Hitachi RWM-2.5NE Instruction Manual page 25

ELECTRICAL AND CONTROL SETTINGS
5.6.2 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 2.5 HP
5.0 HP 6.0 HP
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DSW3: Additional setting 1
Setting before shipment
1-step heater for 3-phase unit
17 PMML0336B rev.1 - 03/2016
3.0 HP 4.0 HP
8.0 HP 10.0 HP
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DSW4: Additional setting 2
Setting before shipment
DHW defrost
Heater forced OFF
Unit and installation pipes antifreeze
protection
Standard / ECO water pump operation
Electric heater or boiler emergency mode
DHW tank's heater operation
DHW 3-way valve forced ON
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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.
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