Cast Iron boiler repair
Hello, I have a very old cast iron boiler. Gas fired. We have a internal leak. It starts up and runs, but after a while, water is leaking onto the flame sensor, the pilot goes out. I have to go and...
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Navien CH240 - No Heat in radiators but has domestic hot water
I have a six year old Navien CH240 combi boiler. Worked fine for the last six winters. Only thing I had to change besides cleaning filters was expansion tank so far. However when turned up thermostat...
View ArticleOld wall heater gas valve replacement recommendation
Looking for a Montgomery Wards wall heater, SFB 50314 07X, replacement gas valve, Essex TF-5, recommendation
View ArticleSteam boiler won't start (Weil McLain PEG50)
Please help with identifying the root cause of my heating problem Weil McLain PEG50 (2017), Hunter thermostat. Just heat, no HVAC. I disconnected thermostat for about a month due to construction. Today...
View ArticleTaco Zone Valve box noise
I have a Taco ZVC403 zone valve control box. I have 3 zones each having their own thermostat. When a zone calls for heat there is a “LOUD” buzzing noise and I believe it is coming from the zone valve...
View ArticleWeil Mclain Ultra 80 NG - Series 2 non start
HI, My Weil Mclain Ultra 80 NG - Series 2 boiler developed an issue after about 1 month of this heating season. A hard lockout with an E16 error code was displayed. The troubleshooting guide suggested...
View Article2 Existing hydrotherm to 1 Superhot AAA840 (Venting) (Canadian Code)
Hey everybody, We have a couple of apartment buildings that we are going to be doing some retrofit work to. We're going to be installing 1 Superhot AAA-840 Boiler (1 - 14" Flue Collar) in lieu of 2...
View ArticleTempStar 90 plus furnace momentary shut down and restart in mid operation.
I have a Tempstar T9UHX100L201A 90 % furnace. I have noticed that mid operation the unit shuts down and quickly restarts. I have noticed it also happens during the cooling cycle and Heating cycle....
View ArticleSmoke test
Hello, Can you perform a smoke test on a boiler that is not running? 2 plumbers are telling me that my chimney needs to be relined and it failed the smoke test...yet boiler not running. Just wanted to...
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Carlin G3B Intermittent Flame Fix
If your Carlin G3B Burner Flames on and then Flames off, or has an Intermittent Flame On and Flame Off, you need to check the blower cage wheel that brings the Airflow or Oxygen into the unit, it can...
View ArticleCH- Anti-Cycling on HTP
Tryinng to cut down some of my cycling of my htp uft 80. I have adjusted my odr, to the best of my ability, i have it running almost constant, but still have some turn offs. There is an anti cycle...
View ArticleBad propane
How many of you guys have had issues firing a boiler on propane? I was in a veisemann class and the instructor asked how much trouble we’ve had with propane. The class full of seasoned heating guys had...
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Navien NCB 240 flame loss (error 12)
Hi all, A couple times a day, and especially every early morning, I get Error 012 (flame loss) at my Navien NCB 240. I have to reset the boiler to make it work again. I have called the installer...
View ArticleCorrect size & Brand Boiler
I need to replace my old gas boiler. I live in Massachusetts. I have gotten some quotes. The 3 brands suggested are Viessmann, Lochinvar and Weil-McClain. Only one company has done a heat loss...
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Trane XR90 condensate fitting?
Trane XR90 was installed with no condensate neutralizer. I am adding one, however the PVC drain tubing outside the furnace is installed tight to a grey fitting, which will probably have to be replaced...
View ArticleTankless Boiler Makeup Water
I understand it is correct to fill the system a the point of no pressure where the expansion tank is installed on the system...why is there an internal fill valve built into Navien's Combi Boiler if...
View Article30psi and flowing water sound in pipe
Hello there, I have this 140k Weil McClain boiler for 2nd floor only, abt 1000 sq ft. I cant sleep at night because its got problems. 1) Is the boiler oversize or the water too low in the boiler? I see...
View ArticleNavien tankless propane combination boiler water heater
a couple of times in the last week we’ve noticed the outside exhaust pipe cover/grate (the one I’m assuming keeps pests out) on the outside boiler exhaust has blown out and landed all the way in the...
View ArticleSafe to close valve for incoming water on Hydronic boiler?
Hello. I have a two zone, two TACO pump, hydronic gas boiler system with expansion tank. The boiler is probably over 25 years old but I can't afford to replace it this year. The red zone is 30 PSI for...
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Buderus GB142 ... multiple corrosion issues.
A noob here, thanks for all the terrific advice. Hoping to get your views on the following. Pics attached. I've got a new-to-me, approximately 10 year old, natural gas fired GB142 w/ indirect Buderus...
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