Wiring works
Connection guide of additional pump
Case 1) INV. pump
Connect the PWM control external type pump to PWM terminal block and power cable to the external contact terminal.
The maximum number of additional pump installation is one inverter pumps (Input power 100W).
1. Power supply (For additional INV. Pump)
B6 : Live additional pump
B1 : Neutral additional pump
2. PWM control (For additional INV. Pump only), refer to page 29
Reference (GND)
PWM signal (SIG)
• If there is wrong wiring between PWM and reference, INV. Water Pump may not work or wrong operation.
CAUTION
PWM characteristic curve
PWM input signal(%)
Max.
Speed
The additional pump should be the same type of product as the above graph.
5~16kW : GRUNDFOS UPMM 25-95 (Heating Type)
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