Nobel Combi install

The short, fat section of piping at the tank is the key. I used 1-1/4 for that as it becomes the hydraulic separation. Size that for around 2 fps, less if possible.

A bit of a gamble on this as the tank has 3/4 ports which I increased right away.

I have run it two days now as just DHW and the piping to the manifold is staying cold. I'll know better when there is heating loads also. I only have about a 40,000 BTU/hr load on the home.

Basically each direction sees only the flow required, I've run a large version of this on a 500 gallon buffer tank in my shop. Headers were 3" for solar, wood and LP input. It has worked exactly as planned I have Quicksetters on every connection so I can see flows on every branch.

Tom said:

hot rod,

what do you think of the Nobel, I like the design, I like Lochinvar, I really like the price point, but haven't been able to walk away from the no headaches, problem free NTI Tx151c

Tom

So far so good with the Nobel, check back in a couple years. I like the US built HX and other components. It has a unique DHW module, looks Italian. I've always has great interaction with Lochinvar, support is as important as the product.

I see all the smaller boiler brands are being acquired or merged both NTI and now HTP are partially owned by the giant Ariston. Hopefully they allow the companies to thrive and respond to the US market, not the European way of doing business, which doesn't always go so well on this side of the pond.