Carrier 48KHA Manual de usuario

HCarrier Corporation • Syracuse. N Y 13221Packaged Heating/Cooling UnitsNote to Installer: After installation, leave these instructions, Owner’s Manua

d. Make sure condensate drain pan is filled with water to ensure proper drainage.e. Make sure all tools and miscellaneous loose parts have been remo

6. Multiply result of step 5 by Btu heating value of gas to obtain total measured input in Btuh. Compare this value with heating input shown

2. Open air shutter very slowly until yellow tip just disappears, then secure air shutter in place with locking screw.3. Repeat steps 1 and 2

C — ContactorCap. — CapacitorComp — CompressorGV — Gas ValveIFM — Indoor Fan MotorIFMC — Indoor Fan Motor CapacitorIFR “ Indoor Fan Relay (Cooling)I

Table 6 — Model 48KHA.KLA Air Delivery (cfm)*at Indicated External Static Pressure and VoltageMODEL48-UNIT VOLTS- PHASE (60 Hz)BLOWERMOTORSPEEDCOlLtEX

Table 6 — Model 48KHA,KLA Air Delivery (cfm)*at Indicated External Static Pressure and Voltage (cont)MODEL48*UNITBLOWEREXTERNAL STATIC PRESSURE (in wg

CHECKING AND ADJUSTING REFRIGERANT CHARGE — Refrigerant system is fully charged with R-22 refrigerant, tested and factory sealed. For

INDOOR AIRFLOW AND ADJUSTMENTSTable 8 — Rated Cooling and Heating AirflowsModels 48KHA,KLA end-discharge units have direct-drive blower motors.

CONTROLS — All compressors have the following internal-protection controls:High-Pressure Relief Valve — This valve opens when pressure differe

Top RemovalAir FilterNOTE: When performing maintenance or service procedures that require removal of unit top, be sure to perform all ro

Table 1 — Perferjpiance DataMODEL 48-COOLINGCAPACITY(Btuh)*RATEDHEATINGINPUT(Btuh)OUTPUTCAPACITY(Btuh)ARItSOUNDRATING(Bels)KLA118310BE17,80040,00032,0

3. Remove and clean blower wheel.a. Ensure proper reassembly by marking wheel orientation and cutoff plate location.b. Remove screws holding

Remove control, blower and compressor eom- partment access panels to locate all electrical controls and wiring. Check all electrical conn

TROUBLESHOOTING CHARTTable 9 — Heating Service Analysis ChartSYMPTOMPROBABLE CAUSEREMEDYPilot will not lightNo spark at electrodeCheck air gap between

TROUBLESHOOTING CHARTTable 10 — Cooling Service Analysis Chart"1SYMPTOMPROBABLE CAUSEREMEDYCompressor and con- denser fan will not startPower fai

For replacement items use Carrier Specified PartsManufacturer reserves the right to discontinue, or change at any time, specifications or designs with

ROOFTOP INSTALLATIONlàWhen installing a Model 48KHA,KLA end discharge unit with a field-supplied downflow plenum, a field-supplied roof-mount

PLUGGED ACCESS HOLE ” FOR REFRIGERANT j!lH PRESSURE GAGE HOSES# MPTdrain conn*NOTON MODELS48KLAII8 THROUGH 136¡ KHA024 THROUGH 030.MODEL 48-KLA11

Step 2 — Make Gas Piping Connections — Amanual shutoff valve is shipped loose in the burner compartment or blower compartment. Connect one

Fig. 7 — Sediment Trap5. Install an accessible, external, manual shutoff valve in gas supply pipe within 6 ft of heating section.NOTE:

3. Install external, field-supplied air filter(s) in return-air ductwork where it is easily accessible for service. Recommended filter

Table 3 — Electrical Data (60 Hz)MODEL48-SERIESVOLTS-PHASEOPERATINGVOLTAGE*COMPR FLAMCAtMAXAMPSMAX FUSE SIZE (Amps)tMIN WIRE SIZE (AWG)tMAXWIREMinMaxR

IUsing cover removed from red lead, insulate loose terminal on orange lead. Wrap cover with electrical tape so that metal terminal cannot be seen.