Hitachi PC-ARFH1E - Heat Pump Configuration

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PMEN0602 rev.0 - 05/2023
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MENU
PC-ARFH1E FUNCTIONALITIES
1.8.2.8 Heat Pump conguraon
Water pump conguraon:
Congure the water pump of
the heat pump.
See detailed informaon in
the next page.
Night shi:
Reduces compressor load in
order to reduce environmental
noise, preferably at night.
See detailed informaon in the
next page.
Minimum ON me: In order to reduce a
possible compressor damage, demand ON cycles
can be reduced by determining the me that
must pass before accepng new Demand OFF.
Minimum OFF me: In order to reduce a
possible compressor damage, demand OFF
cycles can be reduced by determining the me
that must pass before accepng new Demand
ON.
Seizure protecon: The pump seizure
protecon funcon prevents scking
of components due to long periods of
inacvity, by running the components
during a short period every week. Mixing
valves and pumps are fully opened and
then fully closed (me depends on Mixing
valve Run Time Factor).
Outdoor average temperature:
OTC average is used to neutralise the eect of
occasional temperature variaons.
The average value of outdoor temperature
sampled over a selected period (between 1 and
24 hours) is used for the calculaon of weather-
dependent set point temperature.
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