Federal Housing Apts. - Munchkins

Ken_8

We were asked to design/build a replacement heating system at a nearby, HUD funded. housing authority.

Two 28A's with P/F 'J' gas power burners and an older Honeywell outdoor reset, connected to a 3-way mixing valve, is what heated the 40-some tenants.

The combined input of the two 28A's was around 4-million BTU's.

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Ken_8

During...

We found the actual heatload to be 700MBTU's. (We use 0°F as the design temp, rather than the ASHRAE design temp of 13° for our area). Seniors think 80°F is just about right anyhow...

One of the two Smiths were pulled, giving us room to sneak in both 399MBTU Munchkins on the space created by jerking one 28A out.

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Ken_8

After

All the existing piping connections (there were four independent circuits) - and the Smith itself, were cut out and switched over - getting the 40 or so senior citizen residents heat, in just under 7 hours.

I am extremely proud of the crew. The Munchies fired up without any problems whatsoever. This Monday, we go back and tweak all the settings and turn the system over to the Housing Authority.

Besides the final tweaks, three more things must be done. Paint the entire boiler room, install a dropped ceiling and insulate all the pipes





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Dan Foley

Nice...

Nice job, Ken. Will you be able to monitor and document energy savings? I'd anticipate a substantial drop in fuel usage. What are the heat emitters in each unit and how are they controlled? What type of air separator is that? Excellent work, as usual! -DF

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Constantin

I wholeheartedly agree...

... Kens crew did an excellent job installing these units. I'm sure the small size of the Munchkins will raise more than a few eyebrows considering the heft of the units they replaced... Were the Smiths replaced because of economics or because they were at end of life?

It's also simply amazing to consider that this apartment complex was apparently over-powered by a factor of 5. Maybe we should start a competition to see who can find the most grossly-oversized system as a function of expected heat loss...

Ken_8

Thank you Dan,

It's made by ITT and everybody calls them a roll-a-trol.

Cool concept. The centrifugal force of the offset inlet and outlet create a vortex within. The theory being that the spinning (and denser) water will force the air to the center, where the huge vent tapping is centered at the top - where air would naturally collect due to boyancy.

The large volume within the separater slows the water down while inducing the centrifugal spin and makes these a very inexpensive yet effective way to get the air out in a hurry!

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J.C.A._3

NICE JOB!!!!

You know that the unused space now becomes a store room....right? When the crew goes in for service, they will have to move half the world to get to the beautiful work they did.
The folks living there will be comfortable and the taxpayers actually will se a return on their investment. Oh MY! There's a change. Great work guys. Chris

Ken_8

Thanks Connie,

We have had numerous problems with intermediate sectional cracks and despite us downfiring the burners to minimize stress, both had the classic Smith elastomter ring boss fractures that we detect easiest with "blocking dye" checks. I think we replaced two sections in each over the past 10 years and knew at least two more in each had gone south.

As is typical, the original engineer had no clue on what a heat load is and spec'd. the Smiths based on what used to be there. What he failed to realize was that the entire load for domestic hot water was switched to another boiler room 400 feet away. Without the entire building's D/H/W load in place, the Smiths were grossly oversized.

Then too, feds (and schools) always want redundency. The assumption being, when one boiler fails, the back up can handle the entire load.

This one was wired for true lead/lag. Of course now, if one boiler goes daon, we'll have cool (and very irate)seniors on a design day (;-o)

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lchmb

one word

Incredible!!

Weezbo

my my my...now that does look sharp *~/ hats off Ken.

fine workmanship. *~/:)Where booketh the condensate drains?

clammy

nice work

Ken great work by you and your crew only goes to prove there are those out there in jersey doing top notch work you should quite proud of a job well done i would gather that the fuel saving should be impressive .Just wondering how did you termante the vent s thru a side wall or did you use the existing chimmey as a chase ?The electric control panel looks alot better again great work peace clammy

hr

Nice install, Ken

good call on the roll-a-trol.

Recently a large hospital nearby had a power plant rehab. I'm told a 36" diameter (pipe size) roll-a-troll was installed. I could probably sleep inside that! I hope to get a pic someday.

My B&G rep is Blackmore/Glunt in KC. My rep tells me Mr. Glunt invented the roll-a-troll and licensed it, maybe still produces it, for to B&G?

hot rod

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Ken_8

The venting and drains looked like this...

Being as anal as I am, either the conduit clamps will be switched to 2-hole copper straps - or the other way around Monday. If that's the only screw-up I find, I'll be a very happy camper.

The vent kits are HTP's. They are almost directly above the old louver - which we will also brick/patch up Monday.

If it doesn't stop raining here, we may go there by ark instead of the vans

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Larry_10

*~/:) .....

somehow i am Larry now ) the internet is wierd well whatever ...i though that you would like to hear i vote Ark. vans dont float worth a Darn

hr

Perhaps a condensate neutralizer

if that is a cast iron drain, and or Ptrap.

hot rod

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Ken_8

Good eye,

We had a minor concern over the mildly acidic condensate and used that floor drain because it only runs four feet into a large sump pit that has ~100 gallons of ground water in it. We threw a bag of limestone in the pit and will take readings tomorrow to see what the pH is in the pit. With all this rain, it may not be a reliable sampling/test but I can't obsess over it too much.

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Gary Hayden_2

Great Stuff

Ken

Very nice looking / engineered project and well done. Great pictures.

Where are they going to put the basketball hoop now that you have greated so much room

Gary

Jim S

Very nice

Two thumbs up to you and your crew.

The fuel savings should be pretty dramatic. I`m wondering what those ball valves are for along the wall where the pumps are located a future zone of some sort?

By the way how, many guys were involved?and did they do the demolition and removal as well?

Once again ,nice work.

eleft_4

Ken,

to quote you "you are sumpin else" I felt was praise from a master of his craft.

Now from a single handed admirer of this craft I must also say... you are sumpin else!

Good planning and execution.

Now a question if I may. Do the tenants have the ability to control the temperature in their space with out using a double hung thermostat?

al

Mark Eatherton1

I now see why you're paying your techs so much money...

It's because they all have such horrendous massage therapist and chiropracter bills from hunching over to work on those short little boilers:-)

Unistrut does wonders for the human back! (and it give you a great place to park the 5 gallon size condensate neutralizers!)

Great work, and you're saving US money in the long run.

ME

Dave Yates (PAH)

Yowza

That's nice! One for the books and a great promo-shot for HTP's prodfucts.

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Mark Eatherton1

I hope...

that was a dyslexic freudian slip...:-)

ME

Ken_8

Man-o-man...

I wish we had piped ours like that. We have to leave our instruction manual on a wall shelf!

Perhaps we'll change our piping around...(;-o)



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Ken_8

Sort of.

There is no individual 'stat (in any form - except the "dbl-hung 'stat) in the individual apartments. There is however the most overlooked balancing device on the HWBB's in each room. That being, the "blade" that runs atop the HWBB itself.

The position/orientation of that blade has a dramatic effect on the output of the BB; in fact, it reduces output by 50% when closed!

By sampling the coolest apartment and meeting that design temp with the HWBB blades wide open, we can "back into" the remaining comfort issues via blade orientation(s) - and then resort to the double hung 'stats if necessary(;-o)

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bob_44

Rolairtrol

Great work Ken!

ScottMP

Ken

Sorry I came late to this post, great work.

Nice design and layout. I am sure there was a WOW factor from the powers that be. I may have missed this but how are you handling the lead/lag on this ? What control ?
Does it switch and how often ?

Very Impresive work Pal.

Scott

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Ken_8

The Vision 3 controller does

all the tough stuff.

Later today we tweak it all and set the parameters.

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Robert O'Connor_7

Ken..

As always, nice job!

Robert O'Connor/NJ

BillW@honeywell

Lookin' good, Ken!

Another example of superlative work. Keep raising the bar, Ken!

S Ebels

A Rolair

Is one of the best air sep devices ever made. They work better than most because they trap the big chunks of crud as well as the air. Nice nice design and workmanship by you and the crew Ken.