Hitachi UTOPIA RAS-4HVRP2E - Demand Function Setting; Demand Function Setting (De); Low Noise Setting (Db)

6 Optional functions
RAS-(4-6)H(V)(R/N)(C/P)2E
SMGB0136 rev.0 - 07/2021
138
6.2.3.9 Low noise setting (db)
Press PSW1 and select the setting condition “0” to “9” at the low noise setting “db” to reduce the upper limit compressor
frequency and the outdoor fan motor rotation frequency.
? NOTE
• Bysettingthisfunction,thecompressorfrequencyandtheoutdoorfanmotorrotationfrequencyareforciblyreducedandsotheout-
doorunitcapacitydecreasesandtheunitoperationrangeislimited.
• Theoperatingnoisevaluesforasingleunitareshownbelow.Thesearetargetedvaluesandsotheactualvaluescantemporarilybe
higherdependingonoperationconditions.Theoperatingnoisevaluesforcombinationunitsarehigherthanthevaluesbelow.
Setting
condition
Compressor
frequency limit
Outdoor fan
motor step limit
Operating noise (dB targeted value)
Outdoor unit capacity
(to specication)
RAS-4H(V)(R/N)(C/P)2E RAS-5H(V)(R/N)(C/P)2E RAS-6H(V)(R/N)(C/P)2E
0 Not changed Not changed Catalog value 100%
1 Not changed 20 steps - -
2 Not changed 18 steps - -
3 Not changed 16 steps - -
4 80% Not changed - -
5 60% Not changed - -
6 40% Not changed - -
7 80% 20 steps Setting 1: 68 Setting 1: 68 Setting 1: 69 80%
8 60% 18 steps Setting 2: 67 Setting 2: 67 Setting 2: 68 60%
9 40% 16 steps Setting 3: 66 Setting 3: 66 Setting 3: 67 40%
6.2.3.10 Demand function setting (dE)
Press PSW1 and select the settings for conditions “0” or “1” to set the demand function “dE”. This function is available by
setting to “1” for the demand current control without inputting the signal to the external input terminal on the outdoor unit
PCB1. The table below is shown for the limit of the operating current for this function.
? NOTE
Iftheoutdoorunitrunningcurrentexceedsthemaximumlimitfortwentyminutes,theindoorunitisputunderThermo-OFFcondition.In
thiscase,thestoppagecodeNumber“10”isgiven.
Setting condition Demand running current control
0 Not available (default setting)
1 Value according to external input demand function
Demand control
Adapting the self-demand function, which causes the power consumption to drop drastically for the purpose of saving
energy.
Excessive power supply consumption
exceeding the power setting range is
restricted
Power setting
Power Consumption
Morning Daytime
Operating Hours
Night
Selectable from 100%, 80%,
70%, 60% and 40% of the
rated power consumption for
cooling operation.
? NOTE
• Thedemandcurrentcontrol(%)isvaluecriterion.Thevalueusedforthiscontroliscalculatedfromthecurrent,andthereforeisdif-
ferentfromthevalueindicatedbyawattmeter.Ifitisrequiredthatthemaximumpowerconsumptionismanagedprecisely,aeld-
supplieddemandcontrollershouldbeused.
• Theactualvaluemaytemporarilybehigherthantheindicatedvalueshownabovedependingontheoperatingcontrolconditionssuch
asprotectioncontrol.