Personnel Qualifications; Description Of The Pump; Type Key; Technical Data - Wilo Yonos MAXO Installation And Operating Instructions Manual

1.4

Personnel qualifications

ƒ
The product must be operated by persons who are instructed
on how the complete system functions.
ƒ
Installation/dismantling work: The installation/dismantling
must be carried out by a qualified technician who is trained in
the use of the necessary tools and fixation materials.
ƒ
Electrical work: Electrical work must be performed by a quali-
fied electrician.
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 in the single or twin-head pump version
with flange or threaded pipe union is a glandless pump with per-
manent magnet rotor and integrated differential pressure control.
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-D 32/0.5-11
Yonos MAXO Pump designation
Installation and operating instructions Wilo-Yonos MAXO /-D/-Z
Example: Yonos MAXO-D 32/0.5-11
Single pump (without code letter)
-D Twin-head pump
-Z Single pump for domestic hot water circula-
tion systems
32 Flange connection DN 32
0.5-11 0.5: Minimum delivery head in m
11: Maximum delivery head in m
at Q = 0 m³/h
2.2

Technical data

➜ Fig. 3a and 3b
For further instructions see rating plate and catalogue.
2.3

Min. inlet pressure

Nominal dia-
meter
-20 °C to +50 °C
0 °C to +50 °C
RP 1 0.3 bar
RP 1¼ 0.3 bar
DN 32 0.3 bar
DN 40 0.5 bar
DN 50 0.5 bar
DN 65 0.7 bar
Fluid temperature
up to +95 °C up to +110 °C
1)
1.0 bar 1.6 bar
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
19