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5. Wilo-Para iPWM1 Pump
5.1. General Info
The Wilo Para 25/8 iPWM1 is a wet running circulation
pump. The pump speed is controlled by the PWM signal.
When the PWM signal is disconnected, the pump runs at its
maximum speed. The operating status and possible faults of
the pump are indicated by LEDs directly on the pump. The
pump is able to send the current flowrate electronically to an
external controller. The controller must be equipped with an
iPWM read input and a flow calculation function.
The high efficiency circulation pumps of the PARA iPWM1
series are used exclusively for the circulation of liquids in
hot water heating systems. Operating the pump in other
systems or in systems containing too little water, air bubbles
or not pressurized can lead to its rapid destruction.
5.2. Permitted and Prohibited Pump Positions
Permitted Pump Station positions
Prohibited Pump Station positions
5.3. Pump Wiring
The pump must be wired / disconnected by a qualified person in compliance with EN 50110-1!
Wilo PARA 25/8 iPWM1 pump wiring
L (brown)
N (blue)
PE (yellow-green)
PWM in (brown)
PWM GND (blue)
iPWM out (black)
1.POWER SUPPLY (230 V, 50 Hz
2.CONTROL (PWM)
