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Heat Controller, Inc. HBH/V COMPACT IOM Instructions

Water Quality Standards

Table 3: Water Quality Standards

WaterÊQuality

Parameter

Material

Closed

Recirculating

OpenÊLoopÊandÊRecirculatingÊWell

ScalingÊPotentialÊ-ÊPrimaryÊMeasurement

pH/CalciumÊHardness

All

pHÊ<Ê7.5ÊandÊCaÊHardnessÊ<100ppm

Method

IndexÊLimitsÊforÊProbableÊScalingÊSituationsÊ-Ê(OperationÊoutsideÊtheseÊlimitsÊisÊnotÊrecommended)

Ryznar

All

- 6.0Ê-Ê7.5

StabilityÊIndex IfÊ>7.5ÊminimizeÊsteelÊpipeÊuse.

Langelier

All

-0.5ÊtoÊ+0.5

SaturationÊIndex

IfÊ<-0.5ÊminimizeÊsteelÊpipeÊuse.ÊBasedÊuponÊ150¡FÊ[66¡C]ÊHWGÊand

DirectÊwell,Ê85¡FÊ[29¡C]ÊIndirectÊWellÊHX

IronÊFouling

IronÊFe

(Ferrous)

All

<0.2ÊppmÊ(Ferrous)

(BacterialÊIronÊpotential)

IfÊFe

Ê(ferrous)>0.2ÊppmÊwithÊpHÊ6Ê-Ê8,ÊO2<5ÊppmÊcheckÊforÊironÊbacteria

IronÊFouling

All

<0.5ÊppmÊofÊOxygen

AboveÊthisÊlevelÊdepositionÊwillÊoccur.

CorrosionÊPrevention

All

6Ê-Ê8.5

Monitor/treatÊas

needed

MinimizeÊsteelÊpipeÊbelowÊ7ÊandÊnoÊopenÊtanksÊwithÊpHÊ<8

HydrogenÊSulfideÊ(H

All

- <0.5Êppm

AtÊH

S>0.2Êppm,ÊavoidÊuseÊofÊcopperÊandÊcopperÊnickelÊpipingÊorÊHX's.

RottenÊeggÊsmellÊappearsÊatÊ0.5ÊppmÊlevel.

CopperÊalloyÊ(bronzeÊorÊbrass)ÊcastÊcomponentsÊareÊOKÊtoÊ<0.5Êppm.

AmmoniaÊionÊasÊhydroxide,Êchloride,Ê

nitrateÊandÊsulfateÊcompounds

All

<0.5Êppm

Maximum

MaximumÊAllowableÊatÊmaximumÊwaterÊtemperature.

ChlorideÊLevels

50¡FÊ(10¡C) 75¡FÊ(24¡C) 100ϒF (38ϒC)

Copper - <20ppm NR NR

CuproNickel - <150Êppm NR NR

304ÊSS - <400Êppm <250Êppm <150 ppm

316ÊSS - <1000Êppm <550Êppm < 375 ppm

Titanium - >1000Êppm >550Êppm >375 ppm

ErosionÊandÊClogging

ParticulateÊSizeÊand

Erosion

All

<10ÊppmÊofÊparticles

andÊaÊmaximum

velocityÊofÊ6ÊfpsÊ[1.8Êm/s].

FilteredÊforÊmaximum

800ÊmicronÊ[800mm,

20Êmesh]Êsize.

<10ÊppmÊ(<1ÊppmÊ"sandfree"ÊforÊreinjection)ÊofÊparticlesandÊaÊmaximum

velocityÊofÊ6ÊfpsÊ[1.8Êm/s].ÊFilteredÊforÊmaximumÊ800ÊmicronÊ[800mm,

20Êmesh]Êsize.AnyÊparticulateÊthatÊisÊnotÊremovedÊcanÊpotentially

clogÊcomponents.

Notes:

Rev.: 01/21/09B

• NR - Application not recommended.

• "-" No design Maximum.

• Closed Recirculating system is identified by a

closed pressurized piping system.

• Recirculating open wells should observe the open recirculating design considerations.

AboveÊtheÊgivenÊlimits,ÊscalingÊisÊlikelyÊtoÊoccur.ÊÊScalingÊindexesÊshouldÊbeÊcalculatedÊusingÊtheÊlimitsÊbelow

ScalingÊindexesÊshouldÊbeÊcalculatedÊatÊ150¡FÊ[66¡C]ÊforÊdirectÊuseÊandÊHWGÊapplications,ÊandÊatÊ90¡FÊ[32¡C]ÊforÊindirectÊHXÊuse.Ê

AÊmonitoringÊplanÊshouldÊbeÊimplemented.