Column A - Square meters (feet) equivalent direct
radiation (EDR).
Column B - Minimum water capacity (liters per second
(gallons per minute)) only at 71 degrees C (160
degrees F), with 139.7 mm (5-1/2 inch) heating
vacuum and the required discharge pressure.
Column C - Minimum capacity liters per second (gpm)
from system with simultaneous pumping of both water
and air, maintaining 139.7 mm (5-1/2 inch) vacuum at
71 degrees C (160 degrees F).
Column D - Minimum liters (cubic feet) of air
handled by the pump with simultaneous pumping of
both water and air, maintaining 139.7 mm (5-1/2
inch) vacuum at 71 degrees C (160 degrees F).
The condensate receiving tank will have a capacity
between the float-switch start and stop of not less
than 1/2 the flow capacity of the pump listed in
column B.
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Minimum capacity, water only, of the pumping unit shall be [_____] L/second
gpm, at 70 degrees C 160 degrees F with 139.7 mm 5-1/2 inch heating vacuum
and the required discharge pressure. Minimum capacity of the pumping unit
shall be [_____] liters gallons of water and [_____] L/second cfm of air
with simultaneous pumping of both water and air and with a 139.7 mm 5-1/2
inch vacuum at 70 degrees C 160 degrees F. Condensate receiver shall have
a capacity, between float-switch start and stop, of not less than [_____]
liters gallons.
2.3.2.2
Motor and Controls
Each pump shall be driven by a sleeve- or ball-bearing motor of such size
that the brake horsepower required by the pumping unit under the specified
rated capacities shall not exceed the nameplate rating of motor. Motor
shall be drip-proof type, and shall conform to the requirement specified in
Section 16402 INTERIOR DISTRIBUTION SYSTEM. Fully automatic controls shall
be provided for each pump motor, consisting of a float in the receiving
tank, a float switch, an adjustable vacuum switch, an automatic
across-the-line magnetic starter providing thermal-overload protection, and
a Float and Vacuum (fully automatic control) Float Only-Continuous-Off
selector switch.
2.3.3
Space Temperature Controls
**************************************************************************
NOTE: The space temperature controls shown will be
reviewed and the inappropriate paragraphs will be
deleted. Indicate on the drawings the locations
where metallic raceway or electric metallic tubing
is not required for protection of nonmetallic
tubing. Delete air dryer and standby compressor
when not required.
**************************************************************************
Space temperature control system shall be pneumatic, electric, or
SECTION 15562A
Page 19
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