csd1 conversion on Buderus boiler, pics

tim smith

Pics for Joe and Ed at Buderus and anyone else. Rebuilt gas manifold and gas controls to meet CSD1 compliance here in Washington.

kevin coppinger_4

ok i'll bite....

what is csd1 compliance????? Complete shut down?

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tim smith

CSD 1 definition, as far as I can figure?

Hard lockout ignition, can't use the power switch to reset, like a RM7800 flame programmer. + test ports between the redundant solenoids in the gas valve. Seperate pilot valve from main valve. Leak test port at outlet of main gas control valve to test for leak by in main gas valve. Etc etc etc. If over 2.5 mbh, then low and high gas pressure switches. Prove of closure of main valve. If power burner, air proving switch, low fire interlock. etc etc. Want any more, god what a pain.

oil-2-4-6-gas

.

sounds like a typical commercial boilers' set of safetiesand interlocks

tim smith

Yes, but Buderus atmospherics don't ship that way

> sounds like a typical commercial boilers' set of

> safetiesand interlocks

Joe@buderus

I believe I did the drawing for this. If it is, your work looks better than my drawing!! Thank you for posting the picture. I will be sure to mention it to Ed. If possible could you e-mail the pictures to jkennard@buderus.net. Thanks,

tim smith

Reply to Joe@Buderus

Joe, I think you did the wiring diagram and we made up the manifold change. Also, used 2 of the lockout boards on this one rather than the drawing using 1 so if lockout occurs on 1 the other can still work as long as no problem on that stage. ps Sent pics to office also.

Firedragon_4

To answer the question

you had Kevin:

http://members.asme.org/catalog/ItemView.cfm?ItemNumber=A09104

CSD-1 is coming into more play every day by the wonderful people who bring you lawsuits. It's also becoming a favorite of code writers since it puts the burden squarely on the OEMs who the stamps are issued to.

One of the ironies out there is that ASME and others expects those that carry the 'H', 'HV' and 'S' stamps to do the right thing. You really can't sell a boiler almost anywhere anymore without those stamps.

If you look at Tim's pictures you can see the 'H' symbol which is the letter H in a four leaf clover in the lower left corner.

I don't know what this is about, nor do I care, but if CSD-1 compliance is not being done at the factory and in the field, that in itself is not a good thing for any OEM to do.

CSD-1, as I said, is getting more notice and will in the future based on the ASME meetings I go to. Up until now the biggest thing that CSD-1 has been referred to is in regards to the banning of rebuilt, non-Listed controls, and failures to properly service and maintain low-water controls.

Just an aside and to prevent a squirmish I said non-listed rebuilts, Sid Harvey's 'remanufactured' controls are listed, FACT!

S Ebels

CSD-1=PITA

I've run into a couple of these also and had to bring the boiler into compliance. What baffles me is why the safety control standards are so much tougher for boilers than for any other type of fuel fired equipment. When was the last time you saw anything like that on a rooftop unit of equivalent firing rate?

Firedragon_4

ASME covers

boilers and pressure vessels, UL, ETL, TUV and others cover everything else. It's a pressure thang!

I was taught in the USAF that 1 psi of pressure has the equivalent 'motive force' as 1 oz. of dynamite. That's motive, not explosive, but when you've seen the pressure explosions I've seen ya gotta wonder???

dconnors

Nice work Tim

Not sure I would want the responsibility that you have undertaken but..... CSD-1,IRI,FM and a few other codes are here to stay. We didnt govern ourselves so someone did it for us.

richard lampson

Buderus and CSD-1

CSD-1 controls are required on every job we do in the plan and spec market when the boiler is 400mbtuh and higher. Question "will Buderus offer this as an option for commercial jobs when it's required by the state boiler inspector?"

[Deleted User]

In the once \"Free State\"

of Maryland, state code requires that a heating or hot water supply BOILER installation meet CSD-1 Requirements when installed in "any public access building." By state definition, that is ANY building except a single family home or Church, without a school or attached Rectory. With the Rectory, you're covered. This definition supercedes minimum btu input requirements.

CSD-1 Part CW requires double limits & a LWCO on water boilers & double limits & 2 LWCO's on steam boilers. The H/W LWCO must be manual reset & testable. Ditto for the lowest on a steamer. The high limit must be manual reset. No strap ons. Hang all that on an 80 mbh gas boiler.

That boiler for the house w/ the rented room just got real expensive. How much money must be spent to make all pressure vessels 100% safe? Can the Federal Reserve print it fast enough?

dconnors

Code options

We offer CSD-1 and other options on all of our gas trains for the power burners. This would be the G315 series up to the G615 series as well as the SB condensing boilers. On the atmospheris G334x series boilers there is no stock conversion yet. These have to be field modified as you have done.

Firedragon_4

Actually Ron,

you're the closest on this issue, FACT!

When push comes to shove ASME is the thing most states fall back on in regards to boilers, REGARDLESS of Btu input. If the boiler or pressure vessel has an H stamp it must comply with CSD-1. I saw a boiler company take a big hit over this issue 3 years ago.

If the building code states that the boiler must be approved, all 50 do, it's ALWAYS ASME. Then, the control systems must be ASME/CSD-1 compliant.

Had a case where every tee was crossed by MA State Code(s) across the board, except CSD-1. The OEM lost and had to pay the damages based on the ole 'failure to notify' loophole since it was below their $500,000 deductible, ooooops!

As to where it will end, simple!!!

When no insurance claim is filed for a boiler failure, fire, explosion and the resulting property damage, in plain English, NEVER!

S Ebels

CSD-1 Atmospherics

Viessmann's Vitogas 50 comes set up CSD-1 in the larger sizes. From memory, they are 550K, 800K and 1.1M BTU. All assembled right out of the box. Really nice package on the one we did last year.
The <200K ECD series does not.

tim smith

Ron, CSD1

> of Maryland, state code requires that a heating

> or hot water supply BOILER installation meet

> CSD-1 Requirements when installed in "any public

> access building." By state definition, that is

> ANY building except a single family home or

> Church, without a school or attached Rectory.

> With the Rectory, you're covered. This

> definition supercedes minimum btu input

> requirements.

>

> CSD-1 Part CW requires double

> limits & a LWCO on water boilers & double limits

> & 2 LWCO's on steam boilers. The H/W LWCO must

> be manual reset & testable. Ditto for the lowest

> on a steamer. The high limit must be manual

> reset. No strap ons. Hang all that on an 80 mbh

> gas boiler.

>

> That boiler for the house w/ the

> rented room just got real expensive. How much

> money must be spent to make all pressure vessels

> 100% safe? Can the Federal Reserve print it fast

> enough?

tim smith

Ron, CSD1

CSD1, also requires on boiler 400mbh and over have a leak test cock on the main fuel shut off, independant pilot valve or valves. Hard lockout on ignition, not resettable by power interruption. and few other misc, until you get up to 2.5milliopn btu, then high and low pressure switches and prove of closure on main gas valve, combustion air proving switches and I would seriously have to stress my brain for the others. Just a tidbit for the cellar.

EBEBRATT-Ed_6

MA. being the most regulated State in the country has had most of this stuff for a while.

harder and harder to keep up with it all.