Volt free vokera gas boiler

Nipex83 · Jan 14, 2015

Just wondering can anybody help me. The boiler I'm working with is a vokera verve combi boiler.
the house has a three zone programmer so hot water, first floor rads and second floor rads each controlled by a 2 port motorised valve..

the basement of the house has underfloor heating..

there is a external pump for the rad circuits but the problem I'm having is for example if I call for first floor heating how do I get the pump to turn on at the same time.. Correct me if I'm wrong but I don't have 230 volts at my boiler so in turn cannot switch my pump on..

how do I turn on the pump with a voltage free contact boiler..

Currently at at the moment my circulating pump is constantly running from another power source,, this is temporary so the pump will circulate the heat for me..

davesparks · Jan 14, 2015

Have the valves operate an 8 pin relay, this gives you two 'volt free' switches from the valves, use one to operate the boiler and one for the pump.

I assume the boiler has a LV switchlive or similar from your description, otherwise just come to it to the switch live if it's 240V

Nipex83 · Jan 15, 2015

Nipex83 said:
Just wondering can anybody help me. The boiler I'm working with is a vokera verve combi boiler.
the house has a three zone programmer so hot water, first floor rads and second floor rads each controlled by a 2 port motorised valve..

the basement of the house has underfloor heating..

there is a external pump for the rad circuits but the problem I'm having is for example if I call for first floor heating how do I get the pump to turn on at the same time.. Correct me if I'm wrong but I don't have 230 volts at my boiler so in turn cannot switch my pump on..

how do I turn on the pump with a voltage free contact boiler..

Currently at at the moment my circulating pump is constantly running from another power source,, this is temporary so the pump will circulate the heat for me..