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[slimjim]

Looking good Matt, the Magic bus and I are home if you need anything and want a reason to get out of the kitchen, not sure about your place but here at mine it's going to be a madhouse in there today!

[BIG AL]

Nice clean job hooking up your boiler. I spent a lot of time and money when I hooked my g-200 last year but it was well worth every penny spent. I put my temp probes and circulators in the house so I can watch while I stay warm And if I ever have to change a circulator it will be in my slippers.

[hondaracer2oo4]

What size tacos did you use?

[FrozenMongrel]

What size tacos did you use?

I had 2 007 F5 circ pumps from the stuff from my friend, I have several other pumps to choose from if these don't work out well, but these are the only tacos. I have almost no elevation change from the boiler to the house with only about a 50' run of logstor. In the house there are only 4 long sweep 90's each way from the heat exchanger. Should be plenty of flow from the 007 as there's very low head pressure. All of the valves and shutoff flanges are full port as well.

I'm also planning on 4 gauges near the heat exchanger so I can measure the heat transfer, I put the ones on the boiler so I can see the total system heat drop and monitor the boiler return water temps.

[FrozenMongrel]

This is the arrangement I have planned for going through the heat exchanger


The oil boiler side is going to be pex temporarily for this year until hopefully next spring when I can replumb the house to a primary secondary system.

[hondaracer2oo4]

Are you going to put temp gauges on your supply and return? 007 pump Max's out at 10 feet of head. As long as your return temps to your boiler are less than 20 delta t you are fine.

[FrozenMongrel]

Are you going to put temp gauges on your supply and return? 007 pump Max's out at 10 feet of head. As long as your return temps to your boiler are less than 20 delta t you are fine.

I'll have them on the return to the boiler and at both feed and return at the heat exchanger in the basement

[tinfoilhat2020]

Looks real good!

[FrozenMongrel]

Changed the order of gauge and drain bib, but finalized the layout of the heat exchanger and in the process of plumbing it in. Spent about 3 or 4 hours on it so far today, I'll get a couple more in before I call it a night. Should be able to get the G200 filled up tomorrow!

[coolidge]

Any chance you could get a piece of foamboard behind that exchanger?

[hondaracer2oo4]

I was thinking the same thing but if you could keep it just 1/8 inch away from the frost wall it would help immensely to not act to suck the heat out of the hx.

[FrozenMongrel]

It will have a spacer behind it to provide insulation from the concrete. Everything in that spot is tight clearances so I wasn't sure how much space I was going to have. I should have enough room to space it out with some insulation. Other than that the boiler side is now ready to fill tomorrow morning while I work on connecting the heat exchanger to the oil boiler.

[FrozenMongrel]

Boiler is filled and plumbing is connected to the oil boiler system. That side of it is only for this year hopefully as I hope to replumb the hydronic system to a primary secondary system next spring. Foam insulation behind the heat exchanger, gauges on in and out of the hx for both systems and return temp gauges on the back of the g200. Probably will give it a day to circulate then I'll pull a water sample for testing and light a fire.


One of the copper unions was leaking, one heater hose clamp I forgot to tighten, and 1 joint had to be re-soldered. That's the extent of the issues I've had so far. Really trouble free install overall. Can't wait to fire it up and see how it runs.

[FrozenMongrel]

Got the boiler fired up this morning. Took about 3 hours to get to temp, but hardly used any wood compared to when I 1st fired up the shaver last year. That has about 6 hours and 2 full fireboxes of wood. This was 1 load about halfway up the door and the firebox is much smaller than the shaver's.
It's going to take a bit to get used to not seeing smoke billowing out all day long. Full bore getting to temp was far less than when the shaver was at idle.

[MattyNH]

wow impressive post from start to finish! I like how you put the temp gauges on in your setup.