KaptJaq wrote:vmi1983 wrote:
I have 5" diameter standard hardware store stove pipe about 8' long from the flue connected from the Godin to 5-6" connector and then to 6" chimney double walled.
IF I SWITCH TO 6" STOVE PIPE, WILL THE LARGER DIAMETER PIPE LEADING FROM THE STOVE AND CONNECTING TO THE CHIMNEY, COULD THIS SLOW THE DRAFT SOMEWHAT? THE 5" HAS AN AREA OF 25 INCHES, THE 6" IS 36 ... THE HEAT WOULD TRAVEL UP A PIPE 44% LARGER IN DIAMETER WHICH WOULD LEAD ME TO BELIEVE
THERE WOULD BE LESS VELOCITY, RIGHT?
Yes, a larger diameter pipe will slow the draft. Problem is on warmer days you draft will be slower due to the warmer temperatures. On those days you might need the draft generated by the 5" pipe to get a good burn going.
I use the MPD to control my draft. Before I open the ash door I throw a load of coal on top of the fire. The extra heat caused by the open access door helps light the new coal. The new coal absorbs a lot of the extra heat getting warmed up and started. The weight of the new coal also helps push the ash down towards the grate.
How many extremely cold days do you have? Will it be worth the problems on the warmer days that a 6" pipe might cause?
I would work with what you have first, use the damper and cold coal to control the heat. If it really doesn't work you could try a baro damper. I would only change the pipe size if I ALWAYS had too much draft.
Every install is different, you have to figure out what is best for your situation.
We have quite a few weeks of frigid weather, but the warmer days far out weigh the colder. I've loaded fresh coal and did a clean out, but the MPD was open the stove pipe
went to 600 to 500f and the fire was roaring! I've seen the high temp silicone seal melt away. I've been cleaning the stove quickly and dumping a fresh load on top of the fire which cools the fire, and I always have to keep the MPD closed. I keep observing, and make notes as the weather warms. This week forecast is highs in the upper 30's
with lows in the 20s and teens....right now the outside temp is 38F and the house is toasty...
Thanks for your help Kaptjaq!