Definition of "qualified electrician"
A qualified electrician is a person with appropriate technical educa-
tion, knowledge and experience who can identify and prevent elec-
trical hazards.
2
Description of the pump
The high-efficiency pump Wilo-Yonos MAXO-Z in the single pump
version with flange or threaded pipe union is a glandless pump with
a permanent magnet rotor and integrated differential pressure con-
trol. The choice of material of the pumps corresponds to the state
of the art, taking into the account the guidelines of the German En-
vironment Agency (UBA).
Power limit
The pump is fitted with a power-limiting function which prevents
overload. This may have an operational influence on the delivery
rate.
2.1
Type key
Example: Yonos MAXO-Z 40/0.5-12
Pump designation
Yonos MAXO
Single pump for domestic hot water circulation
‐Z
systems
Flange connection DN 40
40
0.5: Minimum delivery head in m
0.5-12
12: Maximum delivery head in m
Installation and operating instructions Wilo-Yonos MAXO-Z
Example: Yonos MAXO-Z 40/0.5-12
at Q = 0 m³/h
2.2
Technical data
➜ Fig. 3
For further instructions see rating plate and catalogue.
2.3
Min. inlet pressure
Nominal dia-
meter
0 to +50 °C
0.3 bar
RP 1
0.3 bar
RP 1¼
0.5 bar
DN 40
0.5 bar
DN 50
0.7 bar
DN 65
NOTICE
Effective up to 300 m above sea-level. For higher
positions +0.01 bar/100 m.
Fluid temperature
up to +95 °C
up to +110 °C
1.0 bar
1.6 bar
1.0 bar
1.6 bar
1.2 bar
1.8 bar
1.2 bar
1.8 bar
1.5 bar
2.3 bar
en
15