I have a outdoor boiler and it must go!!
so in my search of a new system i am looking at a multi fuel unit that can burn coal wood and waste oil all of wich i can get for almost free or in the case of coal for about $40 a ton.
as you know most boiler units ask for a btu requirement when selecting a unit and this has me stumped.
what i do know is that my greenhouse has a 20x22 exchanger with a furnace fan behind it and at night it will run almost all night straight .
my house has the same exchanger mounted in the furnace and it will run for about 15 minutes every hour on average.
my shop has another 20 x22 and it will run for 15 minutes every hour also .
they are all 100 000 btu exchangers so if i had all 3 running at the same time for 1 hour would that then mean i need 300 000 btus an hour??
so in my search of a new system i am looking at a multi fuel unit that can burn coal wood and waste oil all of wich i can get for almost free or in the case of coal for about $40 a ton.
as you know most boiler units ask for a btu requirement when selecting a unit and this has me stumped.
what i do know is that my greenhouse has a 20x22 exchanger with a furnace fan behind it and at night it will run almost all night straight .
my house has the same exchanger mounted in the furnace and it will run for about 15 minutes every hour on average.
my shop has another 20 x22 and it will run for 15 minutes every hour also .
they are all 100 000 btu exchangers so if i had all 3 running at the same time for 1 hour would that then mean i need 300 000 btus an hour??