Carrier 30GTR Specifications download pdf (Page 79)

C. Unit Start-Up (cont)

CHECK VOLTAGE IMBALANCE: AB AC BC

AB + AC + BC (divided by 3) = AVERAGE VOLTAGE = V

MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =

(MAX. DEVIATION)

VOLTAGE IMBALANCE = x 100 = % VOLTAGE IMBALANCE

AVERAGE VOLTAGE

IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START CHILLER!

CALL LOCAL POWER COMPANY FOR ASSISTANCE.

ASSURE THAT INCOMING POWER VOLTAGE TO CHILLER MODULES IS WITHIN RATED UNIT VOLTAGE

RANGE.

SYSTEM FLUID VOLUME IN LOOP: TYPE SYSTEM:

AIR CONDITIONING — MINIMUM 3 GALPERNOMINALTON(3.25LPERkW) = GAL (L)

PROCESS COOLING — MINIMUM 6 GALPER NOMINALTON(6.50LPER kW) =

GAL (L)

CHECK PRESSURE DROP ACROSS COOLER.

FLUID ENTERING COOLER:

PSIG (kPa)

FLUID LEAVING COOLER:

PSIG (kPa)

(PSIG DIFFERENCE) x 2.31 = FT OF FLUID PRESSURE DROP =

PLOT COOLER PRESSURE DROP ON PERFORMANCE DATA CHART (LOCATED IN PRODUCT DATA

LITERATURE) TO DETERMINE TOTAL GPM (L/s).

TOTAL GPM (L/s) =

UNIT’S RATED MIN GPM (L/s) =

GPM (L/s) PER TON = UNIT’S RATED MIN PRESSURE DROP =

(Refer to product data literature.)

JOB’S SPECIFIED GPM (L/s) (if available):

NOTE: IF UNIT HAS LOW FLUID FLOW, FIND SOURCE OF PROBLEM: CHECK FLUID PIPING, IN-LINE FLUID

STRAINER, SHUT-OFF VALVES, CWP ROTATION, ETC.

COOLER LOOP PROTECTION IF REQUIRED:

GALLONS (LITERS) OF BRINE ADDED:

PIPING INCLUDES ELECTRIC TAPE HEATERS (Y/N):

VISUALLY CHECK MAIN BASE BOARD AND EXV BOARD FOR THE FOLLOWING:

INSPECT ALL THERMISTORS AND EXV CABLES FOR POSSIBLE CROSSED WIRES.

CHECK TO BE SURE ALL WELL-TYPE THERMISTORS ARE FULLY INSERTED INTO THEIR RESPECTIVE

WELLS.

ARE ALL CABLES AND PIN CONNECTORS TIGHT? (Y/N)

ARE EXV, EMM, AND CXB BOARDS (IF INSTALLED) AND DISPLAY CONNECTIONS TIGHT?

CL-3

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

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Carrier 30GTR Specifications Page 79