Poor venting- and then added two Big Mouths

GW · November 18

Did a boiler job/ venting was dismal- 1/8” nips and 90s leading to tiny vents, on the various drops into the wet return.

We found a spot where an on rad had been pulled and capped. We slapped on a couple big mouths. It’s maybe 30 feet from the boiler.

With Old tiny vent that may or may not be working:

8:35 to get the steam from boiler to the “capped takeoff” (the main- one can certainly feel the steam coming through)

with the two big mouths:

7:29.

I guess a minute plus savings is good, I thought it would have been faster

Steamhead · November 18

Sure the Big Mouths are working?

STEAM DOCTOR · November 19

Has the boiler been properly cleaned? Wet steam will slog along, considerably slower than dry steam.

GW · November 19

@Steamhead im not sure- I settled for the one minute faster and called it a day. If you can tell me how to quantify the venting please let me know

GW · November 19

@STEAM DOCTOR its a new boiler, I’ll go back and skim early next week. So the two results were like for like as fast as the boiler goes

STEAM DOCTOR · November 19

Would not be surprised, if venting time increases after skimming.

Jamie Hall · November 19

8 minu tes measured from when? When the burner starts, or when the header sees steam? If it's from when the header sees steam. that's slow (I'd have expected 2 to 3 minutes). From the burner start?

GW · November 19

Jamie, when the header is steamed. I’ll skim it and report back

dabrakeman · November 19

Cold or warm pipes?

Poor venting- and then added two Big Mouths

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