Avoid heat gains or losses. Crimping the insulation along its refrigerant tubing pathway creates points of less and possibly inadequate insulation. A good example would be when running liquid refrigerant line through the attic area where temperature often exceed 110°F. 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. 21 COPPER PIPE- BLUE STRIPE • Hard drawn •A Le TRpCy seamless tubing todetard•Dyhe remove moisture • Factory Sealed •Plugs. See Chapters 23, 25, 26, and 27 in the 2017 ASHRAE Handbook--Fundamentals for information about insulation … Installers need to be sure that they meet the VRF manufacturers recommended temperature rating for the insulation their installing. It does not deal with HVAC systems or applications such as chilled-water systems. That word sends shivers down the spine of owners and contractors, as it awakens the hungry lawyers. Armacell recommends that you coat their exterior insulation with 2 coats of WB Finish and re-coat every 2-4 years. The biggest impact is for the High Pressure Vapor side of the requirements. Aluminum insulation jacketing is made out of .016" smooth aluminum that comes in 3 foot sections. Sensors / Cameras / Licenses / Accessories. The original, elastomeric foam pipe insulation for refrigeration, HVAC and plumbing. Click below to go to the Master List of all commercial resources. Product Advantages . Avoid property damage from condensation. SSL II® with ASJ Max Fiberglas™ Pipe Insulation. Prevent mold growth from occurring on construction materials. What could possibly be such a big deal with plain old boring refrigerant piping insulation? No companies have listed products specifically related to this chapter's topic. 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. 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 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. The peak normal operating temperatures are what dictate insulation thickness in accordance with current state energy codes and/or ASHRAE 90.1. Insulation thickness, insulation type … Why do we Insulate Refrigerant Piping? Refrigeration applications encompass a variety of operating temperatures, piping materials, space and environmental conditions, refrigerants and fluids – all of which impact insulation selection. 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. The insulation is coming apart at the seams and joints due to poor application, and the improper insulation usage for an exterior application. Please enter a valid email address 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 pipe clamps were incorrectly attached directly to the pipes. 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. 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 . refrigerant piping). Your risk increases as your quality of installation varies from the manufactures recommendation, and as you deviate from the code requirements. 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 NPS. Carefully selected piping insulation is critical to the efficiency of a refrigeration system. 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. Its imperative that they install the correct insulation, with the correct thickness, and one that meets the temperature rating and exterior protection requirements. REFRIGERATION PIPING Successful Installation of a Refrigeration System is Dependent Upon: 1. 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. Those VRF manufactures that have High Pressure Vapor operating temperature above 200 F would require 2-1/2” of insulation. Many of the VRF/VRV manufactures have listed temperatures well above the operating temperatures of your normal VRF system. 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. 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. 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. 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 document describes what is the purpose of Refrigerant Piping Insulation? 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 - … In piping 1 in. 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. Refrigerant Piping Insulation - Armacell Class 1 AccoFlex ® W Accoflex ® W. It is a closed-cell thermal insulation material with enhanced fire property. Various plumbing insulation and insulation covers reduce heat loss from pipes, and they’re suitable for air conditioners because of the absorbent foam material. Use pipe saddles and shields to avoid crushing insulation. For many of the steam heating distribution pipes in buildings, with an operating temperature greater than 350°F, 5 in. How many owners or management companies do you know that re-coat their insulation every 2 to 4 years? Cold Line is insulated to prevent any air leakage into the insulation that can cause condensation of moisture in the pipe. Valves, piping that must be inspected for CUI (Corrosion Under Insulation) and other components must be insulated properly. 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. It can typically be found on piping between the evaporator, the compressor, accompanying vessels and auxiliary equipment. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Outdoor insulation should have UV and weather protection. Install pipe insulation in the household to prevent water from freezing, and it’s also an energy-efficient addition to piping systems. Insulation performs a vital role in limiting heat gains in an industrial refrigeration system, ensuring that the compressor load does not become excessive. GREENGUARD Gold Certified. 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