Compact design for install versatility

The Si 1806 is a centrifugal tank pump for gas condensing boilers.

With a 500l/h pumping capacity linked with a compact design the pump is capable of evacuating charged, high temperatures (65°C) acidic (ph >3.4) condensates from gas condensing boilers.

High discharge head

Technical details

Max flow rate1 gph
Max discharge head1 ft
Max suction head0 ft
Mains supply230V~ 50/60Hz - 90 W
Operation conditions30%: 3s ON – 7s OFF
Max condensate aciditypH > 3,4
Master pack quantity10
Safety switch 
NC 4 A resistive – 250V
Integrated, floats, (±3mm)
Thermal protection 
120°C (automatic restart)

Pump sound levels

at 3,3ft or 1m in application (dBA)<= 47
Kit contents 
One-piece centrifugal pump with tank (0.5L)
Integrated barb end check valve Ø ext. 10 mm (3/8”)
Power cable: (2m with European plug)
Safety switch cord (1m, bare ends)
5m roll of 10mm (3/8'') clear PVC tubing
Safety standards 
RoHS and WEEE directives 
Technical data sheet