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  1. #1
    Join Date
    Jul 2008
    Posts
    17

    Confused Which Coil for this equipment?

    Can someone tell me what is the right Lennox coil for this equipment (or if there is more than one which will work, which one is better and why)? Also, is there any specfic air filter you would recommend. Thank you.

    Downstairs Units
    Lennox XC15-036 3 ton 15 SEER A/C
    Lennox G61MPV-90 90,000 BTU 94% effieicnt gas furnace with variable speed blower

    Upstairs Units
    Lennox XC15-030 2-1/2 ton 15 SEER A/C
    Lennox G60UHV-070 70,000 BTU 80% efficient gas furnace with variable speed blower

  2. #2
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,158
    Quote Originally Posted by JJMJD View Post
    Can someone tell me what is the right Lennox coil for this equipment (or if there is more than one which will work, which one is better and why)? Also, is there any specfic air filter you would recommend. Thank you.

    Downstairs Units
    Lennox XC15-036 3 ton 15 SEER A/C
    Lennox G61MPV-90 90,000 BTU 94% effieicnt gas furnace with variable speed blower

    Upstairs Units
    Lennox XC15-030 2-1/2 ton 15 SEER A/C
    Lennox G60UHV-070 70,000 BTU 80% efficient gas furnace with variable speed blower
    Have the contractor that you choose provide you with the correct ARI certificate number.

    There are most likely multiple choices for your equipment, and since you have variable speed equipment all three items must be matched.

    I would look it up but I have 10,000 things to do right now.

  3. #3
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,158
    C33-43 with a G61MPV-36C-090 is rated at 15.20 SEER Cert # 1329808

  4. #4
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,158
    C33-31 with a G60UHV-36B-070 is rated at 15.20 SEER ARI cert # 1329596.

    Both of them need TXV's etc...........I just did the quickest search

    The blowers have to match. A G61MPV-60C-090 might use a different combo..........I did not check for that!

    And if that second story unit is being installed horizontal in an attic, well that's a different coil again.

  5. #5
    Join Date
    Jul 2008
    Posts
    17
    Hey Bob - Thank you for your help.

    Is the TVX automatically included or do I need to make sure it is on the bid?

  6. #6
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
    Posts
    3,350
    Bob is a Dave Lennox premier dealer, so he's the one to ask about your Lennox equipment. However, from his response, I got the inclination from his response that you needed the TXV separately. The C33 from the factory has an orifice metering device, and the TXV is an option. The CX34 has a TXV factory installed. My info comes from Lennox's engineering data for both coils. So it looks like either coil could be made to work. What did the contractor who quoted the C33 say about the TXV?

  7. #7
    Join Date
    Jul 2008
    Posts
    17
    Thank you. I will be asking the contractor tomorrow. Used the long weekend to try to figure out what to ask!

  8. #8
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
    Posts
    3,350
    I think you have a good idea of what to ask now... thermostat (IAQ possibility), coil (TXV), and filter (one ontractor didn't specify any). Good luck with the new system.

  9. #9
    Join Date
    Jun 2008
    Location
    west point, ga.
    Posts
    328
    Yea anything with x in the mod.# is 410a on lennox and has to have a txv.

  10. #10
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,158
    Quote Originally Posted by RyanHughes View Post
    Bob is a Dave Lennox premier dealer, so he's the one to ask about your Lennox equipment. However, from his response, I got the inclination from his response that you needed the TXV separately. The C33 from the factory has an orifice metering device, and the TXV is an option. The CX34 has a TXV factory installed. My info comes from Lennox's engineering data for both coils. So it looks like either coil could be made to work. What did the contractor who quoted the C33 say about the TXV?
    Correct, the TXV is field installed with the C33 coil.

  11. #11
    Join Date
    Jul 2008
    Posts
    17
    Thanks to all who responded - the information is very helpful.

  12. #12
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,158
    Quote Originally Posted by JJMJD View Post
    Thanks to all who responded - the information is very helpful.
    Now your job Monday is to tell us what your contractor is providing.

    We need the blower size on the G61MPV also, that makes a difference if it's a 36 or a 60.

    Is the G60UHV up stairs a horizontal?

  13. #13
    Join Date
    Jul 2008
    Posts
    17
    I will post when I get the info from the contractor. Current bid just says (a) XC-15-036 3 ton 15 SEER A/C, G61MPV-90 90,000 BTU 94% efficent gas furnace with variable speed blower and CX-33-038 3-ton coil and (b) XC-15-030 2-1/2 ton 15 SEER A/C, G60UHV-070 70,000 BTU 80% efficent gas furnace with variable speed blower and CX-33-038 3-ton coil. The upstairs unit is in a closet and is horizontal (up-flow). Thank you.

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