Hitachi PC-ARFH1E - Page 60

51
PMEN0602 rev.0 - 05/2023
1
MENU
PC-ARFH1E FUNCTIONALITIES
◆ Electrical heater
Operaon:
• Starng: Space Heang electric Heater is switched
ON in case of low water temperature and low
ambient temperature to provide extra capacity to HP.
• Backup: Space Heang Electric Heater is switched ON
in case of low ambient temperature (below Bivalent
point) in order to provide extra capacity to HP at
coldest days of winter.
Bivalent point:
• Electric heater is enabled to operate in case ambient
temperature goes below this value. Only in case of
Backup opon.
Supply seng oset:
• Seng oset for electric Heater. Higher values imply
earlier stoppage of electric heater and vice versa.
Only in case of Backup opon.
Inter stage me:
• Time of Electric Heater phase overlapping when there
is switch ON/OFF transion from/to phase 1 to/from
phase 2. Only in case of Backup opon.
Waing me:
• Delay me to start Electric
Heater in case all condions
allow Electric Heater to start
aer HP has been started. Only
in case of Backup opon.
Proporonal band:
• Control to determine how fast
seng temperature is going
to be reached. Higher values
imply fast achievement of water
seng point and therefore higher
ulizaon of heater.
Reset factor:
• Used to guarantee seng
temperature achievement
without surpassing its value.
Higher values imply less ulizaon
of heater.
◆ Solar combinaon - Total control
DHW maximum me:
• Maximum me YUTAKI allows to heat tank
by means Solar. At the end of this me Solar
pump is stopped regardless temperature
condions at Solar Panel.
DHW minimum me:
• Minimum Time solar operaon cannot be
performed once it has been stopped due
to DHW Maximum Time or due to low
temperature at solar panel.
DHWT maximum storage temperature:
• Maximum DHW temperature that allows
Solar operaon.
Panel minimum temperature:
• Minimum temperature of the solar Panel to
allow Solar operaon
Panel overheat temperature:
• Maximum panel operaon temperature at
which Solar Pump is set to o in case Panel
sensor reads a temperature above this value
in order to protect system.
• In case that the solar pump is stopped due
to panel overheat temperature, the YUTAKI
unit sets solar overheat output to high state
provided that this funcon has been setup
as described in “1.8.2.10 Inputs, Outputs and
Sensors conguraon”
Panel anfreeze temperature:
• Minimum Solar panel
temperature at which Solar
Pump is switched ON in order
to protect system against frost
formaon at pipes due to low
ambient temperature.
ΔT connecon:
• Allows to specify a dierence
temperature between tank and
Panel temperature to allow solar
operaon. Solar operaon is
allowed in case Panel temperature
is “ΔT connecon” ºC above tank
temperature.
ΔT disconnecon:
• Allows to specify a dierence
temperature between tank and
Panel temperature to stop solar
operaon. Solar operaon is not
allowed in case Panel temperature
is “ΔT connecon”ºC below tank
temperature