With the correctly sized exp rank and a new 40 psi RV it should be fine. Max temp is 180 degrees. If there is a problem I can also drop the temp to 170
I disagree. The system was setup running with a 30 psi RV and working pressure of 15 psi. The valve was weeping at these pressures. The original expansion tank was broken and too small. I am upsizing the expansion tank and increasing the valve capacity to accommodate the 3 psi increase in...
Ok,
I called the boiler company. The maximum allowable Working pressure is 50 psi. Therefore I can replace the 30 psi relief valve with a 40 psi without any worry. I believe the expansion tank is also no good because the valve was closed and the pressure was reduced in the system. I will...
The distance would be close to 40 feet. I’m not concerned with the system pressures. I’m concerned that the boiler minimum relief capacity is 90lbs / hr. PR valves are rated in psi. I want to increase the PR valve to 40 or 50 psi. Does that violate the minimum relief capacity on the boiler...
I am working on a hydronic heating system with a Minimum relief valve capacity of 90lbs/hr. The present relief valve is 30 psi. The building is 3 stories and the boiler is in the basement making the height over 3 stories that the water must travel via pressure. Is it acceptable to upsize the...
