In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

Napoleon NPS45 exhaust blower motor and impeller

Discussion in 'Pellet Stoves, Pellet Fireplaces, Pellet Furnaces' started by Geek, Oct 16, 2015.

Page 1 of 6
  1. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Does anyone know if the newer exhaust blower motor sold by Gleason Avery (3-21-xxxx) (for Harman stoves) fits exactly to the Napoleon NPS45.
     
    Geek, Oct 16, 2015
    #1 Top
    slvrblkk likes this.
  2. slvrblkk

    slvrblkk

    Joined:
    Oct 6, 2013
    Messages:
    6,644
    Likes Received:
    29,527
    Location:
    Northampton, PA
    Geek...I would think it does as long as the shaft diameter is the same...which most of those are the standard 5/16" I believe? What size is yours?
     
    slvrblkk, Oct 16, 2015
    #2 Top
  3. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Geek, Oct 16, 2015
    #3 Top
  4. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Can you see pic from the link?
    I think it says No. 702443316 or 70241226 ?
     
    Geek, Oct 16, 2015
    #4 Top
  5. slvrblkk

    slvrblkk

    Joined:
    Oct 6, 2013
    Messages:
    6,644
    Likes Received:
    29,527
    Location:
    Northampton, PA
    The picture doesn't come up for me but I'm on my phone. jtakeman is good at cross referencing these things but I think it's a pretty standard motor.
     
    slvrblkk, Oct 16, 2015
    #5 Top
  6. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    How about now.....
     

    Attached Files:

    Geek, Oct 16, 2015
    #6 Top
    imacman and slvrblkk like this.
  7. jtakeman

    jtakeman Moderator

    Joined:
    Oct 4, 2013
    Messages:
    12,092
    Likes Received:
    54,509
    Location:
    NW CT foothills
    Motor will fit fine................

    But seeing the only major diff is a higher amp draw. I don't think it will do much difference than the stock one. Usually higher amp motors turn larger impellers. A larger impeller will give you more CFM flow.

    Before I'd waste money ordering a supped up super dupper kit. Id run the stove on medium heat with the combustion motor plugged into house current with a lamp cord....... Only if your comfy doing so and be very very careful................................

    You control board idles down the motor to 2/3 to 3/4 full rpm in medium heat range. Going to a full wide open rpm will act similar to a high amp motor and over sized impeller set up. See if the stove runs cleaner and then spend the money on the super duper kit. If the stove still runs like crud??? It will still run like crud with the kit. Also note that a higher cfm will help keep the stove clean, But it will also suck more air through the stove------- AKA suck heat out the vent..... So don't be surprised if it makes less heat with a super duper kit installed!!
     
    jtakeman, Oct 16, 2015
    #7 Top
    imacman, will711, Geek and 1 other person like this.
  8. slvrblkk

    slvrblkk

    Joined:
    Oct 6, 2013
    Messages:
    6,644
    Likes Received:
    29,527
    Location:
    Northampton, PA
    Even for the $15 or whatever Don charges for the larger impeller would be cheap enough to try too. But like Jay said you'll be putting some heat up through the vent but it might not make a difference with your stove. Trial and error.
     
    slvrblkk, Oct 16, 2015
    #8 Top
  9. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Thanks guys.
    Couple things....I wouldn't mind buying the 11-blade impeller but I thought the bigger amp motor would be needed?
    This unit ran relative fine at least for the first season, I remember cleaning the burn pot like every 3 days? compared to now which is every 10 hours..!! I have good cleaning habits with the unit.

    There's a little squealing noise coming from that motor at least on startup, I wonder if manually turning the blades and if they stop quickly is a sign of a motor problem?
     
    Geek, Oct 16, 2015
    #9 Top
    slvrblkk and imacman like this.
  10. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Also, Gleason Avery quoted the motor for $75 plus $25 shipping and the lady said it is the motor ordered by Harman (3-21-xxx) , but it has 10 blades (according to her...).

    I am wondering if this is like Jay said a one-to-one-fit, take old out and put new in.....same 6" diameter??
     
    Geek, Oct 16, 2015
    #10 Top
  11. jtakeman

    jtakeman Moderator

    Joined:
    Oct 4, 2013
    Messages:
    12,092
    Likes Received:
    54,509
    Location:
    NW CT foothills
    I haven't done one so I am not 100% sure its a one to one swap!! The Harman should fit, But the outer holes may not be in the same location. So you might need to use your old plate to transfer the holes to the new plate.
     
    jtakeman, Oct 16, 2015
    #11 Top
    imacman and Geek like this.
  12. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    Here's some interesting, and maybe stupid from my part.....
    Decided to call Napoleon (again), talked to a nice person on the phone, went through everything....until the feed/fan trim came to discussion.

    I told him that yes, I trimmed the feed all the way down to 1 and the fan all the way up to 5.
    However, the info in the manual seemed a bit confusing, I had trimmed the feed to #1 light, this means the length of time between the auger feed cycle.

    From manual:
    "This will slightly increase the amount of fuel being fed into the burn pot. When trimming the feed rate, the LED’s will display the factory setting (#3 light) with the ability to increase up two levels (#4 and #5 light) or decrease (#2 and #1 light) the length of time between the auger feed cycle".

    So.....the higher the number the higher the length of time for the auger to feed pellets.
    Isn't this a bit confusing, at least it was for me when I did this way back....:zip::zip: I feel like an idiot...:hair:

    I will trim the feed to #5 and see how it performs by tomorrow...
     
    Geek, Oct 16, 2015
    #12 Top
    slvrblkk, jtakeman and imacman like this.
  13. jtakeman

    jtakeman Moderator

    Joined:
    Oct 4, 2013
    Messages:
    12,092
    Likes Received:
    54,509
    Location:
    NW CT foothills
    That does sound confusing. One would think/assume 5 is more feed rate and 1 is less feed rate!! Which is how it is with my Omega.

    If I put my Omega on feed trim 1 it decreases fed rate(increases the time between auger cycles). Feed trim 5 increases feed rate(decreases the amount of time between auger cycles)........
     
    jtakeman, Oct 16, 2015
    #13 Top
    slvrblkk, Geek and imacman like this.
  14. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    And here's the fan trim, the rep told me that #5 is the high fan trim (more air):

    "FAN TRIM Similar to the feed rate, it may be necessary to trim the speed of the combustion blower. Due to specifi c installations, it may be necessary to increase or decrease the amount of air moving through the burn pot to achieve maximum effi ciency. When in normal operation depress and hold the auger feed button. Similar to the feed trim the LED’s indicate what setting the trim feature is set to (#3 light is the factory setting). To adjust the fl ow, push the fan up or down buttons while depressing the auger feed button."
     
    Geek, Oct 16, 2015
    #14 Top
    slvrblkk likes this.
  15. slvrblkk

    slvrblkk

    Joined:
    Oct 6, 2013
    Messages:
    6,644
    Likes Received:
    29,527
    Location:
    Northampton, PA
    Hopefully you found your issue but you may want to consider picking up a spare comb blower if the current one is making some noise.
     
    slvrblkk, Oct 16, 2015
    #15 Top
    Geek likes this.
  16. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    yeah....I don't know what is the warranty on the motor.
     
    Geek, Oct 16, 2015
    #16 Top
    slvrblkk likes this.
  17. slvrblkk

    slvrblkk

    Joined:
    Oct 6, 2013
    Messages:
    6,644
    Likes Received:
    29,527
    Location:
    Northampton, PA
    Probably a year from purchase...I would assume?
     
    slvrblkk, Oct 16, 2015
    #17 Top
  18. DexterDay

    DexterDay Administrator

    Joined:
    Oct 2, 2013
    Messages:
    12,411
    Likes Received:
    31,628
    Location:
    Northeast Oh
    The impeller doesn't need a bigger motor. It may take a second or two longer to get it up to speed, but once it's at speed? It should be fine.

    That said, I installed the bigger impeller in my furnace and it helped tremendously. But after one week of hearing the motor sound different? I bought the bigger Harman motor (from Don as well). It mounted right up and spools up faster. Probably not needed, but now I have my old motor as a back up/replacement


    Have you tried plugging a few holes in that upper row of the pot yet?
     
    DexterDay, Oct 16, 2015
    #18 Top
  19. Geek

    Geek

    Joined:
    Oct 10, 2015
    Messages:
    262
    Likes Received:
    601
    Location:
    06770
    No, because I forgot to mention that all the holes get "buried" under the surface of the firebox, that area underneath is where the air comes in.
     
    Geek, Oct 16, 2015
    #19 Top
  20. DexterDay

    DexterDay Administrator

    Joined:
    Oct 2, 2013
    Messages:
    12,411
    Likes Received:
    31,628
    Location:
    Northeast Oh
    That is why you want to plug them.

    By plugging those holes. More air can come in through the other holes (under the pellets.. Not beside them, where it doesn't help with combustion or ash extraction).

    I have a pic of my buddies Baby Countryside burn pot. I will try to find it and post a pic.
     
    DexterDay, Oct 16, 2015
    #20 Top
Page 1 of 6