Hitachi ADVANCED COLOR PC-ARFH2E Manuel D'installation Et D'utilisation page 97

1.18.8 Heat Pump configuration
Night shift:
(Not available for YUTAKI Cascade Controller). Reduces compressor load in order to reduce
environmental noise, preferably at night. See detailed information in the next page.
Water pump configuration:
Configure the water pump of the heat pump. See detailed information in the next page.
Outdoor average timer:
OTC average is used to neutralise the effect of occasional temperature variations. The average
value of outdoor temperature sampled over a selected period (between 1 and 24 hours) is used
for the calculation of weather-dependent set point temperature.
PMEN0597 rev.1 - 06/2023
Minimum ON time: In order to reduce a
possible compressor damage, demand ON
cycles can be reduced by determining the
time that must pass before accepting new
Demand OFF.
Minimum OFF time: In order to reduce a
possible compressor damage, demand OFF
cycles can be reduced by determining the time
that must pass before accepting new Demand
ON.
Seizure protection:
The pump seizure protection function
prevents sticking of components due
to long periods of inactivity, by running
the components during a short period
every week. Mixing valves and pumps are
fully opened and then fully closed (time
depends on Mixing valve Run Time Factor).
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