German
24 WILO SE 11/2012
5 Product information
5.1 Type key
1)
The values apply up to 300 m above sea level; Addition for higher altitudes: 0.01 bar/
100 m increase in height. To prevent cavitation noises, be sure to maintain the min-
imum inlet pressure at the suction port of the pump.
5.3 Scope of delivery
• Complete circulation pump
•2 flat gaskets
• Installation and operating instructions
Example: Wilo-Star-STG 25/4
Star-STG STG = solar/geothermal pump, glandless pump
25 Screwed connection 15, (Rp ½), 25 (Rp1), 30 (Rp1 ½)
/4 4 = maximum delivery head in m at Q = 0 m³/h
5.2 Technical data
Connection voltage 1 ~ 230 V ± 10%
Mains frequency 50 Hz
Protection class IP See rating plate
Max. motor speed See rating plate
Water temperatures at max. ambient tem-
perature of +40°C
-10°C to +110°C
Max. ambient temperature +40°C
Max. operating pressure 10 bar (1000 kPa)
Min. inlet pressure
1)
at +50°C/+95°C/+110°C
0.05 bar / 0.3 bar / 1.0 bar
(5 kPa / 30 kPa / 100 kPa)
Port-to-port length 130 mm / 180 mm
Variable speed control 3 stages