Trying to reinvent the wheel and need advice - http://www.hvacmechanic.com/ Forums

Original message

retrofitrehab

67.130.246.222

"Trying to reinvent the wheel and need advice" , posted Mon 20 Oct 21:02

I have a Goodman 80% efficiency Natural Gas Furnace (2 ton) 45,000 BTU, with matching A/C coil and condensor. It is only a couple of years old and I am moving, and I want to take it with me. Where I am moving natural gas is not available and I DO NOT want to convert to LP. My decision is a little radical. I have designed a solar/wood burning water system that incorporates the air handler and A/C coil but my problem lies in my back-up system/initial system. I want to replace the guts of the burner assembly with a 8kW heater coil and I want to know if the control board in the unit will be compatible. Everything I have read on says that the heater coils are universal in most of thier air handlers and I was wondering if anyone has tried to attempt this?

Replies:

TKG26

72.140.218.41

"Re(1):Trying to reinvent the wheel and need a" , posted Mon 20 Oct 22:51

Man you guys in the STATES really need the TSSA down there... This stuff scares me LOL

http://www.tssa.org/home/default.asp?loc1=home

Short answer is no, the circuit board on a GAS furnace is not designed to power coils

SIGNATURE "Always have a licensed HVAC technician perform repairs on your equipments. HVAC is not a do-it-your-self home project."

retrofitrehab

67.130.246.222

"Re(2):Trying to reinvent the wheel and need a" , posted Mon 20 Oct 23:06

Thank you for the information though can you help me a little more on direction on this website, where exactly am I suppose to be going?

I know my scenario sounds very screwy but I have had 2 engineers go over what I was doing and they signed off on it, but when it came to specifics of the equipment they fell short. So let me ask this, can I just purchase a new board? If I rip the gas guts out and put a coil in, the blower will still work the same, and the A/C is independent, then a board that matches the coil should solve my problems, correct?

I am just trying to be creative with the parts I have and trying to use a little less energy.

Houston204

98.196.66.53

"Re(3):Trying to reinvent the wheel and need a" , posted Tue 21 Oct 00:10:

You can install an 8KW Warren duct heater, with a pressure switch, on the supply side of your furnace. Configure your stat for electric heat to energize G on demand for W.

Do not gut your furnace.

"Tip of the Day" Remember to remove power first.

[this message was edited by Houston204 on Tue 21 Oct 00:11]