Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: Marktk on November 08, 2013, 11:44:50 AM

Title: system setup
Post by: Marktk on November 08, 2013, 11:44:50 AM
Does anyone see a problem with the having my system set up like this. Water in from boiler to sidearm on dhw then to a gas water heater(storagetank) the back to the boiler i did notice that when my floor heat turns on i will some times be returning 140-150 to the boiler. The floor heat pulls from the gas storage tank from hot and cold outlets the boile is tapped into the relief and drain outlets. 
Title: Re: system setup
Post by: hondaracer2oo4 on November 08, 2013, 03:56:20 PM
What are the entering temps from the boiler start at? If they come in at 180 and drop to 140-150 that is to much of a heat drop I believe. When I was putting my system together I believe the ideal drop is right about 20 degrees. If you are having a greater drop than that you need to move the water faster through the system. 
Title: Re: system setup
Post by: slimjim on November 08, 2013, 05:19:50 PM
Understand that what you have just created is a buffering tank and not a heat exchanger
Title: Re: system setup
Post by: Marktk on November 10, 2013, 06:14:04 AM
yes i have a buffer tank also would be used as a backup if nessasary  i have a 20 degree drop though my floor loops but when they kick in my tank drops  dramaticly for a short time
Title: Re: system setup
Post by: slimjim on November 10, 2013, 08:56:40 AM
Yes and all the ports on the tank are 3/4 inch with only thermal siphon on the sidearm to produce the heat or is there a coil in the gas fired water heater
Title: Re: system setup
Post by: Marktk on November 10, 2013, 11:43:16 AM
the tank has four opening so  the floor pump runs though two and the owb pump runs thru the other two   the side are is on my dhw 
Title: Re: system setup
Post by: slimjim on November 10, 2013, 04:23:55 PM
When you say returns of 140 -150 to the boiler, you are talking about the returns from the radiant to the tank and not the diff on the boiler loop
Title: Re: system setup
Post by: Marktk on November 13, 2013, 10:44:07 AM
Thats return to the boiler which gives me about 30 drop at boiler