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I have a 1985 Peerless water boiler with water heater in my 3000SF two level house + 600SF heated area in basement.
Above ground the oil tank and feeding lines were replaced in October 2011. Boiler last tuneup was January 2012.
The boiler has a draft inducer.
This boiler has 2 labels on it. One of them shows model number JOTW-75-PWCT and another JOTW-100-W.
I think my boiler can work in two modes 75,000 BTU and 100,000 BTU.
Boiler Burner Specifications:
Boiler Model#_____ Burner Model#___ Burner Head__ Static Plate___Nozzle Size
JO/JOT-TW075____AFG-F3__________F3____________2 3/4"_____ .75 70° A
JO/JOT-TW100____AFG-F3__________F3____________2 3/4"_____1.00 70° B
The boiler worked very good with a - .75 70° A nozzle. On January 10th 2012 we had a problem. The boiler started to emit black smoke from it.
After the oil filter was replaced it worked for 2 days then just didn't start. My service company made tuneup. After two days again the burner did not start.
Then they replaced an eye and start relay, and replaced the nozzle from .75 70° A to .65 80° A, becuse on old service list has mark ".65 80 A only".
The service guy tried to adjust the burner but CO2 level can't go more than 7.5% because it started smokeing.
He said you have a very high draft even without draft inducer ExAir=103.0% and boiler needs to install automatical draft regulator for a couple hundred bucks.
So they downfired my boiler but parameters now is:
339.3 °F--- T stack
7.46 % --- CO2
83.5% --- EFF
103.0% --- ExAir
11.0% --- Oxygen
4 ppm --- CO
9 ppm --- CO Air fire
-0.1076 inH20 Draft
56.1°F --- Ambient temp
0 ppm CO Ambient
Smoke Test 0 0 0
Avg Smoke # 0
With downfired burner I don't have enough hot water for two bathrooms. The boiler is working right now. What is the problem with my burner? Do I need to install a draft regulator?