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  1. #1
    Join Date
    Nov 2002
    Location
    NJ - WORK IN NYC AREA
    Posts
    1,711

    OLD CARRIER COND LOW AMBIENT NEEDED

    Have an old Carrier Condensing unit. Our rep. says they don't make a low ambient kit for it?? Hard to beleive. Any of you old time carrier guys can assist??

    M# 38E012500 SER# P15833 208 3 PH Has two 1PH motors.

    I know I can rig some thing but would like to go with motor master if possible. Would anyone know if it was used in this unit. Has original motors!!!!
    "My hands are for sale"

  2. #2
    Join Date
    Feb 2010
    Location
    butler pa
    Posts
    1,073
    cant you get a ball bearing motor and add the motormaster ?

  3. #3
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

    *

    retro a new low ambient kit

    why do you need the old style?



    .

  4. #4
    Join Date
    Jan 2008
    Location
    East of big city prices.
    Posts
    3,775
    I will check for you.

  5. #5
    Join Date
    Nov 2002
    Location
    NJ - WORK IN NYC AREA
    Posts
    1,711

    Wink

    I was going to refit it but I did some checking on carrier site. Our rep told us its obsolete.

    I found unit on their site. Calls for a Motor master and fan Pressure switch on second fan. Also TD on LP control.

    I'll order parts in morning.

    Thank all you guys for your input!!
    Mr HVAC
    "My hands are for sale"

  6. #6
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    226
    Carrier motor master works good,but expensive.Penn makes the P-66 pressure actuated fan control(I have used and like this control) ICM also makes a good control(ICM325hn) this is more of an eletronic control that senses liquid line temperature and adjusts fan speed.It is also good for sleeve and ball bearing motors.If money is the problem.you can use a fan cycle control.I don't care for them, they cause fluctuating pressures. Check local parts house,Motormaster is (as I think you know) sold at carrier dealer.

  7. #7
    Join Date
    Oct 2009
    Location
    Atlanta,Ga.
    Posts
    226
    ICM also makes a good pressure switch bypass delay on make timer for low ambient startup ICM part# ICM1758.Only about $20.00 and works good.

  8. #8
    Join Date
    Sep 2002
    Location
    Hampton Roads, Virginia
    Posts
    1,735
    P66 is on the way out, the replacement is the P266 I believe.

    Kevin
    The first rule of any technology used in a business is that automation applied to an efficient operation will magnify the efficiency. The second is that automation applied to an inefficient operation will magnify the inefficiency. - Bill Gates

  9. #9
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

    *

    Quote Originally Posted by klrogers View Post
    P66 is on the way out, the replacement is the P266 I believe.

    Kevin
    look at all options before forking out the cash for a p66

    especially for equipment so old, they don't even make parts for it anymore



    .

  10. #10
    Join Date
    Jul 2004
    Location
    NW Arkansas
    Posts
    1,288
    Just get an ICM single phase head pressure controller for each motor unless you want to control one of the motors with a high pressure fan control. Just be sure to install the sensor in the correct part of the coil and do not attach it to the LL. All my air to air units run year round. I have had good luck with the ICM and the price is not too bad.
    Signature on hold. Trying to find a real Jefferson quote I like. Others here have bogus Jefferson quotes too.

  11. #11
    Join Date
    Nov 2002
    Location
    NJ - WORK IN NYC AREA
    Posts
    1,711
    Thanks guys for all of your input. Will probably go with a motor master.
    "My hands are for sale"

  12. #12
    Join Date
    Jan 2008
    Location
    East of big city prices.
    Posts
    3,775
    Quote Originally Posted by mrhvacmechanic View Post
    Thanks guys for all of your input. Will probably go with a motor master.
    I like your way of thinking.

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