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Type: Posts; User: Juan Madera

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  1. Replies
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    I am assuming that as it is mid-summer you are...

    I am assuming that as it is mid-summer you are asking this, that your HTM is also making hot water. Most of these I worked on had no problems with the motors on the solution pump/ combustion air...
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    Looks like a pretty cool product that allows for...

    Looks like a pretty cool product that allows for a replaceable copper gasket on a normal male flare! Quite simple and having seen some nasty flare jobs, perhaps it should be the standard?
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    12,260

    Conductance... Term used by the guys that DO...

    Conductance... Term used by the guys that DO vacuum on an industrial scale. At low pressures, there are very few molecules of gas or vapor and SIZE matters! The bigger in diameter and the shorter the...
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    When bought, my home had baseboard hydronic heat,...

    When bought, my home had baseboard hydronic heat, natural gas fired. First months bill (February) was over $400 and I decided right then to gut this guy and install two Ruud Contour furnaces. 94.5%...
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    10,616

    We need a "like" button!

    Many times I read a post and chuckle, then wish there was a quick way to say "nice one" or on the other hand "not so nice" without having to write a post.....
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    What I have read is that a rotary is the most...

    What I have read is that a rotary is the most efficient compressor and certainly is the simplest in design and parts count. I have disassembled both rotary and scroll units and even tho the scroll is...
  7. Nailed by 277VAC from a conduit! Was in an...

    Nailed by 277VAC from a conduit! Was in an elevator equipment room and leaned against a conduit that quite apparently was not earth grounded and had a live conductor in close communion.... Sheesh,...
  8. The distributor also has an orifice in it....

    The distributor also has an orifice in it. Engineers put this guy in there for a reason and I guarantee that if it worked just as good without the distributor, it would not be there as it would save...
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    6,281

    Well, with a water cooled condenser, I feel that...

    Well, with a water cooled condenser, I feel that subcooling is a valid charging method as long as there is not a receiver. When you have a receiver in the system, the pressures and temps you take are...
  10. They really should make these a mechanical joint...

    They really should make these a mechanical joint with an O-ring and bolted flange. Cost a couple of bucks, but save an "L" of a lot of headaches and warranty issues.
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    Keep in mind that many of the "drop-in"...

    Keep in mind that many of the "drop-in" replacement refrigerants have had a large portion of either R290 or R600 to improve oil return. R290 is a fine refrigerant. LP is a bad refrigerant as it has a...
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    28,463

    Looking for some helpful advice on tuning the...

    Looking for some helpful advice on tuning the loop on an old IBEX system. Not sure what the optimal settings for this might be, but at present, the controls seem to be asking for the second stage of...
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    Hydrocarbon such as propane (R290) and butane...

    Hydrocarbon such as propane (R290) and butane (R600) are now approved for use in the USA, but limited to 75g in residential and 150g in commercial appliances.

    R134a..... the "a" is NOT for...
  14. Tech lit for REMD16M-300, Lennox GCS16 from mid 90's

    Anyone have a bit of literature on this economizer section? The smaller GCS16's have economizer actuators where you can get to them. Cannot see how to get to the motor on the -300 as it is behind the...
  15. ...and the old becomes new once again!

    I believe you are correct on this as being an "ancient" vrf system. Made me think also of the old high side float systems having a flooded evaporator.

    I do think that a concept like the liquid...
  16. Thread: Nate Info

    by Juan Madera
    Replies
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    2,234

    took and passed 7 of the nate tests at a sitting....

    took and passed 7 of the nate tests at a sitting. Took the "master tech" test and scored 75 and failed. Nate refuses to let me know what the bar is on this test and the guy who is basically the...
  17. So why can I not use tags? Just started a thread...

    So why can I not use tags? Just started a thread and filled in a few key terms in tags and got the message that I cannot create tags. Searched about unsuccessfully as to what was the procedure and...
  18. VRF type refrigeration racks? Real or imagined....

    In studying the concept of VRF in A/C and heat pumps systems such as the Mitsubishi City system, I could see that this concept would be a true money saver in the utilities department for many...
  19. New global controller for old Alerton Ibex TUX?

    Anyone have experience with using Siemens Talon global controller to supervise old Alerton Ibex TUX points? Looking for a reasonable cost solution to an old '94 install that is no longer supported by...
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    STERO moving back East right soon!

    Just got off the phone with my Stero parts guy who says they are moving from CA to somewhere on the East coast!
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    1,681

    Hi John loves to ski (is that a native indian...

    Hi John loves to ski (is that a native indian name? ;-)

    Question on the APLC. If system has CO2 sensor, which inputs would be used? Cannot find any info on CO2 sensors and APLC.

    Thanks;

    j
  22. Replies
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    28,463

    2ski; Thought the world fell apart on me a...

    2ski;

    Thought the world fell apart on me a week back. Had a wind, rain and lightning event and while I was in one of the controlled areas, I smelled and felt the heat go on. Mind you, we were...
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    Caps normally die of old age due to dielectric...

    Caps normally die of old age due to dielectric stress. (think work hardening of copper and you get the idea) They are rated in breakdown voltage of the dielectric and surges will take them out...
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    Don't let it loose in an ice machine! They might...

    Don't let it loose in an ice machine! They might crossbreed with the slime in there and take over the world..
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    2,045

    You took this in PRC? Malaysia?

    You took this in PRC? Malaysia?
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    Run what ya brung, eh? Knew one "contractor"...

    Run what ya brung, eh?

    Knew one "contractor" who would buy a truckoad of whatever furnace was being remaindered and offer "special" pricing with one size fits ALL. Think shack with 140000BTU 80%...
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    28,463

    Yup, it is Ibex. Software version is Jan/2000 ...

    Yup, it is Ibex. Software version is Jan/2000

    Thanks for the information. I was fearful that if the winbox died that all the systems would go idle... or worse. Now I feel better about backing it...
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    28,463

    Just started working in a building using Alerton...

    Just started working in a building using Alerton control for 9 Aaon rooftops. Install was in 1997 and the monitor and display look it. CPU is antique beyond believability and no one in he building...
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    3,195

    Justice is done.... and with only six jurors in a...

    Justice is done.... and with only six jurors in a capital case!

    What happened to having 12 jurors and them being your peers? Six post gravid females does not sound like a peer group for a...
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    155 or 200? I see you are returning to the...

    155 or 200?

    I see you are returning to the furnace ahead of the air filter. Assume the stale air is coming from the bath rooms? In any case, it is a must that you follow the mfg's instructions on...
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    So you ask, why 370VAC?? Well, you have to think...

    So you ask, why 370VAC?? Well, you have to think about peak voltage on an VAC sine wave. Divide the RMS voltage you see on your multimeter by 0.707 and this will give you the peak voltage the cap...
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    Why would you give up life or health insurance? ...

    Why would you give up life or health insurance?

    Why would you give up smoke detectors and fire extinguishers?

    Why would you give up your DMM?

    Why would you give up your freedom........
  33. Replies
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    Propane grills have a safety feature in the...

    Propane grills have a safety feature in the regulator to prevent dumping tank if hose breaks. Try turning all burners off, lp valve off. Wait a second and open lp valve then burner valve as this...
  34. This is a "green" installation..... Almost...

    This is a "green" installation.....

    Almost makes me believe in evolution as it looks like it is taking on a life of its own.
  35. Rich, who do you think OWNS the insurance...

    Rich, who do you think OWNS the insurance companies? The guys with J.D. after their names...
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    dinna have an ell, so made one?

    dinna have an ell, so made one?
  37. Replies
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    A bi-flow filter dryer is actually TWO filter...

    A bi-flow filter dryer is actually TWO filter dryers in one can with back flow valves to ensure that the crud caught does not get washed back into the system when reversing flow. Whack one up and...
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    How much of that thread goo ended up in the seat...

    How much of that thread goo ended up in the seat of the gas valve?
  39. Replies
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    3,258

    assume...... means ass of you and me! Never...

    assume...... means ass of you and me!

    Never assume anything is right, even from the factory. Found a 15T rooftop that had NEVER been brazed at the evaporator manifold. Someone's fix? Jump out...
  40. Replies
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    5,839

    CO rots steel! Any CO. If you have pulled a water...

    CO rots steel! Any CO. If you have pulled a water heater burner covered with flakes of rust, you have seen CO at work. I concur with the flakes in the secondary. ALSO; you mentioned the Delta T being...
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    A tight home will not need a humidifier! If a...

    A tight home will not need a humidifier! If a customer complains of low humidity they need their envelope tightened up. Once this is done and done well, they will need mechanical ventilation to...
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    I have tow of these in my own home and they have...

    I have tow of these in my own home and they have worked flawlessly for three years. Installed a bunch of 'em over the years and never had a no heat call on any of them.

    All I can suggest from my...
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    .....wasn't flex!

    .....wasn't flex!
  44. This is one of the better ones I have see so far:...

    This is one of the better ones I have see so far: Electricity, Electronics, and Control Systems for HVAC, 4/E
    Kissell | 2008 | Prentice Hall | Cloth; 720 pp
  45. Thread: RSES EXAM

    by Juan Madera
    Replies
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    5,158

    Go to SUPCO.com and look for the tech material...

    Go to SUPCO.com and look for the tech material they have on cap tubes.... Great material and more than you would have ever guessed! Cap tubes are a whole lot "smarter" than flo-raters...

    Could use...
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    These are (very) critically charged systems. Look...

    These are (very) critically charged systems. Look on the tag and notice that the charge is weighed in ounces and hundredths of an ounce. I won't even think of recharging these when you can buy a new...
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    Tbar; Ifiin you have a variable speed blower and...

    Tbar; Ifiin you have a variable speed blower and an inverter driven condensing unit and they communicate, then why would the undersized high efficiency unit not remove the humidity? These puppies are...
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    Mr Right......

    You do need someone who can think. Almost anything can be made to work together using isolation relays and a PLAN.

    Hardest part of this job is finding someone..... the right one.......

    Tip:...
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    Amazing that you got that "lint brush" so nice...

    Amazing that you got that "lint brush" so nice and clean. Good job. Took a while, did it?

    My favorite lint to pick out of the Trane/American Standard lint brush is cottonwood fluff.....
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    Warm to the touch? I think I see two 16ga...

    Warm to the touch? I think I see two 16ga extensions feeding 2 coolers each? How long are the cords? Why is the floor clean and where did the dust bunnies go?

    We all know this is not the best...
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