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[Wittecustom]

We bought a wood doctor he 5000 at an auction recently. There wasn't any type of owners manual or info with it (normal when buying from an auction).  Got it set up and running with no problems. Now the problem is getting the water temp up.  I've cleaned everything out. It gets up to temp for a short period of time. Everything seems to function right for a couple hours then it cools off and won't warm up. I have to put wood in about every 6 hours.  When it 40 degrees out it works great. At 0 it only heats the shop up to 50. It's a new building that is over insulated. 1800 square feet so the building size isn't the issue.   

At 0 degrees out the water temp in the furnace is only 90. Not sure what's not working or what to change anymore. Does anyone know what to do to get and keep the water temp up?

[Sprinter]

Could be too much water flow, from circulator running too fast. Burn controls not keeping up. Several things. Need a lot more info on temps and exchangers, pipe size and run length. To give you any accurate help.

What's the storage in gallons and btu rating per hour? 1 GPM of 180 degree water gives off 10,000 btu per hour at 20 degree drop.
So a 25x25 shop with air handler of 75kbtu needs 7.5gpm of 180 water supply from a 1.25" pex pipe to work for example.

[baldwin racing]

We bought a wood doctor he 5000 at an auction recently. There wasn't any type of owners manual or info with it (normal when buying from an auction).  Got it set up and running with no problems. Now the problem is getting the water temp up.  I've cleaned everything out. It gets up to temp for a short period of time. Everything seems to function right for a couple hours then it cools off and won't warm up. I have to put wood in about every 6 hours.  When it 40 degrees out it works great. At 0 it only heats the shop up to 50. It's a new building that is over insulated. 1800 square feet so the building size isn't the issue.   

At 0 degrees out the water temp in the furnace is only 90. Not sure what's not working or what to change anymore. Does anyone know what to do to get and keep the water temp up?

is the fan working correctly or is it shot and over heating and shutting down? is the sylinoid working good....if it has one?. also is the chimney all clean I have seen it when creosote builds at the top of the pipe because of a cap (with screens) that is plugging off chimney....there for boiler not going to heat up...or keep up to demand? is your wood wet and green? it all takes a toll....just some idea to look into....hope this helps
Kelly

[hoardac]

What do you have for insulated piping? Is the boiler water level staying the same? What type of heat exchanger do you have is it big enough?  Do you have a way to see the temp coming into the building?