Hitachi PC-ARFH1E1 02 Manual De Instrucciones página 49

PC-ARFH1E1(02/03) FUNCTIONALITIES
Water pump configuration:
Configure the water pump of the
heat pump.
See detailed information in the
next page.
Night shift:
Reduces compressor load in order
to reduce environmental noise,
preferably at night.
See detailed information in the next
page.
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Water pump configuration
Swimming pool speed:
Selection of the % for the pump speed
when using Swimming pool.
Minimum OFF Time:
Minimum time of the water pump OFF.
• Only when Economic mode is active
(DSW)
Stop conditions:
• Standard
• Thermo OFF: The water pump
stops after Thermo OFF.
(DSW5 pin 4 ON).
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Outdoor average temperature:
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.
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).
Operation mode:
• ΔT: To control the pump speed to guarantee
the ΔT between Two and Twi.
• Fix: The water pump works at the specified
speed % at the space speed menu.
Space speed:
Selection of the % for the pump speed when fix
mode is selected.
DHW speed:
Selection of the % for the pump speed when
using DHW.
Minimum ON Time:
Minimum time of the water pump ON.
• Only when Economic mode is active (DSW)
Overrun Time:
Added operation time of water pump after
Demand OFF.