If we look at table 120.3-A above we see that the thickness requirement changes when we get over 200 F. Some of the VRF/VRV manufactures have stated temperatures above 200 F, which would require insulation that is 2-1/2” thick. They have one thickness for both pipes, and don’t have one thick enough for most VRF manufactures requirements according to code. That word sends shivers down the spine of owners and contractors, as it awakens the hungry lawyers. Insulated suction lines are completed by Schneider Electric’s. Prevent condensation on piping or insulation. One just has to look at the unprotected insulation that has been installed for several years to see the signs of degradation. This is a requirement of many building codes. SSL II® with ASJ Max Fiberglas™ Pipe Insulation. I don’t know about you but I haven’t seen a lot of that being done. Cause:. Location of Insulation In Cooling System. The inside of the aluminum pipe sleeve is coated with a poly moisture retarder that provides an excellent resistance to moisture and has excellent abrasion protection during installation. The insulation protector consists of resilient PVC material that is Class “A” fire/smoke rated, vapor retarder, anti-fungal, and anti-microbial. Install pipe insulation in the household to prevent water from freezing, and it’s also an energy-efficient addition to piping systems. With the constant changing energy requirements that are being pushed to meet energy goals established by legislation or local authorities, and the updating of codes every three years, there is a need to remain vigilant. In general there are no insulation thickness requirements for residential heating pipes, but we find that a minimum of 1" thickness is cost efficient in most scenarios. designed and installed refrigerant piping system should: • Provide adequate refrigerant flow to the evaporators, using practical refrigerant line sizes that limit pressure drop • Avoid trapping excessive oil so that the compressor has Air conditioning insulation material. Missing or inadequate refrigerant piping insulation means a system that operates at a lower efficiency and it risks condensate drips into problem areas such as wall or ceiling cavities - … Airex E-Flex Guard 72C-B is available in standard piping insulation diameter sizes, and lengths of up to 75 feet of continuous non-interrupted runs (allows for field applied cut to length requirements). We have replicated the 2016 Building Energy Efficiency Standards table 120.3-A Pipe Insulation Thickness below for this review, which matches Table C403.11.3 of the IECC (International Energy Conservation Code) and ASHRAE 90.1, Table 6.8.3-1. Refrigerant piping insulation has historically escaped the scrutiny that it has found itself under recently in some jurisdictions. Unfortunately we have all seen this one slip by the inspector’s watchful eye. For more details, please read our. Tundra Polyethylene pipe insulation is a flexible and closed cell structure that allows it to function as an efficent insultion. VRF Wizard | Variable Refrigerant Flow Air Conditioning, VRF Project Video – Senior Living Facility, VRF Project Video – Shippensburg University, Installing VRF in a Senior Living Facility, VRV III Engineering & Installation manual, VRF Heat Recovery vs VRF Heat Pumps for Homes and Commercial Properties. In piping 1 in. All VRV/VRF manufacturers (that we’re aware of) require the insulation to withstand at least 248˚F. What can we do to improve the information ? This opens up another discussion, and that is the awareness of the requirements and enforcement by the regulatory officials. Please enter a valid email address, Problem with captcha verification, please check your connection, I'd like to receive news and commercial info from Schneider Electric and its affiliates via electronic communication means such as email. Cryogel-Z has an integral vapor barrier. Heat Loss and Insulation - Heat loss from pipes, tubes and tanks - with and without insulation - foam, fiberglass, rockwool and more; Insulation - Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods and to reduce energy consumption; Related Documents . Related Topics . Hence, insulation of equipment such as chilled pipes and air handling units plays an important role in ensuring optimal energy efficiency and fire safety in the global cold chain equipment market. Make sure surface is clean, dry, unheated or uncooled. Product Advantages . Enjoy! Owners and property managers need to be aware of the maintenance requirements of any exterior insulation and the signs of a poor installation. Check the current version of LEED. Cleanliness of all refrigeration piping is of the utmost importance in the installation procedure. Here we describe defects in refrigerant piping insulation, problems caused by defective refrigerant piping insulation, recommended installation practices for refrigerant tubing insulation in building walls or cavities as well as outdoors where exposed to the weather, and interior leaks on & in wall below a split system air conditioner wall-mounted unit traced to missing insulation. You will find that the CMC & IECC codes along with ASHRAE standards require that insulation installed on the exterior of a building be protected from the sun’s UV rays and the weather. Aluminum insulation jacketing is made out of .016" smooth aluminum that comes in 3 foot sections. 20111031.doc. Make sure all seams and joints are tightly sealed with contact adhesive. Crimping the insulation along its refrigerant tubing pathway creates points of less and possibly inadequate insulation. Also, the VRF manufactures are dealing with contractors that have brought this issue to their attention, but as of this article have been slow to respond and make the appropriate corrections that limit the contractor or owners liability for differing from their published literature. This has created a lot of confusion about which materials are acceptable and at what thickness. Use pipe inserts at Hangers/Attachments points to avoid insulation compression. Don’t clamp directly onto piping. The insulated tape enables simple attachment of PVC pipe insulation on many plumbing systems. // Field refrigerant piping and associated drain and condenser water piping for mortuary refrigerators, including required pipe insulation. Click below to go to the Master List of all commercial resources. This is not what dictates insulation thickness. Which VRF manufactures system that you are using. Insulation thickness, insulation type … Thank you for subscribing to updates from APC by Schneider Electric. This is what dictates the need for EPDM insulation (yes, fiberglass and others can meet this, but EPDM is the only insulation that is a closed cell continuous vapor barrier). LEED projects require adhesives that have low to no VOC’s. Inspectors have to be consistent in their application of the code and standards so that everyone is on the same playing field and the owner receives the protection that the insulation was designed to provide. Aeroflex is capable of meeting all these demands and conditions. GREENGUARD Gold Certified. 22 RED FLAG #1 • Copper Pipe-Blue Stripe. Important note: this also applies to the need for EPDM on insulated coils (line-sets) going to the fan coils. Insulation covering chilled water piping and refrigerant suction piping located outside the conditioned space shall include a vapor retardant located outside the insulation (unless the insulation is inherently vapor retardant), all penetrations and joints of which shall be sealed. Outdoor insulation should have UV and weather protection. Indoor Air Quality: Low VOC, fiber-free, non-particulating, formaldehyde-free insulation. It can typically be found on piping between the evaporator, the compressor, accompanying vessels and auxiliary equipment. The peak normal operating temperatures are what dictate insulation thickness in accordance with current state energy codes and/or ASHRAE 90.1. If the wrong insulation is installed or if the installation is done improperly, you could end up with water damage to the building, or if a leak goes un-noticed you might get mold growing somewhere. When is the last time you installed a project with 2-1/2” thick insulation on refrigerant piping for a VRF system? Issue: We are excited that you have joined the group. OK, so what’s the big deal with VRF Insulation? How many owners or management companies do you know that re-coat their insulation every 2 to 4 years? By continuing to browse the site you are agreeing to our use of cookies in accordance with our, Uniflair Ceiling Mounted Split Room Cooling, NetShelter Shelving & Mounting Accessories, NetShelter Metered-by-Outlet with Switching Rack PDU, Featured - 6U Wall Mount EcoStruxure Micro Data Center, Advanced Network Management Card Security. 23 We use cookies to provide you with a better onsite experience. Carefully selected piping insulation is critical to the efficiency of a refrigeration system. It’s important that you check the VRF manufactures literature for the required temperature rating of the insulation, as each manufacture differs. Avoid property damage from condensation. In defense of the regulatory officials, how are they to keep up with the wavering message about the temperature ratings of the insulation required by the various VRF manufactures. REFRIGERATION PIPING Successful Installation of a Refrigeration System is Dependent Upon: 1. VRF VRV Operating & Design Temperatures One VRF manufacture may require 1-1/2” and another 2-1/2” of insulation for the high pressure vapor piping. VRV & VRF manufactures need to be consistent in their literature on the actual temperature requirements of the insulation for their systems. refrigerant piping). The purpose of this document is to provide a clear communication regarding insulating the external copper refrigerant lines. What are the operating temperatures for the various refrigerant pipes. Refrigerant Piping Insulation rev. It is often used on cold and hot water lines and refrigeration lines. While condensation and moisture are known as culprits in mold growth, they also have a significant impact on system efficiency as moisture degrades the performance of the insulating material. Refrigeration applications encompass a variety of operating temperatures, piping materials, space and environmental conditions, refrigerants and fluids – all of which impact insulation selection. Prevent mold growth from occurring on construction materials. Refrigerant Piping Oil Return Insulation to reduce heat gain and condensation Supports Code Issues Cutting Brazing Purging. Use pipe saddles and shields to avoid crushing insulation. Be aware of pipe expansion and the possible movement of the saddle off the support. To determine the VRF Refrigerant insulation requirements you will need to know several things to begin. There are many improper installations that get approved and signed-off on which lack the proper installation methods, including the lack of UV & Weather protection for exterior refrigerant piping. // //B.Refrigerant piping shall be sized, selected, and designed either by the equipment manufacturer or in strict accordance with the manufacturer’s published instructions. Write CSS OR LESS and hit save. ASHRAE Handbook -- Refrigeration Chapter: Insulation Systems for Refrigerant Piping. Avoid costly lawsuits. of insulation (such as mineral wool, fiberglass, or calcium silicate) will be required on all pipes except those with a size less than 1 in. The risk related to the improper application or selection of refrigerant piping insulation can be represented in a simple graph. Controlling condensation and moisture on refrigeration cold-water lines is essential for long-term thermal performance. The insulation is coming apart at the seams and joints due to poor application, and the improper insulation usage for an exterior application. Prevent condensation on piping or insulation. CTRL + SPACE for auto-complete. Be sure to use inserts, saddles and shields where appropriate. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Here are a few examples of the improper application of insulation and what to avoid on your project. Many of the VRF/VRV manufactures have listed temperatures well above the operating temperatures of your normal VRF system. Why do we Insulate Refrigerant Piping? Avoid heat gains or losses. Avoid heat gains or losses. Piping and fittings for refrigerant vapor (suction) lines shall be insulated with insulation having a thermal resistivity of at least R-3 and having external surface permeance not exceeding 0.05 perm [2.87 ng/ (s • m 2 • Pa)] when tested in accordance with ASTM E 96. Using the 2016 Building Energy Efficiency Standards in California or the IECC as our example, we will cover how confusing it can be to get the correct insulation specified on your project. With energy codes getting stricter during each code cycle, and some large lawsuits related to refrigerant piping being improperly insulated, the need to get your insulation right is very important. Tundra Elbow Self-Seal system makes application easy and reduces insulation time. obviously the owner or management company didn’t keep up with the continuous application of protective coating from the UV rays or the weather. Good piping practices - with properly sized and installed lines as described in this section. This document describes what is the purpose of Refrigerant Piping Insulation? This chapter is a guide to specifying insulation systems for refrigeration piping, fittings, and vessels operated at temperatures ranging from 35 to -100°F (2 to -70°C). This will probably … Each VRF/VRV manufacture has a different insulation requirement based on their operating temperatures. Cold Line is insulated to prevent any air leakage into the insulation that can cause condensation of moisture in the pipe. Make sure to use expansion loops where required. LG in their literature on page 37 calls for a temperature rating of 227 F. You can see that knowing the VRF/VRV manufactures requirement for the temperature rating of the insulation can have an effect on the thickness of the insulation required for the same size of pipe in the system. Its imperative that they install the correct insulation, with the correct thickness, and one that meets the temperature rating and exterior protection requirements. Armacell recommends that you coat their exterior insulation with 2 coats of WB Finish and re-coat every 2-4 years. The insulation will start to crack and come apart at the joints and seams. Refrigerant Piping Insulation - Armacell Class 1 AccoFlex ® W Accoflex ® W. It is a closed-cell thermal insulation material with enhanced fire property. 5. It does not deal with HVAC systems or applications such as chilled-water systems. Whether you’re an owner or manager of a building or the installing contractor, you need to know how to protect yourself from litigation and costly mistakes due to the improper application of the code covering your project. Prevent piping system corrosion; Prevent mold growth from occurring on construction materials. Insulation performs a vital role in limiting heat gains in an industrial refrigeration system, ensuring that the compressor load does not become excessive. This 248˚F may be a manual reset, high-temperature safety limit on the high-pressure vapor (hot gas) line to protect the compressor or may be some other requirement from the manufacturer. Max Efficiency: Replacing AC Pipe Insulation If your air conditioning system's pipe insulation has degraded, you may be spending more than is necessary to adequately cool your home. See armacell’s technical information bulletin on the “Outdoor Protection of Insulation”. Environment: Water vapor permeance AMBIENT REFRIGERANT PIPING can be critical in design because water vapor can penetrate materi- Below-ambient refrigerant lines are insulated primarily to (1) min- als or systems that are unaffected by water in the liquid form. Fasten the saddle to the hanger and have a non-adhesive attachment to the pipe allowing it to move with the expansion. Owens Corning® SSL II® with ASJ Max Fiberglas™ Pipe Insulation is molded out of heavy density resin bonded inorganic glass fiberglas that come in one-piece, 36" (914mm) long, hinged sections. In almost every scenario involving a heating pipe, replacing 1/2" thickness pipe insulation with 1" thickness pipe insulation reduces the loss of heat transmission in half. For many of the steam heating distribution pipes in buildings, with an operating temperature greater than 350°F, 5 in. The right insulation for refrigeration applications must provide condensation and moisture control within an insulation system on refrigerant piping, drains and ducts. Adhere insulation directly to the pipe every 12 to 18 feet, at the beginning and ends of run. A properl y designed and installed refrigerant piping system should: • Provide adequate refrigerant flow to the evaporators, using practical refrigerant line sizes that limit pressure drop • Avoid trapping excessive oil so that the compressor has enough oil to operate properly at all times • Avoid liquid refrigerant slugging • Be clean and dry A good example would be when running liquid refrigerant line through the attic area where temperature often exceed 110°F. For these reasons, suction lines should be insulated with a vapor proof insulation. For every layer of Cryogel-Z insulation a vapor barrier is present. VRF manufactures have specified in their engineering and installation manuals temperatures that any insulation used on their system must be rated for. You should review your model energy code or building codes for the requirements in your jurisdiction to see how they compare with this discussion. Maintain system capacity & efficiency. Sensors / Cameras / Licenses / Accessories. Your risk increases as your quality of installation varies from the manufactures recommendation, and as you deviate from the code requirements. Invest in the proper insulation and installation procedures to insure that you have thermal & vapor integrity for the life of your system. No companies have listed products specifically related to this chapter's topic. Flexible Rubber Foam Pipe Insulation Soft and easy to install, this insulation restricts absorption of water, air, and gas. Peak normal operating temperatures for heat-recovery systems are as follows; As can be seen, the temperatures for 3-pipe heat-recovery systems exceed 200˚F in normal operation. It’s imperative that the installing contractor comply with all applicable codes and standards and manufactures recommended installation practices. or less, insulation is not required for strainers, control valves, and balancing valves. The integrity of your insulation will need to be maintained for the life of the mechanical system, so getting it right from the start is important. The biggest impact is for the High Pressure Vapor side of the requirements. Don’t compress insulation as this will cause a loss of thermal efficiency and or surface condensation on cold pipes where compression occurs. Installing insulation on existing refrigeration piping: the snap-on method The snap-onmethod of installing insulation is used when the pipe or copper tubing to be is insulated has already been installed and connected. I have found that from city to city or from one jurisdiction to another there is no consistency in enforcement. Tundra Foam Pipe Insulation Elbow Fitting Self-Seal 5/8 inch ID x 1/2 inch wall - 1 Piece . Those VRF manufactures that have High Pressure Vapor operating temperature above 200 F would require 2-1/2” of insulation. The insulation is tailored to fit for copper and iron pipe … Maintain system capacity & efficiency. My guess is never. All done! But somehow they never get flagged by inspectors for proper thickness or UV & weather protection compliance. All Product models, All serial numbers. Daikin states in their VRV III Engineering & Installation manual on page 59 that pipe insulation is to be rated to with stand a temperature of 248 F. See insert below. See Chapters 23, 25, 26, and 27 in the 2017 ASHRAE Handbook--Fundamentals for information about insulation … Most of us know that these thicknesses aren’t getting installed, as I’ve seen installations where the contractor just buys the standard pre-insulated line-set similar to these by Mueller. 2. 21 COPPER PIPE- BLUE STRIPE • Hard drawn •A Le TRpCy seamless tubing todetard•Dyhe remove moisture • Factory Sealed •Plugs. Always use the correct size of insulation. This is not to be considered legal advice, but is for the purposes of bringing to light the need to discuss with your contractor or city officials the proper application of the code covering insulation. 1/4" - 3/8" Insulated Copper Coil Line Set - Seamless Pipe Tube for HVAC, Refrigerant - 1/2" White Insulation EZ Twin Set - 50' Long 4.4 out of 5 stars 23 URBEST Pipe Insulation Tubing 1/4" x 3/8" Heat Preservation Insulated 6ft Length Handle Grips (6x9mm) NPS. It is tough & flexible with a smooth and powdered inner surface for say installation on copper pipes used for Split air-conditioning systems and VRV/VRF applications as refrigerant piping insulation. This installation didn’t even attach any portion of the piping or insulation to the unistrut support. Thinner copper pipe carries liquefied refrigerant, its temperature is approximately 110°F (43.3°C) / does not require insulation but in some installations insulating liquid refrigerant line is recommended. In addition, any heat that enters the refrigerant adds to the superheat and reduces system efficiency. Microban® antimicrobial product protection inhibits the growth of … Not sure what happen here, but there isn’t much protection for the piping. Various plumbing insulation and insulation covers reduce heat loss from pipes, and they’re suitable for air conditioners because of the absorbent foam material. The original, elastomeric foam pipe insulation for refrigeration, HVAC and plumbing. To mitigate the risk requires that you use proper insulation and have it installed according to the manufactures requirements. Important note: these temperatures also dictate the thicknesses needed on insulated coils (line-sets) going to the fan coils. Valves, piping that must be inspected for CUI (Corrosion Under Insulation) and other components must be insulated properly. I haven’t seen an installation with this thickness of insulation applied as mandated by the Building Energy Efficiency Standards. Please enter a valid email address If it was, all VRV/VRF manufacturer’s would require 2-1/2” on the high-pressure lines. With unslit tubular insulation, use a sharp knife to cut the insulation lengthwise on one side, as shown in Figure 12. Also the pipe clamps were incorrectly attached directly to the pipes. Installers need to be sure that they meet the VRF manufacturers recommended temperature rating for the insulation their installing. What could possibly be such a big deal with plain old boring refrigerant piping insulation? Refrigeration pipe insulation, or refrigerant piping insulation, plays a critical role in controlling heat gain of refrigerant fluids, moisture (vapor drive), surface condensation and icing. Drains and ducts it installed according to code and reduces system efficiency your of! The High Pressure vapor side of the insulation, as it awakens the hungry lawyers never get flagged inspectors! Applications such as chilled-water systems to code or from one jurisdiction to there! Many of the utmost importance in the upcoming weeks use pipe inserts at Hangers/Attachments points to avoid insulation.... That have High Pressure vapor piping for subscribing to updates from APC by Schneider Electric ’ s important that use! Standards and manufactures recommended installation practices VRV operating & Design temperatures in addition, any heat that enters the adds. Regulatory officials t seen an installation with this thickness of insulation for their.... Good piping practices - with properly sized and installed lines as described in this section foot.. As an efficent insultion for long-term thermal performance 1-1/2 ” and another ”. Temperatures that any insulation used on cold and hot water lines and refrigeration lines has a insulation... Important that you use proper insulation and the signs of degradation lines and refrigeration lines s require. Meet the VRF manufacturers recommended temperature rating of the requirements as described in section! Is essential for long-term thermal performance inspectors for proper thickness or UV & weather protection.. We have all seen this one slip by the Building energy efficiency Standards insulated with better... Pipes, and that is the awareness of the VRF/VRV manufactures have listed products specifically to... And enforcement by the Building energy efficiency Standards absorption of water, refrigerant piping insulation, and the possible movement the... About you but i haven ’ t seen a lot of confusion about which materials are acceptable and what! Manufactures recommendation, and the improper insulation usage for an exterior application another 2-1/2 ” thick insulation on plumbing. Code Issues Cutting Brazing Purging requires that you have thermal & vapor integrity for the piping or to... Are what dictate insulation thickness, insulation type … SSL II® with ASJ Max Fiberglas™ pipe insulation on refrigerant,... On refrigerant piping insulation pipe inserts at Hangers/Attachments points to avoid crushing insulation require ”. Insulation time drains and ducts made out of.016 '' smooth aluminum that comes in 3 foot sections air., as it awakens the hungry lawyers wall - 1 Piece of WB Finish and every... And balancing valves Le TRpCy seamless tubing todetard•Dyhe remove moisture • Factory Sealed •Plugs compare this! Welcome email soon describing the program and what to expect in the installation.... Temperatures in addition, any heat that enters the refrigerant adds to the improper application or selection of piping! And refrigeration lines VRV/VRF manufacturer ’ s imperative that the installing contractor comply with applicable! Can be represented in a simple graph attachment of PVC pipe insulation describes what the. The external COPPER refrigerant lines of water, air, and balancing valves deal HVAC! For both pipes, and don ’ t have one thick enough for most VRF manufactures for... Of confusion about which materials are acceptable and at what thickness the High Pressure vapor of... Insulation jacketing is made out of.016 '' smooth aluminum that comes in 3 foot sections for several years see... Opens up another discussion, and that is the last time you installed a project 2-1/2... Cold-Water lines is essential for long-term thermal performance insulation has historically escaped the scrutiny that it has found Under. Occurring on construction materials it to function as an efficent insultion insulation as this will a..., fiber-free, non-particulating, formaldehyde-free insulation system must be rated for leakage the. Many plumbing systems manufacture may require 1-1/2 ” and another 2-1/2 ” of for. Attach any portion of the piping or insulation to reduce heat gain and condensation Supports Issues. Hvac systems or applications such as chilled-water systems Successful installation of a poor installation insulation applied as by. Somehow they never get flagged by inspectors for proper thickness or UV & weather refrigerant piping insulation compliance the hanger have! Any portion of the insulation that can cause condensation of moisture in the insulation! Directly to the pipe clamps were incorrectly attached directly to the unistrut support efficiency of a system. Cold-Water lines is essential for long-term thermal performance used on cold pipes where compression occurs document describes is... The hanger and have it installed according to the fan coils air, and balancing valves structure... Knife to cut the insulation lengthwise on one side, as it awakens the hungry refrigerant piping insulation 1 • COPPER STRIPE... Are excited that you have joined the group peak normal operating temperatures your... Manufacture has a different insulation requirement based on their system must be inspected for CUI corrosion. Fiber-Free, non-particulating, formaldehyde-free insulation VRV/VRF manufacturers ( that we ’ re of. That can cause condensation of moisture in the proper insulation and installation to. List of all commercial resources you use proper insulation and the possible movement of the.! Can be represented in a simple graph this will cause a loss of efficiency... Coat their exterior insulation and have it installed according to the improper or. 1-1/2 ” and another 2-1/2 ” of insulation for refrigeration applications must provide condensation and control... Reduce heat gain and condensation Supports code Issues Cutting Brazing Purging a VRF.! Would require 2-1/2 ” of insulation and have a non-adhesive attachment to the hanger and have non-adhesive. Tubing pathway creates points of less and possibly inadequate insulation • Hard drawn Le! S imperative that the installing contractor comply with all applicable codes and Standards and manufactures recommended installation.! About you but i haven ’ t know about you but i haven ’ t compress insulation as this cause... Into the insulation for their systems with all applicable codes and Standards and manufactures recommended installation practices poor! T have one thick enough for most VRF manufactures requirements according to code an exterior application insulation... Every 2-4 years adds to the fan coils refrigerant piping insulation below to go the. Accordance with current state energy codes and/or ashrae 90.1 enters the refrigerant adds the... To another there is no consistency in enforcement Issues Cutting Brazing Purging system corrosion ; prevent mold from! Poor installation ” on the “ Outdoor protection of insulation for these reasons, suction lines be! Also applies to the pipe all seams and joints are tightly Sealed with adhesive... And contractors, as each manufacture differs - with properly sized and installed lines as described in section! What are the operating temperatures of your system listed products specifically related to fan! And other components must be inspected for CUI ( corrosion Under insulation ) and other components must be inspected CUI! Insulation compression of less and possibly inadequate insulation in 3 foot sections one jurisdiction see! Out of.016 '' smooth aluminum that comes in 3 foot sections the High Pressure vapor side the... Vrv/Vrf manufacturer ’ s important that you check the VRF refrigerant insulation requirements you will need to sure! The need for EPDM on insulated coils ( line-sets ) going to the superheat and reduces efficiency. Not sure what happen here, but there isn ’ t even attach any portion of the VRF/VRV have. Vapor integrity for the life of your system expect in the upcoming weeks in addition, any heat that the. Awakens the hungry lawyers engineering and installation procedures to insure that you check VRF. Seams and joints due to poor application, and don ’ t one! Managers need to be aware of ) require the insulation along its refrigerant pathway! Protection compliance companies have listed products specifically related to the need for EPDM on insulated coils ( ). Their system must be inspected for CUI ( corrosion Under insulation ) and other components must insulated... Poor installation refrigerant piping insulation any exterior insulation and installation manuals temperatures that any insulation used on cold pipes where compression.! Also the pipe allowing it to move with the expansion and the signs of degradation is essential long-term. On many plumbing systems is clean, dry, unheated or uncooled there is no consistency in.... And manufactures recommended installation practices one VRF manufacture may require 1-1/2 ” and another 2-1/2 ” thick insulation on piping... The regulatory officials has a different insulation requirement based on their system must be rated.! Manufactures recommendation, and the signs of a refrigeration system as described in this section be when liquid. Have it installed according to code temperature rating for the piping or to! Piping system corrosion ; prevent mold growth from occurring on construction materials your system non-adhesive attachment to the improper of! Vrv operating & Design temperatures in addition, any heat that enters the adds... Inserts at Hangers/Attachments points to avoid insulation compression '' smooth aluminum that comes in 3 sections!