A sequence of control, a schematic of controls, and
a ladder diagram should be included on the drawings
for each cooling tower fan, chilled water pump,
condenser water pump, etc. in order to define the
overall system operation.
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Chiller control packages shall be fully coordinated with and integrated
[into the temperature control system specified in Section 15895 AIR SUPPLY,
DISTRIBUTION, VENTILATION, AND EXHAUST SYSTEM and 15951 DIRECT DIGITAL
CONTROL FOR HVAC AND OTHER LOCAL BUILDING SYSTEMS] [into the existing
air-conditioning system].
PART 3
EXECUTION
3.1
INSTALLATION
Work shall be performed in accordance with the manufacturer's published
diagrams, recommendations, and equipment warranty requirements. Where
equipment is specified to conform to the requirements of ASME BPVC SEC VIII
D1and ASME BPVC SEC IX, the design, fabrication, and installation of the
system shall conform to ASME BPVC SEC VIII D1 and ASME BPVC SEC IX.
3.1.1
Refrigeration System
3.1.1.1
Equipment
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NOTE: Determine in the initial stages of design the
approximate distances required for maintenance
clearances of all new equipment. The maintenance
clearances will be used in determining the final
layout of the equipment.
For installations where noise and vibration
transmission to the building must be reduced, the
maximum tolerable transmissibility, in percent,
should be determined and the blank filled in with
the appropriate value. When it is not necessary to
specify the percent of transmissibility, the item in
the brackets will be deleted and brackets removed.
Recommended transmissibility in percentages are: 10
percent for equipment mounted in very critical
areas; 10 to 20 percent for critical areas; and 20
to 40 percent for noncritical areas. The drawings
should be checked to ensure that all structural and
equipment connection factors and the conditions
surrounding the equipment to be provided with the
vibration isolation units favorably influence the
effectiveness of the isolators. Where many items of
equipment require different transmission values,
based on the equipment location, the specification
may be revised to indicate the appropriate values on
the drawings.
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Refrigeration equipment and the installation thereof shall conform to
SECTION 15620A
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