Atwood 8531 Furnace, New vs. Old
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- Опубліковано 9 вер 2017
- These Atwood Furnaces are a good design, much better than the Suburban style furnace. I find the air exchange, intake, exhaust, and mounting systems much better on the Atwood than the Suburban; just seems to me to be a much more solid design. That being said, there are some differences between the old and new Atwood furnaces. The old ones had a much better metal squirrel fan, as opposed to the new plastic ones. The metal fans were better balanced, and did not wobble as much at high speeds. Newer motors tend to develop little "squeeks" and "ticks" due to the plastic fan mount becoming slightly bent, which cause the fan to rub against the housing. Also, I find the control board were more securely mounted, as they had their own dedicated little plastic cover, as opposed to being just left out in the open to collect dust.
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#Atwood #Furnace #Motorhome #RV - Наука та технологія
Atwood discontinued the metal fan, however due to customer complaints, they now offer the metal fans again👍
Good to know David, yeah I have heard a whole slew of bad things about the plastic fans, good to know that they offer the metal ones again.
My 89 8531-II exhaust tube will not budge, i removed the wing nut and washer, but i cannot get it to pull out, I took a flashlight, looked inside and it looks like there is a metal piece sticking ip through the tube on the bottom! Is that part of the back wall of the heat exchanger compartment or is it from the outer tube connecting to the inner tube? I have to remove it in order to pull the inducer draft blower wheel off the motor shaft cause the motor went!
I'll have a look today at what your talking about, I have a spare furnace in my basement.
Hey man to replace the limit switch on the newer 8531-111 do you have to remove the whole furnace from the rv to get to it ?
atwood is now dometic, you can get parts for the 8500 series but they don't make that furnace any more
VANESSA Lange Thank you Vanessa for that information.
problem: i got the atwood 8535-1 furnace. got the dinosaur Fan 50
control board but the plug wires don't match up. fits fine but one wire
has no contact when plugged into dinosaur. original has pwr, v1, s1,
& gnd. the s1 doesnt go anywhere on dinosaur board. everything else
matches. thats the flame sensor. i can move the pin but only thing left
is "NC"? my furnace thermostat grounds the circuit & also i have
time delay relay so i dont think i use the t-stat pin on the dinosaur
board. also i thought if i used the dinosaur board i would NOT need to
have the time-delay relay anymore. thats what i read online. cant find
any info & Dinosaur ele has NO phone #.
Hi Dj Darren. The connector for your old furnace should plug right into your new Dinosaur board and function properly without moving any pins around. The dinosuar board is a universal board, so some of the names of the connections have been "universalized" I guess you can say, but they do the same thing. "PWR" goes to "Ground", "V1" goes to "NC", "S1" goes to "T-Stat", and "GND" goes to "Air/Sail". I realise this is confusing, but if you look at the way your furnace is wired up, you'll realise that the sail switch - located behind your fan shroud - is grounded to the chassis of your old furncace, so they call this "GND" on your old board, but it is essentially hooked up to the sail switch. On the Dinosuar board they actually lebell this as "Air/Sail", so don't worry, its the same thing. The PWR and Ground thing is a bit confusing to but that is the way its hooked up. Your comment on the fan delay...there is a tiddlywink relay that heats itself up when your thermostat is turned on, this is an independant component that is separate from your ignitor board, that is a feature that you cannot choose to bypass with the board. The fan will turn on after a 10-15 seconds of turning your thermostat on, no matter what kind of board you have in there. Hope that helps
@@UOttawaScotty if i plug it in then my flame sensor (s1) isnt connected to anything & also on the board "NC" isnt connected to anything. i will call dinosaur on monday for them to explain this nightmare. thx tho!
@@djdarrenrv Okay, good luck with the board. Sorry I couldn't be more helpful, I'm sure if I had it in front of me I could figure it out, it's hard over the internet. Best of luck DJ Darren.
@@UOttawaScotty I have an Atwood 8524 IV fan on continuously. I read it is relay, but I am unable to find one near ignition board. I am working underneath cabinets so no access to outside. Heat works perfectly no proble with thermostat. Thank you for your help in advance.
Maybe better but my 83 suburban limit switch was just behind the cover, that one in the attwood you have to remove everything to get to it.
No thats true, but one other thing I forgot to add though about the Atwood furnace is that the mounting to the outside of the RV, and the method to which it exchanges air with the outside environment I find much better on the Atwood, either way, as long as your warm, that's all that counts !