CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS AURORA 790 SERIES

CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS AURORA 790 SERIES
AURORA 790 SERIES
®
CONSTANT PRESSURE BOOSTER
SYSTEMS WITH STACKABLE PUMPS
WWW.AURORAPUMP.COM
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
AURORA 790 SERIES
®
Constant Pressure Booster Systems
with Stackable Pumps
Capacities to 1200 GPM (272.5 M3 /HR)
Pressures to 346 psi (244 M)
Potable Water Application
Constant Pressure Pumping Introduction
CP Boss, Aurora’s packaged constant pressure booster systems are designed to meet the ever increasing demand of variable flows in high-rise,
commercial, municipal and industrial buildings. These PLC based systems are available in vertical configurations. Easy to select and install,
pre-engineered duplex and triplex units are available for quick delivery. Each system is performance tested for trouble free operation and ease
of installation and start-up.
Feature Selector
Standard Features
Optional Features
•UL labeled pressure sensing
control panel
•ASME rated steel bladder tank
•PLC pump sequence controller
•Galvanized, copper or stainless
steel headers
•Duplex or triplex
•Special control panels
•Vertical configurations
•Current sensing or flow sensing
•Vertical stackable pumps
• Simplex, quadruplex designs
•High efficiency motors
• Specially engineered booster
systems for higher flows and
pressures
•Steel manifolds
•Complete factory test
•Pilot operated pressure
regulating valves
•Maximum pressure up to 175 psi,
maximum flows up to 1200 GPM
• Single source responsibility
2
Packaged constant pressure booster systems described in this bulletin are
used in offices and high rise buildings.
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
Pump Features
B
A
E
C
F
I
H
D
G
A.
Completely Assembled
and prewired for easy installation.
B.
Pressure Sensing Control Panel
The programmable controller incorporated into the UL listed NEMA 1 Control Panel
readily allows for the addition of optional control functions and alarm features.
C.Systems
D.
E.
feature Aurora 390 Series vertical multi-stage in-line pumps in stainless
steel construction.
• High temp/high pressure mechanical Seal. Cartridge Design allows replacing
seal with out removing the motor.
• All wetted components of Aisi 304 stainless steel for corrosion resistance.
• Tungsten carbide vs ceramic bushings for long life at high temperatures.
Pressure Reducing
valves automatically reduce higher inlet pressure to a constant downstream
pressure regardless of changing flow rate or inlet pressure. Pilot control settings
are readily accessable and are easy to adjust. Return flow is prevented through
built in check valves. For some applications where constant discharge pressure
is not critical or where suction pressure is relatively constant as with a reservoir,
silent check valves may be substituted for pressure reducing valves.
Pressure Gauges
F.
Steel Manifolds
are painted Aurora blue for corrosion resistance and to meet various local codes.
Flanged connections provide easy installation. All piping is schedule 40.
G.
H.
Welded Groutable Steel Base
provides complete support while still allowing the unit to be readily maneuvered
for installation.
Full-Port Ball Valves
provided on each pump suction and discharge branch will allow individual pumps
to be serviced without interrupted operation.
I.
Thermal Relief Valve
is installed in pump casing to prevent overheating and pump failure. The valve will
automatically sense the rise in temperature and discharge some of the hot fluid
causing the cooler fluid to enter the casing and the valve will then close.
J.
Hydropneumatic Pressure Tank
(not illustrated) can be optionally provided to maintain system pressure during
periods of low demand. Depending on specific application, the tank can be located
adjacent to the system in the equipment room, remotely located, or mounted with
the system on the common baseplate.
are located on panel.
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3
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
Pump and System Selection
All packaged booster systems have a desired discharge pressure and a given suction pressure from the city water system, or from a suction
tank. Individual pump boost pressure is usually the system boost plus the friction losses within the booster system pipe, fittings, and pressure
reducing valves. Individual pump flow is usually two equal sized pumps on a duplex system, and a percentage such as 20% + 40% + 40% =
100% for a triplex system. Determine the system flow and boost as well as individual pump flow and boost.
1) Total system flow in GPM______________
(See Chart Below)
"
4"
3"
1/2
2-
"
2"
1/2
1/4
30
Determine system manifold size
0 – 140 GPM
2”
141 – 300 GPM
3”
301 – 600 GPM
4”
601 – 1000 GPM
6”
20
10
9
8
710
3) Determine pump head (TDH)
100
1000
U.S. GPM
A: Desired pressure at system discharge manifold
_______psig
B: Minimum pump suction pressure________psig
(City supply or tank)
Determine PRV size(s)
4
1-
40
PRESSURE DROP (FEET)
2)
"
(Total system flow ÷ No. of pumps)
P1______________
P1______________
P1______________
1-
Determine required flow per pump in GPM
C: Determine Flow Losses based on PRV Size__________Ft.
PUMP FLOW
0-110 GPM
111-191 GPM
192-280 GPM
281-435 GPM
PRV SIZE
1-1/2"
2"
2-1/2"
3"
Calculate Required Pump TDH: [ A - B ] x 2.31 + C
[ (A)____psig -____(B) psig ] x 2.31 +____(C) ft. =____ft.
Indivdual Pump Duty Points:
P1 ____________GPM @____________ft. TDH
P2 ____________GPM @____________ft. TDH
P3 ____________GPM @____________ft. TDH
4) Select required pumps and motors using Aurora H2Optimize
or the current Aurora Pump catalog
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
Performance Data
2880 R.P.M.
2880 R.P.M.
INDIVIDUAL PERFORMANCE CURVES SHOULD BE CHECKED
FOR FINAL SELECTION. FOR SELECTIONS NOT SHOWN ON
THIS CHART PLEASE REFER TO FACTORY.
600
391
394
396A
392
395A
397
393
160
400
300
200
TOTAL DYNAMIC HEAD-METERS
TOTAL DYNAMIC HEAD-FEET
500
120
80
40
391
392
393
394
395A
396A
397
100
0
0
5
10
0
15
20
25
30
35
40
45
CAPACITY-CUBIC METERS PER HOUR
50
100
150
CAPACITY-G.P.M.
50
60
200
250
70
300
350
3450 R.P.M.
3450 R.P.M.
INDIVIDUAL PERFORMANCE CURVES SHOULD BE CHECKED
FOR FINAL SELECTION. FOR SELECTIONS NOT SHOWN ON
THIS CHART PLEASE REFER TO FACTORY.
800
394
396A
392
395A
397
393
150
100
600
400
200
50
0
0
0
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391
200
TOTAL DYNAMIC HEAD-FEET
TOTAL DYNAMIC HEAD-METERS
250
391
10
392
20
5
30
393
40
10
50
394
75
100
CAPACITY-G.P.M.
395A
150
20
30
40
CAPACITY-CUBIC METERS PER HOUR
396A
200
250
50
397
300
350
75
5
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
Model Diagrams
DUPLEX
DUPLEX WITH TANK
6
CONSTANT PRESSURE BOOSTER SYSTEMS WITH STACKABLE PUMPS
Model Diagrams
TRIPLEX
TRIPLEX WITH TANK
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7
Engineering Specifications
The contractor shall furnish and install an Aurora variable
flow (duplex or triplex) constant pressure booster system as
manufactured by Aurora Pump. The unit shall have a total system
capacity of___GPM at a discharge head of___feet when supplied
with a working suction head of___feet. Each pump shall be sized
as indicated for a % of the total flow.
Duplex System PumpP1 =……..GPM……..%System
PumpP2 =……..GPM……..%System
Triplex System PumpP1 =……..GPM……..%System
PumpP2 =……..GPM……..%System
PumpP3 =……..GPM……..%System
Piping and Valves
Each system shall be skid mounted, completely assembled and
wired on a groutable steel base ready for installation. All piping
shall be schedule 40 Steel pipe. Each system shall include suction
and discharge ball valves for each pump suction and discharge,
combination pressure regulating/non-slam check valves for each
pump, flanged connections for easy installation and pipe supports
for the upper manifold. Suction and discharge pressure gauges
shall be provided. Gauges shall have 3-1/2" faces with large scale
numerals and individual air bleed type valves.
Pumps
The pumps shall be Aurora vertical multi-stage in line pumps.
Each pump shall be constructed with 304 stainless seel impellers
and diffusers, a high temperature mechanical seal with carbon
vs silicon carbide, EPDM elastomer through out, tunsten carbide
against ceramic pump bushings and a cast iron motor bracket.
Flanges will be ductile or cast iron in slip ring (and isolated from
liquid).
Control Panel-Pressure Sensing
Each system shall have a mounted and wired UL Listed NEMA I
control panel with individual magnetic motor starters, ambient
compensated overload relays on each phase, individual motor
fuseblocks with fuses, main circuit disconnect switch with door
interlock, 110 volt control transformer with primary and secondary
fuses. The panel shall be suitable for the horsepower and voltage
of the motors. The Control Panel will incorporate a programmable
logic controller with pressure-sensing logic and have the following
features:
• On and Off delays factory set to system operating characteristics
to prevent short cycling of pumps.
• Individual pump run lights and selector switches
•Failure logic and indicating light to activate second pump if
lead pump malfunctions.
• Automatic Lead/Lag pump alternation
•Low suction pressure shutdown with alarm light, horn and
reset button.
Testing
The entire system shall be tested at the factory to assure proper
sequencing to meet the design flows and pressure; and the system
components shall be adjusted at the factory.
Services
The pump manufacturer shall assume unit responsibility and shall
provide a factory trained engineer to supervise initial start-up to
insure proper operation and to instruct the operating personnel in
the operation and maintenance of the system.
Motors
UT
LIC
E
HY
IT
Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
A-02-1040 04/05/13 © 2013 Pentair Ltd. All Rights Reserved.
ISO 9001
ST
DR
AU
IN
19 17
800 AIRPORT ROAD, NORTH AURORA, ILLINOIS 60542 WWW.AURORAPUMP.COM
ST
EGI
ER E D Q U
TY SYSTEM
ALI
R
The motors shall be NEMA C-FACE, ……..hp, 3 phase, 60 hertz, ……..
volt, ODP, high-efficiency. Motors shall be selected so that they do
not exceed their nameplate hp rating through their entire range of
operation.
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