SystemAir TA 4500 HW

4Operation
TAunitsequippedwithElectricalheaterperforms3minutesofre-coolingaftertheunithavebeenturnedof.
Note:
•Ifactivatingtherealarmwhentheheaterisswitchedon,thefanstopsimmediatewithoutre-cooling,
thiscancausetheoverheatingprotectiontotrip.Seegure2andgure3wheretoreset.
•Resetoftheoverheatprotectionmustbedonebyanauthorizedelectrician.
•Anomni-polardisconnectingswitchmustprecedetheunit.
4.1Temperaturecontrolpossibilities
TypeofControl
Temperaturesensorplacement
Description/function
Supplyairtemperaturecontrol:
Thesupplyairtemperaturesensor
isplacedinthesupplyairduct
approximately3maftertheunit.
Controlsthetemperatureofthe
supplyair
Supplyairtemperaturecontrol
withoutdoorairtemperature
compensation:
2temperaturesensorsare
needed.
Theoutdoortempsensoris
mountedintheductconnectedto
theinletoftheunit.
Thesupplyairtempsensoris
placedinthesupplyairduct
approximately3maftertheunit.
Compensatesforlowoutdoor
temperaturesbyincreasingthe
supplyairtemperaturewithan
optionalvaluetoavoidsudden
temperaturedropsintheinterior
ofthebuilding.Presetis+
20Ktemperatureincreaseat
-20°Coutdoortemperatureand
+15Kincreaseat0°Coutdoor
temperature.
Extractairtemperaturecontrol:2temperaturesensorsare
needed.
Theextractairtempsensoris
placedintheextractairductor
intheroomifthebuildinglacks
extractairducting.
Thesupplyairtempsensoris
placedinthesupplyairduct
approximately3maftertheunit.
Settheextractairtemperature
between+16°Cto+30°C(preset
is+18°C).
Toensurethatthesupplyair
temperatureproducedbythe
unitisnottoolowortoohigh,a
minimumandmaximumsupply
airtemperaturevaluecanbeset
bytheinstaller/operator.Preset
minimumtemperatureis+12°C
andmaximumtemperatureis
+30°C.
4.2Heatstart
Theheatcontrolalwaysstartsfrom100%outputsignal.
TA450-4500
OperationandMaintenanceInstructions
132616
7
SystemairSverigeAB