2.6.12.1
Humidity Conditioner
The humidity conditioning system shall consist of separate conditioning and
desiccant regeneration units providing complete separation of conditioned
and regeneration air streams. The manufacturer shall guarantee that there
will be no cross-leakage of conditioner and regenerator air streams under
any circumstances.
2.6.12.2
Fan Assembly
The regenerator shall be supplied with a separate field-mounted fan and fan
box assembly, consisting of housing, forward-curved fan motor, and drive.
The fan wheel shall be made of steel. The fan box shall be made of
galvanized steel. The fan wheel and fan box interior shall be heresite
coated. The fan box exterior shall be painted with a prime and finish coat
of industrial-grade acrylic machine enamel.
2.6.12.3
Equipment Location
The equipment shall be so designed that the conditioner and regenerator
units need not be installed in the same location, and may be located
wherever convenient. Where units are installed outside, weatherproof
insulation is required and adequate freeze protection for water, steam, and
condensate piping is required.
2.6.13
Regenerator Heater (Liquid Desiccant System)
The regenerator solution heater shall be of the plate-and-frame type, with
carbon steel frame carrier bars and tiebolts; titanium plates and nitrite
or EPDM gaskets. The solution heater shall be supplied complete with
heating fluid control valve. The heat exchangers shall be shipped loose
for field installation.
2.6.14
Level Control (Liquid Desiccant System)
The level control panel shall consist of safety interlock pressure switch,
unit pressure drop indicator, bubbler type supply pneumatics, P/I
transducer, I/P transducer, and PID single-loop controller, all contained
in a NEMA 12 enclosure. The level control panel shall be shipped mounted
to the unit.
2.6.15
Filter Screening (Liquid Desiccant System)
The unit shall be equipped with noncorrosive diffuser and filtering system
capable of filtering any droplets in the air stream and diffusing the
stream for uniform airflow distribution.
2.6.16
Freestanding Pump Assemblies (Liquid Desiccant System)
The conditioner and regenerator shall be equipped with a freestanding
seal-less pump and motor. The pumps shaft shall be made with an corrosion
resistant materials suitable for the desiccant solution and all other
wetted parts of vinylester FRP, or equal.
2.6.17
Make Up Water System (Liquid Desiccant System)
The unit shall be equipped with piping, valving, and controls to
automatically maintain solution level in the conditioner section.
The
SECTION 15500A
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