Hitachi PC-ARFH1E - Page 57

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PMEN0602 rev.0 - 05/2023
1
MENU
PC-ARFH1E FUNCTIONALITIES
Maximum me:
Maximum me that DHW
operaon can work using
heat pump mode. When the
heat pump is stopped by this
funcon, DHW is sll heated by
DHW heater when it is enabled,
unl other condions request
stoppage.
• Range: OFF, 5 ~250 min
• Only in High Speed control and
Standard mode.
Cycle me:
Denes the minimum me between
2 heat pump cycles of domesc hot
water.
DHW will be able to operate
again aer wait in Thermo o the
specied cycle me.
• Range: 0 ~24 hour
• Only available in Standard mode.
3 / 4
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DHW Heater: Only available when DHW
heater is acvated (DSW4 pin 3 ON).
• Waing me: Enable or disable waing
me for DHW heater.
• Electrical Heater waing me: Waing
me for the beginning of electrical
heater operaon since compressor start-
up.
• Only available in High Speed control.
An 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 protecon only makes
sense if there is a DHW electric heater to
raise the DHW temperature to this high
temperature.
See the possible congurable parameters
below.
Space priority status:
If space priority funcon is enabled, Heat
Pump operaon by DHW mode stops (and
connue with DHW heater, if necessary).
This funcon is only performed if space
heang or space cooling can be done. If it
is not possible, operaon will connue in
DHW normally.
• Only available in Standard mode.
Space priority temperature:
Threshold value of outdoor ambient
temperature for the acvaon of the
space priority funcon.
• Range: -20~0 ºC
• Only available in Standard mode.
◆ An Legionella funcon
Status of an legionella operaon (enabled/disabled)
Specied day for an legionella operaon
Specied me of the day for an legionella operaon
Seng for domesc hot water temperature in an legionella operaon.
Duraon of shock treatment. Between 10 to 60 minutes.