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Curious Newbie
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# Posted: 13 Jan 2024 14:30
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Hi, I'm new to the forum and I've been reading some EXCELLENT threads (thanks to all for your shared wisdom and experience), but I can't find one that quite fits my project so I'm hoping for some advice. I have a tiny 3-season off-grid log cabin and I'm in the process of turning an old Rubbermaid 7x7 shed into a low-budget shower room. I'm pumping water from the river to an IBC storage tank beside the shed, then using a small on-demand solar-powered electric pump to push the water to the shower, heated by a 12L portable propane-powered Onsen outdoor water heater. I'd like to install the Onsen inside the shed, because then I can leave it set up all the time, not worry about it getting rained on, have easy access to the heat-level control on the front of the Onsen while showering, and so on. I'm not worried about heat melting the shed, because I'll put cement-board between the water heater and shed wall. I'll also put the propane BBQ tank outside and run the pipe through the shed wall for safety. The Rubbermaid shed is FAR from airtight, with gaps along the wall panels and around the doors, and there are grill-vents a couple of feet wide and about a foot high up at the roof-peak on both the front and back walls. My big question is, for short showers, is that enough venting for the heater to be set up permanently inside the 7x7 shed/shower room? If not, would an additional mosquito-mesh-covered hole cut in the sidewall near the heater, and/or a simple vertical steel vent from the top of the heater and out the shed roof do the trick in terms of minimizing risk from CO2 and other combustion byproducts if I mount the water heater inside the shed-turned-shower-room? Thanks very much for your advice.
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FishHog
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# Posted: 13 Jan 2024 16:40
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I have mine installed inside my 8'x8' interior bathroom. We have run 4 guys showering in a row and my CO detector never registered a thing.
The run time is short, and your not having a nap in the shower so the risk is quite minor.
Good to have respect for CO, but if you have some ventilation and aren't running for long, take some minor precautions your pretty safe.
Obviously its against the installation instructions, but in your case I think your OK. Add a CO detector if you still have concerns.
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909
Member
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# Posted: 13 Jan 2024 19:32 - Edited by: 909
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All bathrooms should already have negative pressure exhaust.
That's an interesting perspective FishHog.
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FishHog
Member
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# Posted: 14 Jan 2024 11:11
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Quoting: 909 All bathrooms should already have negative pressure exhaust. That's an interesting perspective FishHog.
Not sure many off grid outdoor Bath houses have negative pressure exhaust, but sure its a good idea if you have the ability and don't have enough ventilation. Sometimes cottages don't follow all home codes though.
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toyota_mdt_tech
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# Posted: 14 Jan 2024 16:33
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All self contained.
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