Mitsubishi Electric CAHV-R450YA-HPB Installation & Operation Manual page 38

(7) Remote water temperature setting input signal type
By setting SW5-7 to ON, external analog signals can be used to set the water temperatures.
Analog input type can be selected from the following four types:
"0": 4-20 mA
"1": 0-10 V
"2": 1-5 V
"3": 2-10 V
Select item code 21 to set the type of analog input signal to be used to set the water temperature from a remote
location.
Setting procedures
Set the dip switches on the circuit board as follows to change the settings.
Step 1
Set dip switches SW5, SW6,
SW501-1, and SW501-2.
4-20 mA
0-10 V
1-5 V
2-10 V
Switch settings
Step 2
Select the item to be set with
push switch SWP3.
Select the type of analog input signal to be used to set the water temperature from a remote location.
Step 3
Change the values with push
switches SWP1 (↑) or SWP2 (↓).
Press push switch SWP3 to select the item code.
Change the values with push switches SWP1 and SWP2.
Until the changed values are saved, the values will blink.
Items that can be set
Water temperature
setting input signal type
* 0: 4-20 mA, 1: 0-10 V, 2: 1-5 V, 3: 2-10 V
Step 4
Press push switch SWP1 to save
the changed value.
Press SWP3 once within one minute of changing the settings to save the change.
When 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.
SW501-1 SW501-2
ON ON
OFF OFF
OFF ON
OFF OFF
SW5
10 5
OFF OFF
Item Initial
Incre-
code value
ments
21 0
6 7
OFF OFF
Setting
Lower Upper
limit limit
1 0 3
38
SW6
8 9
OFF ON
Setting change from
an optional remote
controller
Not possible
10
OFF