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Hitachi PC-ARFH1E Betriebshandbuch Und Installationsanleitung Seite 57

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Maximum time:
Maximum time that DHW
operation can work using
heat pump mode. When the
heat pump is stopped by this
function, DHW is still heated by
DHW heater when it is enabled,
until other conditions request
stoppage.
• Range: OFF, 5 ~250 min
• Only in High Speed control and
Standard mode.
Cycle time:
Defines the minimum time between
2 heat pump cycles of domestic hot
water.
DHW will be able to operate
again after wait in Thermo off the
specified cycle time.
• Range: 0 ~24 hour
• Only available in Standard mode.
◆ Anti Legionella function
  
PMEN0602 rev.0 - 05/2023
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Status of anti legionella operation (enabled/disabled)
Specified day for anti legionella operation
Specified time of the day for anti legionella operation
Setting for domestic hot water temperature in anti legionella operation.
Duration of shock treatment. Between 10 to 60 minutes.
Space priority status:
If space priority function is enabled, Heat
Pump operation by DHW mode stops (and
continue with DHW heater, if necessary).
This function is only performed if space
heating or space cooling can be done. If it
is not possible, operation will continue in
DHW normally.
• Only available in Standard mode.
Space priority temperature:
Threshold value of outdoor ambient
temperature for the activation of the
space priority function.
• Range: -20~0 ºC
• Only available in Standard mode.
DHW Heater: Only available when DHW
heater is activated (DSW4 pin 3 ON).
• Waiting time: Enable or disable waiting
time for DHW heater.
• Electrical Heater waiting time: Waiting
time for the beginning of electrical
heater operation since compressor start-
up.
• Only available in High Speed control.
Anti Legionella:
In order to help prevent against Legionella
in the DHW system, the DHW set point
can be raised to a higher than normal
temperature.
The Legionella protection only makes
sense if there is a DHW electric heater to
raise the DHW temperature to this high
temperature.
See the possible configurable parameters
below.
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