Hitachi RPC-4.0FSR - Cold Draft Control During Cooling Operation; Automatic Heating;Cooling Operation

14
A10762290A
● The“ControlCoolAir”functionmaynothave
muche󰀨ectdependingontheoperating
conditionsoftheoutdoorunit.
● Incaseoneoutdoorunitisconnectedtomultiple
indoorunitsandtherateoftheseindoorunits
whichareequippedwiththe“ControlCoolAir”
functionislow,thisfunctionmaynothavemuch
ofane󰀨ect.
● Whenthisfunctionisset,itmaytakeafew
minutestocooltheentireroom.
● Whilethisfunctionisactivated,“Colddraftrest.”
isdisplayedontheLCDcontrolpanelofthe
wiredcontroller.
10.1.6 AutomaticHeating/CoolingOperation
Incasedualsetpointisselectedinautomatic
heating/coolingoperation,duringautomodeboth
coolingsetpointandheatingsetpointcanbe
selected.
Bydefault,temperaturewhentheheating/cooling
modechangesareasfollows.
Coolingmodechangestoheatingmodewhenthe
indoortemperatureisheatingsetpoint-1
o
C.
Heatingmodechangestocoolingmodewhenthe
indoortemperatureiscoolingsetpoint+1
o
C.
Ifthetemperatureforchangingmodesrequires
tobechanged,refertothe“Installation&
MaintenanceManual”forthewiredcontrollerand
the“ServiceManual”fordetails.
Anautomaticheating/coolingoperationrequires
extrasettings.
Refertothe“Installation&MaintenanceManual”
forthewiredcontrollerandthe“ServiceManual”
fordetails.
A/C
MODE SPEED TEMP
AUTO
Meeting Room
LOUV.
Avoid
HEAT TEMP Adj.LOUV.
28 .5 26 .5
COOL HEAT
A/C
MODE SPEED TEMP
AUTO
LOUV. Adj.
Meeting Room
LOUV.
Cold draft rest.
Avoid
28.0
•Di󰀨erentOperationMode
Whentheoperationmodesetbythewired
controllerisdi󰀨erentfromtheoutdoorunit
operationmode,theactualoperationmode
ashesontheLCD.
(exceptfortheheatrecoverysystemmodels)
Theabovedisplayshowsthecasethat
thecoolingmodeissetfromthewired
controllerwhileactualoperationmode
oftheoutdoorunitisheating.
Flashing
Thecurrentoperationmodeandthemessage
“OtherremoteareinHEATsetting”willbe
ashing.
10.1.5 ColdDraftControlduringCoolingOperation
(1) Function
Thisfunctioncontrolstheovercoolingairow
topreventofcolddraft.
(2) SettingItems
*OFF :Thisfunctionisnotavailable.
*LOW:
Theover-coolingairow
 temperatureiscontrolledlowdegree.
*MID :Theover-coolingairow
 temperatureiscontrolledmedium
 degree.
*HIGH:Theover-coolingairow
 temperatureiscontrolledhigh
 degree.
(Thedefaultsettingis“OFF”)
(3) SupplementofFunction
•Thedischargeairtemperatureiselevated
higherin“HIGH”>“MID”>“LOW”order.
•Therecommendeddischargeair
temperaturesettingis“LOW”.
(Whenfeelingcoldat“LOW”,changethe
settingto“MID”or“HIGH”.)
*Thisfunctionalsoreducestheformationof
dewcondensationontheindoorunitwhen
thedischargeairtemperatureislowerthan
theinletairtemperatureinaveryhumid
room.
(Therecommendeddischargeair
temperaturesettingis“LOW”.)