Hot Hot Water


180°F Sanitizing Water Hose

One of the requirements for inspection is 180°F hot water for sanitizing. This is very hot. And dangerous.
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To achieve that our heat pump[1, 2] hot water heater raises our normally 45°F water to 140°F in it’s 80 gallon tank while simultaneously cooling our cutting room down from it’s normal cave like temperatures and dehumidifying the air. Then an on-demand water heater boosts it the remaining 40°F to deliver 180°F at the end of the hose.

The hose and hose head both are special high temperature versions and the on-demand hot water heater is located right near the start of the hose to minimize the heat loss during travel. The pipes are insulated as well.

180°F is kind of scary hot.

Outdoors: 70°F/48°F Sunny, Rain in the Night as usual
Tiny Cottage: 68°F/62°F

Daily Spark: I always wanted to as Morphius, “What if I take both the blue pill and the red pill?”

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About Walter Jeffries

Tinker, Tailor...
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4 Responses to Hot Hot Water

  1. Farmerbob1 says:

    Walter,

    This isn’t related to your processing facility, but I figure you and others might get a chuckle out of it. (I do eventually get to hot water, below)

    The gas company sent out a serviceperson the other day, and they replaced my gas meter. Apparently, it had a leak in it. I doubt this, or if there was a leak, it was tiny. I suspect that the real reason for the visit is that for about eight months out of the year, I use only a couple cubic feet of gas per month. Last month I used 4.116 therms. This has been typical for me for nearly seven years now.

    It would not surprise me at all if the gas company was, perhaps, thinking I had ‘modified’ the gas meter. Not so. I simply turned the hot water heater to minimum temperature. I wash everything in cold water. My clothes dryer and range are electric. Even my wintertime gas use is very low compared to others I’ve spoken to. During the winter, I keep the heat at 60F.

    After the serviceman replaced the gas meter, he restarted the water heater. What I didn’t notice/realize at the time was that he cranked the temperature on the water heater up to maximum. As mentioned before, I normally keep the water temperature at minimum.

    When I first tried to take a shower after the service, it was literally too hot for me to stand in unless I turned the shower valve fully to cold. It’s a single unit valve which I now know does not completely block hot water. Even with the water turned fully to cold, the water was still uncomfortably hot to me. I know how cold my unheated water is. Too cold. It’s frightening how hot the water heater had my water. If I had just jumped in after setting the valve to it’s normal position, I could have hurt myself. Even if I hadn’t blistered, I certainly would have jumped out of that shower so fast I might have fallen down.

    So, I will attest that the hottest setting, even for a household hot water heater, is scary!

    • Eek! That is a scary story. You should tell that to the gas company as they’ll want to retrain their service personnel to not do this as it could hurt someone. Their insurance company and lawyers will be very upset if they fail to take care of this once notified. Let the service supervisor know and they’ll make sure this sort of thing gets fixed so it does not happen. Checklists.

      • Farmerbob1 says:

        You have a point there, Walter. I recognized the danger, but didn’t really think about how it might impact others.

        I’ll poke at the gas company about this. No harm was done, to me, but turning the water heater to full heat after re-lighting it seems excessive.

      • Farmerbob1 says:

        Walter,

        I sent a reply to the gas company. If they respond in a ridiculous manner, I’ll provide their reply for the entertainment of you and your followers.

        **Begin letter**

        Good day,

        Before going into any detail, I will first clearly state that I experienced no injury as a result of the problem that I am about to address. That may not be the case with the next individual who finds themselves in my situation.

        The other day, a serviceman came to my home and replaced the gas meter. When he re-started the water heater, he apparently adjusted the water temperature to maximum. I normally keep my water heater turned to minimum and have not adjusted that temperature for years.

        I did not notice that he had changed the setting of the water heater until I attempted to take a shower. I have a single-valve shower. It apparently always allows at least some hot water through the valve. The water was so incredibly hot that I had to turn the valve to the coldest possible setting to take a shower that wasn’t painfully hot.

        If I had turned the valve to its normal position and stepped into the shower before the water reached full temperature, I could have been injured by the extremely hot water. If I had not been injured directly by the water, I could have easily been injured in frantic efforts to get out of the water.

        Please train your service individuals to note the position of the temperature setting on the water heater, and leave it the way they found it. If it seems oddly set, it is appropriate to make a comment to the homeowner about it, but making adjustments without consulting the homeowner is a very bad idea.

        Again, I was not injured. I seek no compensation. I am only making you aware of a potential problem that your service team should address with training.

        Regards,

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