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  1. #1
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,208

    I don't get to install many systems anymore, but I installed this one

    Original equipment a Lennox 4 ton from the early 70's:




    New Lennox equipment:
    XC14-048 4 ton
    C33-48B
    SL280UH090XV-48B
    PCO 16-28 Lennox PureAir with MERV 16 air filter, UV lights, Catalyst Plate with activated carbon
    Honeywell Focus Pro digital thermostat
    New bar type return air grills and supply air registers






    Installation notes:
    Indoors:
    Main PVC condensate drain is trapped with serviceable access tee/plug. Trapped so one does not hear air bubbling in the condensate pump and insulated to keep trap from sweating.
    Overflow PVC drain line is routed to pump in case of back-up of main drain.
    Pump safety switch is wired to open compressor circuit.
    Yellow pump drain hose (connected to 3/8" copper drain line) was purchased from McMaster Carr part number 5288K12 $1.54 FT.
    External TXV valve for easy access in case of need to service.
    Insulated case factory coil goes further up into sleeve so sleeve sheet metal does not need to be insulated.

    Outdoors:
    Added fused disconnect.
    Added two-inch ABS couplings to factory unit feet to elevate unit to three-inch elevation above grade (for code around here).
    Secured unit in place with (2) hold-downs.
    Taped over suction line insulation (Rubitex) with 10 MIL Christy's pipe wrap tape for UV protection.
    Installed two-piece pre-painted (white) line-set cover (backing wall plate and cover). Cover is made from pre-painted 12" wide aluminum gutter material. We break it up in our shop.
    Refrigerant system was put together with Nitrogen flow, vacuum pulled to 300 micron's and adjusted to 8° Sub Cooling per factory specs.

    John G. Kopp President
    Ocean Air Conditioning & Heating Co.
    Laguna Niguel, CA

  2. #2
    Join Date
    Jan 2013
    Location
    Western Ky
    Posts
    151
    Nice sman3s

  3. #3
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    well done..... that gas flex would fail here..... inspector would shut it off in 2 seconds
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  4. #4
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    17,941
    Why two condensate lines from the coil?
    Behind the ostensible government sits enthroned an invisible government owing no allegiance and acknowledging no responsibility to the people.

    Theodore Roosevelt

  5. #5
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    7,031
    Quote Originally Posted by carmon View Post
    well done..... that gas flex would fail here..... inspector would shut it off in 2 seconds
    Why? You can't use appliance connectors?

  6. #6
    Quote Originally Posted by carmon View Post
    well done..... that gas flex would fail here..... inspector would shut it off in 2 seconds
    as long as the Flex does not pass through the cabinet into the combustion area then the Flex is legal. that according to International Mechanical Code and several other mechanical authorities.

  7. #7
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    here it has to be straight for a furnace and follow the contour of a hot water tank..... weird rules in this area......
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  8. #8
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    7,031
    Quote Originally Posted by carmon View Post
    here it has to be straight for a furnace and follow the contour of a hot water tank..... weird rules in this area......
    So you can use them you just can't bend them?

  9. #9
    Join Date
    Apr 2006
    Location
    South West Ohio
    Posts
    400
    We are not allowed to use the flex connectors like that either, We can use flex pipe, but the local inspector wants to see at least 3 feet of black iron pipe on the furnace.

  10. #10
    Join Date
    Aug 2008
    Location
    San Clemente, CA
    Posts
    1,208
    Quote Originally Posted by coolwhip View Post
    Why two condensate lines from the coil?
    When it comes to potential water leakage I like to think like the space shuttle people do. In case the main drain or trap backs up the overflow drain line will kick in and drain water before water would overflow drain pan. If I had not run this secondary line water would leak from equipment in this interior room. When it comes to water damage I have seen $10,000 claims and they were the cheep ones. Best to do everything that can be done to avoid damage claims or liability. Plus the manufacturer (Lennox) requires this or a switch for the secondary.

    John
    Inventor/Manufacturer:
    KoppLift™ Hand Truck Lifting Bar
    http://www.amazon.com/shops/JohnGKoppLLC
    Video
    http://youtu.be/FsSViwAEz7A

  11. #11
    Nice and clean install...did u do any duct work?

  12. #12
    Join Date
    Jul 2013
    Posts
    23
    secondary drain line does no good no one would ever know primary is stopped up! txv will sweat all over unit,p-trap not needed in positive flow coil,disconnect not needed if breaker right there! looks good though

  13. #13
    Critckize much?

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