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The Wire Nut

The Wire Nut

Joined on October 12, 2004

Last Post on December 19, 2013

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Larger building controls

@ December 19, 2013 11:54 PM in steam management system/thermostat

Knowing a little bit about controls, I can tell you that tekmar makes great systems, but if you want to be able to monitor, control and track the operation locally or remotely, the tekmar is not the best way to get there. They do make a new controller that has BACNet and Modbus interfaces, but that presumes you have some sort of Building Automation System that talks those lingos.

You may want to look at the Taco iWorx system, which is a modular system that can handle pretty much anything that makes heat or cold. In addition they have a module which will let you monitor the system locally and/or remotely and provide trending, etc.

Not the cheapest system out there, but its a quality product and has great support.

Alex "WireNut" Marx

BUNY....

@ January 25, 2013 8:43 PM in 2013 Long Island BIG UGLY....who's in?????

Unfortunately Saturday's are not good for me as we are out in PA.So I will unhappily be a no-show. Any chance to make it Friday evening?

Alex "Wire Nut" Marx....

Not sure...

@ October 25, 2012 10:41 PM in How Did They Do?

Shouldn't the pigtail be rotated 90 deg? Probably not as important without a mercury switch but...


Alex (Wire Nut)...

iWorx

@ April 20, 2012 10:19 AM in Direct Digital Controls

Look at TACO iWorx. I know that they've just sold it to a number of schools. It's reasonably priced, modular and TACO bends over backwards to support it.

I just designed a control system using iWorx for a major technology vendor in Grand Central Terminal. It went in and worked on power up!

You can see the product line at
http://www.taco-hvac.com/products.html?current_category=384

The regional reps:
http://www.taco-hvac.com/iworx_sales_reps.html

Sounds like I work for TACO! But no, I'm just enthusiastic about the product!

Alex ("The Wire Nut")....

Tappings

@ March 17, 2012 4:11 PM in Latest Smith G-8 Steamer

As usual, a work of art... How come you didn't use both boiler steam tapings?

Alex...

Honesdale

@ March 16, 2012 3:03 PM in New to Steam...

MrGrady,
Sorry if I missed your name in the thread. Steamhead gave me a heads up on this thread. I'm not a plumber, but am pretty knowledgable in steam (thanks to everyone here!) and I have a house in Whites Valley, just north of the Red Schoolhouse on 670.
I, too, have an old house whose steam system was a nightmare. It now purrs. Unfortunately I could not find any good "steam" guys in the area so I tackled it myself.
I'd be happy to take a look at your system and help you come up with a list of things to have done, and maybe help you figure what you can do yourself, if you want.
I'm only up on weekends (until the summer), and time is tight (my kids need to see me once and while!), but I'd be happy to figure out some time to pay a visit.
Alex "the Wirenut" Marx aka "Stonehouse"...

tN4 and you...

@ January 31, 2012 10:16 PM in Tekmar TN4 Questions

The 274 will regulate a zones water temperature based on feedback from a tn4 t-stat. It does that by regulating the time that the particular zone is "on". The 274 provides the highest water temperature required by all of the thermostats. The t-stats will fire your pumps using the existing relays.

On the radiant floor zones it might also pay to put floor sensors on those t-stats. especially since they are wood floors. The 541 will allow you to have one external sensor...

I think it would work for you. Just remember, there are A LOT of settings that interact on most tekmar systems. Understand what they do and you'll be on top of the game...

Hope that helps...

Alex (The Wire Nut)

Happy Birthday Friend...

@ January 28, 2011 1:13 AM in Happy Birthday Dan Holohan!

Happy Birthday from all of us Stonehousers!

Surrounded (even virtually) by so many friends and such a wonderful family must be the greatest birthday gift of all...

P.S. I understand from Jack Benny that both of you turned 39 this year!

Of course

@ October 3, 2010 6:40 PM in Did someone say BIG UGLY?

The Nut (Wire) will be there. Someone has to be the designated Lexi...

So...

@ October 3, 2010 11:18 AM in 37 zones of radiant heat...(JohnNY)

So, has the nay saying, cavitation cautions, pressure problem prognostications, pump positioning pandering and your heretical hewing to "Green" produced any of the Pandora predicted by the "pumpigensia"?

Disclosure: I had a small part to play in resolving some control issues that were not in John's scope of work, were the responsibility of another contractor, but had a major impact on the proper operation of the hydronics. My recollection is that, outside of the boiler noise, more noise was generated by the other mechanical systems (i.e. the hydraulic pump for the elevator) than the circulators or "all the cavitation"...

Alex (Wire Nut)...

Tempus Fugit...

@ February 18, 2010 1:57 AM in To spit or not to spit...

Hey Frank!

It's been way too long. Life just flies by way too fast...

I don't even get to The Wall much these days...

The vent is the one in the 2nd floor bedroom, the end of the line so to speak. The one in the kitchen is operating fine. I also cleaned the 2 Gortons at the end of the main. Paint came right off, but they close cleanly now...

Boiler has been running well, though I am still getting the white powder on the top of the shell...

Hope you're doing well, and look forward to out next get together!

Alex...

To spit or not to spit...

@ February 17, 2010 10:51 PM in To spit or not to spit...

I'm sure I know the answer to this, but I can't seem to Google my brain very effectively any more...

On my system in PA, I have a Hoffmann 75 that doesn't like to close. It spits lot's of water and steam;  2 good whacks with a closed fist will get it to shut nice and tight.

I tried the cleaning it with warm white vinegar (what is that smell?), which turned the copper shell all sorts of nice shades, but hasn't cured the problem. The valve is about 4 years old, is it time to buy a new one? Time to change to a Gorton #2?

In the true knucklehead tradition, I've replaced it with a 3/4 plug. It's one of 5 vents on the system, so it won't be missed in the short term...

Alex (The Wire Nut)....

Sanity Claus

@ November 6, 2009 11:28 PM in Secret Santa

If you pretend it's CA time, I've made it by Friday!

Count us in, if it's not too late...

Alex

Right here...

@ October 26, 2009 11:28 PM in Drop Header is "incorrect".

Print these out (except maybe mine!):

http://www.heatinghelp.com/article-categories/164/Steam-Piping


Alex....

A classic

@ October 26, 2009 10:08 PM in Mike Mulligan and his steam shovel

Still published and I've read it to my 4 year old a number of times. Since he's obsessed with "Locomotors" it's a fun read.

I remember seeing them when I was young so it would have to have been the early '60s. I remember coal deliveries too!

My brother-in-law had a smaller derilect steam shovel rusting in one of his fields in NE PA. A few years back someone paid him a few bucks for it and came and removed it...

There a a large steam crane mounted on a railroad platform at Steamtown in Scranton.
You can see it here: http://tinyurl.com/yfe8eks

Remember those black gasoline "bombs" that road crews used to use to protect their work areas?

Alex

Living and learning...

@ October 5, 2009 9:52 PM in Vitoden Again

Jeffrey,

Thanks for the input and info. One of the loyal Wall folks sent me the info to access the manuals and I downloaded a full set. Whomever installed the boiler did not leave the set, especially the Quick Start which is a gem...

The more I learn about the Viessmann, the more impressed I am. I hope I have a chance to wire another one!

Thanks again...


Alex...

Manuals...

@ October 2, 2009 10:31 AM in Vitoden Again

Paul,

Do need new manuals. I noticed that Viessmann only allows outsiders to download sales and marketing documents, though you can also get the "Technical Manual".

I don't know from whom they got the Vito. I talked to the distributor who "designed" the system, but he was more clueless than I was about all this...

I just left a message for the contractor that hired me letting him know what I've learned. Namely, mixer out, expansion board in. And to get a new set of manuals.

My only other question is how do the t-stats/end-switches (via the Uponor " zone modules") let the Vito know to create heat? Is that also through the expansion board? I currently have it connect to the "request for heat/program change" connections, but I think that's the root of my lack of DHW priority...

Thanks again...

Alex

Bystander

@ October 1, 2009 10:26 PM in Vitoden Again

Thanks Paul and Glen,

I can't claim any of the "credit" for designing this system. It was originally done by an "engineer" then redesigned by the distributor. The original system had a TACO RMB and the distributor changed it to an iMixer amongst other changes.

The distributor provided a basic wiring drawing but neither the plumbing or electrical contractors would touch it. Since I am "The Wire Nut", they called me in to wire it. It wasn't all that difficult in the end, once I got them to pull the correct wires and fix some of the mechanical installation issues.

Unfortunately the manuals were dumped on the boiler room floor, prior to flooding the floor while installing the solar DHW loop!

I know they were missing the DHW expansion kit which was installed, but I gather the expansion board was not ordered as well. Does that go in to the power supply box?

What's the connection between a call for heat and getting the boiler and system pumps going. Does the boiler sense a drop in header water temp and fire to maintain it?

Thanks again for taking the time to respond.

Alex (The Wire Nut) Marx

Vitoden Again

@ October 1, 2009 2:04 AM in Vitoden Again

In a previous post (http://tinyurl.com/ya4lo9r) I had some questions and shared some of my travails wiring up a Vitodens 200.

I have substantially completed the wiring and they want to fire it up. SInce I am not familiar with the Vitos, and the contractor's distributor can only answer questions he can look up in the installation book, I now turn to my friends and neighbors...

The Vito (with DHW kit) feeds a low loss header. The supply from the header goes to a Vortech type air seperator and then to a TACO iMixer. The mix output is connected to the input side of the "system" pump. The pump then feeds the various manifolds which are controlled by Uponor (tekmar) t-stats through Uponor zone controllers.

The end-switch output of the zone controllers control a "boiler" relay (the Uponor version of the TACO 501). The boiler relay turns on the "system" pump. The relay also as a set of dry contacts that I am using to signal the boiler to start.

Is this the most efficient way to do this? Can I set up DHW priority? Considering it's a mod/con and I have the outdoor and header sensors, do they need the mixer?

Tired minds want to know...

Alex (Wire Nut) Marx...

Thanks...

@ August 25, 2009 7:53 PM in Anyone familier with using a Vitodens 200 with external DHW pump?

Gary,

Thanks for the offer of help! If I run into any more issues you may hear from me yet!


Alex...

Gas and wires...

@ August 25, 2009 7:51 PM in Anyone familier with using a Vitodens 200 with external DHW pump?

Apparently they had tested the line. But between that time and bringing it on-line, one of the other trades cut through it. I'm not sure how they did it, or what they used, or how they could not know they were cutting through 2" steel pipe...

I found this out today when they called me up about turning on the boiler (which had a jammed power switch)...

I just wired it. My impression is that the plumbing contractor had never installed a Viessmann before and required the rep to come out and show them what to do. The electricians refused to wire it, though most of the wiring was just the LWCO and Hi-Temp switch, all 120 volt items.

The back end is just some Uponor (tekmar inside) t-stats controlling some thermal motors and an TACO iMixer and system pump. Not too complicated but it was more than they wanted to handle...

All in a day's work...

Alex...

Time on my hands... Or, what's that smell?

@ August 24, 2009 11:48 PM in Anyone familier with using a Vitodens 200 with external DHW pump?

Thanks to all the help and advice...

I installed the DHW production kit and got the boiler wired and connected to the LWCO and the hi-temp limit switch.

The plumber leaves at this point.

The contractor turns on the gas, and purges the line. I wait outside. I suggest they check the other floors for gas.

It fired up, and I set the time and date. It ran through it's tests and fired up on DHW. Unfortunately it wouldn't kick the DHW diverter solenoid and it pumped the hot water through the low-loss header and eventually triped the hi-limit...

Go through the manual, run tests, call the rep, check sensors, factory default it, reprogram, etc. Out of the blue the solenoid starts working, but we can't get it to fire. Check everything all over again, clear a couple of faults, but no go...

Two hours into this, I suddenly realize that the factory default reset the time to 23:00 hours. The default DHW production time stops at 22:00 hours! Reset the time. Bingo, we have DHW!

Contractor goes upstairs to check for Hot Water. Comes down and asks me to see if I smell something upstairs. Yup, gas. Leaking in the wall, with an audible hiss. Windows are opened and gas shut down.

Tenant is again withouth DHW. I'm not going back until the gas line is fixed and tested.

I prefer wire to pipes!

Alex...
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