Re-Pressuring Boiler Water Expansion Vessel

Re-Pressuring Boiler Water Expansion Vessel by firstly pumping out all the water from it by opening the valves and pumping it up (using any pump) with air to a pressure of around 1 bar or around 15lbs. Then re-pressurizing the system with water again. The water can then expand as heated up and cooled down normally. The expansion is then taken up by the air in the vessel via a diaphragm rather than being thrown out via the pressure relief valve (PRV) and boiler shutting down due to low water pressure.

Please take care when doing and remember its at your own risk & if unsure seek experienced help as above is only general information..
Good luck

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