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Munchkin Boiler 80M

When the house was built in 1996 I had an Apollo Heating System. This system was not heating our home enough so we installed a Munchkin 80M unit that is about 15 years old. The past few years it has been making a groaning noise when starting up. It finally died this week. I was getting an error code F09. After some troubleshooting I decided to open it up. I have posted pictures of what I found. The back plate is damp. I wanted some advice on whether to replace parts or get something else. This unit heats my downstairs main floor only. This past summer I had to replace my upstairs AC unit and went with a Trane XL16 heat pump. Should I just replace the main floor AC unit (which is 23 years old) and get a heat pump. I still have a hot water tank in the garage for my water. 



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Comments
depending on the answer you wanted to hear, your welcome or I'm sorry.
just my 2 cents
As for the question on switching to forced air, is the Munchy heating your floors or do you have baseboards?
Albert Einstein
What climate?
Albert Einstein
Parts that are needed:
Back Refractory-(ceramic target wall)-7250P-160
Front Burner door refractory- 7250P-161
Burner Tube gasket-7250-070
Other Possible Part That May Be Needed:
Spark Electrode-7259P-958 (unless HA model)
Flame Rectification Probe-7250P-049
Burner Tube-7250P-248
If they can not be cleaned or show damage.
You might try to get parts from:
https://www.jupiterheating.com/
I would wonder whether you had concentric venting. How about a picture of an open boiler cabinet to see what the condition of the inside of the boiler cabinet is and the vents that exits the house.
There are other things that need to be done besides a through cleaning. Combustion Analysis with a recently calibrated meter. Changing the Post Purge on the blower from 25 sec. to 100 sec. Making sure that the Honeywell gas valve isn't touching the back of the black cabinet.
If the heat exchanger is leaky, with the boiler supply water shut off, one would expect a drop in water pressure over time. Sometimes the heat exchanger will squirt water out of a hole which is visible. A leaky HX would necessitate a new boiler.
How about a close up picture of the inside case, one not so far away. Maybe several pictures.
I service some units as old as yours and they are so clean, you could eat off them, almost.
Is that boiler in a laundry room?
That water going into that 5 gal bucket is condensate being produced in the combustion process, which is normal. Depending upon how cold it is outside, your boiler would produce up to 5 gal of water a week. That's why it's called a condensing boiler. It condenses water.
Consumer Reports.
Boilers
Buying Guide
Ratings
Results in the following chart are gathered from Consumer Reports’ 2018 Winter and 2019 Summer Surveys of 4,543 boilers, owned by members who purchased a new unit between 2003 and 2019.
Our predicted brand reliability ratings are based on a statistical model that estimates problem rates within the first 10 years of ownership, for boilers that are not covered by an extended warranty or service contract. We also adjust for the number of months per year that boilers are used. The median number in our survey was 7 months. Higher ratings are indicative of better reliability. Brands receiving a red or orange rating cannot be recommended by CR at this time.
Predicted Reliability
BURNHAM 9 / 10
NEW YORKER 9 / 10
SLANT/FIN 9 / 10
BRYANT 8 / 10
PEERLESS 8 / 10
BUDERUS 7 / 10
WEIL-MCLAIN 7 / 10
WILLIAMSON 7 / 10
LENNOX 6 / 10
VIESSMANN 6 / 10
CROWN 5 / 10
LOCKINVAR 5 / 10
DUNKIRK 4 / 10
ENERGY KINETICS 4 / 10
UTICA BOILERS 4 / 10
TRIANGLE TUBE 2 / 10
Sources: Consumer Reports' 2018 Winter and 2019 Summer Surveys
Owner Satisfaction
ENERGY KINETICS 10 / 10
BRYANT 9 / 10
BUDERUS 9 / 10
LOCKINVAR 9 / 10
VIESSMANN 9 / 10
WEIL-MCLAIN 9 / 10
WILLIAMSON 9 / 10
BURNHAM 8 / 10
NEW YORKER 8 / 10
PEERLESS 8 / 10
CROWN 7 / 10
DUNKIRK 7 / 10
TRIANGLE TUBE 7 / 10
UTICA BOILERS7 / 10
LENNOX 6 / 10
SLANT/FIN 6 / 10
Sources: Consumer Reports' 2018 Winter and 2019 Summer Surveys
For mod cons Lochinvar, HTP, Triangle, IBC, NTI, Viessmann, Triangle Tube, Burnham, SlantFin, to name some of the most common.
Lochinvar and HTP have been my main brands, great factory and local rep support in the areas I have worked.
There are something like 65 brands and models of mod cons available!
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me
I suspect that the boiler is connected to concentric venting from the rusting on probes. Why so much rust and corrosion? Why is the control module just laying there?
The Munchkin is supposed to have a 3/4" pipe gas supply line to the boiler. A corrugated flex line has to be fairly large to meet that requirement. Yours is too small.
Fix what is wrong, change the concentric vent if you have one, and clean it up. Then you may get many more years of service out of the boiler. You have to decide the best course of action.
NJ Master HVAC Lic.
Mahwah, NJ
Specializing in steam and hydronic heating