Posted by nickj on July 27, 2001 at 10:52:15:
In Reply to: Re: Boiler water pressure posted by Harold Kestenholz - Hydronic Network on July 27, 2001 at 10:40:24:
Harold this expansion tank is called fill-troll
made by AMTROL.
According to the direction this tank has a 12 psi pressurized diagfram and a a valve which will let the city water in, if the pressure in the boiler gets to be less than 12.
At this point the pressure in the boiler (cold) is 5 PSI (not twelve) I imagine that when operating it will go up to 9.
Do you still think I should not refill the tank to 12 PSI as set at the factory?
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