SECTION 22 07 00 PLUMBING INSULATION PART 1 - GENERAL 1.01
SUMMARY A.
This section includes the following insulation for plumbing systems. 1. 2. 3. 4.
1.02
RELATED DOCUMENTS A.
1.03
Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specifications, apply to this Section.
DEFINITIONS A.
1.04
Insulation materials Fire-rated insulation systems Mastics and adhesives Jacketing
The word "concealed" as used in this section refers to insulation in ceiling plenums, furred spaces, pipe and duct shafts, unheated spaces immediately below roof and crawl spaces. The word "exposed" refers to insulation in all other areas.
SYSTEM DESCRIPTION A.
Systems to be Insulated: All portions of the following systems, equipment, and accessories shall be insulated, except where noted otherwise or furnished by OEM as part of equipment. 1.
Cold Piping Systems: a. b.
c. d. 2.
Hot Piping Systems: a. b. c. d.
3. 4.
Domestic cold water Roof drain bowls, overflow drain bowls, roof drain leaders, overflow roof drain leaders, and storm water drains - horizontal only below roofline inside building, including roof drain bodies and the drop from the drain to the horizontal run All piping and all cold surfaces (valve bodies, etc.) inside equipment Fittings, valves, strainers, and check valves
Domestic hot water piping Domestic hot water circulation piping All piping inside equipment Fittings, valves, strainers, and check valves
Cold Equipment: Domestic cold water storage tanks and water softeners Hot Equipment: Hot water storage tanks and heaters (unless pre-insulated) 22 07 00 - 1 PLUMBING INSULATION
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5.
Items that need not be insulated: a. b. c. d. e. f.
1.05
SUBMITTALS A.
Product Data: For each type of product indicated. Include thermal conductivity, thickness, and jackets (both factory and field applied, if any).
B.
Shop Drawings: 1. 2. 3. 4. 5. 6. 7. 8.
C. 1.06
Detail application of protective shields, saddles, and inserts at hangers for each type of insulation and hanger. Detail attachment and covering of heat tracing inside insulation. Detail insulation application at pipe expansion joints for each type of insulation. Detail insulation application at elbows, fittings, flanges, valves, and specialties for each type of insulation. Detail removable insulation at piping specialties, equipment connections, and access panels. Detail application of field-applied jackets. Detail application at linkages of control devices. Detail field application for each equipment type.
Field quality-control reports.
QUALITY ASSURANCE A.
Fire-Test-Response Characteristics: Insulation and related materials shall have fire-test-response characteristics indicated, as determined by testing identical products per ASTM E 84, by a testing and inspecting agency acceptable to authorities having jurisdiction. Factory label insulation and jacket materials and adhesive, mastic, tapes, and cement material containers, with appropriate markings of applicable testing and inspecting agency. 1. 2.
1.07
Vertical storm water drain piping All exposed chrome-plated piping to sinks, toilets, etc. Flexible connectors, air chambers, drain lines from water coolers, and condensate drains Hot water pump housings Factory pre-insulated equipment Domestic hot water expansion tanks
Insulation Installed Indoors: Flame-spread index of 25 or less, and smokedeveloped index of 50 or less. Insulation Installed Outdoors: Flame-spread index of 75 or less, and smokedeveloped index of 150 or less.
DELIVERY, STORAGE, AND HANDLING A.
Storage and Protection: Protect insulation against dirt, water, chemical, or mechanical damage before, during, and after installation. Any such insulation or covering damaged prior to final acceptance of the work shall be satisfactorily
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repaired or replaced. B.
1.08
1.09
Packaging: Insulation material containers shall be marked by manufacturer with appropriate ASTM standard designation, type and grade, and maximum use temperature.
COORDINATION A.
Coordinate size and location of supports, hangers, and insulation shields specified in Division 22, Section "Hangers and Supports for Plumbing Piping and Equipment."
B.
Coordinate clearance requirements with piping Installer for piping insulation application, duct Installer for duct insulation application, and equipment Installer for equipment insulation application. Before preparing piping and ductwork Shop Drawings, establish and maintain clearance requirements for installation of insulation and field-applied jackets and finishes and for space required for maintenance.
C.
Coordinate installation and testing of heat tracing.
SCHEDULING A.
Schedule insulation application after pressure testing systems and, where required, after installing and testing heat tracing. Insulation application may begin on segments that have satisfactory test results.
B.
Complete installation and concealment of plastic materials as rapidly as possible in each area of construction.
PART 2 - PRODUCTS 2.01
PIPE INSULATION A.
Manufacturers: 1. 2. 3. 4. 5. 6. 7.
Armstrong World Industries Certainteed Crimpwrap Fibrex Insulations Inc.; Coreplus 1200 Knauf Insulation; 1000 Pipe Insulation Manson Insulation Inc.; Alley-K Owens Corning; Fiberglas Pipe Insulation Johns Manville; Micro-Lok
B.
Preformed fiberglass conforming to ASHRAE 90.1-2004, ASTM C547, Class I or II, and ASTM C585 with "K" factor of 0.23 Btu-in./h-sf-°F maximum at 75°F mean temperature. See schedule for thickness.
C.
Jacket shall be factory-applied ASJ/SSL type, ASTM C921, or ASTM C1136, Type I with vapor barrier for cold piping (below ambient), or Type II for hot piping (above ambient). Type I may be used for both at Contractor's option. Factory-applied flap 22 07 00 - 3 PLUMBING INSULATION
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adhesive (SSL) or conventional staple and tape seal at Contractor's option. D.
Pipe Insulation Thickness Schedule: Minimum Insulation Thickness for Pipe Sizes NPS 1
NPS 1-1/2
NPS 4
NPS 1
NPS 1-1/2
NPS 4
NPS 8
Greater than NPS 8
1/2” 1”
3/4” 1”
1” 1”
1” 1”
1” 1”
1”
1”
2”
2”
2”
1/2”
1/2”
1”
1”
1”
From: To less than: Domestic cold water Domestic hot water with and including recirculating loop (140°F and less) Domestic hot water, including recirculating loop (greater than 140°F) Roof drain bowls and piping
Piping System 1. 2.
3.
4.
Note: For piping exposed to outdoor ambient temperatures, increase thickness by 0.5 in. E.
2.02
Fittings and valves shall be covered with pre-molded one-piece PVC-insulated covers. This product is not to be installed in locations where its use is prohibited by local codes.
EQUIPMENT INSULATION A.
Specification "F": 2-inch-thick fiberglass board equal to CSG Group IB600. The board insulation shall be preformed, flat, rectangular, rigid material with a minimum density of 6 lb/ft3 and a maximum "K" value of 0.22 Btu-in./h-sf-°Fat 75°F mean temperature.
B.
Specification "G": 2-inch-thick fiberglass equal to CSG Group IB600. The board insulation shall be preformed, flat, rectangular, rigid material with a minimum density of 6 lb/ft3 and a maximum "K" value of 0.22 Btu-in./h-sf-°Fat 75°F mean temperature. The insulation board shall have a factory-applied FSK vapor barrier facing laminate of aluminum foil and Kraft paper reinforced with fiberglass scrim.
C.
Equipment Insulation Schedule: 1. 2.
D.
Domestic water tanks equipment Domestic hot water storage tanks
Spec G Spec F
The manufacturer for adhesives, sealants, and coatings is Foster and Childers Product Co.
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2.03
JACKETING MATERIAL FOR EQUIPMENT INSULATION A.
Provide pre-sized glass cloth jacketing material, not less than 7.8 oz. per sq. yd., or metal jacket at installer's option, except as otherwise indicated.
PART 3 - EXECUTION 3.01
INSTALLERS A.
3.02
Insulation shall be installed by workmen regularly engaged in this kind of work in strict accordance with the manufacturer's recommendations and recognized industry practices.
INSTALLATION A.
General: 1.
2.
3. B.
Pipe Insulation: 1.
2.
3. 4.
C.
Apply full-length units of insulation on clean, dry surfaces free of any foreign matter. Apply only after tests and approvals required by the specifications have been completed. Insulation on all cold surfaces must be applied with a continuous, unbroken vapor seal. Supports, anchors, etc., that are secured directly to cold surfaces must be adequately insulated and vapor sealed to prevent condensation. All raw edges shall be finished with finishing cement.
Pipe insulation shall be continuous through walls and floor openings except where walls and floors are required to be fire-stopped or required to have a fire-resistance rating. Where this occurs, the open space remaining between the sleeve and pipe shall be filled with fire-stop insulation. Butt all joints firmly together and smoothly, secure all self-sealing jacket laps and joint strips with monel staples at 6-inch O.C. and cover with lap adhesive or factory (SSL) adhesive. Ends of cold pipe insulation shall be sealed off with a vapor barrier coating at all fittings and valves and at intervals of 21 feet on continuous runs of pipe. Insulated cold pipes shall be insulated continuously through hangers. Rigid insulation inserts are to be provided at all pipe hangers and supports per Division 22 Section "Hangers and Supports for Plumbing Systems." Pipe insulation shall abut the rigid insulation insert. Apply a wet coat of vapor barrier lap cement on all butt joints and seal the joints with 3-inch-wide vapor barrier tape or band. Coat staples with heavy coat of brushed on vapor barrier lap cement.
Insulation on Fittings and Valves: 1.
Where the factory pre-molded one-piece PVC insulated fitting covers are to be used, the proper factory precut insulation shall be applied to the fitting using two layers for pipe temperatures above 250°F or below 35°F, single layer insulation is suitable between 35°F and 250°F. The ends of the insulation shall be tucked snugly into the throat of the fitting and the edges 22 07 00 - 5 PLUMBING INSULATION
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2.
3.
D.
Hot Equipment Insulation: 1.
2.
E.
Insulation board shall be cut and mitered to fit the contour of the vessel and shall be applied with edges tightly butted, joints staggered where two or more layers are necessary (due to available thickness of insulation) and secured with 1/2" x 0.015" galvanized steel bands on 12-inch centers or with weld pins or stick clips with washers on 18-inch centers. Over the insulation, 1-inch galvanized wire mesh shall be tightly stretched in place with edges tied together and finished with two coats of insulating cement troweled to a hard finish.
Cold Equipment Insulation: 1.
2.
F.
adjacent to the pipe covering, tufted and tucked in, fully insulating the pipe fitting. Covers shall overlap the adjoining pipe insulation and jackets and on cold pipes shall be sealed at all seam edges with vapor barrier adhesive. The circumferential edges of all covers shall be sealed with pressure sensitive tape. The tape shall overlap the jacket and the cover at least 1 inch. At locations where the PVC covers are prohibited, the Contractor may use as an alternate one of the following methods: one-coat insulation cement, premolded fiberglass fitting covers, or mitered segments of pipe insulation. Finish shall be glass fabric embedded in fire-retardant mastic. Mastic shall be vinyl acrylic mastic Childers CP-10/11 or equal for hot piping and shall be Childers CP-30 or Fosters 30-35 for cold piping. Valves may be insulated with sections of fiberglass pipe insulation complete with all service jacket. Raw ends shall be coated with vinyl acrylic mastic CP10/11 for hot piping or shall be coated with vapor barrier mastic (CP-30 or Fosters 30-35) for cold piping.
Insulation board shall be cut and mitered to fit the contour of the vessel and shall be applied with edges tightly butted, joints staggered where two or more layers are necessary (due to available thickness of insulation) and secured with 1/2" x 0.015" galvanized steel bands on 12-inch centers or with weld pins or stick clips with washers on 18-inch centers. Seal all joints, breaks, and punctures in facing with fire-retardant vapor barrier adhesive over which 4-inch-100wide tape similar to that of the facing material shall be placed.
Other Requirements: 1.
2.
3.
Do not insulate manholes, handholes, cleanouts, ASME stamp, and manufacturer's nameplate. Provide neatly beveled edge at interruptions of insulation. Provide removable insulation sections to cover parts of equipment that must be opened periodically for maintenance; include metal vessel covers, fasteners, flanges, frames, and accessories. Repair damaged sections of existing plumbing insulation, both previously damaged or damaged during this construction period. Use insulation of same thickness as existing insulation; install new jacket lapping and seal over existing. 22 07 00 - 6 PLUMBING INSULATION
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4.
Replace damaged insulation that cannot be repaired satisfactorily, including units with vapor barrier damage and moisture saturated units. END OF SECTION 22 07 00
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