| Author | Message | ||
| captain ron (Captain_ron)
Rating: N/A |
I'm thinking about geting a tankless hot water heater, a LP model. It heats at 38,100 BTU / Hr which is about .577 gallons per minute. do you guys think this will be enough for showers and dishes and bath sink? I would also like to use my webasto heater too once I get it plumbed. I have my eye on a seward model for that hot water heat. | ||
| Jerry Liebler (Jerry_liebler)
Rating: N/A |
Ron, Be aware that the Seward hot water tanks with heat exchanger and 120 volt heating elements only transfer about 6000 BTU/h from the Webasto coolant to the domestic hot water. What this means is the recovery rate 'sucks'. So get at least the 11 gallon Seward to have enough stored hot water for a decent shower. Regards Jerry 4107 1120 | ||
| R.C Bishop
Rating: N/A |
Right on Jerry. And then, only after a long drive. Ron...ever read the archives? There's lotsa stuff there about every conceivable bus subject. FWIW  RCB | ||
| Dale Fleener (Dale_mc8)
Rating: N/A |
Ron, there is a tankless water heater thread only a week back, March 16. FYI | ||
| David Hartley (Drdave)
Rating: N/A |
There is a new one made just for RV use on demand. The Bosch home units are big, clunky and not made or approved for RV use, They also are not a sealed burner unit. They also take a minimum of 1/2 to 3 gpm to start to cycle. They also need a 4 to 6 inch Vent stack. As for fuel usage they also need a lot of volume to operate. This creates a problem with the LP tank chilling and reducing fuel flow. I bought one and then found the drawbacks. Silly Me... | ||
| John MC9 Rating: N/A |
Has anyone tried a small oil fired home unit for a bus? (It'll run on diesel) www.kerrheating.com/ | ||
| Richard Bowyer (Drivingmisslazy)
Rating: N/A |
I had a 20 gallon cold water heater with provision for a heat exchanger from the Webasto and or the engine. Also had an electric heater element. I never run short of hot water. Richard | ||
| dougtheboneifiedbusnut
Rating: N/A |
Am I missing something here? Isn't Ron asking about an instahot or a hot water on demand type heater? | ||
| Camill Paul Elbisser (Paul)
Rating: N/A |
I Looked at a Twin Temp combination RV heating system made here in Cincinnati by PrecisionTemp. This is a LP Gas unit for: Coach heat. Hot water adjustable 100-145 F Hot Tap for food and drink preparation 190 F Engine Pre-Heat And use engine heat to heat hot water only. They do not have this unit on there web site. ( www.Precisiontemp.con ) They have water only heating systems on the site. I like this unit! Paul | ||
| Ross Carlisle (Rrc62)
Rating: N/A |
I use an RV500 for hot water. It works well from what I can tell so far. I'll be using it more this summer. I haven't really used it much yet except for testing and such. I thought about using it for hot water heat, but I think the gas consuption would be way more than the Suburban forced air furnace. | ||
| John MC9 Rating: N/A |
"Am I missing something here? Isn't Ron asking about an instahot or a hot water on demand type heater?" Yeah, but who cares? Forget about him Doug, we want to talk about something different. | ||
| john w. roan (Chessie4905)
Rating: N/A |
Speaking of instant waterheaters...Do you think it will be very hot this summer? | ||
| John MC9 Rating: N/A |
Hey... How 'bout them Braves.. | ||
| Richard Bowyer (Drivingmisslazy)
Rating: N/A |
I think it was decided here a few weeks ago that there is no such thing as a hot water heater that Ron is looking for. It is a cold water heater. Who in the world needs to heat hot water? LOL Richard | ||
| john w. roan (Chessie4905)
Rating: N/A |
Wouldn't heating water that is already hot make it colder? sort like double negatives? I remember seeing small propane units that provided instant hot water. How about a small rv type electric with large elements that could give hot water in a short time? Like a 15 gallon with two 4500 watt elements? Run a big generator for 15 minutes and get a lot. Of course you could get about the same deal with a heat exchanger on the generator or coach.The instant type would be nice, but how much water are you going to waste in the coach with a small centrally located electric.The water lines in a coach are small anyway. Maybe keeping it simple would would be better as instant types have a lot of expensive parts that could fail after5 to ten years. Where do you get the parts out in rural America on a trip. Electric is either failed element or thermostat or pressure relief;parts you can get anywhere. | ||
| Stephen Fessenden (Sffess)
Rating: N/A |
We have hot water in the morning from engine heat the day before. An LP gas hot water heater should act like an instant HW heater if the burner is big enough and the lines are short. (How long can they be?) If you have a 10 gallon hot water heater and a 100 gallon fresh water tank, the water cooling off tells you to lighten up on the water use. A handheld shower is a great water saving device. Stayed with friends with a gas instant HW heater. It tended to alternately scald and freeze on a fixed setting. If you are moving out of the way of scalding or freezing water, you will be wasting water and fuel. I think a small reserve tank like an RV HW heater is ideal. Maybe there is a way to set up a remote shut off so it does not run when you are away and overnight, for safety and economy. | ||
| Fred Mc Rating: N/A |
I have had a Paloma instant hot water heater for 20 years. They work on water pressure. When the pressure goes down the burner starts. Took me years to figure out why we alternately got scalded and froze in the shower. Then I figured out it was the shower head causing a pressure backup. Once I modifed it the system works very well. Don't know if Paloma is still available or not. Fred Mc. GM PD4106 | ||
| John MC9 Rating: N/A |
How'd you modify it, Fred? |