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Larry (from OSHA)

Larry (from OSHA)

Joined on November 24, 2003

Last Post on July 16, 2014

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Will do

@ May 22, 2009 11:11 AM in My neighbor needs prayers....................Mad Dog

Matt, Please know that you have our thoughts and prayers for your friend. Cancer is an illness that is unfortunately close to all of us. Larry

What Dave said!

@ May 7, 2009 9:25 AM in Let's all wish Alan Mercurio a HAPPY BIRTHDAY

Alan, I'll second what Mr. Yates said. Happy B-Day and many more. Larry

it's only a small spot.....

@ April 16, 2009 11:02 AM in What's wrong with these pictures??? (ME)

Actually, I wouldn't be surprised if that spot got damaged somehow and is not an indication of the product normally. Perhaps pinched or cut. If it was my store, I'd get it out of view, but apparently not everyone cares about that sort of thing. Larry

I wasn't there, but

@ April 13, 2009 9:20 PM in Wetstock 2008 One Year Anniversary is today

I was at the Minneapolis Wetstock and the memories are every bit as good. I remember seeing several well known names and meeting a good number of them too. The tables were set up with all the different topics. Jerry Scharf was holding court on the finer points of hydronic engineering. Tim Doran was mesmerizing many with not only radiant heat but some really cool (no pun) stuff about radiant cooling. I was amazed. I believe Hot Rod was showing off some amazing art in the way of a mini bike powered by a particular green circulator and talking about solar this and that. Alex was there with cool electrical connectors and new baby bleary eyes. And then there was the table where Ken Secor was holding court on all things Flat Rate or Time and Materials. John Hall was there for the press, and Mr. Bean helped Dan present the Carlson-Holohan Award. I remember seeing Jerry and Ruthe but didn't get to spend any time with or meet them. My loss. I met lots of great people who didn't seem to mind that I'm with the Gov't. and all in all was one of the best days ever. I appreciate the experience so much. Thanks Dan. Larry

and what about

@ March 12, 2009 9:12 PM in Gas Safety

the case of ABOVE the uel? The bottom line is if you don't test, you don't know... My limited experience with gas explosions gave me the perspective that coming down into the explosive range from above results in a greater chance for a bad experience. The combination of fuel, oxygen and ignition source (which was a call for heat) occurring at the same time gave this building the chance to expand rapidly. No one died but several were injured. Larry


@ January 31, 2009 9:36 PM in Giannoni heat exchanger

You've had your Vitodens going for a while, have you seen anything remotely resembling these types of deposits attaching themselves to your heat exchanger? I would suspect that at least some of the manufacturers that use this particular HX have examined and determined what this crud is. Larry

Hi Ken

@ January 31, 2009 9:13 PM in Giannoni heat exchanger

It's administration not association, but here in Minnesota, I work for the state so it's a little different anyway. Yes, those pics are before cleaning. And I totally get your point about the blocked drain switch. I'm still very curious about all these pics you have of severely screwed up boilers. I wish I could determine which one you are talking about, so don't keep us in suspense too long. This whole high efficiency thing has so many twists to it. I look forward to what you can share. Larry

some comparison

@ January 31, 2009 5:44 PM in Giannoni heat exchanger

All those pics are quite amazing. Have to wonder about the installs and any owner involvement - like even looking in the boiler room at least once in a while. These are pics of mine at one year in service for space heat (3 zones baseboard) and DHW. About 9300 hours of power on and 3750 total hours of run time. Larry


@ January 26, 2009 11:34 PM in Dear Old Dad

Sorry for your loss. The little bit that you have shared about your Dad paints a very nice picture. And I'm sure it's just a very small part of who your Dad is. My deepest sympathy to you and yours. Larry

maybe this would work

@ January 24, 2009 12:18 PM in 120 V freeze protection? if you can keep them from turning it up! Larry


@ January 20, 2009 10:50 AM in Going in for Surgery

Lots of people holding good thoughts for you, myself included. Hope you have a speedy and complete recovery. Larry

glad you are home

@ January 17, 2009 4:31 PM in I'm Home! - Alan R. Mercurio

Alan, Feel better, try to take it easy and don't over do it. Maybe some chicken soup would be good. Take care, Larry

color might matter

@ October 31, 2008 9:27 AM in Is painting new radiator neccasary?

You might want to look at this: As Dan says, It pays to wander off the Wall. Larry

Alex and Tim

@ October 13, 2008 9:33 PM in Knight cleaning

I don't know what the coffee grounds like stuff is. I suspect it is a combination of both air and gas contaminants that precipitate out during combustion. As far as pitting, I did not see anything that appears to have actually compromised the surface of the HX. My uneducated guess is that if this stuff was left in place for a long time, it might lead to some corrosion, but again, just a guess. I did not replace any parts, but I've got them if I need them. Tim, the recommended time frame for service/cleaning seems high to me too. I believe that the Munchkin HX is the very same one. The major difference between them is the way they deal with the sealed combustion. As far as the hours of operation, one aspect that I think is noteworthy is the number of hours operating below 50% output. This unit ran 2128 hours under 50% and 848 hours above. There were 744 hours of domestic hot water production. During the shoulder seasons, a single zone will call and not be able to shed the minimum output of the boiler. Hence the cycling. Not perfect, but not too bad either. Larry

My take:

@ October 13, 2008 9:13 PM in Customer Service

It can be very frustrating trying to get things working. So if the part is bad and it's the right part, it should be exchanged, no big deal. If it's the wrong part that you asked for, a re-stocking charge is in order and get the right part. Again, no big deal. Perhaps there is some information about this transaction that has not been shared. Going into a wholesale parts distributor and trying to buy retail can be a challenge. But, it doesn't do anyone any good to alienate any customer. Good customer relations are always returned in multiples. My $0.02 worth. Larry

First annual service

@ October 13, 2008 12:35 AM in Knight cleaning

Its been one year since installing this Knight 80 which is attached to three fintube baseboard zones and an indirect. Operation has been flawless and about 30% less fuel used degree day adjusted. Following the service manual instructions, the burner was cleaned with compressed air with no visible dust being blown off. A couple of insects were toasted on the inside of the burner. The HX had a small amount of the usual coffee ground type debris which was vacuumed out. Using hot water only, the HX was cleaned off and the space between the tubes got the credit card treatment followed by lots of plain water flushing. Condensate trap was cleaned to get the crud that washed into it. Both the igniter and flame sense rod had a very light coating which was lightly sanded off. The replacement igniter, flame rod and gaskets will remain as spare parts on the shelf. There are some stains that remain on the HX and I dont know if chemical cleaning would have taken them off, but the factory doesnt specify any so I didnt use any. I can see where prolonged contact (several years) with the coffee crud could possibly lead to surface pitting. The last part of the cleaning was the water side flush which resulted in a minuscule amount of debris. Lochinvar has a service schedule of 10,000 running hours or 10,000 ignitions. After one season, run time is nowhere near with only 3718 hours firing. There have been 9855 ignitions, so it was getting close from that perspective. Interestingly, the factory only requires HX cleaning when the exhaust temp is more than 54 degrees hotter than the inlet water. Mine was nowhere near that. The one thing left to do is a combustion check. By the way, a big thanks to Kal for the heads up on the recent service tip regarding the igniter and sense rod lead connectors. Larry


@ October 9, 2008 7:30 PM in mercury switches

You can send them back to Honeywell. I was recently at one of their plants and they have a dedicated area for receiving those old tstats. I'm sure you can get the info direct from them. Larry

Hey TJ

@ October 8, 2008 9:57 PM in Larry @ OSHA

Check your email. Larry

My deepest sympathy

@ September 23, 2008 11:29 PM in Our friend, John Hall, lost his Dad today. (Dan H.)

So sorry to hear of the passing of your Dad. My thoughts are with you and your family. Larry

This is getting old

@ September 21, 2008 10:02 PM in What's that copper worth?

This is going on with all too much frequency. For a few bucks for scrap metal, whole buildings are being blown up. One of these days, someone is going to be killed. Larry

Hi Alex

@ September 17, 2008 9:29 PM in Venting for a Mod / Con

You've got a great location to be installing anything. The North Shore is such a wonderful place to be. Please take my advise as only personal experience from a homeowner. I have a Knight vented with a concentric through the roof. I think either way will work for you, but the optimal way is through the roof. With side wall venting, the biggest concern (in my opinion) is visual. A plume of vapor visible out the window may spark some complaints. The roof vent will give the best results for both visual and clean intake air. Good luck with what ever you do and please post some pics when you are done. Larry


@ September 17, 2008 12:58 AM in Safety glasses

Really sorry to hear of your injury. I hope you can take advantage of any resources available to you in the way of workers comp or other insurance. Larry
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