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56 | WATER CIRCUIT
MUL
TI V W
ater Mini Unit Engineering Manual
WATER CIRCUIT INSTALLATION
Variable Water Flow Control Kit (Required Accessory)
Variable Water Flow Control Kit DIP Switch Settings
Using ‘SWDIP’, select the control function using the DIP switches as described below.
• After the DIP switch is changed, the reset switch must be pressed to reflect the setting.
• Before operating the water source unit, check the water flow rate and the PCB voltage signal.
• Minimum flow rate range is 50%; Reference flow rate: 4.4-ton - 15.9 gpm.) When the Variable Water Flow Control kit is also installed, set
the flow switch minimum flow rate to 40% of the nominal flow rate instead of 50%. If the flow rate is lower, it will damage the water source
unit.
ON
L1 2 3 4
OFF
Default is L1: ON, L2: OFF.
Table 24: Output Signal Setting.
DIP Switch Setting
Function
Control signal : DC 0V(OFF), DC 8~10V(ON)
Control signal : DC 0V(OFF), DC 6~10V(ON)
Control signal : DC 0V(OFF), DC 4~10V(ON)
Default status
Control signal : DC 0V(OFF), DC 2~10V(ON)
DIP Switch Setting
Function
RS-485 communication function enable
RS-485 communication function disable
ON
L1 2 3 4
ON
L1 2 3 4
OFF
OFF
ON
L1 2 3 4
ON
L1 2 3 4
ON
L1 2 3 4
ON
L1 2 3 4
OFF
OFF
OFF
OFF
Figure 30: DIP Switch Setting.
Table 25: RS-485 Communication Function Setting.
