Thema "100-W Pump too slow" in Gas https://community.viessmann.de/t5/Gas/100-W-Pump-too-slow/m-p/206844#M64892 <P>Hi, I have a 100-w but the pump does not provide enough circulation with microbore system to heat rads, takes VERY long time to warm up - pump max setting already set to 100%, how can I increase pump MIN setting?</P><P>&nbsp;</P><P>Thanks for help</P> Thu, 23 Dec 2021 12:21:19 GMT RDX-USer 2021-12-23T12:21:19Z 100-W Pump too slow https://community.viessmann.de/t5/Gas/100-W-Pump-too-slow/m-p/206844#M64892 <P>Hi, I have a 100-w but the pump does not provide enough circulation with microbore system to heat rads, takes VERY long time to warm up - pump max setting already set to 100%, how can I increase pump MIN setting?</P><P>&nbsp;</P><P>Thanks for help</P> Thu, 23 Dec 2021 12:21:19 GMT https://community.viessmann.de/t5/Gas/100-W-Pump-too-slow/m-p/206844#M64892 RDX-USer 2021-12-23T12:21:19Z