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When the HO is a stone mason

IronmanIronman Posts: 5,157Member
edited July 2018 in THE MAIN WALL
New Bosch heat pump, dual fuel.





I like a tight vacuum.





Bob Boan


You can choose to do what you want, but you cannot choose the consequences.

Comments

  • IronmanIronman Posts: 5,157Member
    What came out: a 30 year old Trane down flow. There was no a/c previously.


    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • unclejohnunclejohn Posts: 1,389Member
    Very nice job. Had one of those old Tranes with a single burner. On another job I did for a very well known chef at a swanky DC restaurant I was going over the equipment with him telling all about SEER ratings and warranties and such and he kept going back to the outdoor unit pad, how was I planning on leveling it and so on. I told I would reuse his existing pad and shove a few rocks under it as best I could. I said it dodn't have to be 100% level. Oh yes it does he said. My father from Italy is coming to visit this summer and the first he will do is throw a level on that AC unit and it had better be level. I told him I would come out and remove the unit and he could level the pad to his hearts content. And he did. Came back the next day and set the new unit. One of my nicer looking jobs.
  • NY_RobNY_Rob Posts: 1,370Member
    95 microns... nice!

    Was that on the vacuum pump for 29 min or was that 29 min after the pump was shut off?
  • IronmanIronman Posts: 5,157Member
    On for 29 min.
    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • TimcoTimco Posts: 2,928Member
    I pull to 200, level off 500 max. That’s Tim Robbins’ head freezing off in Mission to Mars vac level!
    Technical Support Manager, HTP Comfort Solutions.
  • IronmanIronman Posts: 5,157Member
    I'm always doing something else while pulling a vacuum on an install, so it has plenty of time.
    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • NY_RobNY_Rob Posts: 1,370Member
    ^ you must have a pretty nice pump!

    I was reading that it's recommended to change the oil each job... it that accurate?
  • jumperjumper Posts: 1,355Member
    Always happy to hear about pulling vacuum. I gather majority do the nitrogen purge?
  • Solid_Fuel_ManSolid_Fuel_Man Posts: 1,654Member
    No nitrogen=no professional!
    Serving Northern Maine HVAC, and Controls
  • EBEBRATT-EdEBEBRATT-Ed Posts: 5,967Member
    @NY_Rob changing the oil is recommended for each job. If not evacuating dirty or contaminated systems you can probably do a few evacuations before changing the oil. But it's the first thing to do if you are having problems pulling down and the system is tight.
  • IronmanIronman Posts: 5,157Member
    We flow nitrogen while brazing; pressure test with it; and purge with it.
    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • CanuckerCanucker Posts: 553Member
    > @Ironman said:
    > We flow nitrogen while brazing; pressure test with it; and purge with it.

    And I would write a check for whatever you quoted for the job, @Ironman
    Why the heck is that so hard to find and where do you real professionals hide out? I can't seem to find one.
    You can have it good, fast or cheap. Pick two
  • NY_RobNY_Rob Posts: 1,370Member
    Canucker said:

    Why the heck is that so hard to find and where do you real professionals hide out? I can't seem to find one.

    They're hard to find because it costs more and it takes longer to "do it right" vs. quick and dirty that maximizes profits... which is all that some firms are interested nowadays.

    Our neighbor at work just got a mini-split installed for their showroom/office. The "Professional" HVAC firm (with a nice modern work van with fancy color graphic wrap) installed a "Mr Cool DIY" unit with the pre-pressurized linesets that require no purging no evac, no cutting... just connect them and hand the customer the remote... in and out in 2hrs!
    Minimum labor time, no specialized tools (vac pump, manifold set, micron gauge, nitro tank/regulator, flare tools, torque wrench, crowfoot set, etc..) and maximum profit.
    Quick... quick... quick... on to the next victim.. er customer!
  • hot_rodhot_rod Posts: 11,785Member
    I like all the stone work, that is a trade I wish I had more experience. Seems like a fun relaxing home project, stacking rocks.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
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