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refrigeration

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I have this customer who is renovating his entire deli....he has a low temp walk in box in place in the store....he plans to have a medium temp walk in installed outside behind the store...he asked if his low temp refrigeration system be used as a medium temp I believe it's a 6HP heat craft with a Copeland scroll....I told me already that I doubt it can because compressors have different operating ranges.....so can it be used for medium temp....can I use the equipment with some changes? Paul s
ASM Mechanical Company
Located in Staten Island NY
Servicing all 5 boroughs of NYC.
347-692-4777
ASMMECHANICALCORP@GMAIL.COM
ASMHVACNYC.COM
https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company

Comments

  • unclejohn
    unclejohn Member Posts: 1,833
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    Would not recommend since the compressor would be operating at it's pull down range all the time and would most likely trip on overload.
  • Paul S_3
    Paul S_3 Member Posts: 1,261
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    Thanks
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • Techman
    Techman Member Posts: 2,144
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    What comp is in the freezer? If it is possible the new WIRefrig would be bigger than the WIF
  • aircooled81
    aircooled81 Member Posts: 205
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    Some changes, im sure you could piece it together.
    Might want a whole new evap, but atleast the txv will likely need changing.
    If you want to reuse the old sled, pull its numbers up on line or have the refrg supply house help ya. See what size box at your new setpoint will allow your old condenser to work at. Remember if your moving this outside, the constant condensing load you had inside (if it was on the walk in, in the kitchen) will likely change and adjust your load too.
    If its going to be way colder and your putting this outside, you'll need some head pressure control to assist.
    He'll save a buck on a condenser, you'll have some old equipment to work on. Sounds like a fair trade to me!
  • pecmsg
    pecmsg Member Posts: 4,883
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    Without #'s we can only guess. Mod, Ser & Sizes

    Like Little Big Man "Sometimes the Magic works Sometimes it doesn't"
  • Paul S_3
    Paul S_3 Member Posts: 1,261
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    we are using the existing walkin box that was inside building. its 7 x 14 x 10......im purchasing all new equipment in a couple of weeks for this job....the box will have to be around 35f ..I myself have never sized refrig equipment before....I came across the Bohn quick load calculator.... its telling me around 2hp...I had the supply house run numbers there telling me 3 hp....don't want to oversize...product is some dairy and produce....insulation is 5'' thick... exposed at all sides....coldest day would be around zero ....warmest around 100....its in NYC
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • SWEI
    SWEI Member Posts: 7,356
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    What were the assumptions for frequency of access and new product weight/temp loaded?
  • Paul S_3
    Paul S_3 Member Posts: 1,261
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    6 times per hour....3000lbs
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • SWEI
    SWEI Member Posts: 7,356
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    Both calcs used the same inputs? Hmm...
  • Paul S_3
    Paul S_3 Member Posts: 1,261
    edited February 2016
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    Yes .....thats what i told the supply house dont know if they used it....i actually came up with 11k btus....would that be roughly 1.5 hp med temp?.....supply house told me way too small....but i know everyone oversizes
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • Harvey Ramer
    Harvey Ramer Member Posts: 2,239
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    Maybe they designed for a wet cooler.
    Paul S_3
  • Paul S_3
    Paul S_3 Member Posts: 1,261
    edited February 2016
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    Whats a wet cooler?high humidity?
    ASM Mechanical Company
    Located in Staten Island NY
    Servicing all 5 boroughs of NYC.
    347-692-4777
    ASMMECHANICALCORP@GMAIL.COM
    ASMHVACNYC.COM
    https://heatinghelp.com/find-a-contractor/detail/asm-mechanical-company
  • Techman
    Techman Member Posts: 2,144
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    A "wet cooler" is for Fruit & Veggies that have a "thin skin,porous skin" like lettuce ,Peaches,Strawberries. A Dry WI is for a "harder skin", like Watermelon,Lemons,Cucumbers.