HVAC DESIGN MANUAL 02-00
Attachment No. 6
Climatic conditions for the Department of Veterans Affairs
DESIGN TEMPERATURES
Notes:
1.
For application of tertiary distribution arrangement, see para. 10.2 Central Chilled Water Systems.
2.
Dual secondary pumps, P5 and P6, each rated at 50% of design GPM at design head, with motors sized for
single pump operation. 7.5 HP and larger pumps shall be variable speed.
3.
Provide 15% (minimum) pump flow by use of 3 way coil valve(s). Alternately, provide a 2 way control valve
for CC-3 and a 2 way automatic bypass valve at CC-3 to provide for an automatic bypass of chilled water
when the coil control valve begins to close. The automatic bypass valve and line shall be sized to handle
15% (minimum) pump flow.
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