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I have a small on-demand water boiler in a static caravan.
The manual states that it requires 37 - 50 mbar gas pressure.
I normally use butane gas cylinders, and the normal regulators state 30mbar maximum.
I bought a regulator that's supposed to give 37mbar*, but the boiler fails to work with either.
In fact, it lights, but only after a small delay... at which point it ignites the gas that's built up then immediately goes out.
a big "whoof" and a visible flash of flame around the boiler is the best way I can describe it.
Oddly, it was working fine on a nearly-empty gas bottle, but then stopped working because it became full empty. -- that was with a standard 30mbar regulator.
Now, whether I use the 37mbar or the 30mbar regulator it does the same thing.
Anyway.... I figured it would be useful to be able to figure out what gas pressure is actually reaching the boiler.
so I bought a gauge.
assuming I should get an accurate reading if I just connect the gauge directly onto the regulator, I was surprised to find I get barely 0.2mbar.
What wrong assumptions am I making here?
considering the fact that it seemed to work ok on a nearly empty gas bottle i'm suspecting that maybe it's actually getting too much gas.
It's a bit complicated (for my brain anyway) because the water inlet pressure operates the gas valve to some extent as well.
[ *actually 37mbar+ because it's supposed to be adjustable ]
The manual states that it requires 37 - 50 mbar gas pressure.
I normally use butane gas cylinders, and the normal regulators state 30mbar maximum.
I bought a regulator that's supposed to give 37mbar*, but the boiler fails to work with either.
In fact, it lights, but only after a small delay... at which point it ignites the gas that's built up then immediately goes out.
a big "whoof" and a visible flash of flame around the boiler is the best way I can describe it.
Oddly, it was working fine on a nearly-empty gas bottle, but then stopped working because it became full empty. -- that was with a standard 30mbar regulator.
Now, whether I use the 37mbar or the 30mbar regulator it does the same thing.
Anyway.... I figured it would be useful to be able to figure out what gas pressure is actually reaching the boiler.
so I bought a gauge.
assuming I should get an accurate reading if I just connect the gauge directly onto the regulator, I was surprised to find I get barely 0.2mbar.
What wrong assumptions am I making here?
considering the fact that it seemed to work ok on a nearly empty gas bottle i'm suspecting that maybe it's actually getting too much gas.
It's a bit complicated (for my brain anyway) because the water inlet pressure operates the gas valve to some extent as well.
[ *actually 37mbar+ because it's supposed to be adjustable ]
