Does a tankless propane water heater with 24v ignition exist?

[soulkandi]

I built a 24v system with 2000w inverter and it has been perfect. I have found any appliances I need as 12v/24v or directly a 24v appliance. I cannot find a propane water heater that will run off my 24v system, and would rather not have to build a step down converter to 12v for one appliance if I can.
Anyone have any experience finding the solution? I have enough power (1200w solar with 300ah batteries) to run it as 120v for the ignition, but I don't see that either.
Any advice or experience for a solution would be greatly appreciated!

 

[hwy17]

Is this a mobile application or something? Residential tankless propane water heaters that run on 120v would be the standard I think.

 

[time2roll]

Quick search says 35w of 120v and should not present a burden. Probably a small 100w inverter would do if the 2000 wants to be off periodically.

 

[hugemoth]

The tankless propane water heaters in my house each use 2 D size batteries for ignition. The batteries last for years.

 

[Madcodger]

If you can run with 120V AC, that sounds like the easiest approach. Our Rinnai propane tankless seems to just sip power. I have an Emporia Vue and noticed a few days ago that the Rinnai was using just 39W when running. I didn't catch it at the moment of actual ignition, but suspect that's not much different.

 

[WattSecond]

Bosch makes battery powered tankless propane water heaters, 2 D cells last years. Not servo controlled. Heater adds X degrees to incoming water, in summer lower heater temp and in winter raise heater temp. Simple system. Switched to Rennai , settable water temp regardless of input water temp. Uses about 150W active.

 

[Cronix]

They use so little power I'd just use your existing 120v. Outdoor models can consume a bit more power (I have an outdoor Rinnai model) as they have internal heaters to prevent freezing. I don't think you will find something that runs on 12/24v natively.