Laserfiche WebLink
2. Insulate each-item of equipment specified above with one of the following types and thicknesses of insulation: <br /> a. Fiberglass: 2"thick,except 3"thick for low-pressure boilers and steam jacketed heat exchangers. <br /> b. Calcium Silicate: 3" thick, except 4'/a" thick for low-pressure boilers and steam jacketed heat <br /> exchangers. <br /> c. Flexible Cellular Elastomeric: 1"thick. Do not use for equipment operating above 180°F. <br /> C. Breeching and Stacks: <br /> 1. Application Requirements: Insulate the following breechings and stacks: <br /> a. Breechings between heating equipment outlet and stack or chimney connection,except for double wall or <br /> factory insulated breechings. <br /> b. Stacks from bottom to top except for factory insulated stacks. <br /> 2. Insulate each breeching and stack specified above with one of the following types and thicknesses of <br /> insulation: <br /> a. Fiberglass: 3Y2"thick. <br /> b. Calcium Silicate: 5"thick. <br /> D. Equipment Exposed to Weather: Protect outdoor insulation from weather by installation of weather-barrier, steel <br /> jacket with epoxy mastic protective finish,applied as recommended by manufacturer. <br /> ' 3.06 INSTALLATION OF PIPING INSULATION <br /> A. General: Install insulation products in accordance with manufacturer's written instructions, and in accordance with <br /> recognized industry practices to ensure that insulation serves its intended purpose. <br /> B. Install insulation on pipe systems subsequent to installation of heat tracing,painting,testing and acceptance of tests. <br /> C. Install insulation materials with smooth and even surfaces. Insulate each continuous run of piping with full-length <br /> units of insulation,with single cut piece to complete run. Do not use cut pieces or scraps abutting each other. <br /> D. Clean and dry pipe surfaces prior to insulating. Butt insulation j oints firmly together to ensure complete and tight fit <br /> over surfaces to be covered. <br /> E. Maintain integrity of vapor-barrier jackets on pipe insulation,and protect to prevent puncture or other damage. <br /> F. Cover valves, fittings and similar items in each piping system with equivalent thickness and composition of <br /> insulation as applied to adjoining pipe run. Install factory molded, precut or job fabricated units (at Installer's <br /> option)except where specific form or type is indicated. <br /> G. Extend piping insulation without interruption through walls, floors and similarP1P g penetrations, exc' in t where <br /> except <br /> otherwise indicated. <br /> iH. Butt pipe insulation against pipe hanger insulation inserts. For hot pipes,apply 3"wide vapor barrier tape or band <br /> over the butt joints. For cold piping apply wet coat of vapor barrier lap cement on butt joints and seal joints with 3" <br /> wide vapor barrier tape or band. <br /> I. Equipment Exposed to Weather. Protect outdoor insulation from weather by installation of weather-barrier, <br /> aluminum jacket,applied as recommended by manufacturer. <br /> 15250-7 No.99132-M <br />