2007-02-10 11:32:10 · 3 answers · asked by mbshilala@verizon.net 1 in Home & Garden ➔ Maintenance & Repairs
For a residential boiler, about 12-15 PSI. Depends on how many stories your home is. Single story should be about 12.
2007-02-10 11:54:48 · answer #1 · answered by sevenofus 7 · 1⤊ 0⤋
Enough that the highest pipe still has pressure so it won't draw in air. 12 is usual. As high as 20 if there are enough stories. Your relief valve on the boiler should open up if the pressure gets too high. There is probably a valve that allows water to be added to maintain a preset pressure. This valve is adjustable, and can be overridden by lifting the little lever on it.
2007-02-10 22:02:55 · answer #2 · answered by Bryan 2 · 0⤊ 0⤋
ask expert but from a boiler person i know 50 to 60 80 you blow it pipes and all
2007-02-10 19:37:39 · answer #3 · answered by Anonymous · 0⤊ 1⤋