Controls, Start-Up, Operation, Service and ... - Climayoreo

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CONTENTS (cont) Page Smoke Control Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . 74 • FIRE SMOKE INPUTS • AIRFLOW CONTROL DURING THE FIRE/SMOKE MODES • RELEVANT ITEMS Indoor Air Quality Control . . . . . . . . . . . . . . . . . . . . . . . 75 • OPERATION • SETTING UP THE SYSTEM • PRE-OCCUPANCY PURGE • OPTIONAL AIRFLOW STATION Humidification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 • SETTING UP THE SYSTEM • OPERATION • CONFIGURING THE HUMIDIFIER ACTUATOR Dehumidification and Reheat. . . . . . . . . . . . . . . . . . . . 79 • SETTING UP THE SYSTEM • OPERATION Humidi-MiZer ® Adaptive Dehumidification System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 • SETTING UP THE SYSTEM • OPERATION • HUMIDI-MIZER MODES Temperature Compensated Start . . . . . . . . . . . . . . . . 82 • SETTING UP THE SYSTEM • TEMPERATURE COMPENSATED START LOGIC Carrier Comfort Network ® (CCN). . . . . . . . . . . . . . . . . 83 Alert Limit Configuration . . . . . . . . . . . . . . . . . . . . . . . . 83 Sensor Trim Configuration . . . . . . . . . . . . . . . . . . . . . . 85 Discrete Switch Logic Configuration . . . . . . . . . . . . 86 Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 VFD Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Remote Control Switch Input . . . . . . . . . . . . . . . . . . . . 88 Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Space Temperature Offset. . . . . . . . . . . . . . . . . . . . . . . 88 TIME CLOCK CONFIGURATION . . . . . . . . . . . . . . 89,90 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . 90-116 Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . 90 Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . . 90 Service Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Humidi-MiZer ® Troubleshooting . . . . . . . . . . . . . . . . . 90 Thermistor Troubleshooting . . . . . . . . . . . . . . . . . . . . . 91 Transducer Troubleshooting. . . . . . . . . . . . . . . . . . . . . 93 Forcing Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . 93 Run Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 • AUTO VIEW OF RUN STATUS • ECONOMIZER RUN STATUS • COOLING INFORMATION • VFD INFORMATION DISPLAY TABLE • MODE TRIP HELPER • CCN/LINKAGE DISPLAY TABLE • COMPRESSOR RUN HOURS DISPLAY TABLE • COMPRESSOR STARTS DISPLAY TABLE • SOFTWARE VERSION NUMBERS DISPLAY TABLE Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 MAJOR SYSTEM COMPONENTS . . . . . . . . . . . 116-137 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Factory-Installed Components . . . . . . . . . . . . . . . . . 116 Accessory Control Components. . . . . . . . . . . . . . . . 135 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137-164 Service Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Refrigerant Feed Components. . . . . . . . . . . . . . . . . . 143 Thermostatic Expansion Valve (TXV) . . . . . . . . . . . 143 2 Page Refrigeration Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Gas System Adjustment (48P Only) . . . . . . . . . . . . 163 Moisture/Liquid Indicator. . . . . . . . . . . . . . . . . . . . . . . 163 Filter Drier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Liquid Line Service Valves . . . . . . . . . . . . . . . . . . . . . 163 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Control Circuit, 115 V. . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Control Circuit, 24 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Gas Heat (48P Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Compressor Replacement. . . . . . . . . . . . . . . . . . . . . . 164 APPENDIX A — LOCAL DISPLAY TABLES. . 165-175 APPENDIX B — CCN TABLES . . . . . . . . . . . . . . 176-192 APPENDIX C — UNIT STAGING TABLES. . . . 192,193 APPENDIX D — VFD INFORMATION . . . . . . . . 194-203 APPENDIX E — MODE SELECTION PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204,205 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 CONTROLS SET POINT AND CONFIGURATION LOG . . . . . . . . . . . . . . . .CL-1 - CL-7 UNIT START-UP CHECKLIST . . . . . . . . . . . . . . . . . .CL-8 SAFETY CONSIDERATIONS Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning 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, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations. WARNING Before performing service or maintenance operation on unit turn off and lock off main power switch to unit. Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation and service. The unit may have an internal non-fused disconnect or a field-installed disconnect. CAUTION This unit uses a microprocessor-based electronic control system. Do not use jumpers or other tools to short out components or to bypass or otherwise depart from recommended procedures. Any short-to-ground of the control board or accompanying wiring may destroy the electronic modules or electrical components. WARNING 1. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Refer to the User’s Information Manual provided with this unit for more details. 2. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
WARNING What to do if you smell gas: 1. DO NOT try to light any appliance. 2. DO NOT touch any electrical switch, or use any phone in your building. 3. IMMEDIATELY call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. 4. If you cannot reach your gas supplier call the fire department. GENERAL This book contains Start-Up, Controls, Operation, Troubleshooting and Service information for the 48/50P Series rooftop units. See Table 1. These units are equipped with ComfortLink controls version 2.X or higher. Use this guide in conjunction with the separate installation instructions packaged with the unit. Refer to the Wiring Diagrams literature for more detailed wiring information. The 48/50P Series units provide ventilation, cooling, and heating (when equipped) in variable air volume (VAV) and constant volume (CV) applications. Table 1 — P Series Product Line UNIT SIZE APPLICATION 48P2 All Gas Heat, Vertical Supply/Return CV ComfortLink Controls 48P3 All Gas Heat, Vertical Supply/Return VAV ComfortLink Controls 48P4 All Gas Heat, Horizontal Supply/Return CV ComfortLink Controls 48P5 All Gas Heat, Horizontal Supply/Return VAV ComfortLink Controls Optional Electric Heat 50P2 All Vertical Supply/Return CV ComfortLink Controls Optional Electric Heat 50P3 All Vertical Supply/Return VAV ComfortLink Controls Optional Electric Heat 50P4 All Horizontal Supply/Return CV ComfortLink Controls Optional Electric Heat 50P5 All Horizontal Supply/Return VAV ComfortLink Controls LEGEND The 48/50P units contain the factory-installed ComfortLink control system which provides full system management. The main base board (MBB) stores hundreds of unit configuration settings and 8 time of day schedules. The MBB also performs self diagnostic tests at unit start-up, monitors the operation of the unit, and provides alarms and alert information. The system also contains other optional boards that are connected to the MBB through the Local Equipment Network (LEN). Information on system operation and status are sent to the MBB processor by various sensors and optional board that are located at the unit and in the conditioned space. Access to the unit controls for configuration, set point selection, schedule creation, and service can be done through a unit-mounted scrolling marquee. Access can also be done through the Carrier Comfort Network ® CV — Constant Volume VAV — Variable Air Volume using ComfortVIEW software, Network Service Tool, or the accessory Navigator device. The ComfortLink system controls all aspects of the rooftop. It controls the supply-fan motor, compressors, and economizers to maintain the proper temperature conditions. The controls also cycle condenser fans to maintain suitable head pressure. All VAV units are equipped with a VFD (variable frequency drive) for supply duct pressure control. The ComfortLink 3 controls can directly control the speed of the VFD based on a static pressure sensor input. In addition the ComfortLink controls can adjust (but not control on CV and non-modulating power exhaust units) the building pressure using multiple power exhaust fans controlled from damper position or from a building pressure sensor. The control safeties are continuously monitored to prevent the unit from operating under abnormal conditions. Sensors include pressure transducers and thermistors. A scheduling function, programmed by the user, controls the unit occupied/unoccupied schedule. Up to 8 different schedules can be programmed. The controls also allow the service person to operate a service test so that all the controlled components can be checked for proper operation. Conventions Used in This Manual — This manual will use the following conventions for discussing configuration points for the local display (scrolling marquee or Navigator accessory). Parameter names will be written with the Mode name first, then any submodes, then the parameter name, each separated by an arrow symbol (). Names will also be shown in bold and italics. As an example, the IAQ Economizer Override Position which is located in the Configuration mode, Indoor Air Quality Configuration sub-mode, and the Air Quality Set Points sub-sub-mode, would be written as Configuration IAQIAQ.SPIQ.O.P. This path name will show the user how to navigate through the local display structure to reach the desired configuration. The user would scroll through the modes and submodes using the UP ARROW and DOWN ARROW keys. The arrow symbol in the path name represents pressing ENTER to move into the next level of the menu structure. When a value is included as part of the path name, it will be shown at the end of the path name after an equals sign. If the value represents a configuration setting, an explanation will be shown in parenthesis after the value. As an example, ConfigurationIAQAQ.CFIQ.AC = 1 (IAQ Analog Input). Pressing the ESCAPE and ENTER keys simultaneously will scroll an expanded text description of the parameter name across the display. The expanded description is shown in the local display tables but will not be shown with the path names in text. The CCN (Carrier Comfort Network ® ) point names are also cross-referenced in the local display tables (Appendix A) for users configuring the unit with CCN software instead of the local display. The CCN tables are located in Appendix B of this manual. BASIC CONTROL USAGE ComfortLink Controls — The ComfortLink controls are a comprehensive unit-management system. The control system is easy to access, configure, diagnose and troubleshoot. The controls are flexible, providing constant volume and variable air volume cooling control sequences, and heating control sequences for two-stage electric and gas systems, multiple-stage gas heating, and hydronic heat in both Occupied and Unoccupied schedule modes. This control also manages: • VAV duct pressure (through optional VFD), with configurable static pressure reset • Building pressure through four different power exhaust schemes • Return fan applications using fan tracking • Condenser fan head pressure control • Dehumidification (with optional reheat) and humidifier sequences
Page 1: Controls, Start-Up, Operation, Serv
Page 5 and 6: and the ENTER keys until the desire
Page 7 and 8: START-UP IMPORTANT: Do not attempt
Page 9 and 10: Table 4 — Fan Performance — 48P
Page 15 and 16: AIRFLOW (cfm) Table 10 — Fan Perf
Page 23 and 24: AIRFLOW (Cfm) LEGEND Table 18 — F
Page 29 and 30: AIRFLOW (cfm) LEGEND Bhp — Brake
Page 31 and 32: HIGH-EFFICIENCY MOTORS Nominal Maxi
Page 33 and 34: 2. Under the Setpoints menu, set th
Page 35 and 36: would use Period 2 and set days Sat
Page 37 and 38: there is a loss of communication be
Page 39 and 40: and when ON, the control sets a cap
Page 41 and 42: System Mode Test — When the syste
Page 43 and 44: Table 31 — Unit Configuration ITE
Page 45 and 46: SETTING UP THE SYSTEM Machine Contr
Page 47 and 48: High SST Alert Delay Time (H.SST)
Page 49 and 50: Table 36 — Cool/Heat Set Point Of
Page 51 and 52: Table 38 — Run Status Cool Displa
Page 53 and 54:
To use Demand Limiting, select the
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Size 050, 055, 060 Contactor OFM(s)
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Whenever the outdoor ambient temper
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Demand Level Low Heat Off Offset (L
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Limit Switch Low Temp (SW.L.T) —
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STAGE Table 49 — IGC LED Indicato
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Table 50 — Static Pressure Contro
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Table 53 — Dirty Filter Switch Po
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NOTE: If the user wishes to disable
Page 71 and 72:
the economizer modulates when attem
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P = K * BP.P * (error) I = K * BP.I
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its smoke. Closing the economizer (
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Table 57 — Indoor Air Quality Con
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Table 58 — Humidity Configuration
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The default sensor is the return ai
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TEMPERATURE COMPENSATED START LOGIC
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Sensor Trim Configuration — The T
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SUPPLY FAN VFD CONFIGURATION — Th
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REMOTE SWITCH LOGIC CONFIGURATION (
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Alarms and Alarm History for for an
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Transducer Troubleshooting — The
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Table 75 — 10K Thermistor vs Resi
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TEMP RESISTANCE (F) (Ohms) -25 98,0
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PRESSURE (PSIG) Table 80 — Suctio
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Table 81 — Discharge Pressure Tra
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Table 82 — Auto View of Run Statu
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Table 84 — Cooling Information Di
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equalize compressor oil levels. If
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Table 91 — Alert and Alarm Codes
Page 111 and 112:
T072 (Evaporator Discharge Reset Se
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This alarm will disable mechanical
Page 115 and 116:
This is the reverse of the Pressuri
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117 a48-8408 Fig. 19 — Typical Po
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OD ENTHALPY SWITCH LOW REMOTE OCCUP
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Fig. 23 — Typical Electric Heat U
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123 Fig. 25 — Typical Gas Heat Se
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125 Fig. 27 — Component Arrangeme
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ACCSY — Accessory ACC’Y — Acc
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Table 93 — Rooftop Control Board
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Table 96 — Control Expansion Modu
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LEGEND IAQ — Indoor Air Quality V
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the motor position to be configured
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TIME EWT LWT SETP Run Status Servic
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Fig. 37 — Door Latch Fig. 38 —
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SUPPLY FAN AND POWER EXHAUST MOTOR
Page 143 and 144:
Routine cleaning of coil surfaces i
Page 145 and 146:
Saturated Discharge Temperature (de
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Gas System Adjustment (48P Only) GA
Page 165 and 166:
APPENDIX A — LOCAL DISPLAY TABLES
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
APPENDIX B — CCN TABLES (cont) ST
Page 179 and 180:
APPENDIX B — CCN TABLES (cont) ST
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APPENDIX B — CCN TABLES (cont) SE
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
APPENDIX B — CCN TABLES (cont) MA
Page 189 and 190:
APPENDIX B — CCN TABLES (cont) MA
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TESTACTC TESTCOOL TESTFANS TESTHEAT
Page 193 and 194:
APPENDIX C — UNIT STAGING TABLES
Page 195 and 196:
* 41 for Supply Fan Motor VFD, 42 f
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Fig. B — VFD Keypad START UP WITH
Page 199 and 200:
Upload All Parameters — To upload
Page 201 and 202:
To replace the main fan for frame s
Page 203 and 204:
ALARM CODE ALARM NAME IN PANEL 2001
Page 205 and 206:
APPENDIX E — MODE SELECTION PROCE
Page 207 and 208:
CONTROLS SET POINT AND CONFIGURATIO
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
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