Harmon 360 Boiler

eastcoastspeed · Post by **eastcoastspeed** » Thu. Oct. 30, 2008 8:56 pm

im new to this I just picked up my new Harman 360 boiler but I have a few questions
first I built a small buiding 10x14 for it and so I can build a bin in there too im goin to tie it into my oil fired boiler and heating my shop witch is about 3000sq ft the heat is in the floor I know I need to keep the temp about 120 goin into the floor but will I be able to get it that low with out the fire goin out . will I have to put some kind of loop on it to knock some temp down when its not callin for heat in the shop . right now im still on oil and plan stay on it when the outside temps go from 30 over nite to 50 during the day. the water temp goin into the floor right now is around 120 and about 70 on the return thanks

Blackdiamonddoug · Post by **Blackdiamonddoug** » Fri. Oct. 31, 2008 10:35 am

you can use a mixing valve that takes your return water mixes it with the supply water to achieve the 120 degrees
BDD

eastcoastspeed · Post by **eastcoastspeed** » Fri. Oct. 31, 2008 8:01 pm

but wont I have to get rid of the excess

LsFarm · Post by **LsFarm** » Fri. Oct. 31, 2008 8:34 pm

No, there is a loop of hot water from and returning to your boiler,, and the loop in the radiant floor . The mixing valve only takes as much hot water from the boiler's loop as needed to keep the radiant loop at your desired temperature..
this is a pretty simplistic explaination, but it gets the idea across.

Greg L