Good looking job! It shows the advance in technology when you compare the size. But will that stoker be there in 50 years like that beast was? I don't think so. I would love to put coal in our church building but the problem is getting someone to tend it. We are a start-up church plant in a storefront and nobody heats with coal but my wife and I. And here we sit at ground zero for ant coal!
Reason for my question was I just got through installing a new to us donated 100K BTU Trane XLS80 85% efficient hot air furnace in our church. We got a sweatheart deal on the rent if we agreed to put in a heating system and do a cleanout of the building, some other maintenance, painting, repairs etc. My heat load calculations showed we needed between 60-70k BTU's. for the first floor which is 1,386 square feet. Insulated drop ceiling, four course shared brick walls, tenants on both sides with heat The walls are studded out and have peg board on them but no insulation.
I did some calculations on CFM's and decided to put in three 6 inch flex ducts with one of them T'd and supplying two registers and the other two going to their own registers. An HVAC guy who volunteered to oversee the lite off said we wouldn't get enough air flow. He said for this unit it should have been 4 independent eight inch flex ducts.
It is working just fine the way we set it up. I tested it several times this week and it brings the first floor up about 10 degrees per hour. We have the unit only firing on the first stage and the blower on low speed. We have a little room for expansion on the system once we build a Sunday School room and an office.
So far we saved $3,895 on the gas line install as the gas company ran the line to the building for free, about $750 on the unit as it was donated, and $$$$ for labor by doing everything ourselves. The HVAC guy declined to bill and said he would write off his time as a donation. The quote we got to have an HVAC company do the install with a new furnace was $7,100. So far we have about $275 in black iron pipe and fittings for the gas line, about $100 in flex ducting with ties and supports, and about $35 in misc angle iron and screws.
The real test is whether or not the ladies in the church are comfortable. That is the only true test the unit has to pass.
We will see this Sunday as it's the first Sunday since we fired it up.