I have solar hot water but sometimes the water is just warm, will this unit function with variable inlet temperatures? Anywhere from 70 to 140 degrees
499100
It doesn't matter what the imput water temperature is for the Rheems Tankless. It will put out a max flow rate of 3 gallons per minute (GPM). If your solar panel water is hot, then the Rheem heater will consume less power. That is good. If the water is tepid, you will pay more to heat it up. The Rheem is better than the Bosh Power Star because the minimum activation flow rate is lower (0.4 GPM) and therefore more controlable at lower flow rates.
499101
The company recommends incoming water to be less than approx 130deg. I installed one under the kitchen sink, in series with the incoming hot water line. It seems to work fine. I am not sure if it would work for a whole house, it is designed for a single appliance . If you are looking for a whole house, you will need a larger capacity unit, meaning larger power service than a 40amp 220v.
499102
I'm sure it would boost your water to very hot at medium setting however it would defeat your solar savings. Mine works good with incoming water from well at 50 degrees with low pressure set a notch above medium. I'm hooked directly to bathroom shower & branched to sink & washer in same room. Water plenty hot there however I have additional 25' run to kitchen sink which is above warm but not hot. This is old farm house use. If I were you I'd go with smaller unit run off 110 & have close to fixture you want hotter with light switch handy to turn on when needed instead off just the flow switch. With variable temp going in it will still be probably be variable coming out of unit but hotter. I'm sure it would boost your water to very hot at medium setting however it would defeat your solar savings. Mine works good with incoming water from well at 50 degrees with low pressure set a notch above medium. I'm hooked directly to bathroom shower & branched to sink & washer in same room. Water plenty hot there however I have additional 25' run to kitchen sink which is above warm but not hot. This is old farm house use. If I were you I'd go with smaller unit run off 110 & have close to fixture you want hotter with light switch handy to turn on when needed instead off just the flow... » Read More I'm sure it would boost your water to very hot at medium setting however it would defeat your solar savings. Mine works good with incoming water from well at 50 degrees with low pressure set a notch above medium. I'm hooked directly to bathroom shower & branched to sink & washer in same room. Water plenty hot there however I have additional 25' run to kitchen sink which is above warm but not hot. This is old farm house use. If I were you I'd go with smaller unit run off 110 & have close to fixture you want hotter with light switch handy to turn on when needed instead off just the flow switch. With variable temp going in it will still be probably be variable coming out of unit but hotter. « Show Less
499103
I don't see why not. It is based on ground water temp and flow rate. I live in SWFL and the ground water temp is 65 degrees which gives me a flow rate of 2. I only use it for one outside shower and that has been more than sufficient to have hot water non-stop. It actually might be too strong for your use because you say your water temp is 70 - 140 (very hot). You should consult a professional plumber perhaps about your current system and they may be able to add a solar panel and adjust your water temp - might be cheaper.
499104
can this be enought for a 8 unjt efficency n can it be enstaled outside since its a solar heater
2247676
the output temperature is sporadic, although its adjustable , it doesnt work right, that is if if you turn the cold water on to lower the temperature at the facuet or shower , the unit shuts down and the water comes our icey cold. It drives me batty.
1462087
With temperatures in the 33°F to 35°F range, mine heats the water near the heater to 50°F while running at a 75% duty cycle. I infer from that data that the heater will turn on at slightly below 50°F water temperature and turn off at slightly above 50°F water temperature.
1508576
It is hard to tell since we have solar heat as well. But, I believe you could expect 10 degrees and it saves a lot on adding water.
992384
I don't run mine all the time so I don't have good detailed information. The setting for 'warm' or 'cool' has some effect on how long the water lasts. I am very satisfied with the unit.There are also 3 settings, "low", "medium" & "high" which will also affect the length of time that the water lasts. sorry, but I have not measured my unit under all of these different conditions, so I can't say how long it will run.
2120850
I have only used mine once but the water stayed warm. I'm not sure how hot it's suppose to be. The manual mine came with says it had the heat wave technology.
1707152
I use it for hot water on a shower. I have not put a thermostat to it, but if you turn the temp all the way up it is scalding hot so I would suspect that it gets hotter than 140.
1020749
The output temperature is dependent on three things. 1)Input temperature2)Gas Knob (Burner Setting)3)Temp Knob (Water Flow)The output temperature but can be lowered quite a bit. Unless your source water is already quite warm I would not expect any issues keeping it below the 85F output. However since the input temperature is what determines the min and max it ultimately depends on your cold water input temp.
1817950
It won't make water higher than 120. So < 120 is a good attempt to answer your question. If you are pre heating with solar, you prob. are limited to around that temp.
1855748
I don't think so. Heats water about 40 degrees above incoming temp. Warm but not hot.
1504163
I own one and I love it! First thing to check is the temperature adjustment knob under the unit is turned fully clockwise. The temperature rise can vary widely based upon that and other things, such as... the incoming water temperature, the flow in GPM (consider the flow all fixtures whixh are being used at the same time if more than one are... the higher the flow rate, the lower the water temperate rise. Also, if yours is a 240VAC unit and your actual voltage is less like 220VAC it won't warm water as much as 240 does. If your faucets, etc. are too far from the heater... some heat can be lost in the run of pipe, especially if it is in a cold area. Note that what causes thermal shutdowns to occur is overtemp, this can happen if the flow is restricted quite a bit, but high enough to activate the heater, and when the incoming water temp is very high. Also never try to connect this type of heater to water the is already preheated. I have some AE9.5 units as well and I know they have the thermal shutdown, I think all Bosch units do.
1400156
I replaced this with one that had the actual temperatures. My guess is that A would be 120 degrees - B would be 140 degrees & C - would be 160 degrees. Since I replaced this I tried temps below the A mark 120 degrees & I am currently running just a little higher then the A mark which would probably be about 125 degrees. When setting the Temps I believe you should also match the upper limit switch setting to your lower limit switch . My tank is a 40 gallon tank & like most electric hot water tanks there are 2 thermostats. Upper & Lower.Hope this answerers your Question! Ron
1020748
The output temperature is dependent on three things. 1)Input temperature 2)Gas Knob (Burner Setting) 3)Temp Knob (Water Flow) The output temperature but can be lowered quite a bit. Unless your source water is already quite warm I would not expect any issues keeping it below the 85F output. However since the input temperature is what determines the min and max it ultimately depends on your cold water input temp.
413875
The water that comes out is as hot as the tap water you put in the reservoir. I just add straight hot tap water, so apx. 120 degrees, or hotter depending on your hot water tank settings.
320592
I think so. I used it to add water to my water bed, and ran mostly hot water from the tap through this hose to the water bed (since I didn't want the bed to take a dozen hours to get warm enough to sleep in). The hose handled it fine. I can't say the water got up to 140 degrees for sure, but it was well over 100 degrees. Hope this answers your question.
2097124
I bought this specifically for use with hot water around 180 degrees. Hot water may damage regular garden hoses (or maybe not) but I wanted to play it safe.
1817949
Not that I am aware of, my water comes out of a fresh water lake. It is just above freezing temp in early spring and the heater gets it hot no problem.