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02-16-2018, 12:52 PM
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#1
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Indoor Tankless Water Heater Under Skirt
My wife and I are building a short skoolie and I'm trying to get a handle on some of the items we want to install and plan ahead for the space they'll occupy. Has anyone had any experience mounting an indoor tankless system under the skirt? We happen to have quite a bit of space under our bus (I was able to sit upright under it when I was spraying down the seat bolts with PB Blaster) due to it being an accessible bus and I'd rather use that space than interior space. I would most likely build an enclosure of some sort (someone on a skoolie blog used filing cabinets for lots of their under bus storage).
EDIT: For reference, this is the sort I'm considering https://factorypure.com/collections/...eater-open-box
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02-16-2018, 01:01 PM
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#2
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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Have not done this myself, but it should not be a problem so long as it is enclosed and vented. The enclosure is only necessary to keep out dirt & debris and to prevent the flame from going out (if propane).
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02-16-2018, 01:06 PM
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#3
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by Tango
Have not done this myself, but it should not be a problem so long as it is enclosed and vented. The enclosure is only necessary to keep out dirt & debris and to prevent the flame from going out (if propane).
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Thanks for your input! Yeah, the enclosure would mostly be just to make sure the enclosure doesn't take a rock and shatter and, as you said, keep the flame from going out.
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02-16-2018, 01:10 PM
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#4
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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You might try looking up Ol' Trunt's 1935 Chevy build. He constructed an indoor/outdoor arrangement that is pretty clever.
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02-16-2018, 08:09 PM
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#5
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Bus Geek
Join Date: Apr 2012
Location: So Cal
Posts: 3,227
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
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Like Tango said your idea should work fine. The only thing I'd be worried about is water freezing in the heater core and the VERY high temp exhaust from the heater. I would recommend an insulated exhaust stack either inside or outside the bus to keep people from getting burned or setting the woods ablaze.
Jack
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02-16-2018, 09:11 PM
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#6
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Bus Nut
Join Date: Nov 2017
Location: Wright City MO
Posts: 280
Year: 1998
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins/Allison
Rated Cap: 74
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I don't know how exactly to vent the unit from underneath the bus the exhaust on those things get incredibly hot. If it were me I would run a stack through a properly built chase through the roof to avoid roasting an innocent bystander. Gene
__________________
Its hard to be wrong when you live in Wright City!
There is no mechanical problem that cannot be overcome by a skillfully applied combination of brute force and ignorance!
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02-26-2018, 12:40 PM
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#7
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by Gdog 5651
I don't know how exactly to vent the unit from underneath the bus the exhaust on those things get incredibly hot. If it were me I would run a stack through a properly built chase through the roof to avoid roasting an innocent bystander. Gene
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Thank you for your insight Gene. I was thinking about venting it next to the bus' own exhaust tip. I figured if someone's going to get scorched, it'd be right there.
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02-26-2018, 03:32 PM
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#8
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Bus Nut
Join Date: Jan 2018
Location: Upstate, SC
Posts: 278
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Be careful with those tankless units. Some are not designed for through-wall exhausting and require a roof exhaust. If that unit has a pilot light, it may get blown out while driving. I wouldn't rely on the safety to keep from filling the bus with vapor. I always shut off my propane tanks while driving and at night, unless my heat requires it.
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02-26-2018, 03:37 PM
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#9
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Bus Nut
Join Date: Feb 2018
Location: New Jersey
Posts: 335
Year: 2004
Coachwork: Corbeil
Chassis: Ford
Engine: Ford PowerStroke Diesel 6.0
Rated Cap: GVWR 11,500
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Quote:
Originally Posted by ben2go
Be careful with those tankless units. Some are not designed for through-wall exhausting and require a roof exhaust. If that unit has a pilot light, it may get blown out while driving. I wouldn't rely on the safety to keep from filling the bus with vapor. I always shut off my propane tanks while driving and at night, unless my heat requires it.
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Thank you for the advice! I'm definitely planning on installing a shut-off within the bus so I can make sure the stove and water heater aren't running when I don't want them to. And I appreciate the tip regarding through-wall venting. I did actually look to be sure that this model was capable (that and the price were some of the reasons I zeroed in on it).
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02-26-2018, 04:00 PM
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#10
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Bus Nut
Join Date: Jan 2018
Location: Upstate, SC
Posts: 278
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Quote:
Originally Posted by weboughtabus
Thank you for the advice! I'm definitely planning on installing a shut-off within the bus so I can make sure the stove and water heater aren't running when I don't want them to. And I appreciate the tip regarding through-wall venting. I did actually look to be sure that this model was capable (that and the price were some of the reasons I zeroed in on it).
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You're welcome. Happy to help.
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