(1) Setting procedures
Set the dip switches on the circuit board as follows before making the settings for the items described in this section.
Step 0
Set the ON/OFF
switch (SWS1) to
OFF.
Set SWS1 to OFF from the remote controller or with the local switch.
Most settings (other than item codes 11 and 13 (water temperature setting)) cannot be
changed unless the ON/OFF setting is set to OFF. *
Step 1
Set the dip switches
SW2 and SW3.
Step 2
Select the desired
item with the push
switch SWP3.
Item codes 11, 13, 22, 23, 24, and 25 relate to water-temperature setting.
Press the push switch SWP3 to select an item code.
Press the push switches SWP1 and SWP2 to change the value of the selected item.
The value will keep blinking while it is being changed.
Step 3
Press the push
switches SWP1 (↑)
or SWP2 (↓) to
increase or
decrease the value.
Step 4
Press the push
switch SWP3 to
save the change.
Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to save the
setting.
Once the new setting is saved, the display will stop blinking and stay lit. The display will, then,
return to the item code display mode.
If SWP3 is not pressed within one minute, the change will not be saved and the display will
return to the item code display mode.
* Settings can be changed from the optional remote controller, regardless of the ON/OFF status of the operation switch.
SW2 SW3
-10 5 6 7 8 9 10
OFF OFF OFF OFF OFF ON OFF
e
* The graph below shows the relationship between C1/C3 and C2/C4.
Items that can be set
Item
code
Initial
value
Unit
Setting
Notes
Setting change from an
optional remote
controller
(PAR-W21MAA)
Increments
Lower
limit
Upper
limit
Water temp. setting A
(Heating mode)
11 60 °C 0.1°C 25 70 Possible
Water temp. setting B
(Hot water mode)
13 65 °C 0.1°C 25 70 Possible
Heating Eco mode/
Water temp. setting C1 *3
22 60 °C 0.1°C 25 70
Heating Eco mode/
Outside temp. setting C2 *3
23 0 °C 0.1°C -20 50
Heating Eco mode/
Water temp. setting C3 *3
24 35 °C 0.1°C 25 70
Heating Eco mode/
Outside temp. settingC4 *3
25 25 °C 0.1°C -20 50
Water temp.
setting
Heating Eco
Water temp.
setting C1
Heating Eco
Water temp.
setting C3
Heating Eco
Outside temp.
setting C2
Heating Eco
Outside temp.
setting C4
Outside temp.
Water temp.
setting
Heating Eco
Water temp.
setting C1
Heating Eco
Water temp.
setting C3
Outside temp.
* When the values for C2 and C4
are set to the same value.
*1 These items need not be set when only a single water temperature setting is used.
When a signal through a dry contact is used to switch between the three modes, the water temperature setting is selected as
follows.
*2 The setting ranges for the water temperature setting A, B, C1, and C3 are shown in the table below.
* When the outside temperature is -5ºC or below and the water temperature is set as follows, the unit may operate at a higher
preset temperature than the preset temperature: Outlet temperature 35ºC/Inlet temperature 30ºC.
Water-temperature control Lower limit Upper limit
Outlet-water-temperature-based control 25.0°C 70.0°C
Inlet-water-temperature-based control 25.0°C 65.0°C
*1
*1
*1
*1
Not possible
Not possible
Not possible
Not possible
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