Wilo Yonos MAXO User Manual

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Installation and operating instructions • Wilo-Yonos MAXO/-D/-Z • Ed.01/2022-08 27
7. Guide the cable through the cable ducts to the connection sockets.
8. Connect the wires in the correct position (Fig.XIV).
9. Close the plug and unscrew cable ducts (Fig.XV).
10. Insert the plug and fasten with screw (Fig.XVI).
11. Restore the power supply.
8 Put into operation
8.1 Venting
1. Charge the system appropriately and ventilate.
▶ The pump is self-ventilating.
8.2 Flush
CAUTION
Damage to property!
While using fluids with admixtures, property damage can occur due to the accumulation of
chemicals.
• Flush system before commissioning.
• Flush out the pump before pouring in, refilling or replacing fluid.
• Remove the pump before change in pressure flushes.
• Do not perform any chemical flushes.
8.3 Select operating mode
Fig.4: Select operating mode
Control mode Description
Variable differential pressure
Δp-v
The control changes the differential pressure setpoint to be maintained by
the pump linearly between reduced differential pressure H and H
target
.
The controlled differential pressure H decreases or increases with the flow
rate.
Constant speed
n=const.
The speed of the pump is kept at a set constant speed.

Wilo Yonos MAXO Specifications

General

Model	Yonos MAXO
Category	Water Pump
Protection Class	IPX4D
Max. Operating Pressure	10 bar
Frequency	50/60 Hz
Temperature Range	-20°C to +110°C
Energy Efficiency Index (EEI)	≤ 0.23
Application	Heating, cooling, and solar systems
Operating Modes	Constant pressure
Motor Protection	Integrated
Materials	Cast iron, stainless steel
Voltage	230 V
Ambient Temperature	Up to +40°C
Connection Size	DN 25
Power Supply	1~230 V, 3~400 V (depending on the model)