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  1. Was this the Carrier "triple split"? How good...

    Was this the Carrier "triple split"?

    How good did they run?

    What was the original idea behind the design?
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    I believe the rotation is correct. I will...

    I believe the rotation is correct.

    I will double check Monday.

    Thanks.
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    Liebert DX condenser fans

    I have two 20 Liebert DX air cooled condensers that I observe different discharge airflow patterns on the fans.

    I observe the difference on the two constant speed fans.

    One fan discharges the...
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    Thanks! No reheat on these FCUs. They appear...

    Thanks!

    No reheat on these FCUs. They appear to be oversized for the load.
    In rooms with more than one FCU we get much lower humidity when we shut one FCU off.

    These FCUs have the thermostat...
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    Summertime humidity is 40% or higher. Today is...

    Summertime humidity is 40% or higher.
    Today is 57% according to the NWS.

    Each FCU has an outside air intake. most dampers at the FCU are set to minimum.

    Restroom exhaust fans run...
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    High Humidity - need advice

    I am experiencing very high humidity in my building.

    system description:

    Two-pipe system with fan coils in each room.

    60 ton chiller (Carrier GTN-060; four capacity steps)
    about 65 FCU...
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    Cost and the vertical configuration for the most...

    Cost and the vertical configuration for the most part.

    Not much room in my workshop/laundry/furnace room.

    No good place to install a horizontal.

    If I don't duct into existing system I can...
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    Duct configuration for Santa Fe Classic

    I would like to purchase a Santa Fe Classic for my home. The 'Classic is about my limit for the budget.

    The house is a Tri-Level; Lower level mostly slab on grade, middle level over dirt...
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    Fan Coil valve noise

    I have a building with about 130 Carrier 42V fan coils.

    A lot of these coils make a "rumble" noise when the 3-way valve strokes back to the bypass position.

    I also can hear noticeable water...
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    I have been able to confirm that the Honda...

    I have been able to confirm that the Honda EU3000is does not have a bonded neutral.


    Strange the furnace will run on generator power in emergency mode.

    Can I run the furnace in emergency...
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    Carrier 58MVP on generator

    I have connected my 58MVP to a Honda EU3000is generator.

    The generator is an inverter model and has a max 120VAC 23 amp rating.

    The furnace will start in but not stay running. if i switch the...
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    38YDA High Amp Draw --- Solved!

    A follow up from nearly two years ago...

    In addition to the tech visit from 2007, I spoke with a few contractors who said the unit was old and I should replace it.

    The unit survived the...
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    Thanks for the discussion. Actually it is the...

    Thanks for the discussion.

    Actually it is the computer dudes that are turning blue and freezing to death in the computer rooms. Actually had HP engineers lay cardboard on the floor to block the...
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    Computer room HVAC set points

    I have a data center with three systems, 30, 20, and 20 ton Liebert DX units.

    I have the room configured with hot aisle, cold aisle. Using this configuration we have been able to turn up the temp...
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    1,662

    Today a tech came out to check the unit. It was...

    Today a tech came out to check the unit. It was a little low on charge.
    Now I have 12 SH / 15 SC


    The tech thinks the high amp draw is due to the age of the unit. He recommended I replace the...
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    Here is head pressure and liquid line temp... ...

    Here is head pressure and liquid line temp...

    170 psi Liquid line temp 94.1

    outdoor temp 88

    According to the chart the system looks low.

    The evap coil was a little dirty...but not...
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    Thanks Doc, I guess my question is that IF...

    Thanks Doc,

    I guess my question is that IF with a TXV the unit can cool well even if not charged exactly to the subcooling chart then can an significant under or over charge show up as low or high...
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    The first time I measured amp draw was during the...

    The first time I measured amp draw was during the summer back in 1994 when the system was installed. I also measured amp draw during the winter and it was close to what I had in the summer. ...
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    Carrier 38YDA Heat Pump Questions

    Hello,


    I had a 38YDA 3 ton heat pump installed in 1994, It is running as a dual fuel setup with a 58MVP 60,000 BTU gas furnace.

    When the system was installed i measured the current draw on...
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    Thanks for the replies, phixitman: The...

    Thanks for the replies,

    phixitman: The chiller has the ComfortLink control panel.

    I don't know the volume of the system, I can approximate the lengths and diameter of the pipes. I need to...
  21. Replies
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    Carrier 30GTN Chiller troubles

    Hello,

    I have a building with two-pipe heat/cool loop with a 60 ton 30GTN chiller.
    Connected to the loop are about 60 FCUs, capacities per FCU vary from 7000 to 24000 BTU/H.

    I am the facility...
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    I like to turn the reheat off if they are never...

    I like to turn the reheat off if they are never likely to be used due to existing heat load. I had a incident once where we nearly dumped the Halon when the reheat smoked the dust off the elements. ...
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    The inverted traps at the condensers are for...

    The inverted traps at the condensers are for proper oil flow/return to the compressors. Right?
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    Liebert DX System/3 questions

    Hello,

    I am the customer that needs to sigh off a project that was recently complete in my datacenter. Two Liebert DX System/3 20 ton systems with Liebert condensers were installed. The...
  25. Or a nice condenser under the floor! Liebert...

    Or a nice condenser under the floor! Liebert dehumidifier anyone?

    Thanks to all for the info. I am going to speak with my facilities folks and see if I can convince them to get the lines...
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