LRC Coil Company

NEWS
THE NEW D.O.E. STANDARDS | Begining of 2020 We will no longer make regular HS, VAH, RM, or VRM models. The EC versions will be the only models available. On the bright side, your customers will be saving tons of money on the energy savings, They will be quieter, and on the HSEC and the VAHEC models, they have filters already installed!
PRICE INCREASE | Due to the ever-increasing tariffs all P.O.’s placed after December 1st will reflect our new prices. For questions please contact our office at 562-944-1969 or email Jonathan at jholden@lrccoil.com. Thank you.

List Price

EDUCATION

Commercial AC vs Refrigeration – Or Why Can’t I use that Cheaper Mini-Split unit??

Most of the units shown on the internet are commercially available AC units. The standard for the industry is .012 thick copper tubes and most of the systems are not available with a coil coating so you will see coil failures fairly quickly. The LRC designs are based on a thicker copper .016 thick wall and all our wine coils are dipped in a water-based epoxy and cured in the oven. This is done because the wine vapors condense on the coil and get in the interface between the fin collars and the copper tube. The epoxy seals this area so the coils won’t get attacked by the acetic acid.

1. In the case of the mini-split type of system, we do not have an equivalent. We have not been able to find a mini-split evaporator that has a coated coil and can utilize the constant pressure expansion valve.

2. More flexibility. Some systems need cabling between the evap and condenser. The LRC systems are set up to do a pump down the type of system to facilitate installation.

3. Evaporators only. Some resellers sell the entire system. We depend on the wholesalers to provide the condensing unit along with the other system components. We do this because the conditions are different for a refrigeration system between Florida, Phoenix, and Seattle. And only the wholesalers tend to know how to configure a system for their local conditions. In addition, prefer to have the condensing units and other parts sourced locally so in the event of failure parts are more readily available.

MANY TIMES WE GET THE QUESTIONS, "HOW DO YOU SIZE THE CONDENSER WITH YOUR EVAPORATOR?".

HERE ARE SOME HELPFUL GUIDELINES WHEN SIZING.

SELECT CONDENSING UNIT WITH A LOWER CAPACITY THAN THE EVAPORATOR ( 90% to 100% OF EVAPORATOR )
DESIGN POINT - 38° SST (USE 40°F FOR SIZING PURPOSES) IF RUNNING ROOM AT 55°
GOLDILOCKS TYPE OF CONDITIONS
- USE A GOOD AVERAGE TEMPERATURE NOT WORST CASE SCENARIO
- ON HOT DAYS JUST LET THE SYSTEM RUN A LITTLE LONGER FOR THE OUT OF BOUNDS CONDITIONS
  - ROOMS ARE SIZED FOR 16 HOUR RUN DAY
- LOAD ON EVAPORATOR IS CONSTANT- ITS THE CONDENSING UNIT THAT NEEDS TO RUN A LITTLE LONGER
- SIZE TO A REASONABLE AMBIENT TEMPERATURE
  - IS IT INSIDE?
  - IS IT OUTSIDE?
  - EXAMPLES
    - SAN DIEGO- SIZE FOR 80° NOT 110°
    - PALM SPRINGS- SIZE FOR 100° OR SO AND LET IT RUN LONGER ON THE HOTTEST TIMES OF THE YEAR
- PUT A FAN CYCLING SWITCH ON THE CU TO KEEP THE HEAD PRESSURE UP TO 80° OR BETTER AMBIENT CONDITIONS TO PROTECT DURING LOW AMBIENT TIMES.
- CONDENSING UNIT SHOULD HAVE A SUCTION ACCUMULATOR

SO TO SUM IT ALL UP: SIZE AT A SLIGHTLY LOWER LOAD THAN WHAT THE ROOM IS, AT A PLUS 40° SST, AT A REASONABLE AMBIENT TEMPERATURE.

RM SERIES

LPAQ SERIES

HS SERIES

Newsletter Vol 2

SIZING CONDENSER TO EVAPORATOR