First-Timer Needs Help With Thermostat

First-timer needs help with thermostat

PostBy: iou180 On: Mon Jan 18, 2016 1:35 pm

Hi all, I'm new to the anthracite scene and could use some help. I have recently installed a LL Hyfire II. Installation went pretty well and I fired it up in the house for the first time yesterday. Now on to the trouble...the thermostat temperature. The TS2 doesn't match my furnace t-stat so I adjusted the bias to see if that would solve my over shoot, but its making things harder to understand.

Whats happening is the hyfire is still making heat well after the set point temp is reached. For instance the set point was 71 and according to my furnace t-stat and the TS2 the temp is 74 and it still has a FR of 98. An hour or more later the FR drops into the high 80s while the temp is still 74. A little while later the FR is in the mid 50s, but the temp on the TS2 is reading 70, but my furnace t-stat says 74. I'm thinking this thing will never shut off. I readjusted the bias again to match in order to help. So I've had the thing running for less than 24 hours and it's burned through almost 3 40lb bags...mostly while the temp has been above the set point. Why is it taking 5-6 hours for the FR to drop after the set point has been reached?

I have the same trouble going the other way. As the house slowly cools (it is fairly tight and well insulated) the FR doesn't start going up until the temp is about 4 degrees below the set point. At this point its cold enough in the house for the propane furnace to kick on bringing the temp up to 69 and by this point the coal is starting to get going. The TS2 then runs constantly for 8 hours but with the temp above the set point for 5-6 of those hours starting the whole cycle over again. Why does it wait so long to increase the FR to maintain the set temp?

Any advice would be greatly appreciated.
Thanks,
Ian
iou180
 
Hot Air Coal Stoker Stove: LeisureLine Hyfire II
Coal Size/Type: rice anthracite
Other Heating: propane

Re: First-timer needs help with thermostat

PostBy: Rick 386 On: Mon Jan 18, 2016 2:31 pm

iou,

First welcome to the forum.

Now some facts about coal burning. Coal takes a long time to get up to temp, and a long time to cool back down. You have to realize that on an initial start up, it takes quite a while for the coal to get burning and get the mass of steel (the Hyfire) up to temp where it can radiate the heat off it. And once the Hyfire is up to temp, it takes quite a while for it to cool back down. That is your overshoot temps.

I don't believe changing the bias will do much to help you here. You may have to change the thermostat setting to a higher level than the other heating unit to get them to match.

Do you have your feed rates set properly ??

Rick
Rick 386
 
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work

Re: First-timer needs help with thermostat

PostBy: 2001Sierra On: Mon Jan 18, 2016 2:43 pm

Welcome to the forum. There are some hidden settings in the Coal-trol that handle how fast it ramps up or down. It is called HLF heat loss factor. Default is 0 but I believe you can take it up to 2, I run mine at 1, because I expose my stove to some heatloads that can be sudden. You may have overshoots with this setting but I don't mind that. I beleive the bias you are speaking of on your thermostat, is what used to be called the anticipator, which was for when the radiators would give off heat after the thermostat was satisfied, to prevent overshoots. This is not applicable for the Coal-trol.
2001Sierra
 
Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
Coal Size/Type: Rice
Other Heating: Buderus Oil Boiler 3115-34
Stove/Furnace Model: Keystoker 90 Chimney Vent

Re: First-timer needs help with thermostat

PostBy: iou180 On: Mon Jan 18, 2016 9:02 pm

Thanks for all the help so far guys. I talked to Matt at LeisureLine today and he has suggested a few things regarding the install that may help with my problem. I'm going to work on them and make the adjustments in the settings he suggested. I really hope I can get things sorted out and enjoy the warmth of coal.

Ian
iou180
 
Hot Air Coal Stoker Stove: LeisureLine Hyfire II
Coal Size/Type: rice anthracite
Other Heating: propane

Re: First-timer needs help with thermostat

PostBy: WNY On: Mon Jan 18, 2016 9:11 pm

Matt and Dave are very helpful. Also, the guys from CoalTrol are very helpful too. in this forum.

Bias adjusts room temp on the settings, mine was a couple degrees off from my gas furnace and digital thermostats.

It takes a bit to get it adjusted, just don't use the setback or large temp changes. if you house is 65 and you raise it to 70 or 72 on the CoalTrol, It will Definitely overshoot, once it get going. I usually leave mine on a certain temp and let it run. maybe 1 or 2 degree different if needed (if really cold, I might raise it a degree or 2 overnight). Make Small adjustments and let the stove catch up.

Yes, coal takes time to heat up and cool down. likely and hour or more. the feed rate slowly increases or decreasing based on the temp differential.

where is the heat source in location to the thermostat? is it far away? or near it? is it ducted into your existing ducts?

Did he suggest the HLF (heat loss factor in the setup?) 1, 2 or 3 I think? I usually run 1 or 2 depending. ALso, check the min. CFM setting?, so the blowers kick on sooner and maybe a bit more air flow to start the heat moving sooner.

I think the settings on your coaltrol to start should be around 6 min and 40 max. I think mine are 8 and 48. so, not too far off base settings.

That stove should crank out the heat. My HyFire I works pretty good now with a few mods, but wish I had a Hyfire II. :)
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon

Re: First-timer needs help with thermostat

PostBy: iou180 On: Tue Jan 19, 2016 3:24 pm

Thanks for the help. I made a few changes following Matt's suggestions and the past 12 hours have been an improvement. I have a couple more changes to do with the install that Matt says will also help efficiency. Things are looking up.
iou180
 
Hot Air Coal Stoker Stove: LeisureLine Hyfire II
Coal Size/Type: rice anthracite
Other Heating: propane