Wiring pump to thermostat?

eamon11

hi,

when wiring a burner should the pump be wired off the stat also? ie the pump kicks in only when the burner is actually running as opposed to pump running all the time even when burner is in cycle mode.

thanks a lot

Billy Bunting

It would depend on the boiler, some have pump overruns.

What type of boiler are you talking ??

eamon11

a very old firebird 90

Billy Bunting

Its more advisable to take the pump off the time and the burner off the stat.

eamon11

thanks billy

meercat

agree with billy but just to add
wire the pump to a pipe stat
then the pump will only run when the water in the system is warm
also the pump will over run when the heating shuts off ,thus still heating the rads(hot water)and preventing high limit stat from activating

eamon11

thanks meercat,

how near the boiler should I place the pipe stat and what temp setting?

Thanks

DGOBS

+1 meercat,

Place the pipe stat on the flow pipe as close to the boiler as possible, and set to between 55-60 deg, if you set it less you will be at risk of condensation in the boiler which will attack the and rot the boiler

meercat

DGOBS wrote: »

+1 meercat,

Place the pipe stat on the flow pipe as close to the boiler as possible, and set to between 55-60 deg, if you set it less you will be at risk of condensation in the boiler which will attack the and rot the boiler

+1 dgobs