Discontinued part

tcas

Anyone have any thoughts on where I can find a discontinued White Rodgers Gas Valve. 36D27-406. It’s for a HB smith gas boiler

EdTheHeaterMan

you don't need to use an exact replacement .there maybe something else you can use

Is this a standing pilot valve? is it a single-stage or two-stage? Can you post a picture?

tcas

We were told there is no replacement, would you happen to have a suggestion?

tcas

I’m not sure that will work. Thank you for your help.

EBEBRATT-Ed

You can find a replacement for virtually any gas valve regardless of what you have been told.

We could use some information
What boiler?
Standing pilot?
Hot surface ignitor?
spark ignitor?

tcas

It’s a hB Smith gs 110 w7h boiler. hB smith told is the part was discontinued and there is no replacement. I’m not sure about the ignitor

tcas

I’m so appreciative of all your help, what picture, would you like?

EdTheHeaterMan

So far, what I have found is that WR does not have an exact replacement for this valve anymore. The Model number 36D27 is a 24 volt valve that can operate on LP or Natural Gas. It has an Internal regulator and a Solenoid Line interruptor with NO Step function. Meaning it is probably fast opening the -406 portion means the was made specifically for HB Smith. Now i cant find anything on the D model designation 36D27-406 but I believe it means that it is a designation for a single stage valve and what type of ignition (probably Standing Pilot) but I cant be sure.

It may also be the Cycle Pilot which I believe to be the mercury flame sensor valve. If that is the case then you may want to upgrade with this kit from Honeywell.
https://www.supplyhouse.com/Resideo-Y8610U4001-Intermittent-Pilot-Control-Conversion-Kit?gclid=Cj0KCQiAmL-ABhDFARIsAKywVackljyCjqGHyw12p17s4MDwRFmKa5boEAGG9HDjqd2yk3ibJ3jeGdgaAiPKEALw_wcB

If the OP can post a picture, that will help.

Yours Truly,
Mr.Ed

tim smith

Call White Rodgers tech support and they can match up, or Honeywell contractor tech line and they will pull up specs to cross over. Almost always come up with one that is appropriate.

Steamhead

Is this for one of the old electric ignition systems that use mercury-based flame sensors? Pics will help.....

tcas

Here is the gas valve

tcas

EdTheHeaterMan

looks like the standing pilot model. Does the pilot stay on all the time?
I don't see a thermocouple for proof of pilot. So there must be another way to detect the pilot flame. can you post the wiring diagram? It is usually on the inside of a door panel.

EdTheHeaterMan

It does not look like the Cycle Pilot which I believe to be the mercury flame sensor valve. but you can still use this kit if there is no other replacement
https://www.supplyhouse.com/Resideo-Y8610U4001-Intermittent-Pilot-Control-Conversion-Kit?gclid=Cj0KCQiAmL-ABhDFARIsAKywVackljyCjqGHyw12p17s4MDwRFmKa5boEAGG9HDjqd2yk3ibJ3jeGdgaAiPKEALw_wcB

I know this is expensive but it is a last resort if your only other choice is a new boiler.

Yours truly,
Mr.Ed

tcas

I do not have a wiring diagram.
Is this of any help?

FDNYRETIRED

https://parts4heating.com/Heatmaker-36D27-Gas-Valve-Type-201-p/36d27.htm

EBEBRATT-Ed

Somebody has been messing with it there's a gas pressure gauge hooked to it and the regulator cap is missing.

@tcas

Maybe if you told us what is going on with the boiler and gas valve we could better help

EdTheHeaterMan

Here is your IO manual. go to
https://www.smithboiler.com/html/litlibrary.asp
then type in GS110 where indicated


It appears that you have a Direct HSI ignition system and the gas valve will only open after a pre-purge and ignition warm-up period. There is only a one second trial for ignition then there will be a retry. After the 3rd retry, the control will lockout.

Honeywell VR8305 valve will do the job.

https://www.supplyhouse.com/Honeywell-VR8305M4801-Standard-Dual-Direct-Ignition-Gas-Valve-Single-Stage

I just have one question before you purchase the part. If you make an expensive repair and the same problem happens, What will you check next?

You may just need to clean the flame sensor rod and ground rod

tcas

Thank you all for your help. The boiler has a gas leak. Have consulted with HB Smith. Told to clean it, which was done. Next suggestion was to change the gas valve and if that does not solve the problem, it’s time for a new boiler. Both HB Smith and WR, said no longer make the gas valve and there is no replacement suggested by either company.. We’ve searched and can not seem to find the gas valve anywhere. Seems like we are heading to a new boiler.

neilc

yeah, but,
you don't "clean" gas leaks,
what was leaking where?
or what got cleaned?

PerryHolzman

I'd look at the replacement EdTheHeaterMan recomended if this was my boiler. Its a very small fraction of the cost of a new boiler and installation (and I would not consider it a high cost part)... You might need to do some re-piping of the gas line.

Perry

SuperTech

Gas leak as in natural gas? Or flue gas due to the boiler becoming plugged up with soot? 

The Honeywell Y8610U electronic ignition retrofit kit should be a perfectly fine option for your boiler.  I've converted plenty of standing pilot furnaces and boilers with that kit. Of course White Rodgers wouldn't recommend a product from a competitor.

Tim McElwain

In order to use any retrofit and be legal you must have a factory cross reference listed somewhere or get permission from the boiler manufacturer and get it in writing.

HomerJSmith

The question is: Why do you think you need a new gas valve? What are your symptoms that led you to believe that you need a new gas valve?

What do you mean that "the boiler has a gas leak?". I really don't trust homeowners making a diagnosis. It can throw you off.

EBEBRATT-Ed

Might as well forget this one. You can't fix anything if the information isn't forthcoming

EdTheHeaterMan

Tim McElwain said:

In order to use any retrofit and be legal you must have a factory cross reference listed somewhere or get permission from the boiler manufacturer and get it in writing.

Agree. But a new boiler is expensive and this gas valve will work safely. I'm no longer in business and no longer have insurance. I just know what I know, but I know you have more experience with this.

Devil's Advocate. Does this document cover this situation? It's from the instruction sheet for the Y8610U.

FDNYRETIRED

https://youtube.com/watch?v=TRoFSNF4zh8

Think about it and that was from not fooling around with something your not sure of.