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16
Portage & Main / Re: Hows the burning season going for everyone?
« on: January 18, 2017, 03:56:50 PM »
Second winter with a CB 1450. Works great for heat, but my propane backup still comes on for hot water. I figured it was a temperature sensor issue, but I just traced all the pipes the installer had setup and realize now that they left it such that it does not serve the hot water. Looks simple to fix with another pump, a check valve, and some pipes. I've mocked up all the fixes in a Visio diagram. I'd love to have a diagram that could do some animations so I could run through all of the fluid flow scenarios.
17
Central Boiler / Re: New E1450 with WIFI module
« on: January 04, 2016, 05:01:10 PM »
I've since discovered that the "vent" mode where the primary air is off and only charge tube is running only comes on if the reaction chamber was above 550 at the end of a cycle. If it was lower than this when it hits the set point it doesn't run a vent cycle. So that still doesn't explain to me why it does it, but it makes me feel better about it wasting heat. It doesn't bother if there is much heat to begin with. I got the propane option because it was new construction and I was already running so many underground conduit, propane, etc. If it was an existing home the options would have felt much more expensive.
18
Central Boiler / Re: New E1450 with WIFI module
« on: January 03, 2016, 07:28:49 PM »
I haven't yet tried to let coals re-light the fire. I just put the wood in and press the auto-light button. I'm spoiled by the propane ignition. It gets it hot very fast so there is little smoke. It's hooked to a 1000 gallon tank.
19
Central Boiler / Re: New E1450 with WIFI module
« on: January 03, 2016, 04:35:25 PM »
I have the propane starter on the E1450 as well as a separate propane furnace that came with the house. The propane furnace keeps the water around 130 depending on the outside temperature. So 150 without heat increase could be the magic cutoff where the central boiler realizes that the fire is out.
20
Central Boiler / Re: New E1450 with WIFI module
« on: January 03, 2016, 07:43:31 AM »
On a related note. Do you know how a Central Boiler determines "Fire Out"? From the stats I can't tell. I have a backup condensing propane burner for the house on the same line, so the water temperature cannot plummet all the way back down, yet the Central Boiler still knows when the fire is out.
21
Central Boiler / Re: New E1450 with WIFI module
« on: January 02, 2016, 07:54:51 PM »
My E1450 is running 175-185, but when it hits the set point it has quite a bit of heat still working its way into the water, so it tends to get to about 190 before changing direction.
Today it is nicely running "high" with all three solenoids open when demanding heat. I think high on this furnance is 750F. It got up to 1000F. There is a note down at the bottom of the page that says: "Due to the temperature limitations of the sensor, it is not positioned in the hottest area of the reaction chamber. The actual secondary combustion temperature may be over 1000° hotter than displayed."
I suspect the venting is just to reduce the uncertainty of the high variability of the reaction chamber upon reaching the set point. For example if it just clamped everything shut at 1000F I bet the water would pass 200F when reaching equilibrium. It would probably benefit creosote reduction if it did not need to do this because it would stay toasty hot for a lot longer.
Today it is nicely running "high" with all three solenoids open when demanding heat. I think high on this furnance is 750F. It got up to 1000F. There is a note down at the bottom of the page that says: "Due to the temperature limitations of the sensor, it is not positioned in the hottest area of the reaction chamber. The actual secondary combustion temperature may be over 1000° hotter than displayed."
I suspect the venting is just to reduce the uncertainty of the high variability of the reaction chamber upon reaching the set point. For example if it just clamped everything shut at 1000F I bet the water would pass 200F when reaching equilibrium. It would probably benefit creosote reduction if it did not need to do this because it would stay toasty hot for a lot longer.
22
Central Boiler / New E1450 with WIFI module
« on: January 02, 2016, 09:10:38 AM »
I got an E1450 thanks to this forum. The resources on here, especially pictures, helped me a lot. One picture I couldn't find is one with more information about the WIFI/network capabilities and the myfirestar website. I got this up and running and have attached a screen shot.
It is fun to see the various stages (solenoids) going off. Any idea why the furnance vents after reaching its set point? It runs the fan through the charger tube but shuts off primary air. It seems to be to drop the temperature of the reaction chamber quickly. It seems like a waste of heat that it could instead have just let get absorbed. Perhaps it can't let it stay so hot without air flow.
It is fun to see the various stages (solenoids) going off. Any idea why the furnance vents after reaching its set point? It runs the fan through the charger tube but shuts off primary air. It seems to be to drop the temperature of the reaction chamber quickly. It seems like a waste of heat that it could instead have just let get absorbed. Perhaps it can't let it stay so hot without air flow.
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