Enviro M55 Combustion Blower Gasket?

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whlago

whlago

Feeling the Heat
Nov 30, 2011
294
NW Connecticut
Hello all,
Need to get back to think about winter heating and cleaning my blowers. I have heard many times here that when you clean your combustion (exhaust blower) you should make sure you have a gasket on hand because you probably won't be able to re-use once you remove the blower. Here is what I see when I explore the combustion blower:
  • You could remove the entire blower assembly and, if you do, there would be a small rectangular gasket that would come off as well, however;
  • I don't believe you need to do this, because you can remove only the motor and fans from the housing by removing 4 screws and taking that circular plate from the housing.
  • When I remove the round plate there is NO gasket between the plate and the housing.
  • However, if you research enviro m55 combustion blower gasket, it appears there is a round gasket that you can buy for the combusiton blower.
So the questions are:
  • To clean the combustion blower do you, in fact, only need to remove the round plate with the motor and fans?
  • If so, should there be a gasket there? There obviously wasn't one installed at the factory.
Thanks in advance for your help, it is an Enviro M55 Cast Free Standing by the way.
 
I'm sure some of the M55 owners will chime in eventually, but AFAIK, there should be a gasket between the flat plate and the plenum it attaches to to seal exhaust gases in. Most people just remove that plate to clean & service the motor and fan blades, and most of the time it requires a new gasket.

Does the owners manual show a gasket in the parts list?
 
Thanks for your reply Imacman, the parts list only shows the entire assembly as one unit. I am sure the motor and blade assembly detaches from the plenum, however because I took it off. There was definitely no gasket there and the stove is new as of last november.

As a follow-up when I looked closer at the gasket I found on line (available through Mountain View Hearth Products), it doesn't list the M55 as one of the models it is used on. In addition, the part number (50-2380) isn't on the Tech manual parts list. I'm thinking more and more that I don't need to replace a gasket to clean this blower but, as you say, I will wait until an M55 owner confirms.
 
Not 100% sure I am following exactly what you are saying...But the attached video might help!
My insert had the same gasket shown in the vid...Which I did tear when I removed the blower.


 
Thx...can't see the video at work but will check it out tonight. My first thought is the gasket is for the insert, and the free standing is a different set up.
 
whlago said:
Thx...can't see the video at work but will check it out tonight. My first thought is the gasket is for the insert, and the free standing is a different set up.
Click to expand...

The combustion blowers are very similar in many stoves.

Here are some pics of my Avalon Astoria FS cleanings

Wood Pellet Stove Yearly Cleaning - Convection Blower
https://www.hearth.com/econtent/index.php/forums/viewthread/60351/

Wood Pellet Stove Yearly Cleaning - Exhaust Blower
https://www.hearth.com/econtent/index.php/forums/viewthread/60251/
 
Wh, I know exactly what you are talking about, and there is no gasket on that plate that connect the motor to the exhaust housing.

I had the same hesitation when putting it back together, I even called Enviro and they said it is fine. Larger screws and a gasket would make me feel better too.
 
Thanks Vinny,
Good to hear...I'm not going to worry about it. Seems like it goes on exactly as it came off. Thanks all for the responses.
Joe
 
I always thought if it became an issue, I could put a bead of high temp silicone when putting it back together. It should hold and breaks easily when you have to remove again. Just a thought.
 
Hi all the combustion motor does not have a gasket on the M55 most stoves have gaskets with 6 holes in them, or screw studs with nuts holding the motor in place. The M55 has just the 4 small phillip head screws- if you add a gasket with longer screws be careful that screws don't go in too far and lock motor from turning- one of our service guys did this (not I) and got a flashing 2 (vacuum not established motor wasnt running). It seems to work fine with no gasket- we'll see as the M55 gets seasons on, .... anyway good luck.

Stovelark
Enviro 1700 FS Kodiak wood
Enviro EF3 FS pellet
Enviro Empress A/C FPI guess I like Enviro ....
 
Do you need to clean the blower each year? I had a company clean my stove and flue, I'm not sure they went in and cleaned the blower...
 
Thanks Imacman...I will probably just buy the gasket this year, but I will certainly be ordering the material you suggest and making my own in the future.
 
I know this is an old thread, so sorry to bring it back to life, but I also have the M55 insert. From what I can tell of the gasket, it is between the exhaust housing and the stove, not between the motor and the exhaust hosing. So if I remove just the motor from housing, I would not need a gasket. Can anyone confirm? Thanks.
 
If your exhaust motor looks like mine below, then you just undo the 4 tiny screws and remove the electric motor. There is no gasket there. Though this year I put a thin layer of RTV around that plate with the 4 tiny screws (not shown in picture).

Good luck.

stove-2-jpg.45595
 
The M55 insert was very similar to this, just turned a bit. That bottom screw was tricky, but yup, no gasket. Thanks for the picture!
 
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