My first Outdoor Hydronic Furnace build....OHF

[brenndatomu]

Totally off topic, but quick question for those familiar with Polar...a coworker is looking to install a OWB and found a 2YO G2 for $8k, it sounds like the owner figured out that "free heat" still means some work, so going a different way for heating.
This seems like a pretty good deal to me...anything to watch out for on those?
Too big for heating a 2000 ft ranch (both main floor, and basement apartment) and a 3 car garage/shop?

 

[cumminstinkerer]

Totally off topic, but quick question for those familiar with Polar...a coworker is looking to install a OWB and found a 2YO G2 for $8k, it sounds like the owner figured out that "free heat" still means some work, so going a different way for heating.
This seems like a pretty good deal to me...anything to watch out for on those?
Too big for heating a 2000 ft ranch (both main floor, and basement apartment) and a 3 car garage/shop?

no sir that boiler would be good for that, and the price is good, check the turbulators to see if they are stuck, not a huge deal breaker though, check the door ceramic on the reaction chamber, it is a wear item, I'd make sure the fan functions as it should as well as the actuators for incoming air on the intake manifolds

 

[brenndatomu]

no sir that boiler would be good for that, and the price is good, check the turbulators to see if they are stuck, not a huge deal breaker though, check the door ceramic on the reaction chamber, it is a wear item, I'd make sure the fan functions as it should as well as the actuators for incoming air on the intake manifolds

Thank you sir!

 

[cumminstinkerer]

my house is around 1300 sq feet, basement is the same and also heated, not the best wall insulation but the attic is good now, I run a G2+ but I also do DHW and have the 1500 insulated storage too but I have no issues

 

[sloeffle]

I did note that most gassers I've paid notice too, pull off the top and return on the bottom. I always figured it was because the hottest burn is at the bottom of the stove. Pulling from the top and returning to the bottom theoretically should mix the temps very well.

G4000 pulls from the bottom and returns at the top. Not sure where the piping goes inside of the boiler. My guess is the supply pipe inside of the boiler pulls from the bottom of the boiler via piping inside the boiler. Both pumps run 24x7. Pump on the left is a shunt pump to help mix the water as @brenndatomu posted about.

This is a picture of the back of my boiler before I insulated the piping. Used 1" heater hose between the underground piping and the fittings so the boiler can move independently if there's frost heaving under the pad. Don't skimp out on underground piping. You should lose very little heat between the boiler and the building(s) its heating.