Results 1 to 11 of 11
  1. #1
    Join Date
    Sep 2005
    Posts
    1
    I'm looking for any technical information on an older Lennox forcedair gas furnace, model G803-105-1. Any technical information, schematics, installation info, etc. would be greatly appreciated.

  2. #2
    Join Date
    Apr 2004
    Location
    Bartlett, IL
    Posts
    6,619
    Looks like a 105K btu furnace.

  3. #3
    Join Date
    Dec 2004
    Location
    LONG ISLAND, NY
    Posts
    20
    G80Q-3-105--3Ton drive,105K

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,241
    G8 furnace model
    Q3 is the 3 ton drive
    never seen a 105, usually 100
    -1 series #

  5. #5
    Join Date
    Dec 2004
    Location
    chgo berbs
    Posts
    26


    105 is the right btu

  6. #6
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,903
    55% to 60% AFUE when new, slightly higher if it has electronic ignition. Up to 70% if a damper was installed.

  7. #7
    Join Date
    Jun 2004
    Posts
    956
    shouldnt that have a split HX on it by now?

  8. #8
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,748
    Originally posted by amd
    55% to 60% AFUE when new, slightly higher if it has electronic ignition. Up to 70% if a damper was installed.

    damper and ignition not even available on G10, doubt they were available on this old beast.

  9. #9
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,903
    Some of the G8s aren't that old; they built them in Canada until '91/92 when the 78% minimum went into effect. The newer ones have electronic ignition - not sure about the damper though.

  10. #10
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,748
    damn Amd your right! did not have parts program at home when i said they did not have spark ign. davenet did not show it but parts program does. forgot you guys up there had stuff longer. don't think i have ever seen one made after very early 70s.

  11. #11
    Join Date
    Jun 2004
    Posts
    956
    I see alot from 88/89 and condemn most of them

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