Specifications - State of Delaware

SECTION 230700 - MECHANICAL INSULATION: continued
B. Items Not Insulated:
1. Factory-insulated flexible ducts.
2. Factory-insulated plenums and casings.
3. Flexible connectors.
4. Vibration-control devices.
5. Factory-insulated access panels and doors.
6. Exhaust ducts connected to exhaust fans EF-1 and EF-2.
3.15 INDOOR DUCT AND PLENUM INSULATION SCHEDULE:
A. Round and flat-oval, air duct insulation shall be any of the following:
1. Flexible Elastomeric: 1 inch thick.
2. Mineral-Fiber Blanket: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.
B. Rectangular, air duct insulation shall be any of the following:
1. Flexible Elastomeric: 1 inch thick.
2. Mineral-Fiber Blanket: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.
3. Mineral-Fiber Board: 1-1/2 inches thick and 2-lb/cu. ft. nominal density.
C. Supply-air and return-air plenum insulation shall be any of the following:
1. Flexible Elastomeric: 1 inch thick.
2. Mineral-Fiber Blanket: 1-1/2 inches thick and 0.75-lb/cu. ft. nominal density.
3. Mineral-Fiber Board: 1-1/2 inches thick and 2-lb/cu. ft. nominal density.
3.16 EQUIPMENT INSULATION SCHEDULE:
A. Insulation materials and thicknesses are identified below. If more than one material is listed
for a type of equipment, selection from materials listed is Contractor's option.
B. Insulate indoor and outdoor equipment in paragraphs below that is not factory insulated.
C. Geothermal-water air-separator and expansion tank insulation shall be any of the following:
1. Mineral-Fiber Board: 2 inches thick and 3-lb/cu. ft. nominal density.
2. Mineral-Fiber Pipe and Tank: 2 inches thick.
3.17 PIPING INSULATION SCHEDULE, GENERAL:
A. Acceptable preformed pipe and tubular insulation materials and thicknesses are identified for
each piping system and pipe size range. If more than one material is listed for a piping system,
selection from materials listed is Contractor's option.
B. Items Not Insulated: Unless otherwise indicated, do not install insulation on the following:
1. Fire-suppression piping.
2. Below-grade piping.
3.18 INDOOR PIPING INSULATION SCHEDULE:
A. Domestic Cold Water:
1. All Sizes: Insulation shall be any of the following:
a. Flexible Elastomeric: 1/2 inch thick.
b. Mineral-Fiber Pipe Insulation, Type I: 1/2 inch thick.
B. Exposed Sanitary Drains, Domestic Water, Domestic Hot Water, and Stops for Plumbing
Fixtures for People with Disabilities:
1. All Pipe Sizes: Insulation shall be any of the following:
a. Flexible Elastomeric: 1/2 inch thick.
b. Mineral-Fiber Pipe Insulation, Type I: 1/2 inch thick.
230700-18 DEAN230700.DOC