Division 22 23 Ebook Page 259 Section 23 07 19 HVAC Piping Insulation-VaporWick® Pipe Insulation

HVAC PIPING INSULATION 23 07 19 - 4 HVAC Piping Insulation VaporWick Pipe Insulation 3.4 INSTALLATION A. Installation needs to be performed by an Owens Corning trained installer. General: Install insulation materials and accessories in accordance with Contract Documents and manufacturer's published instructions to ensure that it will serve its intended purpose. 1. Install insulation on piping subsequent to painting and acceptance tests. 2. Install insulation materials with smooth and even surfaces. Insulate each continuous run of piping with full-length units of insulation, with single cut piece to complete run. Do not use cut pieces or scraps abutting each other. Butt insulation joints firmly to ensure complete, tight fit over piping surfaces. B. Support piping so that the insulation is not compromised by the hanger or the effects of the hanger. Provide hanger spacing so that the circumferential joint may be made outside the hanger. Cover the evaporating holes with sealing tape for the length of the metal saddle. 1. Piping systems 3 in (75 mm) in diameter or less, insulated with fiberglass pipe insulation, may be supported by placing saddles of the proper length and spacing under the insulation. 2. For hot or cold piping systems larger than 3 in (75 mm) in diameter, operating at temperatures less than +200F (93C) and insulated with fiberglass, provide inserts such as foam or high-density fiberglass with sufficient compressive strength to support the weight of the piping system. 3. At vertical runs, provide insulation support rings, as indicated on Drawings. C. Fittings: 1. Wrap valves, fittings, and similar items in each piping system with wicking material to ensure a continuous path (100% coverage) for the removal of condensation, prior to installing insulation. 2. Cover valves, fittings, and similar items in each piping system using one of the following: a. Mitered sections of insulation equivalent in thickness and composition to that installed on straight pipe runs. b. PVC Fitting Covers insulated with material equal in thickness and composition to adjoining insulation. 3. Seal fitting joints with vapor retarder sealing tapes or mastics. 4. Use standard oversizing practices for valves and flanges. D. Penetrations: Extend piping insulation without interruption through walls, floors and similar piping penetrations, except where otherwise specified. E. Accessory Materials (Midwest): Install in conformance with the current edition of the Midwest Insulation Contractors Association (MICA) "Commercial & Industrial Insulation Standards." 3.5 FIELD QUALITY ASSURANCE A. Upon completion of insulation work, visually inspect the work and verify that it has been correctly installed. This may be done while work is in progress, to assure compliance with requirements herein to cover and protect insulation materials during installation. 3.6 PROTECTION A. Replace damaged insulation, which cannot be satisfactorily repaired, including insulation with vapor barrier damage and moisture-saturated insulation.

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