Minimum capacity for condensate pumps and receivers:
Pump capacity,
Capacity receiving Tank
EDR sq m
liters per sec.
liters
Minimum capacity for condensate pumps and receivers:
Pump capacity,
Capacity receiving Tank
EDR sq.ft.
gpm
gallons
1,000
1.5
20
2,000
3.0
20
4,000
6.0
30
6,000
9.0
45
8,000
12.0
60
10,000
15.0
75
15,000
22.5
115
20,000
30.0
150
25,000
37.5
190
30,000
45.0
225
40,000
60.0
300
50,000
75.0
375
75,000
112.5
570
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Each pump shall have a minimum capacity of [_____] L/second gpm when
discharging against the specified pressure. Minimum capacity of the tank
shall be [_____] liters gallons. Condensate pumping unit shall be of the
[single] [duplex], [horizontal-shaft] [vertical-shaft] type. Unit shall
consist of [one pump] [two pumps] [one electric motor] [two electric
motors] and a single receiver. Pump shall be centrifugal or turbine type,
bronze-fitted throughout, with impellers of bronze or other
corrosion-resistant metal. Pumps shall be free from air-binding when
handling condensate up to 95 degrees C 200 degrees F. Pumps shall be
connected directly to drip-proof enclosed motors. Receiver shall be cast
iron and shall be provided with condensate return, vent, overflow, and pump
suction connections, water level indicator and automatic air vent.
Strainer shall be provided in the inlet line to tank. Vent pipe shall be
galvanized steel, and the fittings shall be galvanized malleable iron.
Vent pipe shall be installed as indicated. Vent piping shall be flashed as
specified. Pump, motor, and receiving tank may be mounted on a single base
with the receiver pipe to the pump suction. A gate valve and check valve
shall be provided in the discharge connection from each pump. Enclosed
float switches complete with float mechanism shall be installed in the head
of the receiver. Each condensate pump shall be controlled automatically by
means of the respective float switch that will automatically start or stop
the motor when the water in the receiver reaches the high or low level
respectively. Motors shall be provided with magnetic across-the-line
starters equipped with general purpose enclosure and "Automatic-Manual-Off"
selector switch in the cover. Automatic alternator shall be provided for
duplex units.
2.3.2
Vacuum Pumping Unit
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NOTE: The number of pumps for the vacuum pumping
unit will be specified; and the inapplicable
material in brackets will be deleted. If a vacuum
SECTION 15562A
Page 17
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