Bruce Peckett wrote:
<snip>
> A pump will (usually) add cold water to the boiler, the injector (when
> you can get the bl**dy thing to lift) hot
The only reason the injected water is hot is that it was heated by some
of the steam from the boiler! If you need to lose a bit of steam
temporarily, then using an injector is a convenient way of doing it. But
not for so long that you overfill the boiler ;-)
Andrew
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