DomesticWaterBoosterSystemSizingandSpecifying

TS10012

Friday2:45pm5:45pm

RichardHanson

My Project Goals99Did the design meet the technical and

commercial needs?

9Was the product the best value for the budget?9 If something broke did the pumps still run?9 If something broke, did the pumps still run? 9Does it still run automatically years after y y

shipment?

Operator Needs

Operator/Svc Tech High price for failure

Development Goal Minimize Shutdowns g p

Eliminate Complaints Conserve Energy

Lower TCO Minimize Adjustments Multiple Price Points

I take your project as seriously as you do

Operator confidence Total cost ofTotal cost of

ownership over time Singlesource Singlesource

responsibilityNationwide network Nationwide network

Domestic Water Boosters9Whats New9Notes to SelfNotes to Self

9Sizing Recommendations

Top New TechnologiesTop New Technologies

Third Party CertificationsThird-Party Certifications

Troubleshooting and Mods9Download pump

system info to transmit 9Upload program

changes

Networked C tiConnection

9Read All VFD data9Read All VFD data 9 300 VFD parameters

through the PLCthrough the PLC9BACNet Conn Still

AvailableAvailable

VFD Energy Savings Mode9Sl d th t9Slows down the motor9 reduces current9R d lt9Reduces voltage9Evaluates 6 motor

h t i ti t f thcharacteristics to further increase efficiency9 3 HP Example: 41 > 269 3 HP Example: .41 -> .26

VFD Protection

VFD's up to 40 HP inside a NEMA 1inside a NEMA 1 enclosureFan cooled with Fan-cooled with positive pressureThermostat Thermostat-controlled

NEMA 12 Option NEMA 12 Option

VFD Benefits ENERGY SAVINGS Smooth hydraulicsSmooth hydraulics Pressure adjustment

Maintenance of PRVs Maintenance of PRV s When recommended?

Demand(GPM) % Ti

AnnualH

CurrentS i

CurrentP HP

AnnualkW

FutureS i

FutureP HP

FuturekW

kWS i

Real Example(GPM) %Time Hours Sequencing PumpHP kW Sequencing PumpHP kW Savings

50% 4,380 Pump1 6.0 23,055 Off 0 23,055

1 5% 438 Pump1 6.0 2,306 Pump1 3 1,153 1,153

40 10% 876 Pump1 10.0 7,685 Pump1 5 3,843 3,843

80 10% 876 Pump1 13.0 9,991 Pump1 8 6,148 3,843

120 10% 876 1 & 2 23 5 18 060 Pump 1 10 7 685 10 375120 10% 876 1&2 23.5 18,060 Pump1 10 7,685 10,375

140 8% 700 1&2 24.2 14,878 Pump1 10 6,148 8,730

160 3% 262 1&2 24.6 5,672 Pump1 13.5 3,112 2,559

200 1% 87 1&2 25.0 1,921 Pump2 15 1,153 769

220 1% 87 1&2 27.8 2,136 Pump2 16.5 1,268 868

240 1% 87 1 & 2 30 7 2 359 P mp 2 18 1 383 976240 1% 87 1&2 30.7 2,359 Pump2 18 1,383 976

280 1% 87 1&2 36.6 2,813 Pump2 27 2,075 738

Estimated Savings20,000

25,000

15,000

0,000

10,000

5,000

-

Future KW Savings

Energy Savings Tank Tank LocationTank Location Pump Duty Point

Pump Speed Pump Speed Pump Type VFD

Tank Location

Additional benefits: Easy start-ups More reliable and self-sufficient operation Increased motor bearing and seal life Increased motor bearing and seal life Dramatically reduced sound and motor heat More information is available to the operatorMore information is available to the operator

alarm logs data history

adjustable keypad settings adjustable keypad settings Remote access to data

Panel SCCR Rating 65 kA9The VFD is *NOT* the weakest link in the

power circuit; it has a 100,000 amp short-circuit current rating. 9A power surge is more likely going to fryA power surge is more likely going to fry

the disconnect than the VFD.

Certified Touchsafe9IP109IP109IP20

Pressure Transmitter9Not the place to save money!

New Sequencing Possibilities Pressure Flow VFD Speed Power Combinations thereof Repressurization Mode

Problem Flow sequencing is best way to prevent

pump cycling BUT . . . Flow switches: inaccurate, unreliable Flow sensors: unreliable, expensive, p Installation is expensive, unreliable

Low Flow Verification ProblemFl it h (1 FPS) $ Flow switch (1 FPS) $

Paddlewheel flow sensor (1/4 FPS) $$ Magnetic flow sensor (1/8 FPS) $$$$$

1/4 FPS in a 4 pipe = 10 gpm1/4 FPS i 6 i 20 1/4 FPS in a 6 pipe = 20 gpm

Solution PLAN - sense low flow (power,

pump differential, VFD speed)O DO - slow down pump

CHECK to see if pressure holds (3 psi)holds (3 psi)

ACT - stop pump if pressure holdsholds

Added Charge Just before shutdown 10 psi standardp Adjustable

Solution Pressure PowerPower Differential

Pressure Pressure VFD Speed

Power vs. Pressure

New Pumps to Consider

Low Flow Energy SavingsEnergy Savings

Problem: D tDust

Solution:

Other Added ValueValue

Lonworks or BACN tBACNet Communication

3D CAD drawings/BIM integration

Sizing Basics

Do You Need a Booster?Do You Need a Booster?

Building Height (ft x .433 -> PSI) + Friction Losses+ Friction Losses + Pressure Required at Top = Pressure Required atPressure Required at

Base of Building

+ Friction Losses (10% approximately) Bernoullis EquationBernoulli s Equation

Most common error today?? Most common error today??

Pressure Required @ TopPressure Required @ Top

Flush ValvesC li T Cooling Tower

High-End Showers

Do You Need a Booster?Do You Need a Booster?

B ilding Height (ft 433Building Height (ft x .433 = PSI)

+ Friction Losses + Pressure Required at Top = Pressure Required at

Base of Building

Example: 10 Story Hotel

Building Elevation (10 floors 12/floor) 10 fl 12/fl 120

52 psi +

10 floors x 12/floor = 120120 x .433 psi/ft

Friction losses 5 psi +Friction losses (52 psi x .1)

5 psi +

Pressure Required at top 30 +q pNo cooling tower, 30 psi for FV

Pressure Required at Base ( k S t P )

= 87 psig(aka System Pressure)

Boost Pressure Calc.

Pressure Required at Base of Building(aka System Pressure PSIG)(aka System Pressure - PSIG)

- Pressure @ flow test location+/- Elevation change- Water Meter loss- Water Softener loss= Pump System Boost (PSID)= Pump System Boost (PSID)

Example: 10 Story HotelExample: 10 Story Hotel

System (discharge) Pressure 87 psig

Minimum Suction (incoming) Pressure 30 psigPressure 30 psig

Pump System DifferentialPump System Differential87 psig 30 psig = 57 psid

Scheduling Your BoosterPump System Boost (we recommend)

+ 5 PSI Internal Losses 5 PSI Internal Lossesx 2.31 = Pump TDH (commonly specd)

Protect Yourself!

This System Pressure

Not This Pump TDH System Pressure

Minimum Suction

Pump TDH

Maximum Suction

120 PSI Discharge50 PSI Min S ction

162?173?50 PSI Min. Suction

70 PSI Maximum

173 ?

Pressure Control Bottom Zone Zone PRVsZone PRV s

Estimating FlowEstimating Flow

Codes Practice

Hunters vs Actual

Oversized By:Occupancy Type

30-75%?Apartment, Office, School

25-55%?Hotels, Motels

Just Right!Stadiums

10-40%?Hospital, Schools

Just Right!Stadiums

Redundancy Recommendations

Redundant PumpsOccupancy Type

0Apartment, Office, School, Hotel

1Hospital, Stadiums

,

Example: Yankee Stadium 369 Womens Toilets 98 Mens Toilets 298 Mens Urinals 150 Lavatories 150 Lavatories 50 Kitchens

369 Womens Toilets98 Mens Toilets298 Mens Urinals150 Lavatories50 Kitchens

E ti ti FlEstimating Flow

Fixture Type Count FU Total

T il tToilets

Urinals467 10 4670

298 5 1490Urinals

Lavatories

298 5 1490

150 2 300

Kitchens 50 4 200

6660 fixture units -> 900 gpm approximately

Example: Embassy Suites 20 Story Hotel 50 Rooms/Floor50 Rooms/Floor Lower 3 Floors on City Pressure

Flush Tank Toilets in Rooms Flush Tank Toilets in Rooms

20 Story Hotel y 50 Rooms/Floor Lower 3 floors on city

Estimating FlowEstimating Flow

Fixture Type Count FU Total

BathroomGroup

S

850 3.6 3060

Bar Sink

Mop Sink850 1.4 1190

68 3 204Mop Sink

Icemaker

68 3 204

68 25? 1768 .25? 17

4471 fixture units -> 580 gpm

Pump OptionsPump Options

Discussion Points Importance of selecting the right pump Typical pumps used in plumbingTypical pumps used in plumbing Best application for each type

Reading a pump curve Reading a pump curve Matching a pump with a system curve Optimal solution

Importance of the Right Pump Selecting the right pump for the application Selecting the highest efficiency pumpSelecting the highest efficiency pump Selecting a good quality pump

Understanding the cost of down time Understanding the cost of down time

Most Popular PumpsMost Popular Pumps

Close-coupled Flex-coupled End pEnd Suction

Vertical Turbine

pSuction

Vertical MultistageVertical Turbine Column-mounted

Turbines

Vertical Multistage Horizontal Split

CaseTurbines Case Self-priming

End SuctionEnd Suction Most popular pump in the world Most popular pump in the world Small compact design For low flows @ low-medium head Lowest initial cost Easy to maintain

End Suction Pump Curve

Horizontal Split Casep

Larger foot print Best for high flows

and high heads Best design pump

resulting in many years of trouble free

i ifservice if . . . Used in variety of

li ti i l diapplications including fire fighting

HSC Pump Curve

Vertical MultistageVertical Multistage

Low flows at high heads Minimal space

requirements Low first cost High shutoff pressureg s uto p essu e

VMS Pump Curve

Vertical Turbine Pump

Low - high flows @high - very high headshigh very high heads

Minimal footprintW ll b t i t ll ti Well or booster installation

Very high quality, but . . . High efficiencies

VT Pump Curve

Self PrimingSelf-Priming

Mainly used yfor lifting waste water

Solids handlinghandling capabilityAi t l? Air control?

MATCHING PUMP WITH SYSTEM CURVE

PPump curve

HEADSystem Curvesy

FLOW

Proper Pump Selection

Determine selection criteriaM f t th t t Manufacturer that supports you

Meets technical requirements Highest possible efficiency Select pump size closest to bestSelect pump size closest to best

efficiency point Confirm space availability Confirm space availability

General Recommendations

Boost Pressure

Total System Flow 50 psi

0 400 gpm boost 2 ES 2 VMS*0 400 gpm boost 2 ES 2 VMS

400 900 gpm 3 ES 3 VMS*

>900 b t 3 HSC 3 VT>900 gpm booster 3 HSC 3 VT

* If VFD* If VFD

Pressure Control OptionsPressure Control Options

Variable Speed PumpP R l ti Pressure Regulating Valve

Zone PRVs 3-5 floors None Requiredq

Tank SizingTank Sizing

Higher in the building is better if no PRVs How big a tank?How big a tank?

Acceptable leak load? Minimum pump flow?Minimum pump flow? Additional installation cost for bigger tank?

Maintenance replacement of bigger tanks? Maintenance, replacement of bigger tanks?

Tank Efficiency

Bigger the better forEnergy savings Energy savings

Reducing pump cycling Smaller the better for

Cost Installation

Maintenance Maintenance

RecommendationsRecommendations

100 Gallon minimum36 80 i 36 x 80 maximum

Top of building if any of these Top of building if any of these VFD No PRVNo PRV >200 psi Steady suction pressure

ASPE Recommendation

Leak load 0.5% for most commercial buildingsg 4% for Hospitals

Size for 10-30 minute off time

Locate based on largest storage opportunity using Boyles Lawopportunity, using Boyle s Law.

Conclusion Find a partner that you trust to provide a

design that meets your needsOR

Confirm that some product can meet your Confirm that some product can meet your WHOLE specification and drawing

Online Sizing GuideOnline Sizing Guide

http://www.syncroflo.com/boostersizing/step1.phpg

Online Resources http://www.pumpsystemsmatter.org/ http://www.pmengineer.com/Articles/Coverhttp://www.pmengineer.com/Articles/Cover

_Story/BNP_GUID_9-5-2006 A 100000000000003271452006_A_10000000000000327145

TS 100-1-2Hanson_Richard