Is anyone using a hot water tank, instant (tankless) hot water heater and recirculating through recovery? This is similar to how they are doing the I/O extractor. I looked up and crunched some numbers on some cheap ass Rheem units and it’s adding up.
Just looking to see if anyone has home brewed this type of recovery.
If you’re going to use a tankless heater on recirc, make sure that you’ve got one that is designed to handle recirc - many cheaper home grade ones are not, and apparently get cranky if you feed them hot water.
Most commercial grade ones should be just fine. I’ve got the Rheem Commercial series on the BOM for a potential future expansion were considering.
I disagree with you that you need one to match your cooling power. You aren’t going to over heat it, it’s just going to cool whatever vapor is created. I used to run a 52k unit and never had any trouble with if being fo big
An overpowered heater will cycle very often. If you go with an overpowered one you really need a holding tank. Our 350k btu heater is such a pain because we only need about 100k btu. I didnt say anything about small, just said its best to match your condensing power. Your saying to buy a 1000 hp car to drive 10 miles a hour. Yea you have all that extra power but you cant use it.
we only use the heater at 95 degrees and im not sure how that calculation works. If it fires 100% of the time at 95 degrees would that assume its using all the btus? Does temp not matter? Im not a expert here. Not sure how 100k btu would do 30 lbs a min. Our luna had a 55kbtu heater and would get about 4-5 lbs a min of recover, sometimes 6lbs if we turned it up all the way.
Yea we use the “Boiler” as a heater as it can be used for domestic hot water. It also powers a few other things besides our 200l collection pot and vapor traps/ molesieves. My whole point was dont need to buy a massive hot water heater for a small set up. If you have a small coil and dont have access to metric tons of dry ice then one only needs a heater that keeps up with their recovery.
This was installed for an av-15. Instead of using the huber kiss heaters that could not keep up with production, we used this. It was already there and not being used at the time. I had the same thought as Fickle when I hooked it all up I was like bigger should be fine and it will just not run much. Im just explaining the pains ive had to deal with running a Massive heater that was not intended to be paired with a collection pot. Im just trying to say if you have the ability to pair your heating and cooling why would you go oversized.