Wilo Atmos Pico 25/1-8 high-efficiency circulator for heating systems, with a maximum head of 7.6 metres and automatic differential pressure modulation. Suitable as a replacement for 25/1-8 circulators with 180 mm length.
MAIN FEATURES
high-efficiency circulation pump with ECM electronic control and maintenance-free wet rotor
preset operating modes: variable differential pressure with three predefined curves and constant speed with three fixed stages
LED indication of the selected mode and characteristic curve
minimum power consumption of 4 W
integrated motor protection and automatic deblocking function
high starting torque for reliable operation even after long shutdowns
TECHNICAL DATA
maximum head 7.6 m
maximum flow 4.3 m³/h
power supply 1–230 V ±10 %, 50/60 Hz
nominal power 58 W
minimum speed 500 rpm
maximum speed 4800 rpm
maximum operating pressure 10 bar
liquid temperature from –10 °C to +95 °C
ambient temperature from –10 °C to +40 °C
energy efficiency index IEE =0.23
protection rating IPX2D
insulation class F
cable gland 1 x PG11
hydraulic connections G 1½ inlet and outlet
installation length 180 mm
MATERIALS
pump housing in grey cast iron
impeller in PP-GF40
shaft in stainless steel
sleeve bearings in carbon impregnated with metal
APPLICATIONS
water circulation in domestic heating systems
ideal replacement for 180 mm circulators with head up to 7.6 m
suitable for wall-hung boilers and traditional or low-temperature heating systems