Hitachi ADVANCED COLOR PC-ARFH2E Manuel D'installation Et D'utilisation page 88

Setting temperature:
Setting for domestic hot water temperature
selected by the user. The maximum value of
this setting depends on the Maximum setting
temperature set by the installer. (Between 30 to
maximum setting temperature.)
Status of Hot Water Tank:
• Deactivated
• Enabled (by default for YUTAKI S Combi).
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Maximum setting temperature:
Maximum value of DHW setting temperature
permitted by the installer.
HP Control:
• To achieve the DHW setting temperature it is possible to select between two different
modes of control:
• ΔT: The most efficient way to achieve the setting temperature. The outlet water
temperature is 15°C higher than the tank temperature, increasing gradually until achieve
the target water outlet temperature (setting temperature).
• Fix: This is the fastest way to achieve setting temperature. The outlet water temperature is
set to HP Control setting. HP Control setting can be only adjuested in case HP Control is Fix.
PMEN0597 rev.1 - 06/2023
Mode:
• Standard: DHW heating operation
starts when the temperature of the
water in the tank is low enough to
start up the heat pump. DHW is
heated up with the heat pump or
the electrical heater (if electrical
heater is enabled).
• Economic (Only for YUTAKI S Combi
and H Combi): DHW heating
operation starts under same
conditions as Standard Mode
with the difference that water
temperature measurement is done
at higher tank position. Due to this
fact number of DHW operations
decrease and its duration becomes
longer which becomes more
efficiency.
• High Demand: DHW heating
operation starts if water
temperature and setting
temperature difference is larger
than differential temperature. DHW
can be heated up using the heater,
the heat pump or a combination of
both.Only available when Hot Water
Tank heater is activated (DSW4 pin
3 ON).
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