warm floor possible??

Mike T., Swampeast MO

BTW, $250 per month (on equal pay) <I>only for heating fuel</I>? Space heating and DHW? $3,000 per year for heating fuel sounds quite high for a house of that size.

Timco

Here's the deal. Customer calls and wants a warm floor in kitchen & back bedroom. Says boiler is fine. Turns out boiler is an ideal, circa 1915, 5' tall and about hugable. Supply & return out of each side. Water temp is 130*. Gravity, no circ. Rads to be removed tap off a 1.5" run about 30 & 40 feet down the run. Two pipe HW. Is there any way to use the rad taps from the main loop to take a loop for warm floors off and add a circ from that point? Cust says boiler runs great, and bill is ONLY $250 / month...which is equal pay year round. I gave a price for new boiler, but they think the old one is cute and efficient. Whatever.

Thanks, go Colts!!

Tim

Steve Garson_2

$250/month is $3000/year for heat. Must be a really big house! I suspect that they would see a reasonable ROI with a new heating system. You could run radiant off that system with the right controls, but it's time to upgrade that system.
I would pitch a new system and run the numbers to show how the cost of borrowing will likely result in either a break-even or save money.

Timco

Actually, house is only 1900 sq' or so. I pitched a new system, but do not like to push. I will pitch the numbers, but they (two ladies) think their old boiler is really cute...I would use a taco control with a grund 15-58 pushing two loops. I never did see an exp tank, but assume it's in the attic. Must be one somewhere. Any one know off hand the btu / ft on 1/2" pex in wirsbo joist trac @ 130*?

Tim

Kniggit

Helped my brother

We pulled a couple of those out last year and saved one. My brother put new grates in it and is re-installing it for a wood burner now. The newest casting date on a section says some time the end of 1905. I'll post some pics when its running

K

Mike T., Swampeast MO

I have a feeling that adding a circulator to the rad branches of a gravity system would have disastrous consequences regarding flow balance in the rest of the system.

No reasonable way to get gravity circulation through a floor.

Simply converting the entire system to forced flow could well reduce the boiler temp as flow will be much greater with significantly lower delta-t.

ALH_4

maybe?

Any way to convince them to hide a mod/con somewhere and just leave the existing boiler there dead so they can look at it?

Output might be pretty close to Thermofin.

Thermofin Output