IEC CPY 12 - SECTION THREE - Normal Operation & Periodic Maintenance

FanCoils
INSTALLATION,OPERATION,&MAINTENANCEMANUAL
12
SECTIONTHREE—NormalOperation&PeriodicMaintenance
package,dependingonunitconguration.Itistheuser’s
responsibilitytoensurethetubeandpipingmaterials
furnishedbyIEC,arecompatiblewiththetreatedwater.
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
Acompleteknowledgeofthehydronicsystem,alongwith
itscomponentsandcontrols,isessentialtoproperwater
systembalancing.Thisprocedureshouldnotbeattempted
byunqualiedpersonnel.Thesystemmustbecomplete,
andallcomponentsmustbeinoperatingcondition
BEFOREbeginningwatersystembalancingoperations.
Eachhydronicsystemhasdifferentoperatingcharacteristics
dependingonthedevicesandcontrolsusedinthesystem.
Theactualbalancingtechniquemayvaryfromonesystem
toanother.
Afterthepropersystemoperationisestablished,the
appropriatesystemoperatingconditionssuchasvarious
watertemperaturesandowratesshouldberecordedin
aconvenientplaceforfuturereference.
Before,andduringwatersystembalancing,conditions
mayexistduetoincorrectsystempressureswhich
mayresultinnoticeablewaternoiseorundesiredvalve
operation.Aftertheentiresystemisbalanced,these
conditionswillnotexistonproperlydesignedsystems.
Controls Operation
Beforepropercontroloperationcanbeveried,allother
systemsmustbeoperatingproperly.Thecorrectwater
andairtemperaturesmustbepresentforthecontrol
functionbeingtested.Somecontrolsandfeaturesare
designedtonotoperateundercertainconditions.For
example,ona2-pipecooling/heatingsystemwithauxiliary
electricheat,theelectricheatercannotbeenergizedwith
hotwaterinthesystem.
Awiderangeofcontrols,electricaloptionsand
accessoriesmaybeusedwiththeequipmentcovered
inthismanual.Consulttheapprovedunitsubmittals,
orderacknowledgments,andotherliteraturefordetailed
informationregardingeachindividualunitanditscontrols.
Sincecontrolsandfeaturesmayvaryfromoneunitto
another,careshouldbetakentoidentifythecontrols
usedoneachunitandtheirpropercontrolsequence.
Informationprovidedbycomponentmanufacturers
regardinginstallation,operation,andmaintenanceoftheir
individualcontrolsisavailableuponrequest.
SECTIONTHREE–NormalOperation&
PeriodicMaintenance
General
Eachunitonajobwillhaveitsownuniqueoperating
environmentandconditionswhichmaydictatea
maintenancescheduleforthatunitthatisdifferent
fromotherequipmentonthejob.Aformalscheduleof
regularmaintenanceandanindividualunitlogshouldbe
establishedandmaintained.Thiswillhelptoachievethe
maximumperformanceandservicelifeofeachuniton
thejob.
Information regarding safety precautions contained in
the preface at the beginning of this manual should be
followed during any service and maintenance operations.
Formoredetailedinformationconcerningserviceoperations
consultyourSalesRepresentativeorthefactory.