Carrier 48EJ Gas Heater User Manual


 
START-UP CHECKLIST
MODEL NO.:
SOFTWARE VERSION (SEE FIG. 16)
DATE:
SERIAL NO.:
TECHNICIAN:
PRE-START-UP:
VERIFY THAT DIP SWITCH SETTINGS ARE CORRECT
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTRUCTIONS
VERIFY INSTALLATION OF ECONOMIZER HOOD
VERIFY INSTALLATION OF ALL OPTIONS AND ACCESSORIES
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
CHECK GAS PIPING FOR LEAKS
CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE
VERIFY THAT UNIT IS LEVEL WITHIN TOLERANCES
CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SETSCREW
IS TIGHT
VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
VERIFY THAT SUCTION, DISCHARGE, AND LIQUID SERVICE VALVES ON EACH CIRCUIT ARE OPEN
START-UP
ELECTRICAL
SUPPLY VOLTAGE L1-L2
L2-L3 L3-L1
COMPRESSOR AMPS COMPRESSOR NO. 1 L1 L2 L3
COMPRESSOR NO. 2 L1 L2 L3
SUPPLY FAN AMPS (CV) EXHAUST FAN AMPS
(VAV) *
*VAV fan supply amps reading must be taken with a true RMS meter for accurate readings.
ADJUST VARIABLE FREQUENCY DRIVE (VFD) TO APPLICATION REQUIREMENTS.
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
F DB (Dry Bulb)
RETURN-AIR TEMPERATURE
FDB F WB (Wet Bulb)
COOLING SUPPLY AIR
F
GAS HEAT SUPPLY AIR
F
PRESSURES
GAS INLET PRESSURE
IN. WG
GAS MANIFOLD PRESSURE STAGE NO. 1
IN. WG STAGE NO. 2 IN. WG
REFRIGERANT SUCTION CIRCUIT NO. 1
PSIG CIRCUIT NO. 2 PSIG
REFRIGERANT DISCHARGE CIRCUIT NO. 1
PSIG CIRCUIT NO. 2 PSIG
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 48
CL-1