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Old 04-25-2017, 09:05 AM   #1
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On demand hot water

I've noticed that in my SR300 that the on demand hot water works very well when I'm hooked up but if I'm using the units source you must throttle the flow back to keep the water hot. Is this just how it is? I have the heat turned to high. Do I need to try something different? Is there an upgrade? Thank you.
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Old 04-25-2017, 09:20 AM   #2
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first is your on demand propane or elect? the temp of an on demand heater as I understand it is controlled by flow of water so it may be that you are getting a higher pressure (more flow) on your system with the pump then with city water (are you running a reducer). My other thought might be that if elect your generator may not be able to push the required amps as with shore power jus a WAG on my part.
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Old 04-25-2017, 09:49 AM   #3
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Thank you. The heater is propane. The flow is better with city water. It a ponderance.
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Old 04-25-2017, 09:54 AM   #4
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That is why I put WAG (wild ass guess) in my reply. please let the forum know what you find out or how you fix the problem
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Old 04-25-2017, 09:59 AM   #5
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Lol. Yep I knew what WAG was. I've been guessing too. If I find a cure I will for sure share it. This forum is fantastic. Thank you.
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Old 04-25-2017, 10:42 AM   #6
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Are you using an oxygenics shower head? It creates a shower flow with more force which makes for a much better shower experience when you have to decrease flow for warmer water.

We have had park connections where the pressure was so low we filled our tank and used the pump.

We also notice if the input water is really cold (like just above freezing, we really have to turn down the flow to get HOT water, and where the input water temp is high (like in AZ where we just hit 100 near Phoenix) we have to add cold water to get the shower cold enough, even with the heater turned to low

So we have found that the input water temp makes more difference for the on demand than the actual input psi.

But all in all, we wouldn't trade our on demand water heater for anything!!!!
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Old 04-25-2017, 11:01 AM   #7
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Excellent. I also wouldn't trade the on demand for the tank ether. I certainly can live with this small issue. I was more or less trying to see if others had noticed this as well. I'm just starting to learn the quirks of this rig. Having fun. Thank you again.
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Old 04-25-2017, 12:11 PM   #8
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I also have this issue with mine. The water heater is two stage. One set of burners for low flow and a second set for higher flow. The water pump alone never seems to deliver the flow required for stage 2. The Oxygenics shower head does improve the performance for us also.
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Old 04-25-2017, 12:35 PM   #9
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Quote:
Originally Posted by padcarroll View Post
I also have this issue with mine. The water heater is two stage. One set of burners for low flow and a second set for higher flow. The water pump alone never seems to deliver the flow required for stage 2. The Oxygenics shower head does improve the performance for us also.
What water pump do you have? You might look at upgrading the pump to a higher gpm pump. We did, when we had to replace our pump after a surprise freeze and it definitely improved flow throughout the rig. Might be worth looking at.
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Old 04-25-2017, 12:55 PM   #10
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We have the high end sureflo and I rebuilt the pump last year due to one broken chamber. It is 4 gpm which is higher than the shower requires.
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