2.1.5
Pumps
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NOTE: Design pumping systems for energy efficiency
in compliance with FEMP/Energy Star requirements
specified at www.eren.doe.gov/femp/procurement.
Indicate the equipment operating requirements,
including efficiency, on the drawings.
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2.1.5.1
In-Line Pumps
Provide pumps constructed of manufacturer's standard materials suitable for
chilled water and hot water heating systems. Pumps shall have mechanical
seals and drip-proof electric motors.
2.1.5.2
End Suction Water Pumps
Pumps shall be single stage centrifugal, with mechanical seals and
drip-proof electric motors. Impeller shall be bronze. Other pump parts
shall be manufacturer's standard materials provided with bronze impeller
pump. Provide threaded suction and discharge pressure gage tapping with
square-head plugs. Provide flexible coupling with steel cover guard on
base-mounted pumps. Base-mounted pump, coupling guard, and motor shall
each be bolted to a fabricated steel base which shall have bolt holes for
securing base to supporting surface. Close-coupled pump shall be provided
with integrally cast or fabricated steel feet with bolt holes for securing
feet to supporting surface.
[Provide pump suction diffuser. Pump casing shall include an angle type
body of cast iron. Unit shall have internal straightening vanes, strainer
with minimum 6.35 mm 0.25 inch openings, and auxiliary disposable fine mesh
strainer which shall be removed 30 days after start-up. Provide warning
tag for operator indicating scheduled date for removal. Casing shall have
connection sizes to match pump suction and pipe sizes, and be provided with
adjustable support foot or support foot boss to relieve piping strains at
pump suction. Blowdown port and plug shall be provided on unit casing.
Provide a magnetic insert to remove debris from system.]
[2.1.5.3
Pump Modules
Provide pump module units factory designed, assembled, and pressure tested.
Units shall include flanged pumps, brass fill and purge valves, quick
release fill and purge ports, pressure/temperature (Pete's) plug, wiring,
and fuse protection. Pumps shall be the wet rotor and single stage types,
with pump casings thermally insulated. Provide manufacturer's standard
galvanized steel cabinet, finished with corrosion resistant epoxy paint.
Pump module units shall be provided by the ground source, closed loop heat
pump manufacturer.
]2.2
ELECTRICAL
2.2.1
Electrical Motors, Controllers, Contactors, and Disconnects
Furnish with respective pieces of equipment. Motors, controllers,
contactors, and disconnects shall conform to Section 16402 INTERIOR
DISTRIBUTION SYSTEM. Provide electrical connections under Section 16402
INTERIOR DISTRIBUTION SYSTEM. Provide controllers and contactors with
maximum of 120-volt control circuits, and auxiliary contacts for use with
SECTION 15741N
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