Results 1 to 4 of 4

Thread: SLP98V fan

  1. #1
    Join Date
    Jan 2011
    Posts
    42

    SLP98V fan

    I have this Lennox modulating furnace and the icomfort thermostat.
    I usually have my fan at circulate, however when I have it like that the fan doesn't kick in in full speed, the problem with that is some of my return ducts are not sucking enough air ( I did the napkin test) and thus might be creating positive pressure.

    I kicked in the thermostat high and the fan went full speed and did the napkin test again and it actually got stuck to the duct this time...

    I want to try to create a better ventilation in the house. One of my rooms smells like the air is stale in it when I open the door.

    Should I program the icomfort to make the fan blow faster . Is it worth it ?
    Even when I have the fan setting as On , the fan is slow....
    If its worth it can someone walk me on how to do this....

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,757
    The returns shouldn't hold a napkin when the VS blower is on low speed/CFM.

    Its not creating a positive pressure in those rooms.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Jan 2011
    Posts
    42
    Thanks for the quick reply...

    So I should leave it alone on circulate?

    The reason I want more ventilation is I am getting some condensation and some frost on my basement windows..
    I have shut off the humidifier completely. The temp outside is around 16F

    The humidity in the main level is around 18% , downstairs in basement around 35% (walk in basement)

    So I think creating better ventilation will overcome these issues, what do you think...

    Quote Originally Posted by beenthere View Post
    The returns shouldn't hold a napkin when the VS blower is on low speed/CFM.

    Its not creating a positive pressure in those rooms.

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,757
    Just let the blower run on low to keep the air mixed.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event