I am installing a hand washing sink and faucet in a RV. If I buy this heater, do I need to get a on-demand water pump as well? Thanks for your answer.
1142020
You just need a constant supply of water to the heater whether it comes from the on-demand water pump or some other constant source of water. Make sure the tank is full of water before turning it on.
1142021
This is just a heater that runs off of 110v and connects to the water line. It has no pump. I have two units and they work well after 1 and 2 years respectively.
1142022
This unit only heats water supplied to it under pressure. I would think however you get cold water from you tap would supply the cold water to this heater. If your cold water faucet also activates a pump the same would be needed for the hot water faucet.
1142023
Not if you hook it to the pressure side of your onboard RV demand water pump as it will provide water supply to the heater. Make sure the water heater is full of water before you turn it on or you will burn out the heating element in the heater.
346717
The pump gets installed on the output pipe of your hot water heater. The comfort valve get's installed at a sink that is furthest away from your hot water heater. I have my valve installed under a sink in the master bathroom. The pump will then pump hot water through the system and will return via the cold water pipe under the sink where you install the valve. Since your hot water heater is fed from the cold supply, the pressure of water is constant flowing from the hot back to the cold. You will notice that your cold water will be warmer than normal since it will be mixed with the hot water. But the comfort valve is a one way valve so cold water should not feed back into your hot water side. Take the two water feeds from under your sink and remove the ends from the faucet and attach to the sides of the comfort valve. Then take the two new pipes that came with the valve and attach to the top of the valve and the other ends to the faucets. For Newer homes these pipes should work fine. Older plumbing might need some different size fittings.
81339
The unit is operated on AC, but like most alliances, the AC in most cases is converted to DC. Regardless, the Unit needs to operate on AC in order for it to work. The Rheem's and other Electronic On-Demand Water Heaters only require a fraction of power to operate... the heat is provided by PL or Natural Gas, the fan takes the most, but will run on Modified Sine Wave Inverters. No other Brand On-Demand water heater will warranty if they run on Modified... they must be on Pure Sine Wave, or grid power, or Inverter style generators (with an "I" in the model number). So with folks that have older modified sine wave inverters, The Rheem is the only one that will operate and won't void the warranty. The unit is operated on AC, but like most alliances, the AC in most cases is converted to DC. Regardless, the Unit needs to operate on AC in order for it to work. The Rheem's and other Electronic On-Demand Water Heaters only require a fraction of power to operate... the heat is provided by PL or Natural Gas, the fan takes the most, but will run on Modified Sine Wave Inverters. No other Brand On-Demand water heater will warranty if they run on Modified... they must be on Pure Sine Wave, or grid power, or Inverter style generators (with an "I" in the model number). So with folks... » Read More The unit is operated on AC, but like most alliances, the AC in most cases is converted to DC. Regardless, the Unit needs to operate on AC in order for it to work. The Rheem's and other Electronic On-Demand Water Heaters only require a fraction of power to operate... the heat is provided by PL or Natural Gas, the fan takes the most, but will run on Modified Sine Wave Inverters. No other Brand On-Demand water heater will warranty if they run on Modified... they must be on Pure Sine Wave, or grid power, or Inverter style generators (with an "I" in the model number). So with folks that have older modified sine wave inverters, The Rheem is the only one that will operate and won't void the warranty. « Show Less
1332690
No I disconnected my furnace hot water and replaced it with this heater for sink use only. now it supply's hot water immediately since it is mounted under the sink.
1963157
need more information, Are you wanting to supply two sinks and two showers? These type of water heaters require the use of low flow aerators for the faucet and shower heads or the water will not get very warm. The water heater should also be installed a close to sink or shower (point of use) to get hot water quicker. If you are wanting to service two showers then I would say that this unit is not large enough.
141839
I did not need any booster pump on my basement installation that feeds a kitchen faucet and refrigerator. Manufacturer has mentioned that a booster pump can be added and I also saw few video on you tube, thinking I might need it.
367749
The heater will work. Your hot water capacity is going to be about 3 gallons as when you use hot water, cold water enters the heater and even though it has a four gallon capacity, the water begins to cool as new water enters. It is not an "on demand" heater but one that heats slowly and stores the heat in a small tank. So your sink and dishwasher should be fine however the shower will have to be two minutes or less. If you insulate your piping the heat is not wasted and will last a small bit longer and save you some energy.
1694655
No need power supply becaues it works off of the water pressure itself, so there is no electricity needed to run it. I used with my RO.
63633
It shouldn't be a problem, as long as you flush the water heater with vinegar once a year. This is regular maintenance regardless of how hard the water is. You can find a decent circulation pump for around $50 on Amazon, and tutorials on how to do this on YouTube. Hard water shouldn't stop you from buying this heater...has been working flawlessly for us for more than two years!
534807
The quick fill comes with some tubing as long as you hook up the system correctly it will not be a issue.Very simple to do.Enjoy Best thing I did for my RV and me.
1978721
I use a quick disconnect. I have had this model of pump for 2-3 years now. I live full time in my RV and it does a good job for me. Amazon's guarantee is great.
155591
You NEED a water supply - you might be able to attach a hose to a kitchen sink faucet.....but you definately need water.
466608
You would need a water container and a 12 volt pump. Fill container at hand pump. Set on picnic table or some other stable surface. Connect 12 volt pump outlet side to heater, inlet side to hose in container (use filter on inlet hose to protect pump). Could use a 5 gal. bucket or any water jug for source IF you have the pump. Suggest checking out sure flow RV pumps. According to one review you will have to adjust pump pressure to max and heater pressure to Min to make it work. Putting container of water above pump will increase natural pressure feeding pump from container.
1340278
Well, you can and I did, but let me tell you why and give you a cautionary note. In my case, it was a remote bathroom sink. It takes forever for the hot water to get over there. So I put this under the sink with a dedicated 30A circuit, attached to the hot water side. It is however heating cold water, because the water in the hot water pipe coming from the other side of the house is invariably cold. This allows someone to wash their hands with warm/hot water instead of waiting 5 minutes with the water running. You would never need 5 minutes worth of hot water at that sink. Now, what would happen beyond that? Well, if you kept running the water on full hot until the hot water from the house system reached this unit, it would continue to heat the water anyway, resulting in scalding hot water coming out of the tap. So depending on your application, you may want to do it the way I did. Or not.
1399874
you will need an electric pump. typically people buy one that plugs into their car or truck's adapter.
63676
Your washer should be able to pump the gray water into a sink or sewer line without the pump. The pump is best used when the sewer line is above a sink drain, for example.
558837
No. A pump is necessary. This unit just maintains the PSI for keeping the pump off i.e. "quiet" during a "false" water demand (e.g. a quick finger rinse). This unit is useless In a gravity only system.