2.5.3
Unit Accessories
[Integral] [Remote] condensers shall be in accordance with paragraph
CONDENSER, [_____]. Accessories to be used in combination with each unit
shall be provided as indicated and shall be in accordance with paragraph
REFRIGERANT ACCESSORIES. Outdoor condensing units shall be provided with
weather hoods.
2.5.4
Electrical Controls
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NOTE: Verify that reverse-phase, and
phase-imbalance protection provisions are available
in sizes under 70 kW (20 tons). Check with
manufacturers before specifying other than
across-the-line starting. If the transmissibility
of equipment vibration is critical, indicate the use
of service-rated flexible connectors on all pipe,
tubing, and conduit to the equipment.
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Electrical controls for the unit shall be in accordance with paragraph
ELECTRICAL WORK and include at a minimum main and branch circuit overload
protective devices compensated for ambient temperatures as recommended by
the manufacturer; status pilot lights; compressor safety, operating and
capacity controls; defrost controls; local and remote audible and visual
alarms with provisions to silence; short cycling control with lock-out
timer; time delay for sequenced compressor starts; and remote component
interface.
2.6
CONDENSER, AIR-COOLED
Unit shall be factory fabricated and tested, packaged, self-contained and
ready for full capacity operation after terminal point connections. Unit
shall conform to ARI 460. Split systems shall be manufacturer matched
units. Fans shall be propeller or centrifugal type as specified in
paragraph Fans. Fan motors shall have [open] [dripproof] [totally
enclosed] [explosion proof] enclosures. Electrical controls for the unit
shall be in accordance with paragraph ELECTRICAL WORK shall include a
control transformer and shall be capable of interfacing with local and
remote components.
2.6.1
Unit Casing
Casing shall be weatherproof and enclose all unit components. Structural
members and sheet metal for the unit casing shall be constructed of
galvanized steel or aluminum. Casing shall be fitted with lifting
provisions, access panels, removable legs, and fan and heat rejection coil
guards and screens.
2.6.2
Condenser Coil
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NOTE: When coils are located in a corrosive or
salt-laden environment, require both the copper or
aluminum tubes and the protective coating.
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SECTION 15652A
Page 20
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