2.14
PREVENTION OF GALVANIC CORROSION
Materials that will be exposed to water during operation of the unit shall
be such that galvanic action will not occur in the normal operation of the
equipment. The interior of water tank and cabinet and the exterior of the
fan housing shall be finished with an enamel paint coat or epoxy coating.
There will be no evidence of holidays and particular attention will be
given to sealing joints. Media retainer will not be coated. This
paragraph does not apply to nonmetallic materials or the interior water
tank and cabinet of stainless steel materials.
2.15
CONTROLS
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NOTE: This section may be omitted for less complex
systems.
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Controls shall be as specified in Section 15950A HEATING, VENTILATING AND
AIR CONDITIONING (HVAC) CONTROL SYSTEMS.
2.16
THERMOSTATS
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NOTE: Thermostats will be shown on the drawings.
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Thermostats shall be line voltage heavy duty type 115 volt ac and shall
have an electrical rating greater than the cooler being controlled or shall
be low voltage type. Thermostats shall have a range of 7 to 29 degrees C
(45 to 85 degrees F) 45 to 85 degrees F with [an adjustable] [1 degree C 2
degree F] differential range. Thermostats shall be UL listed and shall
have an indicator [and a transparent cover with lock].
PART 3
EXECUTION
3.1
INSTALLATION
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NOTE: Supply line stop and waste valves will be
indicated on the drawings. Where required, backflow
preventers will be shown on the drawings
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All equipment shall be installed as shown and in accordance with the
manufacturer's diagrams and recommendations except where otherwise
indicated. Units shall be connected to the building's water supply system.
Piping installation shall be as specified in Section 15895 AIR SUPPLY,
union shall be installed in the water supply line adjacent to each unit.
Valves shall not be installed with stems below the horizontal. All supply
piping shall be sloped to drain to the indicated stop and waste valve.
3.2
AIR-SUPPLY AND DISTRIBUTION SYSTEM
Equipment, sheet metal work, air filters, and terminal units shall be
installed as specified in Section 15895 AIR SUPPLY, DISTRIBUTION,
VENTILATION, AND EXHAUST SYSTEM.
SECTION 15690A
Page 18
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