Hitachi YUTAKI M RASM-2VRE Instruction Manual page 31

ELECTRICAL AND CONTROL SETTINGS
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Function of DIP switches and rotary switches
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N O T E
• The mark "■" indicates the DIP switches positions.
• No mark "■" indicates pin position is not affected.
• The figures show the settings before shipment or after selection.
• "Not used" means that the pin must not be changed. A malfunction
might occur if changed.
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C A U T I O N
Before setting DIP switches, first turn the power supply OFF and then set
the position of DIP switches. If the switches are set without turning the
power supply OFF, the contents of the setting are invalid.
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DSW1: Additional setting 0
Factory setting. No setting is required.
Factory setting
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N O T E
In case of installing the "Cooling kit" accessory, set the pin 4 of DSW1 to
ON in order to enable the cooling operation.
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DSW2: Unit capacity setting
No setting is required.
2.0 HP
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DSW3: Additional setting 1
Factory setting
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DSW4: Additional setting 2
Factory setting
DHW defrost
Heater forced OFF
Unit and installation pipes antifreeze
protection
Standard / ECO water pump operation
19 PMML0506 rev.1 - 09/2019
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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 and 2 setting, the preferable
sensor for each circuit can be selected.
3.0 HP
7 8
7 8
7 8
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7 8
7 8
Electric heater or boiler emergency mode
DHW tank's heater operation
DHW 3-way valve forced ON
YUTAKI M - Remote Control Box
C A U T I O N
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
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
Auxiliary sensor instead of outdoor unit
sensor for both circuits
Use the maximum temperature value
between Two3 (boiler / heater thermistor) and
Two (water outlet thermistor) for water control
DSW6: Not used
Factory setting
(Do not change)
7 8
7 8
7 8
7 8