Tech7 Plumb

Trapeze

I have a small leak in my pressurized heating system. Having to top up every month. Nothing showing anywhere.

I have some tech7 plumb to put into it. Instructions say to run circulating pump after putting the stuff in the system (oil fired). Should the circulator be run without firing the boiler? It doesn't clarify this on the can. It only says to run circulator.

Lenar3556

I can’t answer you that, but just to suggest checking the expansion vessel(s) before you go down that road. A leaking diaphragm could give rise to the symptoms you suggest.

Trapeze

Lenar3556 wrote: »

I can’t answer you that, but just to suggest checking the expansion vessel(s) before you go down that road. A leaking diaphragm could give rise to the symptoms you suggest.

Thanks for reply. Tank is fine. Nothing from safety valve.

Sleeper12

Trapeze wrote: »

I have a small leak in my pressurized heating system. Having to top up every month. Nothing showing anywhere.

I have some tech7 plumb to put into it. Instructions say to run circulating pump after putting the stuff in the system (oil fired). Should the circulator be run without firing the boiler? It doesn't clarify this on the can. It only says to run circulator.

The instructions are telling you to run the heating system to move the chemicals around. If you knew roughly where the leak was you could shut off other rads to force the sealer in the desired area. If your plumber put in the chemicals he'd tell you to run heating system full blast for a few hours, even if this means opening windows because it's too warm. This is good stuff. I like that it also has inhibitor in it

Trapeze

Great. That's the information I needed. Thanks.