Carrier Ecologic 30HXC076-271 - Page 96

CHECK PRESSURE DROP ACROSS THE COOLER:
ENTERING COOLER:
PSIG (kPa)
LEAVING COOLER:
PSIG (kPa)
(LEAVING − ENTERING) × 2.31 FT OF H
2
O/PSIG = FT OF H
2
O
(LEAVING − ENTERING) × 0.334 M OF H
2
O/kPa = MOFH
2
O
PLOT COOLER PRESSURE DROP ON PERFORMANCE DATA CHART (IN PRODUCT DATA LITERATURE) TO
DETERMINE TOTAL GALLONS/MINUTE (GPM) OR LITERS PER SECOND (L/S) AND FIND UNIT’S MINIMUM
FLOW RATE.
TOTAL GPM (L/S):
GPM/NOMINAL TON (L/S PER TON) =
M TOTAL GPM (L/S) IS GREATER THAN UNIT’S MINIMUM FLOW RATE
M TOTAL GPM (L/S) MEETS JOB SPECIFIED REQUIREMENT OF
GPM (L/S)
M COOLER HEATER FUSE INSTALLED, AND HEATERS ARE ACTIVE (IF USED)
CHECK CONDENSER WATER LOOP:
M PROPER LOOP CORROSION INHIBITOR INCLUDED
GALLONS (LITERS) OF
M INLET PIPING TO CONDENSER INCLUDES A 40 MESH STRAINER
CHECK PRESSURE DROP ACROSS THE CONDENSER (30HXC ONLY):
ENTERING CONDENSER: PSIG (kPa)
LEAVING CONDENSER:
PSIG (kPa)
(LEAVING − ENTERING) × 2.31 FT OF H
2
O= FT OF H
2
O
(LEAVING − ENTERING) × 0.334 M OF H
2
O/kPa = MOFH
2
O
PLOT CONDENSER PRESSURE DROP ON PERFORMANCE DATA CHART (IN PRODUCT DATA LITERATURE) TO
DETERMINE TOTAL GALLONS/MINUTE (GPM) OR LITERS PER SECOND (L/S) AND FIND UNIT’S MINIMUM
FLOW RATE.
TOTAL GPM (L/S):
GPM/NOMINAL TON (L/S PER TON) =
M TOTAL CONDENSER GPM (L/S) IS GREATER THAN UNIT’S MINIMUM FLOW RATE
M TOTAL GPM MEETS JOB SPECIFIED REQUIREMENT OF
GPM (L/S)
CL-4