4 ms·
Do you even need a switch? In a normal cosed system (so no additional storage etc, but even then it's usually closed I think), cold water is fetched by the boil
by stinos 4y ago
Do you even need a switch? In a normal cosed system (so no additional storage etc, but even then it's usually closed I think), cold water is fetched by the boiler to replenish the hot water which goes out when you're taking a shower. Small amount of time later the drain gets warmer, so it starts heating the copper tubes, through which the incoming water is flowing hence that gets warmer. And hence less work to do by the boiler.
- Arelius 4y agoI think it depends on the details of the install, if you can install it directly in line of the cold line input and the boiler, I think that works fine. But I think instead often the heat recovery is installed somewhere in-line after the boiler, to make piping easier, but it makes heat management obviously more complicated.