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  1. Thread: Carrier 38AKSO14

    by rmac2
    Replies
    19
    Views
    1,905

    I was a little confused in your statement. If...

    I was a little confused in your statement. If there is a liquid line solenoid and it closes the suction pressure will drop and the refrigerant will all go into the condenser not the evap coil.Sounds...
  2. Thread: Carrier RTU

    by rmac2
    Replies
    28
    Views
    2,394

    I will agree with you, older carrier units were...

    I will agree with you, older carrier units were good but as you know alot of equipment has declined in craftmanship. But I have worked on alot of rooftop units and by far CARRIER UNITS have been the...
  3. Replies
    27
    Views
    14,605

    I usually charge the system up once. If I am...

    I usually charge the system up once. If I am called back in a short period of time I will then spend time searching for leak. Charge may last a while and extra time spent on first service call is not...
  4. Thread: Carrier RTU

    by rmac2
    Replies
    28
    Views
    2,394

    We have had similar problems with these rooftops....

    We have had similar problems with these rooftops. We had one mechanic remove the filter drier he installed and blew out liquid line with nitrogen. Unit ran good and was not freezing. Someone on this...
  5. Thread: N2 bus question

    by rmac2
    Replies
    6
    Views
    711

    Why cant you run some wire and daisy chain the...

    Why cant you run some wire and daisy chain the units. Might seem like a hassle but will probably save you problems later. How long have the units been on line and have u had any troubles so far?
  6. Replies
    15
    Views
    2,045

    Thanks for all your info on this subject. We...

    Thanks for all your info on this subject. We probably won't be modifing the existing units. Too much money and too much uncertainty. But we will look into that GREEN idea for make up air heat...
  7. Thread: Carrier 38AKSO14

    by rmac2
    Replies
    19
    Views
    1,905

    This unloader is operated on pressure only. the...

    This unloader is operated on pressure only. the suction pressure will drop if compressor is running at full capacity.get some literature from your carrier distibutor and it will show you how to...
  8. Thread: CARRIER RTU's

    by rmac2
    Replies
    13
    Views
    2,084

    CARRIER RTU's

    Has anyone had problems with installing liquid line driers on say a 48tje rooftop? One of our techs replaced a compressor took the factory strainer out and installed a 3/8 drier. liq. line...
  9. Replies
    15
    Views
    2,045

    carnak, it is a small reznor make up air unit....

    carnak, it is a small reznor make up air unit. about 200,000btu and 2000cfm. We were thinking 5ton.We dont have any room. Only a space inside unit between outlet of blower and supply duct work. We...
  10. Replies
    15
    Views
    2,045

    Make up air units with dx cooling

    There is no bms on unit. there is a space after blower outlet inside unit to install dx coil. these make up air units are gas fired for heating. Customer does not have money to install new makeup air...
  11. Replies
    15
    Views
    2,045

    dx cooling in 100% make up air unit

    our company wants to add a dx cooling coil inside an existing reznor make up air unit that provides air to five floors. each floof has a supply grille at end of hallway.We are just looking to improve...
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