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(2) Interface (I/F) Option Setting mode
1
Stop the unit by pressing the [
ON/OFF]
I
button.
2
To enter the interface (I/F) option setting, press the [INITIAL SETTING (
)]
K
button for three seconds or longer. (1. or 2. will be displayed.)
*
Depending on the model of the unit to connect, the “Interface (I/F) Option Setting mode” may not be available. In such case, the screen transitions to
the unit stop screen after the display of the error.
3
To select an interface (I/F) option setting 1. or 2., press the [Mode (Return)]
E
button.
*
The available settings differ depending on the model of the unit to connect.
4
To switch the upper/lower limit value display, press the [
ON/OFF]
D
button.
5
To set the upper/lower limit value, press the [
TEMP. (
) or (
)]
F
(setting temperature) button.
•
The adjustment range for both the upper and lower limit values is -20°C (-4°F) to 90°C (194°F).
6
To cancel the interface (I/F) option setting, press the [INITIAL SETTING (
)]
K
button for three seconds or longer.
Alternatively, press the [
ON/OFF]
I
button.
A
Heating system
Lower limit value setting: Defines the “4 mA/0 V” input as the “water temperature
1
°C” of the Heating, Hot Water,
and Anti-freeze modes.
Upper limit value setting: Defines the “20 mA/10 V” input as the “water temperature
2
°C” of the Heating, Hot
Water, and Anti-freeze modes.
B
Cooling system
Lower limit value setting: Defines the “4 mA/0 V” input as the “water temperature
3
°C” of the of the Cooling
mode.
Upper limit value setting: Defines the “20 mA/10 V” input as the “water temperature
4
°C” of the Cooling mode.
The upper and lower limit values for the “water temperature switching by analog input (4-20 mA/0-10 V)”
used by the interface (I/F) can be set. Change the setting when needed.
1
Lower limit
value
display
3
Lower limit
value
display
2
Upper limit
value
display
4
Upper limit
value
display
1. Interface (I/F) option setting
Heating system
2. Interface (I/F) option setting
Cooling system
