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UNIT CONTROLLER
7.13.4.6 Complementary Heating configuration
Solar combination:
The solar combination will enable you to heat
up your domestic water by means of the sun
whenever the sun is available.
•
Set input 4, output 4 and sensor (see
section
"7.13.4.10 Inputs, Outputs and
Sensors
configuration").
•
Deactivated: No solar Kit is installed.
Input Demand: Alternative DHW tank
•
operation is done by solar system or
YUTAKI unit. Solar input can disable DHW operations done by YUTAKI unit.
•
DHW Hysteresis (OFF, 35 ~ 240 min).
•
DHW Maximum Time (5 ~240 min).
•
Total Control: YUTAKI units controls the solar operation for the system,
based on different temperatures: DHWT is heated by either the hot water
that comes from the solar panels or the hot water that comes from the heat
pump, depending on the solar temperature. See detailed information in
"Solar combination - Total
control".
Electrical heater
Proportional band:
•
Control to determine how fast setting
temperature is going to be reached.
Higher values imply fast achievement
of water setting point and therefore
higher utilization of heater.
Reset factor:
•
Used to guarantee setting
temperature achievement without
surpassing its value. Higher values
imply less utilization of heater.
Waiting time:
•
Delay time to start Electric Heater
in case all conditions allow Electric
Heater to start after HP has been
started. Only in case of Backup option.
Maximum heater step:
(Only in case of Backup option).
•
To limit the maximum heater step it
can be switched ON regardless of
the real Heater demand.
92
PMML0575 rev.1 - 09/2021
Heating Source:
•
HP Only
•
HP + Heater
•
HP + Boiler
•
HP + Heater + Boiler (Only for
YUTAKI S and YUTAKI S COMBI)
Electrical heater: See detailed information in
"Electrical heater".
Boiler combination: Boiler will only operate
if unit is in Space Heating or Hot Sanitary
Water modes. It will always be Deactivated in
any other mode (Swimming Pool and Cooling
mode). Set output 3 and sensor 1 for boiler (see
section
"7.13.4.10 Inputs, Outputs and Sensors
configuration").
See detailed information in
Operation:
Starting: Space Heating electric Heater is switched ON in
•
case of low water temperature and low ambient temperature
to provide extra capacity to HP.
•
Backup: Space Heating 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
option.
Supply setting offset:
•
Setting offset for electric Heater. Higher values imply earlier
stoppage of electric heater and vice versa. Only in case of
Backup option.
Inter stage time:
•
Time of Electric Heater phase overlapping when there is
switch ON/OFF transition from/to phase 1 to/from phase 2.
Only in case of Backup option.
"Boiler combination".
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