2.8.5.4
Space Temperature
Space temperature shall be controlled within plus or minus 1 degree C 1.5
degrees F of the set point over a range of 16 to 32 degrees C 60 to 90
degrees F with a set point of [_____]. Space relative humidity shall be
controlled within plus or minus 5 percent of the set point over a range of
20 to 80 percent with a set point of [_____] percent.
2.8.5.5
Safety Controls
Safety controls shall include the following:
a.
Fused, unfused or line-break circuit breaker disconnects, as
indicated or required.
b.
Automatic pump-out or pump-down liquid flooding controls.
c.
High refrigerant pressure cutout.
d.
Low refrigerant pressure cutout where automatic pump-down is not
provided.
e.
Accessible hermetic and open compressor low oil pressure cutout.
f.
Elapsed time meter for each compressor where load equalization is
not incorporated.
g.
Lead and lag compressor selector switch, when compatible with
system.
2.8.6
Cabinet Construction
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NOTE: Delete the last sentence if inapplicable.
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Cabinet shall be totally enclosed. Enclosure surfaces shall be pulsation
free, with hinged and removable doors and panels for vertical side or front
access to unit components. Routine maintenance access to compressor and
system control components shall be possible without unit shut-down.
Enclosure surfaces shall be thermally and acoustically insulated. Interior
baffle and compartment surfaces shall be galvanized steel. Drain pans
shall collect all condensate and be steel with external insulation as
required. Surface mounting steel pads and vibration isolating pads shall
be provided. Enclosure surfaces shall be prepared, primed and finished.
Paint and finishes shall comply with the requirements specified in
paragraph FACTORY COATING. Cabinets shall be fitted with integral or
separable, adjustable and lockable jacks to support the units from the
structural slab at the raised-floor elevation.
2.9
EQUIPMENT EFFICIENCY
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NOTE: Use this note to determine the minimum
equipment efficiencies required for all equipment
specified. Present applicable efficiencies either
in this paragraph or on the design drawings. Delete
this paragraph if equipment efficiencies are shown
SECTION 15700A
Page 31
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