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SK2014‐SON‐002‐TechMnl‐FMCD‐003
C.1.5. ControlLogicsfor2‐PipeSystem
C.1.5.1. WithThermoelectricValveConfiguration
COOLMODE
a) MTV2,AUX1andelectricheaterarealwaysoff.
b) IfTr≥Ts+1ºC(or+4ºCifeconomycontactisactivated),thencooloperationisactivatedandMTV1and
AUX2areturnedon.Indoorfanrunsatsetspeed.
c) If
Tr<Ts, thencooloperationisterminatedandMTV1andAUX2areturnedoff.Indoorfanrunsatset
speed.
d) TherangeofTsis16‐30ºC
e) Indoorfanspeedcanbeadjustedtolow,medium,highandauto.
f) Whenturnedon,MTV1requires30seconds
beforeitisfullyopen.
g) Whenturnedoff,MTV1requires120secondsbeforeitisfullyclosed.
h) Whentheunitisturnedoff,theindoorfanwillshutdownafter5seconds.
LOWTEMPERATUREPROTECTIONOFINDOORCOIL
a) IfTi1≤2ºCfor2minutes,
thenMTV1andAUX2areturnedoff.Ifindoorfanissetforlowspeed,thenit
will run at medium speed. If it is set at medium or high speed, then it will keep running at the same
speed.
b) IfTi1≥5ºCfor2minutes,thenMTV1and
AUX2areturnedon.Indoorfanrunsatsetspeed.
FANMODE
a) Indoorfanrunsatthesetspeedwhileheater,MTV1,MTV2,AUX1andAUX2areturnedoff.
b) Indoorfanspeedcanbeadjustedtolow,mediumandhigh.
HEATMODE
WithoutElectricalHeater
a) MTV2,AUX2andelectricheaterarealwaysoff.
b) IfTr≤Ts‐1ºC(or‐4ºCifeconomycontactisactivated),thenheatoperationisactivatedandMTV1and
AUX1areturnedon.Indoorfanrunsatthesetspeed.
c) If Tr > Ts, then heat operation
is terminated and MTV1 and AUX1 are turned off. Indoor fan runs at
200rpm.
d) TherangeofTsis16‐30ºC.
e) Indoorfanspeedcanbeadjustedtolow,medium,highandauto.
f) Whenturnedon,MTV1requires30secondsbeforeitisfullyopen.
g)
Whenturnedoff,MTV1requires120secondsbeforeitisfullyclosed.
WithElectricalHeaterasBooster
a) MTV2andAUX2arealwaysoff.
b) If Tr≤Ts‐1ºC (or‐4ºC ifeconomy contactis activated),then heatoperation isactivated andMTV1
andAUX1areturnedon.Indoorfanrunsatthesetspeed.
c) If Tr > Ts, then heat operation is terminated and
MTV1 and AUX1are turned off. Indoor fan runs at
200rpm
d) If Ti1 < 40ºC, then theelectrical heater is turned on. If 40ºC≤Ti1 < 45ºC, then the electricalheater
maintainsitsoriginalstate.IfTi1≥45ºC,thentheelectricalheateristurnedoff.
e) Therangeof
Tsis16‐30ºC
f) Indoorfanspeedcanbeadjustedtolow,medium,highandauto.
g) Whenturnedon,MTV1requires30secondsbeforeitisfullyopen.
h) Whenturnedoff,MTV1requires120secondsbeforeitisfullyclosed.
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