IEC E055-71520316 User manual

Non-Programmable
Fan Coil Thermostat
Part Numbers: E055-71520316 with logo
E055-71520318 without logo
COOL
HEAT
AUTO
3.13"
3.13"
Features:
The IEC commercial non-programmable
fan coil is perfect for low voltage control
and provides the following features and
benefits:
• 2-or4-pipeoperation
• 3speedfanoperation
• Singleordualsetpointoption
• LargeThermoglow™display
• Heatingandcoolingindicatorlight
• Zonetemperaturecontrolto1-degree
accuracy
• Keypadlockout
• Drycontactfornormallyopenor
normallyclosedoption
• Outsideairtemperaturedisplay
• CelsiusorFahrenheitdisplay
• Displayblankingfeature
• Adjustabledeadband
• Auto-changeover
Specifications:
Recommended
Wiring
22AWG(36ftmax)
18AWG(100ftmax)
Operating
Temperature F (C) 41to104(5to40)
Storage
Temperature F (C) -40to135(-40to57)
Operating Relative
Humidity
0to95%(non-
condensing)
Dimensions (In.) 4.8x4.3x1.1
Power 5vaat24vac,60Hz
AWG - American Wire Gage
Agency Approvals:
ComplieswithFCCPart15rules.Thermostatdoesnotcause
harmful interference and accepts all interference received.
ULandUL,Canadaapproval.Thesethermostatsare
consideredlowvoltagedevicesbyULanddonotrequire
ULapproval.Asanaddedassurancetothequalityofthe
thermostats,thesethermostatsareULlisted.
Features and Benefits:
IEC’s commercial non-programmable low-voltage fan coil thermostat
maintainsroomtemperaturesbycontrollingtheoperationof2-or
4-pipefancoilsystems.Thesethermostatshaveseparateheatingand
cooling set points with auto-changeover as standard features.
Batteriesarenotrequired.Duringpowerinterruption,theinternal
memorystoressettingsforanunlimitedtime.
Thethermostathas3-speedfanoperationcapabilityandtheoption
to show single or dual set points.
Year-round comfort is assured:
One-degreecontrolaccuracypreciselymonitorsthedesiredspace
temperaturetowithin1degreeofusersetpointbyusingasolid-
state, laser-trimmed sensor.
Neverlost™memoryprotectiononthethermostateliminatesthe
needtoreconfigurethethermostatafterpoweroutagessoyour
configurationswillremainintactindefinitely.
IEC’swarrantyensurespeaceofmind.
Quickandeasyconfigurationforboththedisplayandthethermostat
makeadjustmentseasy.ThebacklitThermoglow™displayislarge
andeasytoread.
R
C
LISTED
US

Fan Coil Unit Non-
Programmable
Thermostat Guide
Specifications
System Description:
24 V programmable, 2- or 4-pipe
(orelectricheat),roomfancoil
unitcontrollerwithdigitaldisplay.
Quality Assurance:
UnitshallbetestedandcertifiedinaccordancewithFCCPart15for
RFinterference,isULandULCanadacertified,andmeetsEuropean
Communitystandards.
Delivery, Storage and Handling:
Eachunitshallbeindividuallypackagedfrompointofmanufacture
and shall be handled and stored in accordance with manufacturer’s
instructions.
Standard Equipment Features:
General:
The low-voltage, non-programmable digital thermostat shall be
low-voltagecapableofmaintainingroomtemperaturebycontrolling
operationofanHVACsystem.
Mounting:
Thermostat shall be wall-mounted, surface mounted, or unit mounted.
Standard Features:
Thermostat shall allow separate heating and cooling set points and
auto-changeover as standard.
Configurations:
Thethermostatshallacceptseveraldifferentequipment
configurations/applications including single-stage heating and
cooling, two stages of heating and cooling, or electric heating and
hydronicsystems.
Power:
Batteriesshallnotberequired.Duringpowerinterruption,theinternal
memoryshallstoreuser-defineddefaultsettingsforanunlimitedtime.
Display:
Thebacklitthermostatdisplayshallbelargeandeasytoreadwitha
singleadjustmenttoshowtemperatureinCelsiusorFahrenheit.
Settings:
• Thermostatshallhaveasolid-state,laser-trimmedsensorwith
one-degreecontrolaccuracytopreciselycontrolthedesiredspace
temperature to within 1 degree of user set point.
• Thethermostatshallhaveanauto-changeoverwithadjustable
deadband to enable the user to choose separate heating and
coolingsetpoints(35°Fto99°F).Thisadjustabledeadbandshallbe
configurabletouser’sspecifications(from1°to6°F)andincycles
perhour(2to6).
Other Features:
• Forsafetypurposes,thefrontpanelbuttonsshallbecapableof
beingdisabledtopreventunauthorizeduseofthethermostat.
Optional Features:
• Mountingplateandcoverplatetoallowthermostattobemounted
directlytowallortostandard2”x4”or4”x4”junctionbox.
Sequence of Operation
Four-Pipe Operation:
• TheModebuttonselectstheoperatingmodeofthethermostat.
IfOffisselected,thethermostatwillnotenterHeatingorCooling
mode.IfHeatisselected,thethermostatwillonlyenterHeating
mode(iftheroomtemperatureisbelowtheheatingsetpoint).If
Coolisselected,thethermostatwillonlyenterCoolingmode(if
theroomtemperatureisabovethecoolingsetpoint).IfAutois
selected,thethermostatwillenterHeatingorCoolingmodebased
on the room’s temperature and the heating and cooling set points.
Two-Pipe Operation:
• HeatOnly–WhenthethermostatisconfiguredforHeatOnly
operation,onlytheHeatandOffmodescanbeselected.
• CoolOnly–WhenthethermostatisconfiguredforCoolOnly
operation,onlytheCoolandOffmodescanbeselected.
• Heat/CoolwithChangeoverSensor–Whenthethermostatis
configured for operation with a changeover sensor, all the modes
are available for operation. If the water temperature is changed
duringtheyear,thethermostatwillautomaticallylockout
theincorrectmode.HeatorCoolmodesmaynotbeavailable,
depending on water temperature.
Total or Auxiliary Electric Heat:
TheModebuttonselectstheoperatingmodeofthethermostat.IfOff
isselected,thethermostatwillnotenterHeatingorCoolingmode.If
Heatisselected,thethermostatwillonlyenterHeatingmode(ifroom
temperatureisbelowtheheatingsetpoint).Fortotalelectricheat,a
callforheatwillenabletheelectricheater.Forauxiliaryelectricheat,
acallforheatwilleitherenabletheelectricheater(ifchilledwateris
inthecoil),oropenthecoilvalve(ifhotwaterisinthecoil).IfCool
isselected,thethermostatwillonlyenterCoolingmode(ifroom
temperature is above the cooling set point and chilled water is in the
coil).IfAutoisselected,thethermostatwillenterHeatingorCooling
mode based on the room’s temperature and the heating and cooling
set points.
Auto Changeover:
WhenthethermostatmodeissettoAuto,thethermostatwillprovide
automaticchangeoverfromHeatingorCoolingmodeandCoolingto
Heatingmodewhenrequired.Thethermostatwillautomaticallyswitch
to maintain the desired temperature setting. The thermostat does not
needtobemanuallychangedfromheatingtocoolingorcoolingto
heating operation.
Fan Operation:
WhenonlytheFanisinAutomode,itwillruncontinuously(unless
thermostatmodeissettoOfforthermostatisinunoccupiedmode
andheatingorcoolingarenotactive).Thethermostatwillincreaseor
decreasethefanspeedbasedonloadconditions.Fanoperationmay
alsobesettoalwaysrunatLow,Medium,orHighspeeds.
Dry Contact Switch/External Control:
• Adrycontactswitchisprovidedtoallowanexternaldevicetoforce
thethermostatintotheunoccupiedsetpointsconfiguredbythe
installer.Whenthethermostatisforcedintounoccupiedsetpoints
viathedrycontactclosure,theunoccupiediconwillblinkeach
second.
• Insomeapplications,thedrycontactswitchmaybeconfiguredto
disable the fan, heating, and cooling from a condensate switch. If
thecondensateswitchactivatesthedrycontact,thefancoilunit
will be deactivated instead of controlling to the unoccupied set
points.
Outside Sensor:
Thermostatshalldisplayoutsidetemperature(ifoptionaloutdoor
sensoriswiredtothermostat).
5000 W. I-40 Service Rd.•OklahomaCity,OK73128•405.605.5000•Fax405.605.5001•www.iec-okc.com
IEC Part #: I100-90007823
CA-300Revision2©2008-2019InternationalEnvironmentalCorporation(IEC)