Complete Compiled Specification.pdf - Peck Ormsby Construction

AIR SEPARATORS:
Type: Provide air separators of tangential type constructed of steel and tested and stamped in accordance with
section 8 of the ASME Code for a working pressure of 125 psig.
Provide separators on hydronic systems capable of separating not less than 80 percent of the entrained air on
the first passage of water and not less than 30 percent of residual air on each subsequent passage through the
separator.
Provide flanged inlet and outlet connections, 3/4-inch diameter valve drain connection and 1-inch diameter top
air eliminator connection.
Provide 1-inch diameter pipe from the top air eliminator point to a 5 gallon, steel, ASME stamped 125 pound
working pressure air receiver vessel with automatic float vent.
Provide 1-inch diameter globe valve between the air separator and the air receiver.
EXPANSION TANKS:
Furnish and install pre-pressurized diaphragm-type expansion tanks of sizes indicated on the drawings.
Construct tanks of steel in accordance with section 8 of the ASME Code for a working pressure of 125 psig.
Test and stamp tanks for the working pressure.
Support tanks on 2-inch diameter steel pipe legs with cross bracing and floor plates or suspend on steel saddles
with all-thread rod anchored to the structure.
The tanks shall be the product of a manufacturer who certifies that his tanks have been a standard production
model for five years prior to opening bids and warrants the diaphragm material unconditionally, against failure or
leakage for a period of five years from the date of project acceptance.
CHILLED & HOT WATER COILS:
Furnish and install the cooling and heating coils of capacities as shown and specified on the drawings.
Coils shall be of the extended surface type, fabricated of copper or brass tubing not less than 5/8” diameter with
.035” thick walls and plate-type fins of copper or aluminum extending at right angles to the centerline of the
tubes. Pressure parts of the coils shall be constructed and tested for a working pressure of not less than 200
psig.
Each coil section shall be mounted in a die-formed, 16 gauge, zinc-coated steel casing with mounting flanges.
All coils shall have inlet, outlet, vent and drain connections for each section and shall have all connections at the
same end.
Coils shall be York, Dunham-Bush, Bohn, AAF, Carrier, Trane, or Thermal.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
HEATING-COOLING 15700-20