|
Pretty good viewing, he touched base on the scaling factor cleaning based on how many occupants and water hardness which is key, but don't forget thankless systems have a internal flow checks and a strainer, which means the check vavle has to be opened to allow the de scaling process to take place and the strainer pulled.
To open the check you must run the unit on full fire then turn it off manually.
.
The principal of thankless systems is incredible and versatile, you can use it for primary heating loops for baseboards while feeding a few zones for radiant heating and also have a priority call for DHW.
One of the pitfalls is you lose power you have no heat or hot water, there are way to many moving parts. Jmho.
Here's a set of four units, the one on the left is the parent and the other three are the children, they continue to communicate and take turns exercising, this will keepburn/ run time equal.
This is a commercial application each unit has two heat exchangers that modulate from 75K BTU's - 380K whit all firing at 100% they can provide 1.5 million BTU'S @ 58 gallons per minute. .
|