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    Sizing a mini split for an RV

    Im confused, is this 5th going to be stationary or travel?
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    Sizing a mini split for an RV

    The main issue is you simply can't gather the real EER easily. You have to gather the total enthalpy, as well as run blower testing to know what the real CFM is. If unaware, you basically have to measure the true CFM, the temp delta across the evap, as well as the latent (water) load. Then...
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    Sizing a mini split for an RV

    Oh yeah, inverter tech is something I've been all about for years. It just took too damn long! I installed a 3 phase condenser on my home so I could install a VFD. I was only mentioning the efficiency component of a Furrion compared to a solid mini split, but.......can we even use the word...
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    Sizing a mini split for an RV

    There is a lot of truth in this! For a road warrior, roof units still have their place, but I don't think the RV units will ever touch the truth technology and EER of a mini split. That being said, minis will leak if you even look at them wrong. I can't imagine a road trip! I discussed with...
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    Sizing a mini split for an RV

    Let me tell you how the industry works. They sell you a 1.5" wall with an R-15.... Until you realize the physics breaks down and even Poly Iso can't get there. They I add thermal bridging and and solar gain, and we have a different beast. Not knocking your rig man! Just saying. I used to...
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    Sizing a mini split for an RV

    Ok, I don't know what "get out of Dodge or in this case Hutch mobile" means. If being stationary or not. Either way, those are pretty legit, but unless built with the 3.25" walls like DRV, you can't lean on that R value. The sales BS is rich in that space!!! Like the Aluminum framed walls...
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    Sizing a mini split for an RV

    I do HVAC and very familiar with RVs. It would help to know what make you have. I don't need a model, more like length and amount of floor footage. Also what you plan to do with this. One factor people always forget here is it's a CAMPER! As is people going in and out constantly! this has...
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    Question about superheat.

    ;););) I don't think you're reading the room......
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    Question about superheat.

    Hey, it works! But I ain't got time for that ancient tech! :ROFLMAO: Digital probes for me. Here's a fun one for the techies. My temp clamps are just wireless TCs with a clampy clamp. All the time, I just lay one on the fan shroud and wedge the other in the side grille to get my...
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    Question about superheat.

    I have no issue with your numbers! I do always ask how they were taken because some dorks try to use an IR gun for this. NO! Sounds like you had a tech friend. 20* SH is too high! F that! Use your equipment data. 10-12 is normal. SH is SH!!!! Your compressor is NOT going to fail in that...
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    High tech solutions to older problems in HVAC

    I've followed this advent for 20 years, practically begging for 3p compressors and VFDs. These soft starts have serious tech in them! Way more than people even realize, and the OEMs don't want me to say, but they read back EMF for speed inputs in how to control the compressor better. A page...
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    Hvac and insulation guys I need some advice

    This is absolute gold!!! :ROFLMAO: :ROFLMAO: :ROFLMAO: :ROFLMAO: Seriously, this world is so screwed. Remember when people be driving off cliffs because the Garmin said to? Yeah, it's like that.
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    Hvac and insulation guys I need some advice

    It can be SO many things, and I can tell he doesn't understand any of it, so I really think a pro is needed. You cannot assess a system as "running right" without ALL the pressures, SH/SC, temps, and knowing both coils are clean! Otherwise this is just chasing a moving rope. Just knowing...
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    Hvac and insulation guys I need some advice

    I have to strongly disagree. Opening anything changes the flow dynamics and gives a false read. Drill hole in sheet metal and insert probe. Little plug or Al tape when done. I do it every single system. Measurements about 4-6ft away from A coil on supply, and 3ft from AH for return. BUT...
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    Hvac and insulation guys I need some advice

    I think you will need to get a pro eval. There is just too much of a competence gap.
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    Do you torque electrical connections?

    Oh, I see you are in CA.....that answers a few things. I'd ask them where you can send the bill. It's an inspection, not a field test. I have seen inspectors pull on wires, and that is reasonable. I think that is the right amount of pucker for electrons. If one pulls out, you are F'd!
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    Do you torque electrical connections?

    120kv is big boy stuff. I recall running the math on a similar bus bar mod. Ran the math on the hardware kit to realize the bolts would yield before bellevilles would collapse. I was the overseeing M.E. and it got tense because apparently the OEM or support staff can't do math, and my bosses...
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    Hvac and insulation guys I need some advice

    Ha, no "cold juice", or my personal fav, "reefer". :ROFLMAO:;)
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    Wiring question on Square D motor controller

    I do it all the time in low use cases. What will take out that switch is 240V motor duty starts. Not only do you NOT have anything close to that, you likely leave it in the one position nearly indefinitely. Personally, I'd reach for a 120V heavy duty or motor rated, no issue. I don't...
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    Do you torque electrical connections?

    You are NEVER wrong to torque to spec. However, plenty of idiots out there can still screw this up. I was recently in an industrial "dropped a phase" inspection. Morons drove the lug screws down on the wire insulation! As far as smaller devices, this is just where experience comes in. I'm...
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