START-UP CHECKLIST
MODEL NO.:
DATE:
SERIAL NO.:
TECHNICIAN:
PRE-START-UP:
M
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
M
LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS
M
VERIFY INSTALLATION OF ECONOMIZER HOOD
M
VERIFY INSTALLATION OF EXHAUST HOOD
M
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
M
VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
M
CHECK GAS PIPING FOR LEAKS (48 SERIES UNITS ONLY)
M
CHECK THAT INDOOR-AIR FILTER IS CLEAN AND IN PLACE
M
VERIFY THAT UNIT IS LEVEL
M
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW
IS TIGHT
M
VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
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
EXHAUST FAN AMPS
ELECTRIC HEAT AMPS
L1
L2
L3
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
F
DB (Dry-Bulb)
RETURN-AIR TEMPERATURE
F
DB
F
WB (Wet-Bulb)
COOLING SUPPLY AIR
F
GAS HEAT SUPPLY AIR
(48 SERIES UNITS ONLY)
F
ELECTRIC HEAT SUPPLY AIR
(IF UNIT IS SO EQUIPPED)
F
PRESSURES
GAS INLET PRESSURE (48 SERIES UNITS ONLY)
IN. WG
GAS MANIFOLD PRESSURE
(48 SERIES UNIT ONLY)
VALVE NO. 1
IN. WG
VALVE NO. 2
IN. WG
REFRIGERANT SUCTION
CIRCUIT NO. 1
PSIG
CIRCUIT NO. 2
PSIG
REFRIGERANT DISCHARGE
CIRCUIT NO. 1
PSIG
CIRCUIT NO. 2
PSIG
M
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 47-49
GENERAL
M
ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
----------------------------------------------------------------------------------------
CUT
ALONG
DOTTED
LINE
Copyright 1996 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
1
Tab
1a 1b
PC 111
Catalog No. 564-818
Printed in U.S.A.
Form 48/50D,N-9SI
CL-1
3-96
Replaces: 48DJ,DK-3SI;
48/50NB,NP-1SI; 50DJ,DK-9SI
Summary of Contents for 48DJ
Page 58: ...Fig 66 Gas Heat Sections 48DJ NP034 044 Units 58...
Page 59: ...Fig 67 Gas Heat Sections 48DJ NP054 074 Units 59...
Page 60: ...Fig 68 Gas Heat Section 48DK034 044 Units 60...
Page 61: ...Fig 69 Gas Heat Section 48DK054 074 Units 61...
Page 62: ...Fig 70 Typical Wiring Schematic 48 50DJ 50DW Units 054 074 Shown 62...
Page 63: ...Fig 70 Typical Wiring Schematic 48 50DJ 50DW Units 054 074 Shown cont 63...
Page 64: ...Fig 71 Typical Wiring Schematic 48 50DK 50DY Units 054 074 Shown 64...
Page 65: ...Fig 71 Typical Wiring Schematic 48 50DK 50DY Units 054 074 Shown cont 65...
Page 66: ...Fig 72 Typical Control Wiring Schematic 48 50NP 50NB Units 054 074 Shown 66...
Page 67: ...Fig 72 Typical Control Wiring Schematic 48 50NP 50NB Units 054 074 Shown cont 67...
Page 68: ...Fig 72 Typical Control Wiring Schematic 48 50NP 50NB Units 054 074 Shown cont 68...
Page 69: ...Fig 73 Typical Power Wiring Schematic 48 50NP 50NB Units 054 074 208 230 and 460 v Shown 69...
Page 71: ......