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Mike Reavis

Mike Reavis

Joined on December 25, 2003

Last Post on November 21, 2013

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A potential scenario

@ November 21, 2013 8:09 AM in Burnham Boiler Casting Problems

Apartment complex with appreciable amount of water in the system. Convector radiators requiring higher output circ pump. Pump connects radiation directly to boiler. Power outage (fuse, starter heater, etc) to the pump. 2-6 hours goes by when the tech, or maintenance man either repairs it, or cuts on the back-up circ. Boiler is not interlocked with pumps to enable only with flow. Boiler reset control responds to cold outdoor temp. and has boiler temperature turned up. Boiler goes from 140-190 degrees to 60 degrees in moments.
Under these conditions only a miracle, or a supervised start-up can save the castings.


@ November 21, 2013 7:53 AM in CryptoLocker malware

I had heard of this, and am unsure as what to do.

I have just unplugged my back-up harddrive. Thanks for the nudge.


Imagine the Rep. extolling the features and benefits of his tank!

@ February 7, 2013 8:03 AM in Old Compression Tank? you really want to install another one of those riveted, pricey copper tanks Mr. Contractor?....

it works!

@ February 6, 2013 10:18 PM in Old Compression Tank?

The granite top--not so much--but they are looking around for a replacement

This makes more sense now that you mention it

@ February 6, 2013 7:32 PM in Old Compression Tank?

The pipe about half way up the tank probably relieves to the roof.

Wow, look at the access for the original venting through the concrete!

@ February 6, 2013 6:49 PM in Job pics!

Can you spell "Change-Order?"

Old Compression Tank? CYLINDER RADIATOR pic.

@ February 6, 2013 6:39 PM in Old Compression Tank?

Came across this beauty in a solid, yet unloved building in the "Pig Town" neighborhood of Baltimore. Despite the triumph of the Ravens there is allot of "Vacants to Value" action in Charm City.
Anyhow, I assume that this is an old version of a compression tank. Someone here must know about these and can fill in the blanks. If I am correct, it is located on the highest floor, so that it can be much smaller than a new tank which is generally located near the boiler. (the boiler has to be in the 400 to 750 k range--never saw the beast)
The tank is out of service now. Shame it isn't made of copper, kid being ready to go off to college and all......
Radiator photos at the same address.


@ February 6, 2013 6:07 PM in OLD TEKMAR CONTROLS STOCK

Unused and Unopened--just not "new" as these are at least 10 years old. Some are discontinued, and it may be easier to replace what you have there rather than upgrade to new product/model number.

Make an offer--we can discuss prices. I will need to check any offers with the owner of the controls. I can power the control up before I ship it to you if you don't mind it being opened.
There are a few other sensors and timers which didn't make it to the photo at the left.


6 Munchkin MC-99's for sale

@ November 13, 2012 10:58 AM in 6 Munchkin MC-99's for sale

New in the original packaging, unopened and complete. Heaters are 3-5 years old. Been in the company's inventory. Call for pricing. Literature link below:

Frank Schieffer, Northeastern Supply, Baltimore


maybe try these guys


they may know someone who has these items.

There was a company which was part of The Brass Knob in Washington DC Brass Knob Backyard) However, according to their website, the Backyard ceased operations this past Spring. You might want to call the Brass Knob to see who bought their inventory.


Try a Canadian Rep.

@ January 12, 2011 5:26 PM in roth multitherm
I googled roth multitherm, and multitherm.
I do not know anything about it.

With Regards,


We can stop the competion now!

@ December 23, 2010 5:24 PM in We're having a contest!

This made me laugh harder than the 5 gallon bucket sewer pit from a previous post!
Shame we can't recycle foam padding or other formidable home waste to heat or keep houses comfortable with.

yes, that was what was on the radio

@ December 23, 2010 9:34 AM in We're having a contest!

followed by In-a-gadda-da-vida, Comfortably Numb, Born in the USA,  and Kashmir.  The radio was turned off half way through "Defying Gravity" (Musical "Wicked"). 
Are people finding ASU for steam service with the recent cold snap?


I think I had a similar repair on my 63 Chevy Belair

@ December 21, 2010 8:16 AM in We're having a contest!

the rust on that car was unreal.  6 cylinder with a two-speed trans I think.  You could stomp on the gas, the car would heave and make a great roar, and about 30 seconds later you were going about 30 mph faster. 
A camera is a valuable thing on service calls--congrats on your pic.

And this one which defies explanation,

@ December 4, 2010 10:33 AM in We're having a contest!

And seemingly, gravity.
And don't give me that "unsafe" lecture--this is problem solving at its best.

How about some manufacturer's parts that we can't replace any longer?

@ December 4, 2010 10:29 AM in We're having a contest!

My favorite, the vent damper.
The other photo "imported steel?"

More bad steam piping

@ December 4, 2010 10:22 AM in We're having a contest!

Being that I am in the photo vault anyway

To their credit, the contractor did not cut away the Differential Loop and associated piping.

@ December 4, 2010 10:13 AM in We're having a contest!

However, the decision not to head for the exits on this oil to gas conversion haunted them.
It did give me a great opportunity to photograph the Differential Loop while still installed.
In the battle between boiler installers and physics, physics takes the day.

Well, the height of the water is almost above the highest radiation

@ December 4, 2010 9:18 AM in We're having a contest!

so it works!
Not exactly up to code, but it works.  How is that irrigation pump holding up? 
I know I would have congratulated this guy for his ingenuity.
This is the stuff that makes me smile....

nice boilers

@ December 3, 2010 2:44 PM in We're having a contest!


your photo brings to mind this little standard:

@ December 3, 2010 2:44 PM in We're having a contest!

For Want of a Nail

For want of a nail the shoe was lost.
For want of a shoe the horse was lost.
For want of a horse the rider was lost.
For want of a rider the battle was lost.
For want of a battle the kingdom was lost.
And all for the want of a horseshoe nail.

I got a good chance at this one.

@ November 30, 2010 5:39 PM in We're having a contest!

I used to take my camera on my "rounds".  I will post the photo after I find it.

I didn't have my camera the one day that I witnessed a renovation contractor move the standard tank-type water heater to the outside wall, near to the clothes washer--where it wouldn't be in the new walkway.  As you can imagine, the temptation to vent the water heater into the operational dryer vent was overwhelming.......................... Thankfully, they were not "overcome".

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