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Carrier 48HC D17 Series, Service And Maintenance Instructions

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Carrier 48HC D17 Series Service And Maintenance Instructions Download Page 84

84

APPENDIX IV. WIRING DIAGRAMS

50HE500891   F

50HE500751   J

C12263

Fig. 84 -- PremierLink

t

System Control Wiring Diagram

48H

C

Summary of Contents for 48HC D17 Series

Page 1: ...equipment Untrained personnel can perform the basic maintenance functions of replacing filters Trained service personnel should perform all other operations When working on air conditioning equipment...

Page 2: ...y water from a pressure washer garden hose or compressed air should never be used to clean a coil The force of the water or air jet will bend the fin edges and increase airside pressure drop CAUTION O...

Page 3: ...S Compressor mounting bolts S Condenser fan blade positioning S Control box cleanliness and wiring condition S Wire terminal tightness S Refrigerant charge level S Evaporator coil cleaning S Evaporat...

Page 4: ...he unit disconnect switch DO NOT reach into the fan section with power still applied to unit WARNING Supply Fan Assembly The supply fan system consists of two forward curved centrifugal blower wheels...

Page 5: ...e pitch type that allows a servicer to implement changes in the fan wheel speed to match as installed ductwork systems The pulley consists of a fixed flange side that faces the motor secured to the mo...

Page 6: ...stage of cooling is required the SAV system will allow the design airflow rate for the unit established 100 During the heating mode the SAV system will allow total design airflow rate 100 operation Du...

Page 7: ...driven motor 1 Turn off all electrical power to the unit Use approved lockout tagout procedures on all electrical power sources 2 Remove cover on motor connection box 3 Disconnect all electrical leads...

Page 8: ...stem typically the motor pulley in these units Do not install a replacement motor pulley with a smaller pitch diameter than provided on the original factory pulley Change fan wheel speed by changing t...

Page 9: ...with TotalineR environmentally sound coil cleaner is essential to extend the life of coils This cleaner is available from Carrier Replacement Components Division as part number P902 0301 for a one ga...

Page 10: ...round tube coils be cleaned as described below Coil cleaning should be part of the unit s regularly scheduled maintenance procedures ensuring a long life for the coil Failure to clean the coils can re...

Page 11: ...ng devices disconnect the supply fan contactor IFC coil then start the compressor and observe the frosting pattern on the face of the evaporator coil A frost pattern should develop uniformly across th...

Page 12: ...o 80 relative humidity RH Desired sensible heat ratio SHR for equipment in this scenario is typically from 0 4 to 0 7 The Humidi MiZer unit will initiate Dehumidification mode when the space temperatu...

Page 13: ...w design with two separate circuits 3 Way Solenoid Valve Hot Gas Bypass Solenoid Valve Relay Reheat Board RHB Evaporator Freeze Protection Thermostat Low Outdoor Temperature Lockout Switch Secondary L...

Page 14: ...VALVE CLOSED VALVE OPEN VALVE 3 WAY VALVE C07122A Fig 16 Normal Cooling Mode Humidi MiZer System CONDENSER COIL HUMIDI MIZER COIL EVAPORATOR COIL COMPRESSOR OUTDOOR AIR INDOOR AIR RH2 x VALVE RH1 x VA...

Page 15: ...COIL HUMIDI MIZER COIL EVAPORATOR COIL COMPRESSOR OUTDOOR AIR INDOOR AIR RH2 x VALVE RH1 x VALVE TXV VALVE CLOSED VALVE OPEN VALVE 3 WAY VALVE C07124A Fig 18 Hot Gas Reheat Mode Reheat 2 Humidi MiZer...

Page 16: ...FPT Freeze Protection Thermostat IFM Indoor Supply Fan motor LSV Liquid Solenoid Valve LTLO Low Temperature Lockout REHEAT Connection Strip REHEAT on CTB Fig 20 Inputs Modes Outputs Summary Y1 Y2 W1 G...

Page 17: ...DV Valve Operation No 24V signal to input terminals Check using Cool Reheat1 Valve Test Service Test HMZR CRC using ComfortLink Scrolling Marquee Check CRC Relay Operation Check Wiring Check transform...

Page 18: ...b which increases the pressure on the topside of the diaphragm pushing the carrier away from the seat opening the valve and increasing the flow of refrigerant The increased refrigerant flow causes inc...

Page 19: ...restore power to unit 16 Complete charging procedure Refrigerant System Pressure Access Ports There are two access ports in the system on the suction tube near the compressor and on the discharge tube...

Page 20: ...stem in the discharge line when breaking refrigerant system vacuum while the compressor is OFF Only add refrigerant liquid into the suction line while the compressor is operating If adding refrigerant...

Page 21: ...be If suction temperature is high add refrigerant If suction temperature is low carefully recover some of the charge Recheck the suction pressure as charge is adjusted Select the appropriate unit char...

Page 22: ...F 35 0C 85F 29 4C 75F 23 9C 65F 18 3C 55F 12 8C 45F 7 2C C12227 Fig 25 Cooling Charging Chart 15 Ton Circuit A F 35 40 45 50 55 60 65 70 75 80 85 90 95 100 C 1 7 4 4 7 2 10 0 12 8 15 6 18 3 21 1 23 9...

Page 23: ...35 0C 85F 29 4C 75F 23 9C 65F 18 3C 55F 12 8C 45F 7 2C C12229 Fig 27 Cooling Charging Chart 17 5 Ton Circuit A F 35 40 45 50 55 60 65 70 75 80 85 90 95 100 C 1 7 4 4 7 2 10 0 12 8 15 6 18 3 21 1 23 9...

Page 24: ...F 35 0C 85F 29 4C 75F 23 9C 65F 18 3C 55F 12 8C 45F 7 2C C12231 Fig 29 Cooling Charging Chart 20 Ton Circuit A F 45 50 55 60 65 70 75 80 85 90 95 100 C 7 2 10 5 12 8 15 6 18 3 21 1 23 9 26 7 29 4 32 2...

Page 25: ...F 35 0C 85F 29 4C 75F 23 9C 65F 18 3C 55F 12 8C 45F 7 2C C12233 Fig 31 Cooling Charging Chart 25 Ton Circuit A F 35 40 45 50 55 60 65 70 75 80 85 90 C 1 6 4 4 7 2 10 12 8 15 6 18 3 21 1 23 9 26 7 29 4...

Page 26: ...I Standard 700 Replacing the Compressor The compressor using Puron refrigerant contains a POE oil This oil has a high affinity for moisture Do not remove the compressor s tube plugs until ready to ins...

Page 27: ...eplace the Filter Drier 1 Using Puron R410 gauge set recover all refrigerant from system 2 Use tubing cutter to remove filter drier from line NOTE Do Not use a torch to remove old filter drier The hea...

Page 28: ...Replace air filter Unit undersized for load Decrease load or replace with larger unit Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Leaking valves in...

Page 29: ...PANEL C08128 Fig 34 Convenience Outlet Location Unit Powered Type A unit mounted transformer is factory installed to stepdown the main power supply voltage to the unit to 115VAC at the duplex recepta...

Page 30: ...includes the hinged cover a backing plate and gasket ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Before performing service or maintenance opera...

Page 31: ...sure between the two tubes pulls the sampled air through the sensing chamber When a sufficient amount of smoke is detected in the sensing chamber the sensor signals an alarm state and the controller a...

Page 32: ...he sampling tube be connected See installation steps FIOP Smoke Detector Wiring and Response All units The FIOP smoke detector is configured to automatically shut down all unit operations when a smoke...

Page 33: ...R Operating Position Shown SCREWS 2 SAMPLE TUBE CONTROLLER MODULE C12050 Fig 41 Return Air Sampling Tube Location in Unit with Economizer B D F E A C 48TM502525 D C12559 Fig 42 Typical Smoke Detector...

Page 34: ...roller s ability to initiate a dirty sensor test and indicate its results OPERATIONAL TEST NOTICE Failure to follow this NOTICE can result in an unnecessary evacuation of the facility Pressing the con...

Page 35: ...2 Verify that the test reset station s Alarm LED turns on 3 Reset the sensor by turning the key switch to the RESET TEST position for two seconds 4 Verify that the test reset station s Alarm LED turn...

Page 36: ...f Alarm State The smoke detector enters the alarm state when the amount of smoke particulate in the sensor s sensing chamber exceeds the alarm threshold value See Table 5 Upon entering the alarm state...

Page 37: ...ed 2 Check the sensor s cover If it is loose or missing se cure the cover to the sensor housing 3 Replace sensor assembly Sensor s Power LED is Off 1 Check the controller s Power LED If it is off de t...

Page 38: ...set requires a manual reset at the overload switch This device designated IFCB is located on the side of the supply fan housing behind the fan access panel The Must Hold and Must Trip values are liste...

Page 39: ...gatort and Scrolling Marquee are not suitable for use with the latest PremierLink controller Version 2 x The PremierLink control is factory mounted in the 48HC unit s main control box to the left of t...

Page 40: ...rs are only field installable The RTU OPEN controller may also require connection to a building network system or building zoning system All field control wiring that connects to the RTU OPEN must be...

Page 41: ...IN Board Power 24 VAC Input_8 Enthalpy AO 1 ECON Gnd OAT Gnd SAT Configurable Input_8 24 VAC Configurable Input_5 24 VAC Configurable Input_3 24 VAC Input_9 Humidistat 24 VAC BACnet Modbus or N2 LON...

Page 42: ...nifold pressure is factory adjusted for NG fuel use Adjust as required to obtain best flame characteristic See Table 8 Table 8 Natural Gas Manifold Pressure Ranges UNIT MODEL UNIT SIZE HIGH FIRE LOW F...

Page 43: ...er section See Fig 53 2 Remove the flue cover to inspect the heat exchanger 3 Clean all surfaces as required using a wire brush Combustion Air Blower Clean periodically to assure proper airflow and he...

Page 44: ...below the indoor fan panel At the beginning of each heating season inspect for deterioration or blockage due to corrosion or other causes Observe the main burner flames and adjust if necessary Flames...

Page 45: ...6 9 To reinstall reverse the procedure outlined above Cleaning and Adjustment 1 Remove burner rack from unit as described in Re moval and Replacement of Gas Train section above 2 Inspect burners if di...

Page 46: ...connection gas valve gas spuds and manifold pipe plug All leaks must be repaired before firing unit Check Unit Operation and Make Necessary Adjustments NOTE Gas supply pressure at gas valve inlet mus...

Page 47: ...rror code descriptions IMPORTANT Refer to Troubleshooting Tables 16 and 17 for additional information Table 11 LED Error Code Description LED INDICATION ERROR CODE DESCRIPTION ON Normal Operation OFF...

Page 48: ...LH32RF102 0 1015 39 LH32RF103 0 0995 40 LH32RF098 0 0980 41 LH32RF096 0 0960 42 LH32RF094 0 0935 43 LH32RF089 0 0890 44 LH32RF086 0 0860 45 LH32RF082 0 0820 46 LH32RF080 0 0810 47 LH32RF079 0 0785 48...

Page 49: ...peed sensor gas section analog input J1 1 3 FS T1 Flame sensor gas section switch input W Heat stage 1 LCTB 24 VAC J2 2 RS Rollout switch gas section switch input J2 5 6 LS Limit switch fan section sw...

Page 50: ...272 000 9000 2743 513 140 800 513 198 400 513 256 000 10000 3048 524 132 000 524 186 000 524 240 000 11000 3353 524 123 200 524 173 600 524 224 000 12000 3658 534 114 400 534 161 200 534 208 000 13000...

Page 51: ...replace filter as necessary Gas input to unit too low Check gas pressure at manifold Clock gas meter for input If too low increase manifold pressure or replace with correct orifices Unit undersized fo...

Page 52: ...es Check igniter and flame sensor electrode spacing gaps etc Check flame sense and igniter wiring Check gas valve operation and gas supply 6 Flashes Induced Draft Motor Fault If heat off no gas heatin...

Page 53: ...er actuators ECONOMI ER IV CONTROLLER OUTSIDE AIR TEMPERATURE SENSOR LOW AMBIENT SENSOR ACTUATOR WIRING HARNESS C06021 Fig 63 EconoMi er IV Component Locations ECONOMI ER2 PLUG BAROMETRIC RELIEF DAMPE...

Page 54: ...nimum position Closed On Off On Off Off Off Off Off Low Free Cooling LED On High On On On Off Modulating between min position and full open Modulating between closed and full open On Off Off Off Off O...

Page 55: ...stor located at the inlet of the indoor fan See Fig 68 This sensor is factory installed The operating range of temperature measurement is 0 to 158_F 18_ to 70_C See Table 68 for sensor temperature res...

Page 56: ...T mA D C B A C06035 Fig 70 Outside Air Temperature Changeover Setpoints 0 5 10 15 20 25 30 0 13 0 20 0 22 0 25 0 30 0 35 0 40 0 45 0 50 STATIC PRESSURE in wg FLOW IN CUBIC FEET PER MINUTE cfm C06031 F...

Page 57: ...thalpy to the return air enthalpy to determine EconoMi er IV use The controller selects the lower enthalpy air return or outdoor for cooling For example when the outdoor air has a lower enthalpy than...

Page 58: ...ired by local codes to enter the building Make minimum position adjustments with at least 10_F temperature difference between the outdoor and return air temperatures To determine the minimum position...

Page 59: ...15 cfm per person Use Fig 75 to determine the maximum setting of the CO2 sensor For example an 1100 ppm setpoint relates to a 15 cfm per person design Use the 1100 ppm curve on Fig 75 to find the poin...

Page 60: ...eparation procedure has been performed 2 Set the enthalpy potentiometer to A fully CCW The Free Cool LED should be lit 3 Set the enthalpy potentiometer to D fully CW The Free Cool LED should turn off...

Page 61: ...er IV to operation No troubleshooting or testing is done by performing the following procedure 1 Disconnect power at TR and TR1 2 Set enthalpy potentiometer to previous setting 3 Set DCV maximum posit...

Page 62: ...rts or disconnected wires etc b Inspect for oil at all refrigerant tubing connec tions and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refri gerant tubing connectio...

Page 63: ...ompressor Rotation On 3 phase units with scroll compressors it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the prope...

Page 64: ...To restore the original default value reset the power to the unit To shut off unit set system selector switch at OFF position Resetting heating selector lever below room temperature will temporarily...

Page 65: ...VALUES Table 20 Torque Values Supply fan motor mounting 120 in lbs 13 6 Nm 12 in lbs 1 4Nm Supply fan motor adjustment plate 120 in lbs 13 6 Nm 12 in lbs 1 4Nm Motor pulley setscrew 72 in lbs 8 1 Nm...

Page 66: ...RA SA Smoke Detector W7212 EconoMi er IV Non Fault Detection E CO2 Sensor and Diagnostic F RA Smoke Detector CO2 1 PremierLink Controller G SA Smoke Detector CO2 2 RTU Open Multi Protocol Controller H...

Page 67: ...terial Cu Al Cu Al Cu Al Cu Al Tube Diameter 3 8 in RTPF 3 8 in RTPF 3 8 in RTPF 3 8 in RTPF Rows FPI 1 17 1 17 1 17 1 17 Total face area ft2 22 22 26 26 Evap fan and motor VERTICAL Standard Static Mo...

Page 68: ...e 1 Belt 1 Belt 1 Belt 1 Belt Max BHP 4 9 6 5 8 7 8 7 RPM range 746 912 882 1078 941 1176 827 1010 Motor frame size 56 184T 213T 213T Fan Qty Type 2 Centrifugal 2 Centrifugal 2 Centrifugal 2 Centrifug...

Page 69: ...ens closes 195 115 195 115 195 115 195 115 Temperature rise range F 30 60 30 60 30 60 30 60 of stages of burners total 2 10 2 10 2 10 2 10 HIGH Connection size 3 4 in NPT 3 4 in NPT 3 4 in NPT 3 4 in...

Page 70: ...and Drive 826 1009 RPM Max BHP 4 9 Outside operating range Boldface Field supplied Drive TABLE 24 48HC D20 VERTICAL SUPPLY RETURN 17 5 TON CFM Available External Static Pressure in wg 0 2 0 4 0 6 0 8...

Page 71: ...PM Max BHP 4 9 Medium Static Motor and Drive 835 1021 RPM Max BHP 6 5 High Static Motor and Drive 941 1176 RPM Max BHP 8 7 Outside operating range Boldface Field supplied Drive TABLE 26 48HC D28 VERTI...

Page 72: ...3 3 High Static Motor and Drive 746 912 RPM Max BHP 4 9 Outside operating range Boldface Field supplied Drive TABLE 28 48HC D20 HORIZONTAL SUPPLY RETURN 17 5 TON CFM Available External Static Pressure...

Page 73: ...Drive 835 1021 RPM Max BHP 6 5 High Static Motor and Drive 941 1176 RPM Max BHP 8 7 Outside operating range Boldface Field supplied Drive TABLE 30 48HC D28 HORIZONTAL SUPPLY RETURN 25 TON CFM Availabl...

Page 74: ...1176 1153 1129 1106 1082 1059 1035 1012 988 965 941 NOTE Do not adjust pulley further than 5 turns open Factory settings TABLE 32 PULLEY ADJUSTMENT HORIZONTAL MODEL SIZE MOTOR DRIVE COMBO Motor Pulle...

Page 75: ...51 J 50HE500889 I 50HE502181 E 50HE502186 B 460 3 60 50HE500751 J 50HE500752 I 50HE502181 E 50HE502183 C 575 3 60 50HE500751 J 50HE500888 I 50HE502181 E 50HE502184 C D28 208 230 3 60 50HE500751 J 50HE...

Page 76: ...76 APPENDIX IV WIRING DIAGRAMS C12615 Fig 76 48HC D17 D28 Control Diagram 208 230 3060 460 575 3 60 48HC...

Page 77: ...77 APPENDIX IV WIRING DIAGRAMS C12616 Fig 77 48HC D17 D28 Power Diagram 208 230 3 60 48HC...

Page 78: ...78 APPENDIX IV WIRING DIAGRAMS C12617 Fig 78 48HC D17 D28 Power Diagram 460 3 60 48HC...

Page 79: ...79 APPENDIX IV WIRING DIAGRAMS C12618 Fig 79 48HC D17 D28 Power Diagram 575 3 60 48HC...

Page 80: ...80 APPENDIX IV WIRING DIAGRAMS C14061 Fig 80 48HC D17 D28 Control Diagram with Humidi MiZer 48HC...

Page 81: ...81 APPENDIX IV WIRING DIAGRAMS C12620 Fig 81 48HC D17 D28 Power Diagram 208 230 3 60 with Humidi MiZer 48HC...

Page 82: ...82 APPENDIX IV WIRING DIAGRAMS C12621 Fig 82 48HC D17 D28 Power Diagram 460 3 60 with Humidi MiZer 48HC...

Page 83: ...83 APPENDIX IV WIRING DIAGRAMS C12622 Fig 83 48HC D17 D28 Power Diagram 575 3 60 with Humidi MiZer 48HC...

Page 84: ...84 APPENDIX IV WIRING DIAGRAMS 50HE500891 F 50HE500751 J C12263 Fig 84 PremierLinkt System Control Wiring Diagram 48HC...

Page 85: ...85 APPENDIX IV WIRING DIAGRAMS C13766 Fig 85 PremierLinkt System Control Wiring Diagram with Humidi MiZer 48HC...

Page 86: ...86 APPENDIX IV WIRING DIAGRAMS C13767 Fig 86 RTU OPEN Wiring Diagram 48HC...

Page 87: ...87 APPENDIX IV WIRING DIAGRAMS C13768 Fig 87 RTU OPEN Wiring Diagram with Humidi MiZer 48HC...

Page 88: ...SENSOR LOCATION C12259 Fig 89 MotorMaster Sensor Locations D28 Copyright 2014 Carrier Corp S 7310 W Morris St S Indianapolis IN 46231 Edition Date 04 14 Manufacturer reserves the right to change at an...

Page 89: ...RE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES OR SHARP METAL EDGES j CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS III START UP REFER TO UNIT SERVICE MAINT...

Page 90: ...p S 7310 W Morris St S Indianapolis IN 46231 Edition Date 04 15 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 48HC...

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