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  • Home Carbonation Setup for Unlimited Seltzer

    No need to worry about airtightness and condensation. If it's a mini fridge you'll have to simply manually defrost periodically as with any other mini fridge. Frost will form on the evaporator plates but that's normal and not a cause for concern. Keep it simple.

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  • Home Carbonation Setup for Unlimited Seltzer

    I wouldn't know how long the max length is. You'd have to test flow rate of the pump unrestricted (connected directly to the faucet) and compare that against the flow rate of your intended set up (connected through the RO tank through your length of tubing). If the difference is significant, reduce the length or increase the diameter. If it's not, then it probably would work fine. Good luck.

    No I don't think a wine fridge would be suitable. A regular fridge gets down to 32-40 F so that 10-20 F difference would matter.

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  • Home Carbonation Setup for Unlimited Seltzer

    The longer the hose, the more resistance there is. If the supply line can't keep up with the pump then you'll get cavitation which can damage the pump. If line is going to be long the simple solution would simply be to upgrade to a larger diameter hose. Ideally you'd change all the fittings to match the larger diameter line. Good luck.

    Hi, this is a great question. I want to clarify that if carbonated water gets dispensed at room temperature, it goes flat fairly quickly. Thus chilling it after isn't going to give you the same results as dispensing the carbonated water cold. If you can only fit the carbonator tank in the fridge that would still be fine even if fed by room temperature water from your RO tank.What usually happens is that while you're filling, the float will be triggered and the pump will start forcing water into the tank. You could have dispensed anywhere from none to almost a full glass of seltzer when the pump starts. Regardless, that first cup is usually fine and probably the next one as well. However with subsequent cups, the water may get warmer and warmer as you deplete the existing cold carbona…

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    Hi, this is a great question. I want to clarify that if carbonated water gets dispensed at room temperature, it goes flat fairly quickly. Thus chilling it after isn't going to give you the same results as dispensing the carbonated water cold. If you can only fit the carbonator tank in the fridge that would still be fine even if fed by room temperature water from your RO tank.What usually happens is that while you're filling, the float will be triggered and the pump will start forcing water into the tank. You could have dispensed anywhere from none to almost a full glass of seltzer when the pump starts. Regardless, that first cup is usually fine and probably the next one as well. However with subsequent cups, the water may get warmer and warmer as you deplete the existing cold carbonated water. So for hosting parties, the results may not be ideal but for a couple of individuals it should be perfectly fine. Even if you dispense it continuously into a cup of ice, non discerning guests may not even realize the difference.

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  • Home Carbonation Setup for Unlimited Seltzer

    Just as long as the carbonator can fit in the fridge, I don't see why not. You just have to make sure the orientation is correct. Up needs to be up as the carbonator has a float valve in it. If you tilt it, it won't work properly.

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  • Home Carbonation Setup for Unlimited Seltzer

    Hi, the CO2 at 80 or 110psi would be a start and it's correct. As long as it's above the water psi, it should carbonate. First off, make sure to purge the carbonator tank when you fill it for the first time. There's a bleeder valve at the top which can open. So CO2 valve closed, water valve open, then put a towel on top of the bleeder valve and open slowly until water comes out. That means the tank should now be full of water with no air inside. Next open the CO2 valve and start letting out some water from your dispensing tap. Once some of the water dispenses, it should be replaced with CO2. If the water level gets too low, that's when the pump turns on and forces water into the carbonator tank. Next make sure you're dispensing cold seltzer. If it comes out at room temperature i…

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    Hi, the CO2 at 80 or 110psi would be a start and it's correct. As long as it's above the water psi, it should carbonate. First off, make sure to purge the carbonator tank when you fill it for the first time. There's a bleeder valve at the top which can open. So CO2 valve closed, water valve open, then put a towel on top of the bleeder valve and open slowly until water comes out. That means the tank should now be full of water with no air inside. Next open the CO2 valve and start letting out some water from your dispensing tap. Once some of the water dispenses, it should be replaced with CO2. If the water level gets too low, that's when the pump turns on and forces water into the carbonator tank. Next make sure you're dispensing cold seltzer. If it comes out at room temperature it'll go flat fairly quickly.However, from your message above the primary problem is that you don't seem to have any way to regulate the flow of water. If you don't have the Perlick 650ss faucet, you'll need to use another method to restrict the flow. If you use a non-adjustable beer faucet you could pair it with longer hoses but that will require some experimentation. It could be an additional 5' or 200' of hoses; I have no idea. Increasing the length of the line reduces the flow rate. Once the flow comes out at a more reasonable rate, the water itself should be carbonated properly. Your best bet would be to get the Perlick 650ss or another type of flow control faucet.

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  • Home Carbonation Setup for Unlimited Seltzer

    It should but it'll just run more often depending on the volume of soda water you consume. In a commercial set up, the water runs through a chiller after carbonation which can supply a high volume of chilled water. If you simply have a small bar fridge, the water should either be pre-chilled or stored cold for it to carbonate and remain carbonated. Thus why I chose a regular McCann unit and a RO pressure tank simply for that volume of cold water.

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  • Home Carbonation Setup for Unlimited Seltzer

    I'm not sure what the problem is. Water temperature shouldn't make a difference in the operation of the pump or float. Technically the way you set it up, shouldn't even work. Your CO2 set to 90 PSI is too high which means it will always overpower your incoming water pressure. Try turning it down to 45 PSI and see what happens. Ensure you purge your tank after changing the PSI. Please let me know your results.

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  • Home Carbonation Setup for Unlimited Seltzer

    I don't think the size of the line from the carbonator to the tap would have that large of an impact on the level of carbonation. I would first ensure that the carbonator tank is properly purged of air before using. Basically, shut off the CO2 and open the valve at the top of the tank to bleed out the air until water comes out. Then you can shut the valve immediately. You can turn the CO2 valve back on. What temperature is the soda water dispensing at? Those are the only 2 factors I can think of that would impact your situation.

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  • Here's the link to the excel file - https://cdn.instructables.com/ORIG/F94/Y0EX/IFUELPVQ/F94Y0EXIFUELPVQ.xlsx

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  • The McCann carbonator has 2 backflow valves. One is located right after the pump and the other at the carbonation tank at the CO2 inlet. This ensures carbonated water doesn't flow into the CO2 tubing and of course, ensures the carbonated water doesn't escape into the household water supply. It has to be higher pressure than the water inlet. You can also look up McCann carbonator parts diagram to view exactly where it is. As it's a commercial unit, parts should be readily available unlike household units where if something breaks, you may as well trash the whole unit.For the Kegerator, I can't be certain where to drill as I don't have one but I'm sure there's plenty of non-critical spots to create a hole. Leave it off for a while then turn it on to feel around to ensure the spot yo…

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    The McCann carbonator has 2 backflow valves. One is located right after the pump and the other at the carbonation tank at the CO2 inlet. This ensures carbonated water doesn't flow into the CO2 tubing and of course, ensures the carbonated water doesn't escape into the household water supply. It has to be higher pressure than the water inlet. You can also look up McCann carbonator parts diagram to view exactly where it is. As it's a commercial unit, parts should be readily available unlike household units where if something breaks, you may as well trash the whole unit.For the Kegerator, I can't be certain where to drill as I don't have one but I'm sure there's plenty of non-critical spots to create a hole. Leave it off for a while then turn it on to feel around to ensure the spot you're interested in drilling through doesn't get hot. When you drill, just be careful to only drill deep enough to break through the exterior sheet metal. Once through, use a screwdriver to carefully dig out the insulation foam until you hit the interior plastic. If you don't see or feel a thin pipe then you should be good to go to keep drilling through to complete your hole. Good luck!

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  • I just used a drill and dremel with a cut off wheel to cut the holes. It's not that difficult since going through the fridge you just have to ensure you're not hitting any refrigerant lines. I was lucky in that the fridge had the lines running through the sides and not through the top or the back. You can just feel for it to see if it gets hot when the compressor is on. If it does, try to avoid it. If it doesn't, it should be safe to cut through. You're really only piercing the metal sheet exterior and at that point, you can stick something in to dig through the insulation gently to ensure you're not messing with piping. Once through, then again, you're piercing plastic/metal sheet on the inside. I tried insulating with just Roxul but you could use expanding foam or even playdoh a…

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    I just used a drill and dremel with a cut off wheel to cut the holes. It's not that difficult since going through the fridge you just have to ensure you're not hitting any refrigerant lines. I was lucky in that the fridge had the lines running through the sides and not through the top or the back. You can just feel for it to see if it gets hot when the compressor is on. If it does, try to avoid it. If it doesn't, it should be safe to cut through. You're really only piercing the metal sheet exterior and at that point, you can stick something in to dig through the insulation gently to ensure you're not messing with piping. Once through, then again, you're piercing plastic/metal sheet on the inside. I tried insulating with just Roxul but you could use expanding foam or even playdoh around the holes. The purpose really isn't to insulate the holes but rather just seal it so that air doesn't pass through. If you have air passing through, you're fridge will build up frost quickly. For the shrink wrap, I bought several feet of construction/boat shrink wrap off of ebay. It's fairly inexpensive stuff and gives it a nice clean look.

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  • Hi Chuck, I don't believe you can adjust the actual water pump pressure for the McCann unit. I was advising adjusting the CO2 pressure coming out of the regulator and into the McCann unit. The tank should have a float so that once the water levels reaches a minimum, it will trigger the pump to force the water in. If the CO2 pressure is lower than the water pressure, water will flow freely into the carbonator without ever triggering the float and pump. This also means, only water will go into the tank and not the CO2 (thus no carbonated water). When you have a higher CO2 pressure than the household water pressure, every time you dispense some carbonated water, the tank will fill with CO2. However once the water level reaches the minimum point, the McCann pump trigger and will force w…

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    Hi Chuck, I don't believe you can adjust the actual water pump pressure for the McCann unit. I was advising adjusting the CO2 pressure coming out of the regulator and into the McCann unit. The tank should have a float so that once the water levels reaches a minimum, it will trigger the pump to force the water in. If the CO2 pressure is lower than the water pressure, water will flow freely into the carbonator without ever triggering the float and pump. This also means, only water will go into the tank and not the CO2 (thus no carbonated water). When you have a higher CO2 pressure than the household water pressure, every time you dispense some carbonated water, the tank will fill with CO2. However once the water level reaches the minimum point, the McCann pump trigger and will force water into the tank. To diagnose the problem, first purge the carbonator of air. Close the CO2 regulator valve (0 psi), turn on the water and open the bleeder valve at the top of the tank (black or red flip switch). Take care when opening the valve as water will gush out once the tank is full. I usually place a towel on top with my finger on the trigger to close immediately once I feel the towel getting wet. Once the tank is full of water, turn on the CO2 regulator to dispense at 70-80 psi (assuming your water is at 60 psi). Now start dispensing the water as if you were filling a refreshing cup of sparkling water. CO2 should now be replacing the dispensed water in the tank. You should be able to start emptying the tank until the pump kicks in. If you never hear the pump turning on and you've practically drained the tank twice over something is wrong with the pressures. Either the water pressure is too high or the CO2 pressure is too low. Of course, double check that your pump is powered as well. If you have CO2 coming out of the spout that means the float/pump isn't turning on. If you have a non-stop water supply that means the water pressure is greater than the CO2 pressure. I hope this helps. If you have further problems, please describe in detail what the problem is. If this works give an update!

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  • That's great to hear! A kegerator would definitely be ideal but unfortunately it's pricier compared to a basic fridge. I'm sure it's a much cleaner set up though!

    Thanks! I hope it gives you inspiration to do something like this in the future!

    Thanks for sharing your experiences! I'm sure others will also find this helpful. I also had some problems finding the exact right crimp and hose combination but I just put 2 on and crimped it really tight. Works like a charm!

    Yes, it could be. Household faucets are typically made out of brass which is cheaper than stainless steel. Just a word of caution brass can leech into your carbonated water. Lavatory faucets usually have an aerator near the tip. This, as well as the flow control in the handle could agitate the water enough that most of the co2 would dissipate right after pouring your glass of seltzer. Getting a beer faucet would be the best solution but I know the Perlick 650ss can be quite expensive. An alternative would be to use an inexpensive beer faucet and experiment around with different lengths of tubing. Beer faucet have a simple ball valve so the flow is relatively uninterrupted, keeping most of your co2 in your glass before consumption. If you have too much pressure and a short length o…

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    Yes, it could be. Household faucets are typically made out of brass which is cheaper than stainless steel. Just a word of caution brass can leech into your carbonated water. Lavatory faucets usually have an aerator near the tip. This, as well as the flow control in the handle could agitate the water enough that most of the co2 would dissipate right after pouring your glass of seltzer. Getting a beer faucet would be the best solution but I know the Perlick 650ss can be quite expensive. An alternative would be to use an inexpensive beer faucet and experiment around with different lengths of tubing. Beer faucet have a simple ball valve so the flow is relatively uninterrupted, keeping most of your co2 in your glass before consumption. If you have too much pressure and a short length of hose though (without a flow control faucet) the water would spray everywhere upon pouring. Having a longer length of hose would slow down that flow until you get it just right. What you currently save from buying a proper faucet you may waste in co2 over the life of this appliance. Hope this helps! Good luck!

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  • Looks great! It keeps it simple when the carbonator can be kept as-is. I was also considering putting the final filter between the tap and the RO tank but with limited space I just chose to leave all the filters outside of the fridge. I haven't noticed any unusual tastes from the tank. If you can share some pictures of inside the fridge too it could give others additional configuration options. Thanks for commenting!

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  • There's an adapter that converts the 3/8" OD tubing to a barb fitting so I can attach 1/4" ID hose directly. This is for the flat water faucet - http://www.installationpartssupply.com/category/f...For the seltzer line, I just connected the 1/4" ID hose directly to the carbonator tank using a 3/8" swivel nut to 1/4" barb connector. No leaks whatsoever.The system works great. It's been flawless since I posted this instructable. I've refilled the co2 tank once 3 months ago and I also changed out the RO sediment filters once. Everything has been working fine without a hitch. Good luck!

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  • Good for you! I'm glad this build is helpful to you. I think either hard wiring it or replacing the connector with a standard 3 prong is fine. Whichever works best for you. Since I've assembled it I haven't found any need to take it apart. If you hard wire it means that one less thing to worry about if anything goes wrong. Though having the ability to disconnect the pump could be useful if you need to change/manuever anything around. When I was hooking up my system I forgot once or twice to connect the pump which made troubleshooting a tad difficult. Doh! :)

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  • The only feasible beer faucet that I found was the Perlick 650ss as it has a built-in flow control. This will allow you to dial down the high pressure of the seltzer without requiring any additional hardware. The difference in costs is most likely due to supply and demand. There just isn't enough home users that desire a dedicated seltzer setup thus the hardware that exists geared primarily to commercial establishments. Beer enthusiasts however, is a different story. With the homebrew market expanding and the lines being blurred between commercial and home users this has driven a thriving market for all sorts of beer supplies. Luckily seltzer users can also benefit.Hope this helps!

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