Carrier 50FK - Manual (Page 59)

START-UP CHECKLIST
MODEL NO.:
DATE:
SERIAL NO.:
TECHNICIAN:
I. PRE-START-UP:
Ⅺ VERIFY THAT UNIT IS LEVEL
Ⅺ VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
Ⅺ LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS
Ⅺ VERIFY THAT COMPRESSOR SUSPENSION SPRINGS HAVE BEEN LOOSENED PER INSTRUCTIONS
Ⅺ VERIFY OPENING OF ECONOMIZER HOODS
Ⅺ VERIFY INSTALLATION OF EXHAUST HOODS
Ⅺ CONFIRM THAT TUBING FOR SPACE AND SUPPLY DUCT PRESSURES HAS BEEN INSTALLED
Ⅺ VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
Ⅺ VERIFY THAT POWER SUPPLY MATCHES UNIT DATA PLATE
Ⅺ VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
Ⅺ CHECK GAS PIPING FOR LEAKS (48FK,JK ONLY)
Ⅺ CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE
Ⅺ CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREWS
ARE TIGHT
Ⅺ VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
Ⅺ OPEN SUCTION, DISCHARGE, AND LIQUID LINE SERVICE VALVES
Ⅺ CHECK COMPRESSOR OIL LEVEL SIGHT GLASS AND VERIFY PROPER LEVEL
Ⅺ VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR 24 HOURS
Ⅺ CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS: AB V AC V BC V
(AB + AC + BC)/3 = AVERAGE VOLTAGE = V
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE = V
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) = %
IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.
II. PRELIMINARY CHECKLIST ITEMS:
CONTROL SETTINGS
Ⅺ DIP SWITCHES SET TO MATCH INSTALLED ACCESSORIES:
SUPPLY AIR SET POINT RESET (DIP SWITCH NO. 4 ON)
MORNING WARM-UP (DIP SWITCH NO. 4 ON)
DEMAND LIMIT (DIP SWITCH NO. 5 ON)
Ⅺ SUPPLY AIR SET POINT (P1) SET BETWEEN 45 AND 70 F
Ⅺ ECONOMIZER MINIMUM POSITION (P5) SET PER PLANS
Ⅺ SUPPLY AIR SET POINT RESET SETTINGS:
RESET INITIATION TEMPERATURE (P7) (TYPICALLY 68 TO 72 F)
RESET LIMIT TEMPERATURE (P3) (TYPICALLY 60 TO 70 F)
Ⅺ MORNING WARM-UP TEMPERATURE (TYPICALLY 50 TO 65 F)
Ⅺ IGV/VFD DUCT PRESSURE SET POINT PER PLANS
Ⅺ BUILDING PRESSURE (MODULATING POWER EXHAUST) SET PER PLANS
Ⅺ DEMAND LIMIT SETTINGS PER PLAN:
SINGLE STEP DEMAND LIMIT (P4) SET (TYPICALLY 25 TO 50%)
TWO-STEP DEMAND LIMIT
DLCM-P1 SET (TYPICALLY 50 TO 75%)
DLCM-P2 SET (TYPICALLY 0 TO 25%)
Ⅺ OCCUPIED/UNOCCUPIED SWITCH INSTALLED PER FIG. 21 (CLOSE TO START UNIT)
CL-1