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