What pressure should my Ariston boiler be?
What pressure should my Ariston boiler be? Anyone can use the external filling loop to increase pressure in the system to around 1.3 bar, which is the pressure required in most Ariston boilers. What pressure should a Pressurised heating system be? between 1 and 1.5 bar When the heating system is cool, the pressure should be between 1 and 1.5 bar on the pressure gauge (the indicator needle would usually be in the green section). If pressure is below 0.5 bar (down in the red section), water has been lost from the system and must be replaced. What is the...