Revision May 2017 SECTION INSULATION SYSTEMS

Transcription

1 Revision May 07 SECTION 0700 SYSTEMS.0 This section defines insulation system guidelines and requirements for piping, ductwork, and equipment insulation. (Interior piping and equipment, exterior piping, interior ductwork, and exterior ductwork)..0 Insulation shall be applied mechanical systems limit heat loss or gain, prevent condensation, protect people from hot or extremely cold surfaces, and improve the operating efficiency of all systems. Insulation types and thicknesses for services are specified within this Section and are generally applicable most projects. For specialty systems and for large specialty projects, studies of alternative insulation systems shall be initiated and justified on a case by case basis..0 Insulation materials approved for use in the University buildings shall have a fire hazard rating not exceed 5 for flame spread and 50 for fuel contributed and smoke developed. All materials shall be facry tested as an assembly. Fire ratings shall be determined by the standard method of testing for surfaceburning characteristics of building materials, ASTM E 8. Insulation approved for use shall have a UL label or a certified test report from an approved testing laborary..0 Insulation materials shall not be installed on systems until all necessary tests have been conducted and insulated surfaces have been thoroughly cleaned and are in a dry state. 5.0 Protect insulation during construction by covering with plastic prevent accumulation of dust and debris. Protection should be kept in place until completion of construction. 6.0 All adhesives sealers, vapor barrier coatings, etc. used in conjunction with insulation shall be compatible with the material which they are applied. Any cement, sealer, or coating used shall be resistant vermin and mold and shall be durable. Solvent based adhesives, coatings and sealants shall not be used in occupied areas. The use of solvent based adhesives, coatings and sealants for new construction shall be coordinated with building occupancy and other environmental health and safety issues during construction. 7.0 All insulation surfaces shall be durable and where exposed, protected from damage due maintenance operations, vandalism, weather, and normal wear and tear. 8.0 Pipe fittings, specialties, equipment and valves shall be protected using cusm premolded fitting covers and insulation (as defined below) allow frequent removal and reinstallation without damaging the jacket. A. Insulate all medium and high pressure (above 50 PSIG) steam piping fittings, flanges, valves, strainers, pressure reducing valves. For welded construction where routine access is not required, insulation shall match piping insulation. For nonwelded construction and specialties requiring access, cusm made insulated canvas jackets with "Velcro" type fastening devices shall be used. B. Where lower temperature systems (low pressure steam, hot water, refrigerant hot gas piping, etc.) are exposed in routinely accessed areas the same consideration as above shall be given for personnel safety. C. Systems subject condensation such as chilled water systems shall be subject the above insulation requirements. 9.0 Metallic components used for the installation of insulation systems shall be suitable for the intended environment and shall not corrode. Exposed external corners on duct and equipment insulation in occupied or mechanical areas shall be protected by corner beads consisting of inch by inch by 0.06 inch thick aluminum or 6 stainless steel. SYSTEMS SECTION 0700 PAGE

2 Revision May Insulation systems shall be specified meet industry standards, and installation requirements shall, as a minimum, include the following: A. Insulation shall be continuous at all hangers, hanger rods, supports, sleeves, and openings. Vapor seals must be provided for all cold surfaces and shall be continuous. Where supports must occur below insulation surface, the thickness shall be maintained over the support and extend sufficiently beyond the support prevent condensation. Insulation shall be sealed where it terminates because of a valve, union, flange, etc. B. All insulation shall be arranged permit expansion and contraction of systems without causing damage the insulation or surface. C. The actual insulation thickness must be a least equal the minimum specified at all locations, including supports in contact with cold surfaces. D. It is critical that insulation materials be installed in a professional manner with smooth and even surfaces. Scrap pieces of insulation shall not be permitted where a fulllength section will fit. E. Insulate pipe saddles and welded pipe standoffs at all points of pipe support. F. High density insulation inserts shall be used for pipe sizes and larger, where pipe saddles are located. High density insulation inserts for shields shall extend on all sides of the shield. Shields shall be constructed of 6 gauge minimum galvanized steel. G. All valves and strainers shall be insulated for all welded piping construction as defined above. Cusmfabricated jackets shall be used where defined above. H. Strainers requiring insulation shall be insulated permit removal of the basket without disturbing the insulation of the strainer. I. On ductwork or equipment, accessories shall be provided as required prevent disrtion and sagging of insulation. Welded pins, adhesive, seal staples, vapor barrier coatings, sealing tape, steel bands, and wire ties shall be provided as recommended by the insulation manufacturer. The following attachment methods are preferred:. : Brushed on adhesive plus welded pins. (For use in mechanical rooms and exposed areas). Wrap: Brushed on adhesive with welded pins on botm of ducts greater than inches wide.. Calcium Silicate: Noncorroding wire.. Ceramic Insulation: Stainless steel bands. J. Duct and equipment insulation shall cover all metal surfaces with fullthickness insulation. Duct standing seams require only minimal insulation prevent condensation. If condensation will not occur, insulation at standing seams can be reduced from the duct main insulation. K. Equipment Insulation. Water pumps (Chilled Water, Glycol/Water Solution, Condenser Water, Drainage for Air Conditioning Equipment, Cooling Tower Makeup Water, and Heat Exchanger Systems) shall be insulated with removable and replaceable square or rectangular covers consisting of full minimum 6 gauge aluminum or 6 stainless steel metal jackets reinforced at corners and edges and lined with insulation. Pumps with split casings shall be constructed with insulated housing in two or more sections with the upper section removable for access the casing. Cover sections shall be flanged, gasketed, and joined with stainless steel sheet metal screws. Lube fittings and drain valves shall extend outside of insulated covers.. For Evaporars, Water Chillers, Air Separars, Humidifier Separars, Expansion Tanks, Condenser Water Strainer, Water Srage Tanks and Water Water Heat Exchangers, fit board type insulation by scoring, cutting and mitering fit the conur of the equipment. Fill all voids with insulating cement. Insulate the water boxes or heads of evaporars by fabricating an enclosure from No. 8 SYSTEMS SECTION 0700 PAGE

3 Revision May 07 gauge thick galvanized steel sheet. Attach insulation the inside of the enclosure with adhesive. Slip enclosure over the insulation on the shell and draw tight. Where marine water boxes of chillers are be insulated, insulate the water box head separately permit removal of the head.. Alternately, equipment may be insulated with removable insulation covers cusm made for equipment insulation, such as Pacor Rapidwrap. For these covers: Enclosures shall be encased in vinyl cloth, aluminized cloth, or a coated fiberglass cloth. Filler shall be aerogel, microlite AA or fiberglass blanket. Closure system shall be Velcro (high temperature for high temperature applications) or belts & straps. All covers shall be cusm made and guaranteed fit. L. Where deemed necessary by the A/E or the University Engineering Department, specific insulation details shall be added the Contract Documents improve the insulation performance for specialty areas such as at roof drain bodies and horizontal rain water conducrs, or insulation in high humidity areas such as shower rooms and sterilizer areas may require special details for vapor barriers..0 Insulation may be omitted on the following items at the discretion of the University Engineering Department: A. Exposed brass or copper pipe specified be chrome plated (typically applies ilet rooms). B. All fire protection. C. ASME stamps on equipment. D. Access plates of fan housings. E. Cleanouts or handholes. F. Facrypreinsulated flexible ductwork. G. Facrypreinsulated HVAC equipment. H. Manufacturer s nameplates. I. Vibrationisolating connections..0 The minimum insulation standards for University projects and for the services listed are as indicated in the following Tables for Piping, Equipment, and Ductwork insulation. The A/E shall select the most suitable product for each individual service. Tables that follow are: Piping Insulation Schedule Mechanical Equipment Insulation Schedule Sheet Metal Ductwork Insulation Schedule SYSTEMS SECTION 0700 PAGE

4 Revision May 07 PIPING SCHEDULE System or Service Avg. Pipe Temp Degrees F Insulation Type Indoor Pipe Location Jacket (e) Insulation Thickness, Inches Below All Service Metal Fabric.5 58 Pipe Sizes, Inches Outdoor Grade 00 Refrigerant Suction Refrigerant Liquid Refrigerant Hot Gas (a) (a) (a) Brine 5 Chilled Water Horizontal [and Vertical] Rainwater Conducrs and Roof Drain Bodies Drains for Air Conditioning Equipment Runouts (< ) [Finned Tube Radiation, Unit and Cabinet Unit Heaters, Induction and Fan Coil Units, and Terminal Boxes, and (a) (a) (a) SYSTEMS SECTION 0700 PAGE

5 Revision May 07 PIPING SCHEDULE System or Service Avg. Pipe Temp Degrees F Insulation Type Indoor Pipe Location Jacket (e) Insulation Thickness, Inches Below All Service Metal Fabric.5 58 Pipe Sizes, Inches Outdoor Grade 00 Hot Water Heating Coils] [Laborary and] Domestic Cold, Hot and Recirculated Hot Water, Humidification Water, Trap Primer Water Handicapped Fixture Trap and Supply Hot Water Heating and Pumped Steam Condenser Water High Steam. 55 psig F MAINS: F BRANCHE S, DROPS AND RUNOUTS : Calcium Silicate Rock Wool (b) (c) SYSTEMS SECTION 0700 PAGE 5

6 Revision May 07 PIPING SCHEDULE System or Service Avg. Pipe Temp Degrees F Insulation Type Indoor Pipe Location Jacket (e) Insulation Thickness, Inches Below All Service Metal Fabric.5 58 Pipe Sizes, Inches Outdoor Grade 00 High Steam, 00 psig Medium Steam, 50 psig Low Steam, 5 psig High Medium Atmospheric and Low Flash Tank Vents and Tank/Receiv er Vents (e) Softened Water HeatTraced Lines Heated Fuel Oil Diesel Gas Engine Exhaust (including silencer) Calcium Silicate (c) (c) (c) (c) (c) (c) SYSTEMS SECTION 0700 PAGE 6

7 Revision May 07 PIPING SCHEDULE System or Service Avg. Pipe Temp Degrees F Insulation Type Indoor Pipe Location Jacket (e) Insulation Thickness, Inches Below All Service Metal Fabric.5 58 Pipe Sizes, Inches Outdoor Grade 00 a = Jacket required on outdoor piping. b = Polyvinyl chloride (PVC) jacket required. c = For use with directburied piping (not with conduittype systems). d = Insulate where the piping is accessible (e.g., up 8 feet above the finished floor). e= Protective jackets consisting of 0.06 inches 6 stainless steel shall be used for exposed (exterior) insulation systems and where exposed in interior mechanical equipment rooms, or other high traffic areas (up 0 feet above finished floor). As an alternative, PVC jacket and fitting covers may be used in these interior spaces. SPECIFICATION: : ASTM C 5, 5 pcf density, k = 0.7 Btuin/hft at 75 F : ASTM C 55, 8.5 pcf density, k = Btuin/hft at 75 F Calcium Silicate: ASTM C 5, pcf density, k = 0.8 Btuin/hft at 00 F : ASTM C 57, pcf density, k = 0. Btuin/hft at 75 F SYSTEMS SECTION 0700 PAGE 7

8 UNIVERSITY OF PENNSYLVANIA DRAFT July 7, 0 MECHANICAL EQUIPMENT SCHEDULE EQUIPMENT LOCATION EQUIPMENT TYPE SURFACE METAL TEMP (DEGREES F) TYPE IN DO OUT DO DENSITY (PCF) THICKNESS (INCHES) JACKET Cooling Coil Sections and Cooling Coil Pump Tanks 55 AllService Supply Fan, Dehumidifier, Air Blender, and Heating Coil Casings/ Sections 55 0 AllService Pumps Serving Cold Water Systems 0 80 or Cusm See Paragraph 9.0.J Removable Covers Sidestream Filters, Air Purgers and Air Separars Serving the Chilled Water and Hot Water Heating Systems 0 80 See Article 9.0.J WaterWater Heat Exchangers or Cusm Removable Covers 6 See Paragraph 9.0.J Chiller Evaporar and Condenser Marine Water Boxes, Condenser Water Strainer and Water Srage Tanks 0 6 See Paragraph 9.0.J SYSTEMS SECTION 0700 PAGE 8

9 UNIVERSITY OF PENNSYLVANIA DRAFT July 7, 0 MECHANICAL EQUIPMENT SCHEDULE EQUIPMENT LOCATION EQUIPMENT TYPE SURFACE METAL TEMP (DEGREES F) TYPE IN DO OUT DO DENSITY (PCF) THICKNESS (INCHES) JACKET SteamWater Heat Exchangers 50 Calcium Silicate or Cusm Removable Covers Cement Finish Steam Pumps, Receivers, Coolers and Flash Tanks 50 Calcium Silicate Cement Finish Water Treatment Chemical Mixing/ Srage Tanks Gauge Metal Jacket Expansion Tanks and Humidifier Separars 0 80 See Paragraph 9.0.J DuctMounted Sound Attenuars in Supply Air Ducts 75 AllService SPECIFICATION: : ASTM C 5, k = 0.7 Btuin/hft at 75 F Block: ASTM C 55, k = Btuin/hft at 75 F Calcium Silicate: ASTM C 5, k = 0.8 Btuin/hft at 00 F (w/ vapor barrier): ASTM C 6, k = 0. Btuin/hft at 75 F Wool Felt (block or blanket): ASTM C 59, k = 0 8 Btuin/hft at 600 F SYSTEMS SECTION 0700 PAGE 9

10 UNIVERSITY OF PENNSYLVANIA DRAFT July 7, 0 SHEET METAL DUCTWK SCHEDULE PLENUM DUCT LOCATION JACKET PLENUM DUCTWK TYPE TYPE INDO OUTDO DENSITY (PCF) THICKNESS (INCHES) Rectangular Supply and Return Ductwork in Mechanical Rooms, All Exposed Areas and Duct Shafts Rigid 6 AllService + Rectangular Supply and Return Ductwork in Concealed Areas Note: Return ductwork in plenum return spaces and /or conditioned areas is not required. Rigid Wrap 6 AllService + AllService + Outside Air Intake, Relief and Exhaust Plenums Rigid 6 6 AllService + Louver BlankOff Panels Rigid 6 Galvanized Sheet Metal (Two Sides) Round and FlatOval Supply and Outside Air Ductwork, and Return Ductwork in Mechanical Rooms Wrap AllService + Kitchen Hood Exhaust Ductwork Calcium Silicate Ceramic Blanket Fire Rated Ductwrap System 8 or (two inch layers) None None SYSTEMS SECTION 0700 PAGE 0

11 UNIVERSITY OF PENNSYLVANIA DRAFT July 7, 0 SHEET METAL DUCTWK SCHEDULE PLENUM DUCT LOCATION JACKET PLENUM DUCTWK TYPE TYPE INDO OUTDO DENSITY (PCF) THICKNESS (INCHES) Emergency or Standby Power Generar Air Intake Plenum, Intake Ductwork and Intake Attenuar Rigid 6 AllPurpose Jacket with Vapor Barrier Ductwork Requiring Noise Transmission Control (as indicated on the Drawings) Rigid 6 Noise Barrier Jacket + = For rectangular ducts and plenums exposed weather, pitch ductwork or insulation board minimum / inch per foot prevent rainwater from accumulating on p of duct or plenum. Cover insulation board with corrugated rolled aluminum jacketing installed in strict accordance with manufacturer's recommendations. ++ = Use doublelayer application of two inch thick panels ensure overlapping of all seams and joints minimize heat loss and hot spots. SPECIFICATION: Rigid and Semi Rigid (w/ vapor barrier): ASTM C 6, k = 0. Btuin/hft at 75 F Wrap (w/ vapor barrier): ASTM C 55, k = 0.7 Btuin/hft at 75 F Calcium Silicate: ASTM C 5, k = 0.8 Btuin/hft at 00 F Ceramic Blanket: k = 0.7 Btuin/hft with a melting point of 00 F and a hour fire rating for 5inch thickness when tested in accordance with ASTM E9 Thermal Insulating Wool: k = 0. Btuin/hft at 00 F : ASTM C 5, k = 0.7 Btuin/hft at 75 F SYSTEMS SECTION 0700 PAGE