Backyard Aquaponics
A place to discuss aquaponics

So I'm getting ready to see if this multi fuel heater will work. The plans are to hear my fish house and RAS with it. I plan on venting the exhaust to the outside, and was wondering if there was a potential problem with the heater using up oxygen needed for the fish?

Coach,

Are you not planning on ducting in outside air to feed the heater? If you are there should be plenty of oxygen left for the fish.

No,I was only planning on venting the exhaust outside. There is no place to attach venting for the burn chamber. I know the fire will consume oxygen, just not sure how much and if it could pose a problem over a 12_ /14 hour period.

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One heater GH heater had the heater and exhaust at opposite ends, utilizing a uninsulated tube that radiated heat, minimizing heat waste..
I imagine the issue is getting the slope right so that the exhaust does just that..

A thought worth considering... suck air from outside via a copper pipe wrapped around the vent, thus sending hot and fresh air to the FTs....
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Coach,

You could always put your air pumps outside and run them through the wall. or make a way for them to be able to be switched to outside air. IE large pipe with a ball valve. You could shut it when not needed and open if it was. Providing your FTs outside air just incase.

Since most large air pumps create heat - sometimes enough to melt plastic air tubing, I don't think heating up air pump input air would be good for the life of the pump.

Does the heater heat by convection or radiation?
You are going to have to have a fresh air source even if you did not have the heater, with the heater it just means you will need more.
Of course you could always build a small outhouse and use a fan to blow air across the heat exchange area, ducted so it does not interfere with the heaters air intake and exhaust.

Fairly obviously, the pump would be B4 the heater, and perhaps silicon tube would be best from the heater to the stones..
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good questions, I am still wrapping my head around Floridians needing heat. we recently installed a new furnace in a modular home. I was surprised to learn the fresh air intake was provided via a double wall vertical vent pipe. the center pipe being exhaust. I don't know why, but I am fascinated by that. Also our new wood burner uses a reburner, another fascinating technology. This device uses convection to draw fresh air in from the bottom of the stove, which I assume is in a similar fashion to a rocket stove, combines with exhaust gases forcing the gases over the top of the fire to reburn any waste fuel before it exits via the exhaust pipe. Anyhow, can you figure out where the fresh air inlet is for the multi-fuel heater? Surely it is under it somewhere. Place the whole heater on a tray made of two-byfours with a pipe equal volume to the exhaust in the box. I don't know I'm just spit ballin'

It's a convection type heater. No easy way to route the intake or exhaust side of the heating portion. The exhaust has a 6" duct to plumb outside. I guess the easiest solution would be to route the intake of the regen blower outside to ensure a constant supply of fresh air.thanks for all the ideas.

oh shoot I hadn't realized the exhaust needed venting as well, that is a boggle. Anyway to use it with a heat exchanger? Like boiling water?

Not sure boss. It's possible, but not easy. I'm going to hear the entire fh, so not worried about heating the water.

let me go back and look at the heater pics and I'll see if there is a way to set up a heat exchanger

Lanair what's the model # ?

L-55E/ L-55FA is the model boss