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Re: Beckett AFG Efficiency Testing + Boiler sooting issue
Update: the tech from Joyce Cooling & Heating came out this morning. Completely stumped. We talked through everything that's happened, he witnessed the pulsation, made some adjustments to the air to get the combustion numbers a bit better. He was able to get the following numbers at 20° on the air shutter:
He also pulled a 2000 Ohm reading on the cad cell, which he said was pretty high, but he didn't believe it warranted replacement.
Nice guy, didn't charge me, said he would raise the case at his service meeting tomorrow morning to see if anyone else has ideas.
-
- 379.5 F = Temp Stack
- 4.3% = Oxygen
- 7 ppm = CO
- 12.47% = CO2
- 84.7% = Efficiency gross
- 25.9% = Excess Air
- -0.029 in-H20 Draft
He also pulled a 2000 Ohm reading on the cad cell, which he said was pretty high, but he didn't believe it warranted replacement.
Nice guy, didn't charge me, said he would raise the case at his service meeting tomorrow morning to see if anyone else has ideas.
Caleffi Idronics milestone
250,000 copies of Idronics have gone out to the industry!
Free downloads or virtual books here.
Download all the issues and put them on your computer or a cloud for quick easy access when you are on a jobsite, or?
Thanks for the support and suggestions to keep the journals relevant to the what we do.
https://idronics.caleffi.com/
Free downloads or virtual books here.
Download all the issues and put them on your computer or a cloud for quick easy access when you are on a jobsite, or?
Thanks for the support and suggestions to keep the journals relevant to the what we do.
https://idronics.caleffi.com/
hot_rod
8
Re: oil furnace sooting extensively
That is another way to do it. Regular pump with a valve kit.
I just like the Clean Cut Pump. It is easy.
I just like the Clean Cut Pump. It is easy.
Re: Peerless NV 22 Garage Heater - help
I am not sure what is on the other end of that capillary tube but it may be an electrical switch that is activated by the temperature sensed by that probe (copper tube). My educated guess would be that the probe you are holding in your hand has fallen off of a bracket that holds it close to the heat exchanger so it senses the heat. Look for a bracket that might place that probe in a position as illustrated in this picture.
Thank you.
Sitting at home, when it is minus 34 C (Damn cold F) my bare feet on the tile floor, am feeling very grateful to the people here.
Eight or nine years ago, started hanging out here, learning & studying space heating. The knowledge gained and assistance/advice is directly responsible for giving us a very comfortable home. Learned how to do a load calc, learned about insulation and hydronics, and some interesting work processes along the way.
Thank you so much.
Tony Aldridge.
Eight or nine years ago, started hanging out here, learning & studying space heating. The knowledge gained and assistance/advice is directly responsible for giving us a very comfortable home. Learned how to do a load calc, learned about insulation and hydronics, and some interesting work processes along the way.
Thank you so much.
Tony Aldridge.
nibs
9
Re: Replacing old style expansion tank.
Based on my personal experience,
and knowing that your cast iron rads will hold a lot more water than a baseboard system, if the chart calls for a #60 tank, I would go with a #60. I have had a couple of cases where the chart said 30, but it was border line 30 or 60, and we had to go back and put in the 60 to keep from popping the relief. Plus the #60 will give you a little extra room for error as the air side slowly looses pressure from year to year.
and knowing that your cast iron rads will hold a lot more water than a baseboard system, if the chart calls for a #60 tank, I would go with a #60. I have had a couple of cases where the chart said 30, but it was border line 30 or 60, and we had to go back and put in the 60 to keep from popping the relief. Plus the #60 will give you a little extra room for error as the air side slowly looses pressure from year to year.
Re: Inquiry sent to Xylem today - Update with new circ (Grundfoss Alpha)
At 120F the valve starts modulates and you can see bypass flow start dropping, system flow starts moving. At 140F bypass is 100% closed, all system flow.
I did some adjusting and got almost 13 gpm, so over 6 fps
I have a short loop, so this happens quickly. Pump noise, boiler ramping up noise, but nothing I can hear in the valve?
I'll still try a delta P circ to see how flow responds as the valve modulates. But as one port closes the opposite opens that amount, so there is no increase in delta P I suspect.
I did some adjusting and got almost 13 gpm, so over 6 fps
I have a short loop, so this happens quickly. Pump noise, boiler ramping up noise, but nothing I can hear in the valve?
I'll still try a delta P circ to see how flow responds as the valve modulates. But as one port closes the opposite opens that amount, so there is no increase in delta P I suspect.
hot_rod
1
Re: Two quotes for combi boilers for radiant and DHW
We did a job in a small space like yours in Novato. The V. boiler had sooted up and was spewing carbon monoxide and we installed a Lochinvar heating only boiler in its place. Above it was a shelf with an on-demand heater for the DHW. Broke all the rules.
Eating & Cooling: Informal Breakfast Meetup AHR Expo 7:30 Tues Jan 23@Spoke & Bird 205 E18th
We try to find a decent place decently close to the conference. Last year at Rosie's in Atlanta @EdTheHeaterMan held court with a half dozen other wallie's. This year at the Spoke and Bird, 1/2 mile from the Hyatt Mccormick Place, you're the star. And you want to be around the show Tuesday Morning anyway when Coffee with Caleffi features some Heating Helpers at 11.
The Spoke and Bird
205 E18th Street
Chicago, IL
RSVP on this thread so I can try to block out enough seats.
directions or getting together at the show anytime text 401-439-7877
Brian
The Spoke and Bird
205 E18th Street
Chicago, IL
RSVP on this thread so I can try to block out enough seats.
directions or getting together at the show anytime text 401-439-7877
Brian
Re: pressuretrol problem
Thank you all for your feed back, but the solution was replacing the pressuretrol again for New i fought with the manufactor they gave a case number and went and installed new. so finally the 3rd one worked which is what i thought nothing wrong just poorly made control, had me second guessing something i was doing wrong but nope heat running and working just fine. i skimmed another time just because i had time and so far working like a charm. again thank you gentleman and fellow hvac/ plumbers for your help.
John732
1