Hitachi YUTAKI ATW-YCC-03 Installation And Operation Manual page 52

DSW4
Unit and installation pipes antifreeze protection
Standard / ECO water pump operation
Electric heater or boiler emergency mode
DHW tank's heater operation
!
CAUTION
• Never turn all DSW4 dip switch pins ON. If this happens, the software of the unit will be
removed.
• Never activate "Heater Forced OFF" and "Electric heater or boiler emergency mode" at the same
time.
◆ DSW5: Additional setting 3
In the cases where the outdoor unit is installed into a location where its own outdoor ambient
temperature sensor can not give a suitable temperature measurement to the system, it is available
the 2nd outdoor ambient temperature sensor as accessory. By means of DSW1&2 setting, the
preferable sensor for each circuit can be selected.
DSW5
Factory setting
Outdoor unit sensor for circuits 1 and 2.
Outdoor unit sensor for circuit 1; Auxiliary sensor for circuit 2.
Auxiliary sensor for circuit 1; Outdoor unit sensor for circuit 2.
PMEN0581 rev.2 - 04/2023
7 8
7 8
7 8
7 8
5
46