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Function
ON
longest Pipe
Length
1 2 3 4
ON
Forced Oil Return
1 2 3 4
ON
Vacuum Mode
1 2 3 4
ON
Ground source
mode
1 2 3 4
ON
Variable Water
Flow Control
Mode
1 2 3 4
ON
Water Pipe
Solenoid Valve
220V Functions
1 2 3 4
ON
Dry contact
Mode
1 2 3 4
n After operating the dip switch to set the additional function, you must reset the power of the main PCB to
reflect the changed function. (After recovering the dip switch to cancel the additional function, you must
reset the power of the main PCB to reflect the change.)
n If the dip switch is not set accurately, it can have excessive load on the product operation.
Set the dip switch properly.
SW01B Setting
5
6 7
5
6 7
5
6 7
5
6 7
5
6 7
5
6 7
5
6 7
SW02B Setting
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
ON
1 2 3 4
5
6 7
Electrical Wiring
Remark
Standard mode at shipping
factory
Use this mode when tem-
perature of circulation inlet
water is under 10°C(50°F).
(You should use an anti
freeze)
You should install the vari-
able water flow valve con-
trol kit before using this
mode
For water pipe Solenoid
Valve 220V power
Installation Manual 63
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