9
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Can a typical tankless water heater be set to very low temperatures like 70°F/20°C?
The part you need is called a mixing valve.
The other answer is correct, but he OPs question is how to warm up the cold water supply.
If you can't find a tankless heater with low enough temperature ...
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9
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Accepted
Can a typical tankless water heater be set to very low temperatures like 70°F/20°C?
To answer the title question: No.
From the Rinnai manual:
RE199i, RE180i, RE199e, RE180e - temperature setting 98 F - 140 F
RE160i, RE140i, RE160e, RE140e - temperature setting 120 F - 140 F
...
4
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Can a typical tankless water heater be set to very low temperatures like 70°F/20°C?
Are there other options that I should be considering?
Another option you could look at is a waste water heat recovery system. This uses the heat from the water running down the drain to preaheat the ...
- 216
2
votes
AOSmith Voltex Heat Pump Water Pump Stuck on Vacation Mode
Figured it out, it was a combination of user error and a misleading user interface.
I had to tap the vacation mode button again to toggle off vacation mode. Half the time it would default back to ...
- 323
2
votes
What's the purpose of thie ciuculator
That is an instant hot configuration. The pump from what I can see is discharging into the cold water inlet of the hot water heater. Check the other end of the tube feeding the pump from above. I ...
- 6,446
2
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Adding 2nd unheated 50 gallon hot water tank
So, you have a recirculation system on your hot water. Which means that at some point, tepid water comes back from faucets - how often depends on how the system is set up. Most don't run all the time, ...
- 192k
1
vote
Water heater leak into base. Concerned about moisture or mold
Wood is damaged when it stays wet for long periods of time, like weeks and months. A 1-day incident will not be a problem. Let it dry naturally, you don't even need a fan, just time. Probably a day.
...
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1
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Exterior Water Heater venting
Straight up and out the enclosure roof, then continue straight up until the end is at least 2 feet above any obstruction within 10 feet (such as the higher part of the roof.) That may require bracing ...
- 192k
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