Operating instrutions
Inlet pressure
fluid
temperature
< 75 °C
0.05 bar 0.005 MPa 0.5 m
75 °C - 90 °C
0.3 bar
90 °C - 110 °C
1.1 bar
Caution!
Unpermitted pumping media can destroy the pump and cause personal injury.
Observe the manufacturer's information and safety data sheets!
5.2
Scope of delivery
• Original installation and operating instructions
• Pump
• 2 flat gaskets
• insulation
• Pump plug
6 Description of the Pump
In an average household 10 to 20% of the power consumption is caused by traditional standard
pumps. With the HE light pump series, we have developed a circulation pump which indicates
an energy efficiency index ≤ 0.20. As a result of the employment of the HE light, energy con-
sumption can be lowered to approx. 80% with respect to a traditional circulation pump. The hy-
draulic performance can be held almost similar with respect to standard pumps.
The pump performance adapts to the actual requirement of the system because it
works according to the proportional-pressure method.
7 Pump adjustment and supply capacity
Description of the operating elements
7.1
The key
All functions of the pumps are controllable with only one key. Dependent on the
length of time the key is held pressed, the key activates different functions.
• Short key pressing (< 3 sec.):
• Long key pressing ( 8 - 13 sec.): Bleeding program
26
WITA HE light 40-XX | 60-XX
Minimum inlet pressure
0.03 MPa
3.0 m
0.11 MPa
11.0 m
Characteristic curve selection
Permissible range of application
Temperature range
at maximum
ambient temperature
25 °C
40 °C
Permissible fluid
temperature
5 °C to 110 °C
5 °C to 95 °C
Note