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Содержание 48FK034

Страница 1: ...ON CONFIGURATION OPERATING SEQUENCE Demand Limit 18 SINGLE STEP DEMAND LIMIT TWO STEP DEMAND LIMIT INSTALLATION CONFIGURATION OPERATING SEQUENCE Page Control From Remote Building Management System BMS...

Страница 2: ...hese units contain facto ry installed controls which provide full system management The unit controls also perform self diagnostic tests at unit start up monitor operation of the unit and provide alar...

Страница 3: ...veral status switches are also monitored These switches are connected to the processor at pin terminal connector J2 See Fig 3 and Table 2 In addition to the unit status switch inputs the processor boa...

Страница 4: ...e not used on these units CONNECTOR J2 TERMINAL NO STATUS SWITCH UNIT SIZE 034 104 1 2 Oil Pressure Circuit 2 Jumpered 3 4 Oil Pressure Circuit 1 Jumpered 7 8 Loss of Charge Circuit 2 LPS2 9 10 Loss o...

Страница 5: ...rocessor board controls the display board The display board is connected to the processor board by a ribbon cable and has an LED light emitting diode display showing the status of the unit and diagnos...

Страница 6: ...Relay K5 CR2 J6 6 Stage 6 Compressor Relay K6 Not Used J6 7 Economizer Open Relay K7 EOR J6 8 Economizer Close Relay K8 ECR J5 1 Supply Fan Relay K9 115 vac IFC J5 2 Morning Warm Up Relay K10 HIR J5...

Страница 7: ...oint Single Step Demand Limit The single step de mand limit provides a means to limit the capacity of the VAV unit using an external switch Single step demand limit will limit the compressor displacem...

Страница 8: ...UPPLY SECTION 50FY JY ONLY AND EXTENDED PLENUM SECTION 50FKX FKY JKX JKY Fig 7 Thermistor T1 Location 48FK JK 50FY JY and 50FKX FKY JKX JKY 034 048 Units FAN DISCHARGE ELECTRIC HEAT SECTION Fig 8 Ther...

Страница 9: ...AND EXTENDED PLENUM SECTION 50FKX FKY FMX FMY JKX JKY Fig 9 Thermistor T1 Location 48FK FM JK 50JY and 50JKX JKY 054 074 Units and 50FKX FKY FMX FMY and 50FS FY054 104 Units FAN DISCHARGE ELECTRIC HE...

Страница 10: ...ry installed economizer op tion Enthalpy is sensed by a controller located behind the end outside air hood The control can be accessed by removing the upper hood filter See Fig 17 48FM and 50FM FS Uni...

Страница 11: ...11 054 UNITS 064 074 078 UNITS 088 104 UNITS Fig 14 Thermistor T3 and T4 Locations Size 054 104 Units...

Страница 12: ...dulate the power exhaust fan motor no 1 and stage the power exhaust fan motor no 2 in order to maintain building static pressure The PE VFD is located at the return air end of the unit of the opposite...

Страница 13: ...lay is located in the unit control box When unit goes into Heating mode interlock relay is energized providing switch closure or opening depending on how field power source is set up to open the room...

Страница 14: ...14 Fig 20 Unit Control Box Arrangement Sizes 034 048...

Страница 15: ...15 Fig 21 Unit Control Box Arrangement Sizes 054 078...

Страница 16: ...16 Fig 22 Unit Control Box Arrangement Sizes 088 and 104...

Страница 17: ...3 494 35 0 15026 7 3 464 36 0 14613 9 3 434 37 0 14213 6 3 404 38 0 13825 5 3 373 39 0 13449 2 3 343 40 0 13084 2 3 312 41 0 12730 1 3 281 42 0 12386 6 3 250 43 0 12053 3 3 219 44 0 11730 0 3 187 45...

Страница 18: ...O each This accessory control provides for a first step reduction of 50 to 100 of the maximum com pressor staging the second step provides for reduction between 0 and 49 The exact percentage of capaci...

Страница 19: ...ed the compressor cooling capacity is reduced by the amount set on potentiometer P4 When demand limit is in effect the LED display will show code 22 If a potentiometer setting or input is out of range...

Страница 20: ...able resistance transducer Kele RES 1 or equiva lent range 0 to 1000 ohms Series resistance with potentiometer suitable for manual adjustment to 12 5 to 13 0 k ohms total resistance Field Connections...

Страница 21: ...s or relays that will se lectively interrupt and override standard factory control se quences See Table 5 Smoke control mode Pressurization requires the economiz er function Evacuation and Smoke Purge...

Страница 22: ...open 4 Power exhaust dampers if equipped will close 5 Power exhaust fans if equipped will turn off Evacuation At command from the field switches for Evacu ation mode see Table 5 1 Supply fan will tur...

Страница 23: ...way out from the unit in the main trunk duct at a location where a constant duct pres sure is desired The duct pressure is sensed by a pressure transducer The pressure transducer output is directed to...

Страница 24: ...B2 SW 1 7 8 TB2 TB2 SW 2 REMOVE JUMPER TB4 SW 3 TB4 1 5 TB2 TB2 13 2 SW 4 1 2 TB2 TB2 SW 5 REMOVE JUMPER TB2 SW 6 TB2 13 1 TB3 TB3 3 7 SW 9B HIR 4 5 REMOVED FROM TB3 7 TB4 3 7 SW 9B HIR 4 5 REMOVED FR...

Страница 25: ...cated in the auxiliary control box Use a nominal 1 4 in plastic tubing For instructions on adjusting the BP control set point refer to Start Up High Capacity Modulating Power Exhaust section in this b...

Страница 26: ...nly be adjusted when control power is deenergized See Table 12 for DIP switch purposes and Table 10 for factory settings of the switch positions POTENTIOMETER DESCRIPTION LOCATION CONTROL VALID RANGE...

Страница 27: ...i ometer specifies the minimum opening position for the optional economizer during running periods It has both a valid range and an operational range of 0 to 100 SASP RESET TEMPERATURE P7 This potenti...

Страница 28: ...ed to desired set point Supply Fan Control with VFD Option TheVFD option will modulate Supply Fan motor and thus wheel speed to maintain the static pressure in the ductwork Set point for the VFD optio...

Страница 29: ...IFCB 9 Wait for the VFD display to go blank and remove VFD cover without touching any interior components 10 Ensure that the charge indicator lamp is out which indi cates that the VFD is discharged Th...

Страница 30: ...the proper phase sequences to the power exhaust fan motor The exhaust fan motor operates in proper rotation regardless of the phase sequence to the unit If upon start up the outdoor fans operate back...

Страница 31: ...below and shown in Tables 16 18 1 Quick Test Steps 1 1 3 Unit Configuration and Switch Check The microprocessor in unit control system is pro grammed by 2 switch assemblies located on processor board...

Страница 32: ...1 Reset On Switch On DIP Switch No 2 6 0 or 1 0 No Economizer Switch Off 1 Economizer On Switch On DIP Switch No 3 7 0 or 1 0 No Warm Up Switch Off 1 Warm Up Used Switch On DIP Switch No 4 8 0 or 1 0...

Страница 33: ...stor T10 or Accessory Reset Potentiometer P7 1 9 1 1 Potentiometer OK 0 Potentiometer Faulty Supply Air Set Point Potentiometer P1 2 0 1 1 Potentiometer OK 0 Potentiometer Faulty or Option not used Ac...

Страница 34: ...e of the economizer position potentiometer P2 for full economizer operation The processor loads the necessary con stants for proper unit operation and checks the thermistors and other potentiometers f...

Страница 35: ...t the load due to unacceptable outdoor air enthalpy the dampers will return to the minimum position as determined by P5 Compressors unloaders and condenser fans will be cycled to maintain a supply air...

Страница 36: ...ompres sor no 1 runs at 2 3 capacity and compressors no 2 and no 4 are running at full capacity The crankcase heater on compressor no 4 is deenergized Fans OFM1 OFM2 OFM3 and OFM4 are operating Stage...

Страница 37: ...37 074 078 UNITS 054 088 UNITS 088 104 UNITS 104 UNITS Fig 43 Component Arrangement 054 104 Units 054 064 UNITS...

Страница 38: ...rol with fan no 1 providing modu lating control from 0 to 50 of total exhaust capability and fan no 2 being staged On Off for a step of 50 of total exhaust capability according to damper position on f...

Страница 39: ...39 Fig 44 Modulating Power Exhaust Component Locations Sizes 034 048...

Страница 40: ...40 Fig 45 Modulating Power Exhaust Component Locations Sizes 054 104 48FK 50FK JK Shown...

Страница 41: ...41 Fig 46 Modulating Power Exhaust Return End Sheet Metal Skin Detail Sizes 034 048 Fig 47 Modulating Power Exhaust Return End Sheet Metal Skin Detail Sizes 054 104...

Страница 42: ...FF ON 12 100 COOLING STAGE SIZE 038 UNITS Lead Circuit Lag Circuit Active Cylinders Percent Capacity Comp 1 Unloader U1 Unloader U2 Comp 2 0 OFF OFF OFF OFF 0 0 1 ON ON ON OFF 2 14 2 ON ON OFF OFF 4 2...

Страница 43: ...rcuit Lag Circuit Active Cylinders Percent Capacity Comp 1 Unloader U1 Unloader U2 Comp 2 0 OFF OFF OFF OFF 0 0 1 ON ON ON OFF 2 20 2 ON ON OFF OFF 4 40 3 ON OFF OFF OFF 6 60 4 ON ON OFF ON 10 80 5 ON...

Страница 44: ...Operation of the circuit blocked by the demand limit function Table 21 Controls Troubleshooting COOLING STAGE SIZE 088 UNITS Lead Circuit Lag Circuit Active Cylinders Percent Capacity Comp 1 Unloader...

Страница 45: ...failure if CR switch is closed when compressor is not supposed to be on If a failure occurs the following are possible causes High Pressure Switch Open The high pressure switch for each compressor is...

Страница 46: ...as follows Code 71 Supply Air Thermistor Failure Code 72 Return Air Thermistor Failure Code 73 Not used Code 74 Not used Code 75 Circuit 1 Saturated Condensing Thermistor Code 76 Circuit 2 Saturated C...

Страница 47: ...eter is shorted or open a failure will occur CODE 85 DEMAND LIMIT POTENTIOMETER P4 FAILURE Used only if demand limit is being used If demand limit is used DIP switch 5 must be in the ON position Two t...

Страница 48: ...and oper ating properly 2 If system has been operating and a malfunction occurs check display for diagnostic codes Use diagnostic chart located on inner panel of access door to control box sec tion of...

Страница 49: ...age reading is dependent on the meter s impedance Readings may vary with different meters PIN TERMINAL VOLTAGE DC 17 5 18 5 20 2 5 22 2 5 24 5 K1 K2 K3 C1 C2 C3 C4 C5 C6 C7 C8 CR1 CR2 CR3 CR4 CR5 CR6...

Страница 50: ...Turn power to OFF position and replace the thermistor connections removed in Step 2 8 Turn power to ON position Table 25 Pin Terminal Connector J1 Voltages Step 9 Thermistor Input Connector Checkout 1...

Страница 51: ...only 10 minutes unless the display button is pressed Table 28 Terminal Strip J5 Connector Resistance Reading LEGEND Step 2 Check the Display LEDs 1 Enter Quick Test mode 2 If 88 is not displayed repla...

Страница 52: ...umper 1 to Motor drives closed if not 3 at motor replace motor Supply Fan Variable Frequency Drive NOTE The VFDs part no TOSVERT130 E3 are specially modified for use on Carrier equipment Some specific...

Страница 53: ...or The factory has programmed the VFD overload func tion to match the factory installed motor motor size and effi ciency If the supply fan motor is changed from the original factory selection the over...

Страница 54: ...SEtP Setup ACC1 60 0 Sec DEC1 60 0 Sec UL 60 0 Hz LL 10 0 Hz Luln 1 P3 20 F P3 0 0 Hz P4 100 F P4 60 Hz tHr1 See Table 32 StC1 0 StL1 110 OLN 1 tYP 5 Gr F Fundamental FH 60 Hz Pt 2 Gr Fb Feedback FbP1...

Страница 55: ...cted to the outside of the unit cabinet by a factory installed tubing section The pressure transducer s low pressure reference point must be field connected to the building pressure pick up field supp...

Страница 56: ...eter Values These settings differ from the Toshiba defaults and are required for Carrier applications NOTE To restore original factory settings change tYP to 6 in SEtup mode SEtP This restores the VFD...

Страница 57: ...variables including up to four user selected variables and any trip history in the memory Refer to the separate VFD Operation Manual for detailed instructions on accessing diagnostic information init...

Страница 58: ...s Motor C Contactor LAT Leaving Air Temperature CB Circuit Breaker LPS Low Pressure Switch CCB Control Circuit Breaker MTR Motor COMP Compressor MV Main Valve CH Crankcase Heater NC Normally Closed CR...

Страница 59: ...59 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown...

Страница 60: ...60 Fig 57 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown cont...

Страница 61: ......

Страница 62: ...ssed in this manual including Unit Familiarization Maintenance Installation Overview Operating Sequence A large selection of product theory and skills programs are available using popular video based...

Страница 63: ...N DISCHARGE AND LIQUID LINE SERVICE VALVES CHECK COMPRESSOR OIL LEVEL SIGHT GLASS AND VERIFY PROPER LEVEL VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR 24 HOURS CHECK VOLTAGE IMBALANCE LINE TO...

Страница 64: ...MPERATURE F DB Dry Bulb RETURN AIR TEMPERATURE F DB F WB Wet Bulb COOLING SUPPLY AIR F PRESSURES GAS INLET PRESSURE IN WG 48 SERIES UNITS ONLY GAS MANIFOLD PRESSURE STAGE NO 1 IN WG STAGE NO 2 IN WG 4...

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