FanCoils
INSTALLATION,OPERATION,&MAINTENANCEMANUAL
12
SECTIONTHREE—NormalOperation&PeriodicMaintenance
package,dependingonunitconguration.Itistheuser’s
responsibilitytoensurethetubeandpipingmaterials
furnishedbyIEC,arecompatiblewiththetreatedwater.
Failure to provide proper water quality will void the fan
coil unit’s warranty.
Water Containing Required Concentration
Sulphate Less than 200 ppm
pH 7.0 – 8.5
Chlorides Less than 200 ppm
Nitrate Less than 100 ppm
Iron Less than 4.5 mg/l
Ammonia Less than 2.0 mg/l
Manganese Less than 0.1 mg/l
Dissolved Solids Less than 1000 mg/l
CaCO3 Hardness 300 - 500 ppm
CaCO3 Alkalinity 300 - 500 ppm
Particulate Quantity Less than 10 ppm
Particulate Size 800 micron max
Water System Balancing
Acompleteknowledgeofthehydronicsystem,alongwith
itscomponentsandcontrols,isessentialtoproperwater
systembalancing.Thisprocedureshouldnotbeattempted
byunqualiedpersonnel.Thesystemmustbecomplete,
andallcomponentsmustbeinoperatingcondition
BEFOREbeginningwatersystembalancingoperations.
Eachhydronicsystemhasdifferentoperatingcharacteristics
dependingonthedevicesandcontrolsusedinthesystem.
Theactualbalancingtechniquemayvaryfromonesystem
toanother.
Afterthepropersystemoperationisestablished,the
appropriatesystemoperatingconditionssuchasvarious
watertemperaturesandowratesshouldberecordedin
aconvenientplaceforfuturereference.
Before,andduringwatersystembalancing,conditions
mayexistduetoincorrectsystempressureswhich
mayresultinnoticeablewaternoiseorundesiredvalve
operation.Aftertheentiresystemisbalanced,these
conditionswillnotexistonproperlydesignedsystems.
Controls Operation
Beforepropercontroloperationcanbeveried,allother
systemsmustbeoperatingproperly.Thecorrectwater
andairtemperaturesmustbepresentforthecontrol
functionbeingtested.Somecontrolsandfeaturesare
designedtonotoperateundercertainconditions.For
example,ona2-pipecooling/heatingsystemwithauxiliary
electricheat,theelectricheatercannotbeenergizedwith
hotwaterinthesystem.
Awiderangeofcontrols,electricaloptionsand
accessoriesmaybeusedwiththeequipmentcovered
inthismanual.Consulttheapprovedunitsubmittals,
orderacknowledgments,andotherliteraturefordetailed
informationregardingeachindividualunitanditscontrols.
Sincecontrolsandfeaturesmayvaryfromoneunitto
another,careshouldbetakentoidentifythecontrols
usedoneachunitandtheirpropercontrolsequence.
Informationprovidedbycomponentmanufacturers
regardinginstallation,operation,andmaintenanceoftheir
individualcontrolsisavailableuponrequest.
SECTIONTHREE–NormalOperation&
PeriodicMaintenance
General
Eachunitonajobwillhaveitsownuniqueoperating
environmentandconditionswhichmaydictatea
maintenancescheduleforthatunitthatisdifferent
fromotherequipmentonthejob.Aformalscheduleof
regularmaintenanceandanindividualunitlogshouldbe
establishedandmaintained.Thiswillhelptoachievethe
maximumperformanceandservicelifeofeachuniton
thejob.
Information regarding safety precautions contained in
the preface at the beginning of this manual should be
followed during any service and maintenance operations.
Formoredetailedinformationconcerningserviceoperations
consultyourSalesRepresentativeorthefactory.