Hitachi UTOPIA RAS-4HVRP2E - Cold Draft Protection; Cold Draft Protection (Fb); Outlet Temperature (DOAS); Wave Function Setting

6 Optional functions
RAS-(4-6)H(V)(R/N)(C/P)2E
SMGB0136 rev.0 - 07/2021
139
6
6.2.3.11 Wave function setting (UE)
Press PSW3 and select the settings condition “0” to “1” to set wave function setting “UE”. The maximum running current
limit changes from 40% to 80%, as shown in the attached gure.
? NOTE
Inthecasethatthedemandcurrentcontrolbyexternalinputissetandtheexternalinputsignalisavailable,thisfunctionisnotavailable
evenwhenthedemandcurrentcontrolbyexternalinputsignalisperformed.
20 min.
20 min. 20 min.
20 min.
10 min.
10 min. 10 min.
A Electricity consumption (100%)
B Electricity consumption (40 to 80%)
Setting condition Current setting
0 Not available (default setting)
1 Value according to external input demand function
? NOTE
• Thecurrentlimitvalueistargetedvalue.Theactualcurrentvaluemaytemporarilybehigherthanthevalueshowninthetableabove
dependingontheoperatingcontrolcondition.
• Whenthescheduledoperationof“DemandFunctionSetting”issetfromthecentralizedcontroller,referto“TechnicalCatalog”and
“Installation&MaintenanceManual”ofthecentralizedcontroller.
6.2.3.12 Cold draft protection (Fb)
Press PSW1 and select the setting condition “0” to “2” to set the cold draft protection “Fb”. When the indoor unit
discharge air temperature drops falls down at cooling operation, the outdoor unit fan stops and the compressor frequency
decreases to prevent a drop in discharge air temperature. If the outlet temperature decreases and the temperature is
less than Thermo-OFF condition even after the compressor frequency decreases, the indoor unit becomes Thermo-OFF
condition. (When Thermo-OFF is activated under this condition, the operation will be restarted after 3 minutes).
? NOTE
• Thermo-ON:Theindoorunitisrunning.
• Thermo-OFF:Theindoorunitstayson,butdoesn’trun.
Setting condition
Outlet temperature
Target value At Thermo-OFF
0 - -
1 10ºC 7ºC
2 12ºC 9ºC