Fly by night Knight install

jwade55_3

the indirect tank relief? The boiler should be standard ASME, right?

J

Kevin O. Pulver

Here goes,

My friend Paul is aksing for pics, and my wife can help me now so.... This is on a 15,000 square foot Honda dealership. Knight KBN 399. Pri/Sec, outdoor reset,4 heating zones by circulator and 1 indirect on priority.
3 manifolds are visible, and the insulated 40mm leaders are going to a remote manifold. I apologize for the sheetrock dust all over everything. And I didn't do the plumbing, just the radiant. Things the inspector made me change: #1 pipe the relief and blow down valve drop pipes over to the floor drain. (I used De-ionized water, so what will I be blowing down?) #2 Pipe the expansion tank in copper instead of pex. (all the rest of the pex got to stay:-) #3 Change the relief from 50# to 30# OR upgrade to an ASME tank. (I appreciated that) #4 REMOVE the cap from the boiler drain. (It is a ball valve style, and I thought someone could easily bump it open.) His rationale was that if it leaked we wouldn't know it. I figured a ball valve style won't leak, and if it did, it can't with a cap on it. A maintenance issue and not a safety issue in my way of thinking. Overall I was pleased. He was a very nice guy.

Kevin

hr

Nice install

Did that unit ship with a 50 psi relief?

I can't fault that inspector too much. I would go back and put the cap back on. It prevents someone from hooking a garden hose on it for whatever reason.

hot rod

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jwade55_3

BTW

Great looking install.

J

Mitch_6

Just a side question

second photo behind the boiler is that a gas pressure regulator with an open vent into the room

Mitch S.

Paul Rohrs

Well done Kevin

Nice job Kevin. We have come a long way from our injection mixing and proportional mixing days. You are a true radiant professional!! My only advice is to let Maria keep doing the pump sizing. (Behind every good man, is a better woman.)

Maria, thank you for posting the pics. The home and garden show is this weekend in Lincoln. You have a standing invitation to come.

Regards,

PR

Biggerstaffradiantsolutions.com

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Dave_12

Knight Relief Valve

The Knight 399 and 500 boilers ship with 50 PSI ASME relief valves standard. The smaller units ship with 30 psi standard.

Kevin O. Pulver

Answers

Thanks guys, Yes the boiler is shipped with a 50 PSI relief. He said I could get by without an ASME expansion tank IF I changed to a 30 PSI relief. Nice of him I thought. (the day I installed the tank, I took what I could find) And YES that is an open regulator. Good eyes! It now has a vent out through the roof. And NO I didn't run the gas line. The plumbers did. It is about 65 feet (as the crow flies) of 1 inch Gas Tite buried in the sheetrock wall. (TWO layers of 5/8 rock on EACH side)I didn't think 1 inch would be big enough, (as ME says, "Don't ask me how I know) but noone here stocks anything bigger, and you gotta buy a whole roll to get them to order it. SO, I just figured they knew more about it than I do, and that they were probably going with an elevated pressure system. They eventually did, but that wasn't the original plan, and the utility company really didn't want to at all. First they said they couldn't do drive-by meter readings with that system, and later I guess they admitted it has something to do with the outside regulator being a lot more money?? A little trivia for you guys: What's the difference between a "warehouse" on the south half of this building, OR a "used product showroom" on the south half of this building? Answer: Fire sprinklers! Changing the name designation saved him thousands of dollars. Go figure. The only real problem I had due to poor engineering was the circ for the indirect. I didn't bother to figure up all the ells and feet of copper until the flow switch wouldn't trip. Love those B&G Flo-Cheks! And Yes, Paul, that was the only circ that I sized myself. I called Maria with my new calculations, and she told me what I needed. ;-) By the way, The remote manifold is buried in aforementioned rock wall. With NO access. It had to be taped and mudded to meet fire code. I purged that one REAL GOOD and zip tied the isolation valves OPEN before I left it to the rockers!Kevin