Search:

Type: Posts; User: fixitman

Page 1 of 5 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    3
    Views
    228

    Change IP Address in an ALC LGE?

    I need to change the static IP address in an LGE Router. It was removed from a LAN subnet that no longer exists. I thought I might be able to accomplish this via the console port, as can be done on...
  2. Replies
    1
    Views
    524

    Approximate Age of YORK P-HDD16N09201B

    York HDD16N09201B without nameplates, so no serial number or other info. The model number comes from a sticker on the manual. I'm guessing it's between 15 and 20 years old, but don't see many small...
  3. Replies
    13
    Views
    1,499

    Joey, Great! Thanks for your reply! I'm...

    Joey,
    Great!
    Thanks for your reply!
    I'm planning to let then stay connected when the fan is running. In theory, we will be checking these periodically, and will have the opportunity to catch a...
  4. Replies
    13
    Views
    1,499

    Mechdorn, thanks for your reply. I wasn't...

    Mechdorn, thanks for your reply.
    I wasn't suggesting using any limits as controls. There are three limits - the air pressure switch, a "klixon" disc-type overheat switch, and a fatal overheat...
  5. Replies
    13
    Views
    1,499

    Sam, Thanks for your reply. The thrust of...

    Sam,
    Thanks for your reply.

    The thrust of my original question was about whether significant leakage was likely enough, with modern, proprtionally controlled (pulsed) SCRs, that I should...
  6. Replies
    13
    Views
    1,499

    Dave CR, thanks for your reply. I'm talking...

    Dave CR, thanks for your reply.

    I'm talking about something that goes beyond the "rated" leakage current that the shiny, new SCR allows. I wouldn't fuss about the 5 mA if it stayed there ......
  7. Replies
    13
    Views
    1,499

    Sam, Thanks for your reply. If the...

    Sam, Thanks for your reply.

    If the proportional control voltage to an SCR is at 0V, and that SCR is delivering, say, 200 Watts to the heating element, I'd say it's leaking.

    I've seen...
  8. Replies
    13
    Views
    1,499

    Proportional Electric Heat - Leaking SCRs?

    I'm anticipating using some Viconics 'stats to provide proportional control of some electric duct heaters. The heaters in question use pressure switches to enable them when air flow is present. As...
  9. Replies
    52
    Views
    5,288

    There was once a lot of bragging among BACnet...

    There was once a lot of bragging among BACnet advocates - aimed at Lon - about how BACnet packets could be transported via various and sundry network protocols. We can thank ALC for demonstrating to...
  10. Replies
    7
    Views
    1,109

    Thanks for your reply. Right - motor-starting...

    Thanks for your reply.
    Right - motor-starting inrush current was what I was focused on.

    I'm completely baffled by the circuit it protects, I have to say ... either one of those condenser fans...
  11. Replies
    7
    Views
    1,109

    Thanks to hvac69 and Russ57 for their replies. ...

    Thanks to hvac69 and Russ57 for their replies. Better than the Bussman web site at pointing out the differences between two of their products.

    In this particular case, I knew that the voltage...
  12. Replies
    7
    Views
    1,109

    Nope.

    Nope.
  13. Replies
    7
    Views
    1,109

    Cartridge Fuse ConFusion

    This question about cartridge fuses came up in our shop:
    This "Tron" (Bussman FNQ) fuse is blown, and we don't have the right value in stock. Can I substitute this "Dual-Element" (Bussman FNM) in...
  14. Replies
    2
    Views
    353

    The iLon could be used as an IP/Lon router and as...

    The iLon could be used as an IP/Lon router and as a front end to monitor things and to change CPs. etc. Jaces are often used in much the same way. You won't be able to use the iLon as much of a...
  15. You don't tell us enough to even guess a set...

    You don't tell us enough to even guess a set point. Something in the piping needs the flow through it controlled. What is it?

    Typically, this control loop would include a VFD or a bypass valve. ...
  16. Replies
    16
    Views
    6,351

    Someone's offering us a shilling ...

    Really! So very good to know! Now we can all start replacing our old water source heat pumps with these slick new Multistacks! I'll start right away by selecting a replacement for the 2-Ton,...
  17. Replies
    16
    Views
    6,351

    Yeah - I agree there ... I was called in to...

    Yeah - I agree there ...
    I was called in to look into noise complaints in a large law library. A Trane heat pump above the ceiling in the stacks was making horrible rattling noises. Most of it...
  18. Replies
    16
    Views
    6,351

    Your "everyone" and my "everyone" must be two...

    Your "everyone" and my "everyone" must be two different batches of people.

    Sorry ... I can't get very enthused about McQuay water-source heat pumps. The "Mk IV" circuit board's interface is...
  19. Replies
    16
    Views
    6,351

    More interesting BS with the Trane WSHPs, just in...

    More interesting BS with the Trane WSHPs, just in case anyone is searching the forum for info. I do lots of work in a building that has the "Boilerless Controls" version. The installing contractor...
  20. Replies
    0
    Views
    1,503

    Seek Trane Controls Manual for SCWD Units

    I'm trying to obtain the controls manual for the control system used with Trane SCWD units. They are very similar units to the Trane SCWC, for which the controls manual is titled: CNTRLS-IOM-1 ...
  21. Replies
    2
    Views
    1,600

    Many thanks for your response, and your generous...

    Many thanks for your response, and your generous offer. Sorry for the belated reply.

    A particularly good tech in my area, who worked for Trane for a while, scans a lot of old manuals. Took a...
  22. Replies
    2
    Views
    1,600

    Trane Rooftop Manual - SFCA Model

    Looking for the IOM for an old Trane RTU ...

    Model: SFCA-1003 LD
    Type: 268-515-1-8
    SN: 078M-17623

    Even if you don't have a manual, it would be interesting to know how old it is.

    If you...
  23. Replies
    0
    Views
    533

    [OT] Scot Pumps - Looking for Feedback

    This is a bit off of the HVAC topic, but something a lot of commercial building engineers & techs will have some experience with: Domestic Water Booster Pumps. I'm looking at a proposal to replace...
  24. Replies
    7
    Views
    1,247

    195*?? Hooo ... That's gotta an efficient...

    195*?? Hooo ...
    That's gotta an efficient system, don't it. :whistle:
  25. Replies
    48
    Views
    15,506

    My apologies to Madhat ... The animated smilies...

    My apologies to Madhat ...
    The animated smilies in his message didn't show up until I re-booted my computer this morning.
Results 1 to 25 of 122
Page 1 of 5 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event