Have had the 4th engineer quoting for a replacment condensing Grant boiler.
The chap who came round last night was the first to raise the issue of heat exchanger rot.
He said, if softened water (from a normal dometic softner) in conjunction with inhibitor is used, the solution is slightly acidic, which will rot the boiler's heat exchanger very quickly. Is this true?
He suggested a sealed system (i.e. with pressure/expansion vessel) which has tank sited in the boiler housing, filled by a hose connected to normal mains tap water. I'm happy to consider this but am concerned about the additional pressure in the heating pipework and rads. What are pros and cons of this type of system?
What sort of pressure will be in the system pipework/rads?
How is any acumulating gas drained from the rads?
The chap who came round last night was the first to raise the issue of heat exchanger rot.
He said, if softened water (from a normal dometic softner) in conjunction with inhibitor is used, the solution is slightly acidic, which will rot the boiler's heat exchanger very quickly. Is this true?
He suggested a sealed system (i.e. with pressure/expansion vessel) which has tank sited in the boiler housing, filled by a hose connected to normal mains tap water. I'm happy to consider this but am concerned about the additional pressure in the heating pipework and rads. What are pros and cons of this type of system?
What sort of pressure will be in the system pipework/rads?
How is any acumulating gas drained from the rads?