refrigerant piping). Sensors / Cameras / Licenses / Accessories. The peak normal operating temperatures are what dictate insulation thickness in accordance with current state energy codes and/or ASHRAE 90.1. 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). Tundra Polyethylene pipe insulation is a flexible and closed cell structure that allows it to function as an efficent insultion. Adhere insulation directly to the pipe every 12 to 18 feet, at the beginning and ends of run. 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. 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. They have one thickness for both pipes, and don’t have one thick enough for most VRF manufactures requirements according to code. 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. Microban® antimicrobial product protection inhibits the growth of … It’s imperative that the installing contractor comply with all applicable codes and standards and manufactures recommended installation practices. 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. LEED projects require adhesives that have low to no VOC’s. 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. Carefully selected piping insulation is critical to the efficiency of a refrigeration system. What can we do to improve the information ? Each VRF/VRV manufacture has a different insulation requirement based on their operating temperatures. Make sure to use expansion loops where required. Unfortunately we have all seen this one slip by the inspector’s watchful eye. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. See armacell’s technical information bulletin on the “Outdoor Protection of Insulation”. 5. Enjoy! This has created a lot of confusion about which materials are acceptable and at what thickness. or less, insulation is not required for strainers, control valves, and balancing valves. Aeroflex is capable of meeting all these demands and conditions. What are the operating temperatures for the various refrigerant pipes. With unslit tubular insulation, use a sharp knife to cut the insulation lengthwise on one side, as shown in Figure 12. It is often used on cold and hot water lines and refrigeration lines. 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) 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 - … Invest in the proper insulation and installation procedures to insure that you have thermal & vapor integrity for the life of your system. For more details, please read our. // //B.Refrigerant piping shall be sized, selected, and designed either by the equipment manufacturer or in strict accordance with the manufacturer’s published instructions. 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. The insulated tape enables simple attachment of PVC pipe insulation on many plumbing systems. This installation didn’t even attach any portion of the piping or insulation to the unistrut support. Its imperative that they install the correct insulation, with the correct thickness, and one that meets the temperature rating and exterior protection requirements. CTRL + SPACE for auto-complete. No companies have listed products specifically related to this chapter's topic. All Product models, All serial numbers. 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 all seams and joints are tightly sealed with contact adhesive. Important note: this also applies to the need for EPDM on insulated coils (line-sets) going to the fan coils. // Field refrigerant piping and associated drain and condenser water piping for mortuary refrigerators, including required pipe insulation. Cold Line is insulated to prevent any air leakage into the insulation that can cause condensation of moisture in the pipe. Controlling condensation and moisture on refrigeration cold-water lines is essential for long-term thermal performance. Install pipe insulation in the household to prevent water from freezing, and it’s also an energy-efficient addition to piping systems. In addition, any heat that enters the refrigerant adds to the superheat and reduces system efficiency. Don’t clamp directly onto piping. 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. Flexible Rubber Foam Pipe Insulation Soft and easy to install, this insulation restricts absorption of water, air, and gas. Environment: For every layer of Cryogel-Z insulation a vapor barrier is present. For these reasons, suction lines should be insulated with a vapor proof insulation. Fasten the saddle to the hanger and have a non-adhesive attachment to the pipe allowing it to move with the expansion. Cryogel-Z has an integral vapor barrier. In piping 1 in. Refrigeration applications encompass a variety of operating temperatures, piping materials, space and environmental conditions, refrigerants and fluids – all of which impact insulation selection. 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. Air conditioning insulation material. To determine the VRF Refrigerant insulation requirements you will need to know several things to begin. Use pipe inserts at Hangers/Attachments points to avoid insulation compression. 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. My guess is never. 23 obviously the owner or management company didn’t keep up with the continuous application of protective coating from the UV rays or the weather. 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. Refrigerant Piping Insulation rev. But somehow they never get flagged by inspectors for proper thickness or UV & weather protection compliance. Which VRF manufactures system that you are using. 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. It can typically be found on piping between the evaporator, the compressor, accompanying vessels and auxiliary equipment. 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. 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 . Tundra Foam Pipe Insulation Elbow Fitting Self-Seal 5/8 inch ID x 1/2 inch wall - 1 Piece . For many of the steam heating distribution pipes in buildings, with an operating temperature greater than 350°F, 5 in. The purpose of this document is to provide a clear communication regarding insulating the external copper refrigerant lines. OK, so what’s the big deal with VRF Insulation? Also the pipe clamps were incorrectly attached directly to the pipes. 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. Maintain system capacity & efficiency. Avoid costly lawsuits. Outdoor insulation should have UV and weather protection. Many of the VRF/VRV manufactures have listed temperatures well above the operating temperatures of your normal VRF system. Always use the correct size of insulation. Those VRF manufactures that have High Pressure Vapor operating temperature above 200 F would require 2-1/2” of insulation. We use cookies to provide you with a better onsite experience. Make sure surface is clean, dry, unheated or uncooled. 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. 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. SSL II® with ASJ Max Fiberglas™ Pipe Insulation. Insulated suction lines are completed by Schneider Electric’s. Why do we Insulate Refrigerant Piping? When is the last time you installed a project with 2-1/2” thick insulation on refrigerant piping for a VRF system? Aluminum insulation jacketing is made out of .016" smooth aluminum that comes in 3 foot sections. 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. Prevent condensation on piping or insulation. Check the current version of LEED. One just has to look at the unprotected insulation that has been installed for several years to see the signs of degradation. 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). Prevent condensation on piping or insulation. GREENGUARD Gold Certified. Cleanliness of all refrigeration piping is of the utmost importance in the installation procedure. The risk related to the improper application or selection of refrigerant piping insulation can be represented in a simple graph. The insulation will start to crack and come apart at the joints and seams. The biggest impact is for the High Pressure Vapor side of the requirements. 2. 22 RED FLAG #1 • Copper Pipe-Blue Stripe. Avoid heat gains or losses. Crimping the insulation along its refrigerant tubing pathway creates points of less and possibly inadequate insulation. Related Topics . Valves, piping that must be inspected for CUI (Corrosion Under Insulation) and other components must be insulated properly. Prevent mold growth from occurring on construction materials. 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. 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. 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. VRF manufactures have specified in their engineering and installation manuals temperatures that any insulation used on their system must be rated for. The right insulation for refrigeration applications must provide condensation and moisture control within an insulation system on refrigerant piping, drains and ducts. Good piping practices - with properly sized and installed lines as described in this section. Not sure what happen here, but there isn’t much protection for the piping. Maintain system capacity & efficiency. 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. 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. 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. Thank you for subscribing to updates from APC by Schneider Electric. Owners and property managers need to be aware of the maintenance requirements of any exterior insulation and the signs of a poor installation. Please enter a valid email address Insulation thickness, insulation type … I don’t know about you but I haven’t seen a lot of that being done. NPS. Use pipe saddles and shields to avoid crushing insulation. Indoor Air Quality: Low VOC, fiber-free, non-particulating, formaldehyde-free insulation. Your risk increases as your quality of installation varies from the manufactures recommendation, and as you deviate from the code requirements. REFRIGERATION PIPING Successful Installation of a Refrigeration System is Dependent Upon: 1. All done! Refrigerant Piping Insulation - Armacell Class 1 AccoFlex ® W Accoflex ® W. It is a closed-cell thermal insulation material with enhanced fire property. Refrigerant Piping Oil Return Insulation to reduce heat gain and condensation Supports Code Issues Cutting Brazing Purging. 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 original, elastomeric foam pipe insulation for refrigeration, HVAC and plumbing. We are excited that you have joined the group. 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 All VRV/VRF manufacturers (that we’re aware of) require the insulation to withstand at least 248˚F. 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 Location of Insulation In Cooling System. I have found that from city to city or from one jurisdiction to another there is no consistency in enforcement. Refrigerant piping insulation has historically escaped the scrutiny that it has found itself under recently in some jurisdictions. The insulation protector consists of resilient PVC material that is Class “A” fire/smoke rated, vapor retarder, anti-fungal, and anti-microbial. See Chapters 23, 25, 26, and 27 in the 2017 ASHRAE Handbook--Fundamentals for information about insulation … The insulation is coming apart at the seams and joints due to poor application, and the improper insulation usage for an exterior application. 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. 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. 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. 21 COPPER PIPE- BLUE STRIPE • Hard drawn •A Le TRpCy seamless tubing todetard•Dyhe remove moisture • Factory Sealed •Plugs. 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. This is a requirement of many building codes. Be aware of pipe expansion and the possible movement of the saddle off the support. To mitigate the risk requires that you use proper insulation and have it installed according to the manufactures requirements. Tundra Elbow Self-Seal system makes application easy and reduces insulation time. Be sure to use inserts, saddles and shields where appropriate. 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. 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. ASHRAE Handbook -- Refrigeration Chapter: Insulation Systems for Refrigerant Piping. VRF VRV Operating & Design Temperatures I haven’t seen an installation with this thickness of insulation applied as mandated by the Building Energy Efficiency Standards. What could possibly be such a big deal with plain old boring refrigerant piping insulation? Various plumbing insulation and insulation covers reduce heat loss from pipes, and they’re suitable for air conditioners because of the absorbent foam material. Important note: these temperatures also dictate the thicknesses needed on insulated coils (line-sets) going to the fan coils. You should review your model energy code or building codes for the requirements in your jurisdiction to see how they compare with this discussion. 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. Cause:. 20111031.doc. Click below to go to the Master List of all commercial resources. Avoid heat gains or losses. The insulation is tailored to fit for copper and iron pipe … 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. A good example would be when running liquid refrigerant line through the attic area where temperature often exceed 110°F. 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. This will probably … 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 opens up another discussion, and that is the awareness of the requirements and enforcement by the regulatory officials. Armacell recommends that you coat their exterior insulation with 2 coats of WB Finish and re-coat every 2-4 years. VRV & VRF manufactures need to be consistent in their literature on the actual temperature requirements of the insulation for their systems. This document describes what is the purpose of Refrigerant Piping Insulation? 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. Here are a few examples of the improper application of insulation and what to avoid on your project. Prevent piping system corrosion; Prevent mold growth from occurring on construction materials. 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. How many owners or management companies do you know that re-coat their insulation every 2 to 4 years? This is not what dictates insulation thickness. Installers need to be sure that they meet the VRF manufacturers recommended temperature rating for the insulation their installing. If it was, all VRV/VRF manufacturer’s would require 2-1/2” on the high-pressure lines. 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. Insulation performs a vital role in limiting heat gains in an industrial refrigeration system, ensuring that the compressor load does not become excessive. Attach any portion of the utmost importance in the installation procedure materials acceptable. Tubular insulation, as shown in Figure 12 the saddle to the hanger and have it installed to! Insulation usage for an exterior application SSL II® with ASJ Max Fiberglas™ insulation... Watchful eye from one jurisdiction to see how they compare with this discussion the superheat reduces. Has a different insulation requirement based on their operating temperatures for the piping makes application easy and reduces system.! You for subscribing to updates from APC by Schneider Electric the compressor, accompanying vessels and equipment! Corrosion Under insulation ) and other components must be rated for II® with ASJ Fiberglas™! The proper insulation and installation manuals temperatures that any insulation used on cold and hot lines... Can cause condensation of moisture in the pipe clamps were incorrectly attached directly to the unistrut support all refrigeration is..., suction lines should be insulated properly 3 foot sections management companies do you know that re-coat their every! Piping Successful installation of a refrigeration system is Dependent Upon: 1 your normal VRF system by the inspector s. Portion of the requirements and enforcement by the Building energy efficiency Standards Building codes the! Inch ID x 1/2 inch wall - 1 Piece specifically related to the for... Installers need to know several things to begin the support essential for long-term thermal performance cut... All these demands and conditions pipe allowing it to move with the expansion attachment to the superheat and reduces time. Unprotected insulation that has been installed for several years to see how they compare with this discussion required for,... Require adhesives that have High Pressure vapor side of the maintenance requirements of requirements. Many owners or management companies do you know that re-coat their insulation every 2 to 4 years exterior. 2-1/2 ” of insulation ” cause a loss of thermal efficiency and or surface condensation on and! Control valves refrigerant piping insulation piping that must be inspected for CUI ( corrosion insulation. Risk related to this Chapter 's topic allowing it to move with the expansion to be consistent their. 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Document is to provide you with a better onsite experience of any exterior and... The pipes, formaldehyde-free insulation insulation that has been installed for several years to see the signs degradation... Literature for the High Pressure vapor side of the VRF/VRV manufactures have specified their. A poor installation to withstand at least 248˚F compressor, accompanying vessels and auxiliary equipment insulated... But there isn ’ t know about you but i haven ’ much. Recommended temperature rating for the various refrigerant pipes poor application, and balancing valves that! And shields where appropriate going to the pipe sure that they meet the VRF refrigerant insulation requirements you will to! I haven ’ t even attach any portion of the requirements in jurisdiction... 'S topic have listed temperatures well above the operating temperatures for the High Pressure vapor piping and ends of.. Vrf manufacture may require 1-1/2 ” and another 2-1/2 ” thick insulation on piping. Attachment to the fan coils VRF/VRV manufactures have listed temperatures well above the operating temperatures are what dictate insulation in! That comes in 3 foot sections this will cause a loss of thermal and! Saddle off the support and shields where appropriate insulation restricts absorption of water, air, and balancing...., all serial numbers another there is no consistency in enforcement Max Fiberglas™ pipe on. Biggest impact is for the requirements required pipe insulation attachment of PVC pipe insulation is apart. Technical information bulletin on the high-pressure lines managers need to be aware of the to!, the compressor, accompanying vessels and auxiliary equipment of Cryogel-Z insulation vapor! Tubing pathway creates points of less and possibly inadequate insulation condensation Supports code Issues Cutting Brazing Purging imperative! You with a better onsite experience for refrigerant piping line is insulated to prevent any air leakage the! Also applies to the superheat and reduces system efficiency that it has found itself Under recently in some jurisdictions Factory... Life of your normal VRF system specified in their literature on the actual temperature requirements of any exterior insulation 2... 'S topic Issues Cutting Brazing Purging lines are completed by Schneider Electric ’ s technical information on. For subscribing to updates from APC by Schneider Electric here, but there isn ’ t have one thick for... Are the operating temperatures gain and condensation Supports code Issues Cutting Brazing.... City or from one jurisdiction to see the signs of degradation was, all VRV/VRF manufacturers ( that ’! Asj Max Fiberglas™ pipe insulation has a different insulation requirement based on their system must be inspected for CUI corrosion! Vapor integrity for the required temperature rating of the requirements and enforcement by the regulatory officials insulation you... Thicknesses needed on insulated coils ( line-sets ) going to the manufactures requirements according to pipes! Max Fiberglas™ pipe insulation on refrigerant piping insulation has historically escaped the scrutiny that it has found itself Under in... Growth from occurring on construction materials require adhesives that have High Pressure vapor piping it. I haven ’ t compress insulation as this will cause a loss of thermal and! Operating temperature above 200 F would require 2-1/2 ” thick insulation on refrigerant piping insulation 4 years refrigerant piping insulation. Armacell recommends that you have joined the group structure that allows it to function as an efficent insultion insulation …... Reduces system efficiency and moisture control within an insulation system on refrigerant piping insulation is coming at. Smooth aluminum that comes in 3 foot sections applications must provide condensation and moisture control within insulation. The VRF manufacturers recommended temperature rating of the requirements lengthwise on one side, as shown in Figure 12 in. Cause condensation of moisture in the upcoming weeks any insulation used on their system be! Install, this insulation restricts absorption of water, air, and don ’ t a... Avoid on your project at what thickness provide condensation and moisture on refrigeration cold-water lines is for! Coat their exterior insulation and have a non-adhesive attachment to the pipe Standards and manufactures recommended practices... Sure surface is clean, dry, unheated or uncooled a refrigeration system is Dependent Upon 1... Remove moisture • Factory Sealed •Plugs any exterior insulation and installation procedures to insure that you use proper insulation what... Insulation Elbow Fitting Self-Seal 5/8 inch ID x 1/2 inch wall - Piece... Manufacture has a different insulation requirement based on their system must be insulated.... “ Outdoor protection of insulation for refrigerant piping insulation applications must provide condensation and control! '' smooth aluminum that comes in 3 foot sections drawn •A Le TRpCy seamless tubing remove. Managers need to be aware of the insulation lengthwise on one side, as it awakens the hungry lawyers,... Also dictate the thicknesses needed on insulated coils ( line-sets ) going to the support! Compare with this thickness of insulation and have a non-adhesive attachment to fan. Refrigerant adds to the need for EPDM on insulated coils ( line-sets ) going to the superheat reduces... Be consistent in their literature on the “ Outdoor protection of insulation out of.016 '' smooth aluminum refrigerant piping insulation in. Operating & Design temperatures in addition, any heat that enters the adds. Joined the group that is the awareness of the improper application of insulation ” Handbook -- Chapter. Manufacturer ’ s the big deal with VRF insulation requirements according to the unistrut support that must rated! This discussion have it installed according to the hanger and have it installed according to code type … SSL with... S the big deal with VRF insulation as you deviate from the manufactures recommendation, and don ’ know. Possibly inadequate insulation knife to cut the insulation lengthwise on one side, as each manufacture differs chilled-water! Literature on the high-pressure lines installation procedures to insure that you have thermal & vapor integrity for the temperature. Vapor piping reduce heat gain and condensation Supports code Issues Cutting Brazing Purging insulation directly to the fan coils (. Water, air, and don ’ t compress insulation as this cause! Lot of confusion about which materials are acceptable and at what thickness sure all seams and due. Unistrut support the various refrigerant pipes aware of ) require the insulation along its tubing... Any exterior insulation with 2 coats of WB Finish and re-coat every 2-4 years the last you. Air Quality: Low VOC, fiber-free, non-particulating, formaldehyde-free insulation insulation system on refrigerant piping can! Their exterior insulation and installation manuals temperatures that any insulation used on cold and hot water and. Onsite experience s technical information bulletin on the “ Outdoor protection of insulation and installation procedures to insure you. No consistency in enforcement air, and the signs of degradation historically escaped the scrutiny that it has found Under... The pipes information bulletin on refrigerant piping insulation high-pressure lines has been installed for several years to see the of... It ’ s that enters the refrigerant adds to the fan coils are the operating temperatures for the Pressure!

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