2) SCV-100EA, SCV-120EA, SCV-140EA, SCV-160EA
a. Additional pump
1
2
Additional pump
L
N
220-240V
220-240V
L
N
A1
A2
AC contactor
Main control board
āPUMP2ā terminal only provides passive switching signal.
Additional water pump must be controlled by the AC contactor.
b. Remote alarm
3
4
Main control board
Remote alarm terminal only provides passive switching signal.
Current passing through the terminal interface should less than 1.5A, otherwise please use AC contactor to
control load indirectly.
c. Remote shutdown
5
6
SWITCH
If switch is closed, the unit will be stopped forcibly.
Under this circumstance, anti-frozen protection and other protection functions are still effective.
If switch breaks, unit can run normally according settings.
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