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    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...
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    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...
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    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...
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    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...
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    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...
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    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 ......
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    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...
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    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...
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    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...
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    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...
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    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...
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    Nope.

    Nope.
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    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...
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    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. ...
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    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,...
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    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...
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    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...
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    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...
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    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 ...
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    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...
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    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...
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    [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...
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    195*?? Hooo ... That's gotta an efficient...

    195*?? Hooo ...
    That's gotta an efficient system, don't it. :whistle:
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    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.
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    Har! But I know a guy who does this. He's a...

    Har!

    But I know a guy who does this. He's a Diesel mechanic. Lives out in the sticks where power is sometimes unreliable - especially in winter.

    He installed a small water cooled diesel...
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    I agree that it is misleading in some ways. The...

    I agree that it is misleading in some ways. The catch is that attempting to add in the power generation inefficiency, and quote a lower system efficiency, is even more misleading - on a few fronts. ...
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    They **ARE NOT** 114% efficient!!! Neither you,...

    They **ARE NOT** 114% efficient!!! Neither you, nor an (800) number, nor the Physics and Engineering Departments at MIT can "CONFIRM" it! No one's religious preferences will change this simple fact:...
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    Your statement is *almost* correct. In the case...

    Your statement is *almost* correct. In the case of electric heaters, you *can* include the inductive losses from the fan motor, because those losses are converted to heat and distributed along with...
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    If you're in Crawfish Country you have a couple...

    If you're in Crawfish Country you have a couple of small producers near you. They may have standing contracts with the Crawfish Country supply chain. Consider yourself lucky!
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    Planning uh Head (sic)

    Are you kidding? That would mean Economic Planning. And that's BAD - with 13 "A"s. Just let the Market Mechanism take care of it.

    Well, it's about to. By the time they get up and running...
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    Yeah - many ceiling tiles here, too. I watch...

    Yeah - many ceiling tiles here, too. I watch about 1000 boiler-tower heat pumps. FWIW - we *do* have a boiler at the geothermal installation, but we don't really need to use it. It was installed...
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    Thanks for your reply ... Yeah - the Trane temp...

    Thanks for your reply ...
    Yeah - the Trane temp switches are going. We worked into the wee hours of the morning because of all those non-resetting temp switches. We will use either a suction...
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    Thanks for the reply! Yes, the assumption here...

    Thanks for the reply!
    Yes, the assumption here is that if we add a low pressure switch it would be wired in series with the temp switch, and read by the circuit board"low press" connection.

    I...
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    Trane "Geothermal" Heat Pump Questions

    Apologies in advance for length. If I don't lay this all out, the questions will come up later ...

    I'm working in a ground-source heat pump installation that has some unhappy issues with it's...
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    Thanks! However, "upg.net" seems to be a...

    Thanks!

    However, "upg.net" seems to be a European web site that has nothing to do with HVAC ...

    I did eventually find someone who was able to send me these IOM's. I had to flip over a lotta...
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    For What It's Worth ...

    Some interesting (to me, at least) info I bumped into while doing a little research about Ozone in cooling towers:

    Relative Antimicrobial Disinfection Efficiency
    OCl < HOCl < ClO2 < O3
    ...
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    I guess I might have a couple of axes to grind. ...

    I guess I might have a couple of axes to grind. It might also be said that I'm trying, admittedly in an edgy way, to do you a favor. I confess that I'm not intimately familiar with the product you...
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    When setting up any burner on an appliance that...

    When setting up any burner on an appliance that regulates stack draft with a damper, the very first step is getting the damper set up for the correct over-fire draft. The rest of the combustion...
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    I'm not a Trane guy, and don't play one on TV,...

    I'm not a Trane guy, and don't play one on TV, either. But I have to pile on and agree with ice_cube_30's estimation of Trane heat pumps. The design is interesting, allowing a lot of...
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    Yeah - Ozone is a great oxidizer. Oxidizers have...

    Yeah - Ozone is a great oxidizer. Oxidizers have been in use for killing bugs for years. Why couldn't an ORP sensor keep the Oxidation Potential in line?

    Sorry, but when I hear sentences...
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    The wine is presumably in glass bottles - not...

    The wine is presumably in glass bottles - not known to be moisture permeable. The wine that's in the Gore-Tex (R) bottles might be a problem ... :^/

    The moisture might also cause problems for the...
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    Ultraviolet will kill organisms, yes ... but...

    Ultraviolet will kill organisms, yes ... but you'd have to arrange for fairly bright ultraviolet to reach every surface in your system. That would mean keeping UV tubes nice and clean, and running,...
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    Um, right. I can't find a place at the York www...

    Um, right. I can't find a place at the York www site to type the model number. Typing the model number into Google, even stripped down, does not lead to a link to an IOM. Just some basic specs for...
  45. There are also dedicated outdoor air systems that...

    There are also dedicated outdoor air systems that provide the minimum outdoor air separately from the rest of the HVAC. These are seldom used when the cooling is delivered with forced air, though -...
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    I don't believe you let us know whether you are a...

    I don't believe you let us know whether you are a contractor interested in doing this installation or are looking for equipment and someone to install it. You also don't say anything about what sort...
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    Searching for York Manuals

    I need manuals for a couple of York rooftops. If there is a search facility for literature on the York www site, they have hidden it darn cleverly. I'm hoping that someone can point me to a way to...
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    On good ol' Bob's web site it says this: Saving...

    On good ol' Bob's web site it says this:
    Saving Energy with Electric Resistance Heating
    Electric resistance heating converts nearly 100% of the energy in the electricity to heat. However, most...
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    With an electric space heater, those "inductive...

    With an electric space heater, those "inductive losses" are not losses. The inductive losses reappear as heat and end up heating the house. This is why it doesn't hurt an electric heater's...
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    EloDrive / Belimo

    There was a long stretch of time between my post and yours. Mine was posted in 2002!

    We eventually decided to take the plunge and use EloDrive valves as water shut-offs for a few hundred water...
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