The resurrection of old number 29

Congrats on getting that unit in shape to be used again Steve.
I find few things as satisfying as getting something someone else has given up on be it a boiler (in your case) or a structure (in my case) fixed & turned over to the owners.
Makes one look forward to the next (seemingly impossible) challenge.
Here's hoping the install goes well.
BTW are you drilling a new hole in the Garn for a sensor in that photo?

Funny you should mention fixing someone else's mess....that's exactly what I am doing & have been for about the last month. Retired professional that liked to DIY absolutely everything in the house.

So far every wall I have opened has been full of rodent droppings & rot....you can guess from that what his thoughts on properly sealing any structure are....disappointing to say the least.

Anyhow after all this time fixing structural things that were wrong I can finally get to the addition he hired me to build in the first place, so the 2 of them can have a nice sunroom with attached deck, out to the new hot tub, with a new entry way to the home & a 12' x 8' walk in closet for her.

So we excavate, pour footings, lay 2" ridgid foam & are ready to tube the slab, I notice that has predrilled holes in the existing floor joists so we can run tubing into the boiler room & I say thank you very much, about 5 min later one of the boys plugs in too much & trips the breaker.

I head into reset it, go to the boiler room where the panel is & there in front of me is ????????? a nat gas boiler with every run & I do mean every run done with poly B tubing! I kid you not, 1" poly B to boot. On top of that their are no isolation valves at all not a single one. Zero zone valves. Zero mixing valves. Zero low temp protection for boiler. So every zone runs at boiler temp (way too hot). There is a valve to shut off water into the boiler, a valve to shut off water out of the boiler (all of it, all zones on one valve) a switch to shut off electrical power to the boiler, a switch to shut off the circ pump that is wired to run 24/7/365 & that is it. Oh BTW I forgot to mention everything leaked, boiler & exp tank very rusty for 15 yrs, floor was soaked & had been for some time as the concrete was spawling big time, looked more like a pad I would pour at a cattle watering bowl than a finished slab.

I could feel my mouth hanging open so I forced myself to close it & turned to the elec panel.....well guess what I see there, 24 breaker panel with 100 amp main, quick glance & count has me at 45 - 50 wires coming into that panel (way overloaded) double & triple tapped...has to be. I reset the breaker & head back out to work, later in the day (after I have cooled down) I mention to him that after we are done I have a few suggestions on how he can improve his electrical & mechanical in the building. He says oh good we have been tripping breakers everyday for quite a while & I can't figure out why, & last year I had 3 zones in the floor of the home that stopped heating & I have not figured out why either. Say's he just put a clamp on tubes of the zones that were not working (in case they were leaking) & put elec space heaters in the rooms. OMG I think to myself if I get out of here before the snow flies it will be a miracle. Either that or I have finally met my match.

The first Garn I saw was one just like this. It was installed in august of 1985. You're right heaterman, it was a good idea but no one stayed around or came back to adjust air. One of the best benefits of the garn. Set it and forget it.

Great to save an old beast like #29. What is the capacity of that one? Looks like it is in between a 1500 and a 2000.

If it was frozen the capacity should increase.