Hitachi YUTAKI RWM-2R1E Installation & Operation Manual page 179

UNIT CONTROLLER (PC-ARFH1E)
Smart Function
Status:
Enable or disable smart function.
Trigger type:
• Closed: Action when input is closed
• Open: Action when input is open
Start boiler:
Permission to use the boiler in case
that the system has been blocked due
to HP Block.
Start DHW Heater:
Permission to use the DHW heater in
case that the system has been blocked
due to HP Block..
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Space optional functions
Auto Heat/Cool:
Only available in units capable of heating
and cooling operation, and when cooling
operation is enabled.
Allows to set automatic switch over to
heating and cooling operation using the
same daily average outdoor temperature
of the previous day as in Heating auto ON/
OFF.
• Status: Enable or disable auto heat/
cool.
• Switch to Heat temperature: operation
switches to heating in case that the
measured outdoor temperature value is
lower than the threshold for switching to
heating.
• Switch to Cool temperature: Operation
switches to cooling in case that the
measured outdoor temperature value is
higher than the threshold for switching
to cooling.
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Smart Action:
Check that Smart Act/SG1 is set in input 5 (see
section "8.8.2.10 Inputs, Outputs and Sensors
configuration")
• HP Block: Heat Pump is forbidden in any
condition (Space Heating, Cooling, DHW) when
signal is active.
• HP Limited (A): Limitation of power consumption
up to a limit of "x" amperes (to be set up in
Limitation of amperage).
• SG Ready: The SG Grid is awarded to heat
pump series. This control technology integrates
the system in a smart grid by using two digital
inputs establishing an unidirectional connection
Service Manual for detailed information. It is
necessary to configure an input for SG2.
• DHW Block: DHW Operation is forbidden when
signal is active.
• DHW only: Heat pump operation for any
condition except DHW is forbidden when signal
is active. DHW operation is allowed normally.
Limitation by ampere:
Configure the ampere consumption limitation.
Only visible when smart action is set as HP
Limited (A).
Heating Auto On/Off:
To stop automatically stop heating operation
when the daily average outdoor temperature
of the previous day is higher than the defined
Switch-OFF temperature
• Status: Enable or disable heating auto on/
off function.
• Switch Off temperature: System is stopped
in case that the outdoor temperature is
higher than the Switch-OFF temperature.
• Switch On differential: Differential
temperature between average outdoor
temperature of the previous day and the
Switch Off temperature.