Wilo Yonos PARA: Technical data
20. Pompe de circulation - le groupe de relèvement de retour  
Contact information
(accessoire)
Nominal width of connection
25   threading 1 1/2“
Pump housing length
130 mm length
Customer Control Interface
RKA 
Red Knob for:
 - Delta-P variable
 - Air venting
 - Delta-P constant
  Yonos PARA  RS   25  /6 - RKA         M        130
Pump housing
RS   Inline cast iron circulator
Max height at 0 flow
6   Equivalent TEC/6
Electrical
M   Connector middle
Fig. 1
If you need further information, please contact your local Wilo representatives or visit our website www.wilo.com
Vincent FLEURIER
Sales & Marketing Director
T: +33 2 48 81 62 74 [email protected]
Pierre BEQUET
Key Account Manager
T : +33 2 48 81 62 85 [email protected]
Robert CARRE
Key Account Manager France & Spain
T: +33 2 48 81 62 72 [email protected]
Dario FRAZZA
Key Account Manager Italy
T: +39 335 762 6181 [email protected]
Thomas MERSCHEIM
Key Account Manager Germany
T: +49 172 352 3933 [email protected]
Wilo Yonos PARA and the ErP directive Wilo Yonos PARA: Red Knob & PWM versions Applications and product benefits
T: +33 2 48 81 62 25 [email protected]
The market for glandless circulation pumps will be significantly changed by new European guidelines. In the 
Wilo Yonos PARA and the ErP directive
The directive (2009/125/EC), which came into force in 
2009, focuses on what are referred to as energy-related 
Yonos PARA: Red Knob
Wilo Yonos PARA: Red Knob & PWM versions
Wilo Yonos PARA: Red Knob & PWM versions
Wilo Yonos PARA: Red Knob & PWM versions
Δ Pv
The market for glandless circulation pumps will be 
The market for glandless circulation pumps will be 
The market for glandless circulation pumps will be significantly changed by new European guidelines. In the next few years «energy guzzlers» will be systematically banned from the market in the EU 27 by the ErP directive. 
2009, focuses on what are referred to as energy-related products, including also all glandless circulation pumps. 
Today,  in  many  EU  countries,  exclusively  circulation pumps  without  speed  control  have  been  used  to  date. 
However, these have an enormous energy consumption. 
In  contrast,  considerable  potential  savings  and 
Efficiency pumps due to their particularly low electricity consumption.  According  to  the  European  Commission, the time of the third implementation level in 2020. This of  glandless  pumps  to  be  saved  throughout  Europe  by the time of the third implementation level in 2020. This 
Therefore  you  should  think  already  today  about  High 
Efficiency pumps for upcoming projects. After all you are 
Therefore  you  should  think  already  today  about  High 
Efficiency pumps for upcoming projects. After all you are 
RKC
Get  ready  for  High  Efficiency  with  the  Yonos  PARA 
Get  ready  for  High  Efficiency  with  the  Yonos  PARA circulation pumps.
Red Knob for  
Δ-P variable,  
Yonos PARA: Red Knob
RKC
RKC:  
Red Knob for  
Δ-P variable,  
Minimum speed, 
Minimum speed, 
RKC
RKA:  
RKA
Red Knob for  
Δ-P variable,  
Δ-P variable,  
Air venting,  
RKA
RKA:  
Red Knob for  
Δ-P variable,  
Air venting,  
RKA:  
RKA
Red Knob for  
Δ-P variable,  
Air venting,  la pompe
Δ Pv
Δ Pc
Constant speed
Fig. 2
Δ Pc
Δ Pv
Δ Pc
Δ Pc
Réglage recommandé pour 
Constant speed
Fig. 3
PWM
Heating, solar (ST) & geothermal (GT) applications
Sales Manager UK
Applications and product benefits
“Best-in-class” High Efficiency pump of the market
Applications and product benefits
Applications and product benefits
Heating, solar (ST) & geothermal (GT) applications
Heating, solar (ST) & geothermal (GT) applications
WILO INTEC
Unique LED user interface
T: +33 2 48 81 62 62
“Best-in-class” High Efficiency pump of the market
Inrush current peak less than 3A 
Self-protecting modes 
Designed for optimised integration 
Water temperature range: -10°C to 110°C 
Ambient temperature range: 0°C to 70°C 
Self controlled pump (Red Knob) or externally controlled (PWM signal) controlled (PWM signal) 
Stand-by consumption less than 1W
Stand-by consumption less than 1W
Wide range of hydraulics
Wide range of hydraulics
Wide range of cast iron and composite housings
Wide range of cast iron and composite housings
Yonos PARA: PWM version
19
EEI = Energy Efficiency Index in accordance with the ordinance (EC) 641/2009 of the 
EU Commission (determined by comparing the various power consumptions of a load profile with an average reference pump).
Wilo Yonos PARA:  
The new standard in High Efficiency
Division Circulators
HVAC OEM Competence Centre
PWM
PWM
EEI = Energy Efficiency Index in accordance with the ordinance (EC) 641/2009 of the 
EU Commission (determined by comparing the various power consumptions of a load 
EEI = Energy Efficiency Index in accordance with the ordinance (EC) 641/2009 of the 
EEI = Energy Efficiency Index in accordance with the ordinance (EC) 641/2009 of the 
EU Commission (determined by comparing the various power consumptions of a load