Buderus Gas Hot Water Boiler - PLEASE HELP

roc

I have a Buderus Gas Hot Water boiler model G124X SP/DP Model
1) I burn out my thermocupler every year. Should they burn out that often?
2) None of the part numbers are valid anymore. I contacted Buderus and received zero help. Where can I order parts and verify my part numbers?

Been extremely frustrated with this boiler over the years. Will probably buy American next time just for the parts availability.

Please Help!

lchmb

If your burning out the t-couple I would suspect you have the wrong pilot orifice in the pilot. Are you looking for the t-couple or pilot assembly?

DZoro

Does your pilot flame surround the t-coupl about 3/4" all the time? During both on and off cycle ? It's not totally unusual to fail that often, should last longer, but during a yearly maintenance, a new t-coupl change out would be done anyhow.

Ironman

The thermocouple, gas valve, ignition control, pilot assembly are all Honeywell parts. The same as used by American boiler manufacturers.

Are you on LP or natural gas? The content of some gas suppliers can be corrosive.

4Johnpipe

Where is the boiler installed? Has this been occurring since original install? Did something change? Chemicals from the area can cause premature fouling and failure of thermocouples...

SuperTech

If I were you I would without hesitation get rid of the standing pilot. Buy a Honeywell Y8610U intermittent pilot retrofit kit. Your thermocouple issues will be completely eliminated and you will decrease fuel consumption.

roc

lchmb, I am looking for the proper Thermocoupler, Q309 as indicated in their parts diagram. Thank you!

lchmb

You can use a universal t-couple to replace it.. Take it to your local supply house and let them give you a replacement.. I would recommend having someone check your gas pressures and service the unit at some point. If your burning them out yearly something is a bit off.. https://products.ecc.emea.honeywell.com/europe/ecatdata/pg_gr-q309.html

roc

Ironman, Thank you! I am on natural Gas.

roc

4Johnpipe, Thank you! It's been happening more after the first original thermocoupler was replaced many years ago. The boiler is installed in a room off my garage with is heated.

lchmb

try the husky brand..a bit tougher.. make sure you have combustion air in the room as well...

roc

SuperTech,
I think I will go with this option as I like the idea of getting rid of the thermocoupler all together. I noticed there are Honeywell Y8610U intermittent pilot retrofit kit with additional different numbers. How do I know which to purchase for my boiler? TIA

the_donut

Maybe it is getting hot from partially obstructed flue.

SuperTech

The Y8610U4001 has a maximum capacity of 150,000 BTU/hr and the Y8610U6006 has a maximum capacity of 270,000 BTU/hr. You should be able to find the capacity information on the data plate inside the boiler.

Usually I find thermocouple failure due to the thermocouple being "cooked" from the pilot flame being too large.

It's always nice to be able to gain efficiency and solve a problem at the same time.

roc

SuperTech , THANK YOU SOOO MUCH!!!! Roc