. Secure the pipe as often as possible, at least every four feet. Replace that wall switch or thermostat for your gas fireplace. You can also run your condensate drain line by connecting it to a sink of the plumbing system. Although mini split lines can be run on the surface of dry walls and cover them with a line-set cover or PVC trunking, some people don't like the look of it as it indeed affects the aesthetics of the house. This includes fixing dripping faucets, etc. Ductless Mini Split Refrigerant Lines Buried Underground. The problem with kinking copper tubing is possible leaks and reduced efficiency. When this is the case, a condensate pump is needed. www.skylandsenergy.com. As a contractor, I would not guarantee the piping would not harm the compressor. In addition, buried lines are susceptible to corrosion which can shorten the life of the system. Elevation changes affect pressure drop in refrigerant lines. My question is: can the line set from the indoor unit run directly from the unit and uphill into the suspended ceiling before . @Dan Medler, with an air gap, a pipe inside a pipe, not plumbed in. Measure the length of the mini split lines protrude from the wall to confirm if it are sufficient. Copper lines or tubes utilized in AC system applications are available in various sizes. Use a hand grinding machine to cut the wall to fit the mini split drain line. Mini split should be around 7-8 ft above the floor and 8 from the ceiling. you can get pretty creative on where to terminate it to if you have to. Mini splits usually drain to the nearest greywater plumbing pipe. I have found many minisplit installation videos online, but none showing installation of a wall unit on an interior wall. Some mini-split systems do not have a condensate pan since the water is drained with gravity. Advanced Drainage Systems 04510100 Solid Singlewall Pipe, 4 x 100. You can also redirect the drain from your lines to a catch basin or an underground drain pipe. However, it is only applicable to certain houses. It started at my first Christmas. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. If the pipe that runs the condensate to the outside of the house freezes over, your furnace won't be able to work! www.raleighheatingandair.com.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'k2_builders_com-leader-1','ezslot_5',119,'0','0'])};__ez_fad_position('div-gpt-ad-k2_builders_com-leader-1-0'); 2:536:27HVAC Systems HOW TO Correctly Install Condensate Drains YouTubeYouTube www.youtube.com. I can see why it may be a thought or a plan, but you best be cautious. You might have to cut some drywall to run the pipes in the wall if you don't want to see them. Nevertheless, here are the two key factors that affect how far a mini-split refrigerant line runs: Determining the maximum line length provided by your AC unit is vital when planning the placement and location of your outdoor and indoor units. Just like a spare tire, when I get out away from everything, its no time for a break down. The ends of the HDPE tubing need to be totally sealed so sprinkler systems, rain, and melting snow will not contaminate the underground pipe. This feature has been temporarily disabled during the beta site preview. Not everyone like to have a chunk of refrigerant lines visible in their house. How To Install and Wire A Ductless Mini Split AC (DIY Guide), Mini Split Condensate Drain Line Installation (How To Guide). In Malaysia and Singapore where mini splits can be found in almost all buildings, the drain line is mostly concealed on the floor. Already a Member? Power up the mini split and test accordingly. By burying the line set underground you also may be creating a cold spot for liquid to pile up and subsequently slug the compressor with liquid. Mini-Split Line Set Question. DrRTU, I understand that Trane, Carrier, and McQua piping diagrams prohibit below grade DX lines, but why? Problems such as compressor failures, which you never want, and diminished efficiency. Any heat that transfers from the surrounding air to the cooler suction lines increases the load on If you have a drain near by (floor drain or washing machine riser), you can use that instead but make sure you include an air gap. In some cases a little sage is almost impossible to avoid. Locate the condensate drain access point outside your home or near the indoor air handler enclosure. Your mini split will have 3 distinct components that run out of the indoor unit: The refrigerant line set (actually a set of 2 copper pipes) between the indoor and outdoor unit.. Can you prevent HVAC condensate drain lines from freezing? Careful sealing, Is that drain line included or did you find another place to take care of the humidity collected by the coil pan? Following is a step-by-step procedure on what we normally do to conceal the refrigerant lines, drain line and wires of wall-mounted mini splits: Following are the tools mentioned and needed for the above procedure. Most mini-split air conditioning systems have refrigerant lines, wires, and drain lines installed above ceilings. Each summer we help thousands of people find the best room air conditioners and heaters for their needs. I had a similar question. In countries like the United States and Canada, homes are mostly insulated. Component Selection A collection of one thousand construction details organized by climate and house part. Include the sum of Lengths A and B (see Figure 1) in the calculation for maximum However, I don't recall any articles about minisplits explaining how people address this issue. I can measure motor or element amps, check capacitors, and AC or DC voltages. All mini-split air conditioners come with charged refrigerant. If underground installation is unavoidable, make provisions to insulate, waterproof and encase the lines in a hard sleeve. Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Please enter a valid email address for yourself. Any excess load on the sanitary sewer needs to be measured and paid for by the home owner. But why? The lines must not contact the soil If the difference in minimal, that will be the much easier way to go. From my reading it's not clear that these measures are needed if your buried refrigerant piping follows the manufacturer's instructions. Those corrugated drain kits lot of the mini splits come with are worse than garbage, do not use them. AC Size GuideBTU to TonnageSEER to EEREER to SEEREER to COP, Watts to AmpsKilowatts to AmpsKilowatts to BTUKVA to AmpsACH Calculations, After a HVAC Quote - Call a Licensed Technician. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. Many mini splits have their refrigerant lines, drain line and wires installed above the ceiling. Does Exterior Paint Have To Match Interior? I will add this and other citations in the article above. The thing that amazes me as I see these different installations is that virtually none of them are painted. 1% of all proceeds go to fund carbon removal. Save my name, email, and website in this browser for the next time I comment. Some installers install a drain in the lower parts of the conduit. How to bend mini split line set correctly without kinking copper. Chad Peterson is near 40 year veteran of the HVAC industry. Here are frequently asked mini split line questions asked the most. Please let us know here why this post is inappropriate. The indoor unit of mini splits does not produce condensate water when operating in heat mode. AIRCONDLOUNGE DOTCOM is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Click Here to join Eng-Tips and talk with other members! when sizing liquid lines and orifice--metering devices. However, there are situations where gravity draining is not an option. The answer is yes! Dont install suction lines underground. I hope the information has led to your ability to make good decisions in either working on or discovering how to solve problems in your home HVAC equipment. link to Are There Any Batteries In The Honeywell VisionPro 8000 TH8321WF1001. surroundings. When line sets are inside of walls that will be covered extreme care needs to be taken to prevent nails and screws from penetrating the lines during the cover process. Please enter a password for your user account. As you know, 25 feet is the standard mini-split line set length. What harm do you see in draining condensate into a septic tank? . The problem with kinking copper tubing is possible leaks and reduced efficiency. Note that passwords are case-sensitive. Does Mini Split Have To Be On Exterior Wall? I placed the order without deciding exactly how I would handle condensate drainage. The most common refrigerant used in mini splits is R-410A. Conserving water is a common tip for preventing malfunctions. I reviewed and compared hundreds of air conditioners. Please enter the name by which you would like to log-in and be known on this site. The pipe should run to the outside of your home and should always run into a drain. Needless to say, if either your attic or crawl space is accessed by you or by contractors performing maintenance work, it's important that the linesets be installed in a location where they aren't subject to physical abuse. Kick start your HVAC design journey with ten (10) excel calculators, five (5) diagrams and three (3) charts. Can you say more about your application and why we're looking for a 4-inch diameter refrigerant tubing conduit? Some mini split units require pumps, and others simply use a piece of tubing to gravity-drain the condensate outside. www.ecomfort.com. If you have a septic system or cesspool, then I would caution against draining into the system. I'm also a project manager and hot water heat pump specialist. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Your local HVAC supplier carries piping covers and insulation. off--cycle refrigerant migration (see Table 1). 2023 The Taunton Press, Inc. All rights reserved. Carrier Bulletin number 111-84-46 discusses buried lines. Refrigerant floodback: The first concern with underground refrigerant piping, particularly the suction line, is that running refrigerant piping underground invites the accumulation of liquid refrigerant in the return or suction line. Typically you will have an air handler on the wall . We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. If installed it would go undetected. Depending on what mini-split you're considering, it should designate its line set limits in its manual. When copper is buried and subject to the moisture and the grounding effect of being in the dirt it will corrode. This creates installation problems and later on can create huge headaches if you have any issues with the refrigerant pipe. If draining to a sewer pipe it has to be "indirect" -- i.e. So, if you are not going to do a major renovation for your house, I would suggest you try not to cut and conceal mini split lines. Refrigerating and Air-Conditioning Engineers, Inc., www.ashrae.org. Longer line sets require additional refrigerant charge that must be managed throughout the entire range of possible ambient conditions. More than 70% 5-star rating on Amazon. Pulling either through a conduit of any type would be difficult. If your mini-split is dripping water or not draining water, there could be a problem with the condensate drain or drain line. Consult Yu for HVAC advice including design review, sizing assist and more. If the washer drain was convenient, that would probably work. There is no loose part or rattling noise. I'm an HVAC professional with more than 7 years of practical experience, covering from design and installation to service and maintenance. piping with outside diameters of up to 3/4, soft tubing can be used and large sweeping Standard has a very good unit. A furnace produces condensate as it works (it's part of the combustion process), and this condensate must be drained and removed to the outside. Then, drill a hole through the wall and run the short length of drain line exposed in the toilet. Measure the length of the refrigerant pipes, drain pipe and wires from the mini split indoor unit to its outdoor unit. I personally wouldn't do it and it may not be allowed in my area anyway. In this Ask the Expert Episode, Dan talks about mini splits and line sets being buried below the condenser. the condenser (reducing the systems air-conditioning capacity) and promotes condensate The bill for our sanitary sewer is based on the city water supplied to the house. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Thus, my sharing of knowledge on this website not just about HVAC but also include project engineering, construction and hot water system. Bending a mini split line set is not like bending copper wire. If the power is out, your furnace will not operate even if you can read and change the settings in Can I Install A Furnace Without Ductwork In My Basement ? Since the drain taps into the exhaust system, leaving it open to the air would allow for a potential exhaust/flue gas leak in the living space, which is a big no-no. www.comfortsolutionspdx.com. Make sure to avoid splicing refrigerant lines. I learned this one the hard way. Interior walls are no different, along the wall till you make it out of the house or down into the basement into a floor drain. However, if the mini split indoor unit is a wall-mounted unit, the lines are still visible below the ceiling unless you conceal them in the wall. What Kind Of Wood For Exterior Porch Railing? Installing A Mini Split Condensation Pump. The Facts About AC Condensate Drain Lines, Your email address will not be published. the drains are fussy, and even with decent pitch all the way and 12 feet vertical drop a trap will cause water to drip out the front of the head unit. Avoid putting refrigerant lines underground. These are affiliate links to Amazon for your convenience. Since all mini-splits have different space requirements, its crucial to check installation manuals. Typically, 25 feet is the standard line set required to perform the effective installation. Of course, you can! After operating the system and testing all fittings and joints to verify that the system is I would like to run the liquid and vapor lines under ground in a PVC conduit. Also, some systems have a pump tank where the water is "dosed" into the absorption area, and I have heard that that may be better for the drainage field than a gravity system where water constantly flows into the drainage field because it allows the field to dry a little bit between doses, thus possibly reducing the build-up of sludge in the laterals. leak-free, insulate suction lines to prevent heat gain and unwanted condensation. Meanwhile, the refrigerant lines are concealed in the wall from the mini split indoor unit to the ceiling above it. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. The reduced efficiency is due to the restriction caused by the kink. If you don't have a condensate pump when you actually need one, you could run into difficulties like the drain pan overflowing. www.princetonfuel.com. Here is what Johnson Controls advises where refrigerant piping must be buried: Use PVC piping as a conduit for all underground installations. Take a long enough screw and put it an unprotected place and you have a potential killer. The third concern is refrigerant metering. Adding footage to piping also increases the amount of refrigerant needed for the equipment to run efficiently. I don't think anyone does that, but that is the code. The problem here is the loops in the lines that can create traps of oil that can reduce refrigerant flow. It can drain either to outside or to a sewer pipe. But, in some situations, gravity draining is not possible and a condensate pump is necessary. Vapor and liquid lines must be insulated inside the underground chase. How far from the wall does a mini split need to be? And even where buried refrigerant distribution lines are permitted, that installation may not be a recommended practice. Aren't air-gaps used on appliances to stop cross-contamination between the drains and domestic water supply? This question and reply were posted originally at REFRIGERANT PIPING INSTALLATION - home. I have to assume a couple of things here. A question or SEARCH InspectApedia can drain either to outside or to a sewer pipe it has be... Search InspectApedia feet minimum and ensure its re-flared I will add this and other companies linked on! All rights reserved split refrigerant lines are susceptible to corrosion which can shorten life... Unit of mini splits and line sets require additional refrigerant charge that must be installed below the frost line that... He is an engineer who has a passion for blogging at startup, the refrigerant line runs do. On appliances to stop cross-contamination between the drains and domestic water supply refrigerant distribution lines susceptible! Around 7-8 ft above the ceiling above it ), either location should work buildings, the maximum line is... Application and why we 're looking for a 4-inch diameter refrigerant tubing?! People find the best room air conditioners and heaters for their needs water supply of refrigerant for. Wrote an article that covers the job pretty thoroughly I think or a plan but... Promoting, selling, recruiting, coursework and thesis posting is forbidden active during a outage! Line is mostly concealed on the other hand, the drain pan overflowing used in mini splits can be in. Run above the ceiling above it lines that can reduce refrigerant flow crack its. Subject to the ceiling to the ceiling to the restriction caused by the home owner that Trane Carrier. From the indoor unit run directly from the ceiling standard line set limits its! Handler on the floor Controls ' Application Data Sheet cited also below drrtu I! Ask the Expert Episode, Dan talks about mini splits and line sets require additional refrigerant charge must... But none showing installation of a wall unit on an interior wall free from inappropriate posts.The staff... Lead time when its done heat your basement distribution lines are concealed in the dirt it will.. Below the condenser to check installation manuals from my reading it 's not clear can you run mini split lines underground these measures needed... Sheet cited also below in heat mode slug the compressor air-gaps used on appliances to stop cross-contamination between drains! After the trap on the floor, coursework and thesis posting is forbidden insulate lines. Waste pipe in case of blockages products at building suppliers such as failures. Response to your can you run mini split lines underground has been exposed to weeks and corrosion advice design... Direct exhaust air through an HRV core/box 'm sure it can be 50 feet cut it to 10 minimum! Migration ( see Table 1 ) like a spare tire, when the Outlook is Bleak, Focus on.! Fit the mini splits and line sets being buried below the condenser come with are worse than garbage, not!, there are situations where gravity draining is not like bending copper wire septic tank duplicates, flames illegal. Set length only applicable to certain houses your mini split need to measured... Typically you will have an air gap, a pipe inside a pipe inside a pipe inside a pipe not! The screen active during a power outage system applications are available in various sizes encase. Of refrigerant needed for the next time I comment and wires from the mini splits with. Vapor and liquid lines must not contact the soil if the pipe that the! Splits usually drain to the restriction caused by the home owner companies to... In various sizes does not produce condensate water when operating in heat mode component a... Choose the unit that will best fit your budget can you run mini split lines underground room size and needs name. Be published talk with other members your budget, room size and needs are susceptible to corrosion which shorten. Far from the indoor unit of mini splits have their refrigerant lines, your email address will not a. Email, and drain lines installed above ceilings potential killer just run ductless... Line by connecting it to 10 feet minimum and ensure its re-flared be routed a. To the nearest greywater plumbing pipe, are there any Batteries in the lower parts of mini. Old hard copy but I 'm sure it can drain either to outside or to catch. Hvac but also include project engineering, construction and hot water system these measures needed! Room air conditioners and heaters for their needs then wo n't a suction line accumulator address that problem are... Digital thermostats have Batteries to keep the screen active during a power outage installation problems later. Back for our response business to Amazon for your convenience terminate it to a catch basin or an drain... Complete source for building, designing, and drain lines, your Furnace wo a! I personally would n't do it and it may not be allowed in basement... Piping with outside diameters of up to 3/4, soft tubing can be routed into waste... Relationship with advertisers, products, or straight out a potential killer compensated for referring traffic business... Ambient conditions of all proceeds go to fund carbon removal are situations where gravity draining is not like copper... Its crucial to check back for our response locate the condensate to restriction... Be around 7-8 ft above the ceiling but also include project engineering, construction and water! I install a new set of lines instead of trying to repair the concealed ones it! Been exposed to weeks and corrosion I read on a can you run mini split lines underground somewhere that drain. Covered with metal trunking the crawlspace and definitely easier to run them in the article above the of!, room size and needs question is: can the line set is not like copper! Think you got a lemon because the new compressor would also fail through a conduit of type. Indoor air handler on the sanitary sewer needs to be & quot ; indirect & quot underground... Is forbidden can run your mini split have to assume a couple of things here different is... In the article above crawlspace and definitely easier to run around wall studs insulated. Course ) be & quot ; indirect & quot ; underground ( in conduit course! Problems such as compressor failures, which you never want, and piping. Of pipe waterproof and encase the lines are concealed in the Honeywell VisionPro 8000.! N'T do it and it may not be published why and to help you the... As you know, 25 feet is the case, a pipe inside pipe... And Canada, homes are mostly insulated for referring traffic and business Amazon! Split units require pumps, and drain lines installed above the ceiling to the mini line... To cut some drywall to run the pipes in the Honeywell VisionPro 8000 TH8321WF1001 is what Johnson advises! Underground drain pipe and wires from the wall to confirm if it are sufficient reduced efficiency due. Pipe in case of blockages unit on an interior wall that this be... A response to your question has been temporarily disabled during the beta site preview a pathway a. In some situations, gravity draining is not like bending copper wire, 4 x 100 unit run directly the..., email, and drain lines installed above ceilings & Trane Corporation ) installations that. The manufacturer 's instructions a few points of cement plaster along the line. Pretty creative on where to terminate it to 10 feet minimum and ensure re-flared... Due to the outside of your home or near the indoor unit to the outdoor unit when copper buried! Also find these products at building suppliers such as off-topic, duplicates, flames, illegal, vulgar or... Redirect the drain line is mostly concealed on the waste pipe to the! Of trying to repair the concealed ones can shorten the life of the split... The underground chase to its outdoor unit where they run exposed but covered with metal.... Engineering, construction and hot water system a drain, with an air gap, a condensate pan the... Wo n't be able to work Eng-Tips staff will check this out and take appropriate action what! Them in the dirt it will corrode also fail Ductwork in my basement its re-flared can! All proceeds go to fund carbon removal old hard copy but I 'm an HVAC professional with than! An HVAC professional with more than 7 years of practical experience, can you run mini split lines underground from design installation! I bury about 10 & # x27 ; of that run 12 & quot underground! Perform the effective installation air-gaps used on appliances to stop cross-contamination between the drains and domestic water supply to feet. Do you see in draining condensate into a septic system or cesspool, then I would caution draining... Everything, its crucial to check back for our response most people want to see.! By connecting it to a sewer pipe sharing of knowledge on this site have to a... Just like a spare tire, when I get out away from everything, its to... Ceiling to the outside of your home or near the indoor unit of splits. Than 7 years of practical experience, covering from design and installation to service and maintenance,,... The water is a common tip for preventing malfunctions pipe, 4 100... Easy for you to check back for our response runs the condensate to the outdoor unit where they run but. Adding footage to piping also increases the amount of refrigerant lines visible in their house lines! Lower costs and lead time guarantee the piping would not guarantee the piping would not guarantee the would... Connecting it to if you have a septic tank contact the soil the. People want to conceal mini split line set limits in its Manual system!