Fahrenheit Technologies Endurance 50F Information

Do you guys monitor air return and outlet temps with different pellets? How long do you wait to record the temperature delta at each setting for it to stabilize? I’m a numbers guy lol, I did this with my PI40 and plan to with the 50F as well.

NC454


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I monitor the outlet just above the furnace at eye level and it takes a while for the furnace to achieve the max temp. I like to know where the sweet spot of air damper opening for all pellets. It gives me a reference to fall on when switching pellets in the future. I'm on T-stat mode and usually I wait for a cold day so it has time to remain in the ON position for a longer run to let the furnace warm up to the higher running temps. I have a HRV in the system which affects the air return temps so I account that in the readings, I have it running on a timer (20 min on and 40 min off). It robs a lot of heat and increases the heat load. I do run the furnace in manual at the max of my required heat setting for a more stable run to achieve my sweet spot #'s. Hope that answers your ? ex; T-stat runs from #1 to #4 in my situation and it takes awhile to achieve the higher temp so in your case it might vary! How many air registers opened, sq footage, etc...., affects outlet temps!! I also noticed certain pellets(LG's) just doesn't perform in this furnace??

 

On my PI40, it was all manual control so what i did was take the temperature delta between the inlet air and outlet air after 20 minutes of running at each setting, and since i knew the fan CFM I could calculate the realized output BTU at each setting, of course this does not count any heat from conduction or radiation, or the heat lost through the burn chamber exhaust. There was no fresh air adjustment at each setting. It ended up being a good way to quickly compare pellets at a high level. Note, that I used “as received BTU value" which you can request from your distributor for your batch as opposed to the commonly advertised “moisture-free BTU value,” which is substantially higher than the “as received BTU value.” It looked something like this:

 

You went out of your way to put up those numbers
A little more simple on my part, a lot more
Like they say, whatever works for you!

 

I use the numbers from each different pellet type to evaluate BTU vs cost delta between them and to compare to current propane prices.

 

How long does your unit stay in “stabilizing” prior to running?


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Also, I am seeing about a 58F difference between inlet and outlet temperature on level 5. Does this sound right?


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I don't do the number thing like you do
From your calculation chart, it doesn't sound right
Time to allow the unit to fully warm up is key, outside temps, batch to batch, air to fuel ratio, clean unit versus semi-dirty versus dirty, a lot of variations to consider
Some times when it's warm outside, I would put it manual at the desired setting to run longer to get my readings 'cause I'm hooked up to a T-stat.
Do you have the LED CB with igniter?

 

The chart was from my pi40, I just started testing with the 50f and yes I believe I do.


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I noticed that my stabilizing time was shorter when I changed pellets.hardwood to softwood. I haven't had a good test with the softwood(White Pine) yet cause it hasn't been very cold ,so Im not get a long burn on level five. I am kind of excited to see the ash level when I go to clean it this Saturday. With the Hardwood(Pro Pellet) I had alot of ash. Side note,My brother bought a new Harmon,He has went though 2 tons of white pine pellets and only had a gallon and a half bucket worth of ash.So his stove is insanely efficient,or those pellets literally burn into damm near nothing.

 

A Little update. Just cleaned the furnace after a week run(Sat-Sat) on White Pine Pellet from Marth. Wow !!!The difference so far,The stove was very clean,1/2 to 2/3rd less ash than Pro Pellets. No Crud build up on the burn pot components.No black smoke outside,or burning plastic smell. This coming week should be a good test for heat output,suppose to be down into the teens and single digits.

 

Hey Fahrenheit guys...

for the last few months I have off and on got a auger time out error and after screwing with this and that it goes away and works like it should for a while. Well after the issues with the stove last week and again tonight after again thinking it is fixed any ideas of what to look for?

the high temp setting is not beyond 200deg like suggested

the lid switched is bypassed because I have a hopper extension

auger spins and drops pellets when priming.

I’m thinking maybe the auger motor is going bad?

tomorrow is a call to Fahrenheit depending on some answers here

 

I had this issue. The fan limit switch was the culprit in my case.I bypassed my limit switch and presto,worked perfectly.Even tough it was'nt going past 200. I went and got one at a heating and cooling place locally.

 

That is what I was planning on doing. A lot of my plumbing wholesalers are also HVAC stores so I was going to pick up one locally quicker and I am sure cheaper, it is just a honeywell item anyway.

Thank you Irish.

Chris

 

Whatever you do, don't try to mess with the spring action on it! When you have to readjust the temp settings, hold on to the round wheel where the settings are

 

Well,

I went out of town for the weekend and did not want to bypass the fan controller so I just left the blower in the on position and the furnace was fine while I was gone, (short of running out of pellets but not an auger timeout so I will take it)

Before I left for work my new exhaust blower motor arrived from don2222 and I picked up a new fan controller from a local HVAC supplier. Tonight is a deep clean and installing my new parts and hopefully back in business.

 

After changing out the exaust motor and the fan controller I hope we are back to normal. I am amazed at how much quieter the new exhaust motor is now as well. Before I could actually hear the motor in idle upstairs, now I can actually hear the pellets falling into the burn pot, I forgot what it was supposed to sound like.

Immediately I have noticed the blower motor is running shorter cycles and with shorter intervals in between. I have to assume that my issue before was that it wasn't cycling as it should and was just heating up too much and shutting down. We will give it a few days before I am confident it is fixed.

 

That sounds like good news! I havent swapped my combustion motor yet..lazy i guess,but its working .

 

Was it the Gleason/Avery motor or another Fasco?

 

Gleason/Avery. I believe the last one was as well just 4 years old and has been making some noise for the last 2 seasons, really bad this year