2.8
DUCT WORK
2.8.1
Plenums and Ductwork
Desiccant units shall be provided with flanges on the air openings for duct
connection. Inlet and outlet plenums shall be bolted to the flange with a
gasket between the connection. Access doors, for servicing diffusers and
eliminators, shall be provided in the inlet and outlet plenums. Inlet
ductwork must be designed to allow uniform distribution of air across the
entire opening. Outlet plenums and ductwork must allow adequate room for
servicing the eliminators and must provide proper airflow through the
equipment. Plenum and ductwork sizes shall be as shown and specified in
Section 15895 AIR SUPPLY, DISTRIBUTION, VENTILATION, AND EXHAUST SYSTEM.
2.8.2
Regenerator Exhaust Ductwork
The regenerator exhaust ductwork shall be made of glass-fiber reinforced
polyester (FRP) or monel. FRP must be rated for continuous duty at 82
degrees C 180 degrees F. Duct joints should be of watertight construction.
The exhaust plenum and duct should incorporate a drip collar to capture any
condensation that occurs inside the duct. Long horizontal duct runs should
be pitched slightly in the direction of air flow, and shall incorporate
low-point condensate drains.
2.9
SUPPLEMENTAL COMPONENTS/SERVICES
2.9.1
Drain and Makeup Water Piping
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NOTE: All drain and makeup water piping should be
indicated on the drawings.
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Piping shall comply with the requirements of Section 15400A PLUMBING,
GENERAL PURPOSE. Drains which connect to sanitary sewer system shall be
connected by means of an indirect waste.
2.9.2
Steam Piping and Accessories
Steam piping and accessories shall be provided and installed in accordance
with Section 15569A WATER AND STEAM HEATING; OIL, GAS OR BOTH; UP TO 20
MBTUH.
PART 3
EXECUTION
3.1
INSTALLATION
All work shall be performed in accordance with the manufacturer's published
diagrams, recommendations, and equipment warranty requirements.
3.2
EQUIPMENT
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NOTE: Designer will determine, in the initial
stages of design, the approximate distances required
for maintenance clearances of all new equipment. he
maintenance clearances will be used in determining
the final layout of the equipment. For
installations where noise and vibration transmission
SECTION 15500A
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