Mitsubishi EHST20D-YM9C - Supplementary Information

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SUPPLEMENTARY INFORMATION
Refrigerant collecting (pumpdown) for split model systems only
Referto“Refrigerantcollection”intheoutdoorunitinstallationmanualorservicemanual.
Back-up operation of boiler
Heatingoperationisbackedupbyboiler.
For more details, refer to the installation manual of PAC-TH011HT-E.
<Installation & System set up>
1.SetDIP-SW1-1toON"Withboiler"andSW2-6toON“WithMixingtank”.
2.InstallthethermistorsTHWB1(Flowtemp.)andTHWB2(Returntemp.)*1ontheboilercircuit.
3.Connecttheoutputwire(OUT10:Boileroperation)totheinput(roomthermostatinput)ontheboiler.*2
4.Installoneofthefollowingroomtemperature thermostats. *3
Wireless remote controller (option)
Room temp. thermostat (local supply)
Main remote controller (remote position)
*1 The boiler temperature thermistor is an optional part.
*2OUT10hasnovoltageacrossit.
*3Boilerheatingiscontrolledon/offbytheRoomtemp.thermostat.
<Remote controller settings>
1.GotoServicemenu>Heatsourcesettingandchoose“Boiler”or“Hybrid”.*4
2.GotoServicemenu>Operationsettings>Boilersettingstomakedetailedsettingsfor“Hybrid”above.
*4The“Hybrid”automaticallyswitchesheatsourcesbetweenHeatpump(andElectricheater)andboiler.
OCH570C