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Carrier WEATHERMAKER 48A2020, Controls, Start-Up, Operation, Service And Troubleshooting Instructions

The Carrier WEATHERMAKER 48A2020 comes with a comprehensive User's Information Manual, providing you with all the essential instructions and guidelines needed for optimal usage. Download this manual for free from our website to unlock the full potential of your unit and ensure a seamless user experience.

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480239-01

Printed in U.S.A.

Form 48/50A-14T

Pg 1 

5-19

Replaces: 48/50A-13T

Controls, Start-Up, Operation,

Service and Troubleshooting

SAFETY CONSIDERATIONS   . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Conventions Used in This Manual . . . . . . . . . . . . . . . 3
BASIC CONTROL USAGE   . . . . . . . . . . . . . . . . . . . . . 4
ComfortLink Controls  . . . . . . . . . . . . . . . . . . . . . . . . . 4
Scrolling Marquee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessory Navigator™ Display  . . . . . . . . . . . . . . . . . 4
Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CCN Tables and Display  . . . . . . . . . . . . . . . . . . . . . . . 5
START-UP   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Preparation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Setup   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Internal Wiring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Accessory Installation   . . . . . . . . . . . . . . . . . . . . . . . . 7
Crankcase Heaters   . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Evaporator Fan   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Controls  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CONTROLS QUICK START   . . . . . . . . . . . . . . . . . . . 21
VAV Units Using Return Air Sensor or Space 

Temperature Sensor  . . . . . . . . . . . . . . . . . . . . . . . 21

Multi-Stage Constant Volume (CV) Units with 

Mechanical Thermostat   . . . . . . . . . . . . . . . . . . . . 21

Multi-Stage Constant Volume Units with Space 

Sensor  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Economizer Options  . . . . . . . . . . . . . . . . . . . . . . . . . 22
Indoor Air Quality (IAQ) Options  . . . . . . . . . . . . . . . 22
Exhaust Options  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Programming Operating Schedules   . . . . . . . . . . . . 22
SERVICE TEST   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service Test Mode Logic   . . . . . . . . . . . . . . . . . . . . . 24
Independent Outputs   . . . . . . . . . . . . . . . . . . . . . . . . 24
Fans in Service Test Mode  . . . . . . . . . . . . . . . . . . . . 24
Cooling in Service Test Mode   . . . . . . . . . . . . . . . . . 24
Heating in Service Test Mode   . . . . . . . . . . . . . . . . . 24
Humidi-MiZer® System . . . . . . . . . . . . . . . . . . . . . . . 24
THIRD PARTY CONTROL  . . . . . . . . . . . . . . . . . . . . . 25
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alarm Output  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Remote Switch   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VFD Control  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Supply Air Reset  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Demand Limit Control . . . . . . . . . . . . . . . . . . . . . . . . 26
Demand Controlled Ventilation Control   . . . . . . . . . 26
CONTROLS OPERATION  . . . . . . . . . . . . . . . . . . . . . 27
Modes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Unit Configuration Submenu  . . . . . . . . . . . . . . . . . . 31

Cooling Control  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Heating Control   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Static Pressure Control  . . . . . . . . . . . . . . . . . . . . . . .56
Fan Status Monitoring  . . . . . . . . . . . . . . . . . . . . . . . .60
Dirty Filter Switch   . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Building Pressure Control   . . . . . . . . . . . . . . . . . . . .66
Smoke Control Modes  . . . . . . . . . . . . . . . . . . . . . . . .68
Indoor Air Quality Control . . . . . . . . . . . . . . . . . . . . .69
Dehumidification and Reheat  . . . . . . . . . . . . . . . . . .73
Humidi-MiZer Adaptive Dehumidification System  . . .75
Temperature Compensated Start  . . . . . . . . . . . . . . .76
Carrier Comfort Network (CCN) System   . . . . . . . . .77
Alert Limit Configuration . . . . . . . . . . . . . . . . . . . . . .78
Sensor Trim Configuration  . . . . . . . . . . . . . . . . . . . .79
Discrete Switch Logic Configuration  . . . . . . . . . . . .79
Display Configuration  . . . . . . . . . . . . . . . . . . . . . . . .80
Remote Control Switch Input  . . . . . . . . . . . . . . . . . .80
Hot Gas Bypass  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Space Temperature Offset   . . . . . . . . . . . . . . . . . . . .81
TIME CLOCK CONFIGURATION  . . . . . . . . . . . . . . . .82
Hour and Minute (HH.MM)  . . . . . . . . . . . . . . . . . . . . .82
Month of Year (MNTH)  . . . . . . . . . . . . . . . . . . . . . . . .82
Day of Month (DOM)   . . . . . . . . . . . . . . . . . . . . . . . . .82
Day of Week (DAY) . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Year (YEAR)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Local Time Schedule (SCH.L)  . . . . . . . . . . . . . . . . . .82
Local Holiday Schedules (HOL.L)   . . . . . . . . . . . . . .83
Daylight Savings Time (DAY.S)   . . . . . . . . . . . . . . . .83
TROUBLESHOOTING   . . . . . . . . . . . . . . . . . . . . . . . .83
Complete Unit Stoppage  . . . . . . . . . . . . . . . . . . . . . .83
Single Circuit Stoppage   . . . . . . . . . . . . . . . . . . . . . .83
Service Analysis   . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Restart Procedure  . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Humidi-MiZer Troubleshooting . . . . . . . . . . . . . . . . .84
Thermistor Troubleshooting . . . . . . . . . . . . . . . . . . .84
Transducer Troubleshooting   . . . . . . . . . . . . . . . . . .84
Forcing Inputs and Outputs  . . . . . . . . . . . . . . . . . . .98
Run Status Menu  . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Alarms and Alerts   . . . . . . . . . . . . . . . . . . . . . . . . . .101
MAJOR SYSTEM COMPONENTS  . . . . . . . . . . . . . .110
General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Factory-Installed Components  . . . . . . . . . . . . . . . .111
Accessory Control Components   . . . . . . . . . . . . . .134
SERVICE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Service Access   . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Cleaning  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

WeatherMaker

®

48/50A020-060

Single Package Large Rooftop Units

with 

Comfort

Link Version 10.x Controls

Summary of Contents for WEATHERMAKER 48A2020

Page 1: ...ir Reset 26 Demand Limit Control 26 Demand Controlled Ventilation Control 26 CONTROLS OPERATION 27 Modes 27 Unit Configuration Submenu 31 Cooling Control 33 Heating Control 50 Static Pressure Control 56 Fan Status Monitoring 60 Dirty Filter Switch 60 Economizer 60 Building Pressure Control 66 Smoke Control Modes 68 Indoor Air Quality Control 69 Dehumidification and Reheat 73 Humidi MiZer Adaptive ...

Page 2: ...ore performing service or maintenance operation on unit turn off and lock off main power switch to unit Electri cal 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 Note that the unit may also be equipped with a convenience outlet that this outlet is wire...

Page 3: ...esso ry will be used in this manual Point names will be written with the Mode name first then any sub modes then the point 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 In door Air Quality Configuration sub mode and the Air Quality Setpoints sub sub mode would be writ...

Page 4: ... is easy to access through the use of a unit mounted display module There is no need to bring a separate computer to this unit for start up Access to control menus is simplified by the ability to quickly select from 11 menus A scrolling readout provides detailed explanations of control information Only four large easy to use buttons are required to maneuver through the entire controls menu For add...

Page 5: ...e will be displayed with a blinking f following its value For exam ple if supply fan requested FAN F is forced the display shows YESf where the f is blinking to signify a force on the point Remove the force by selecting the point that is forced with the key and then pressing the and arrow keys simultaneously Depending on the unit model factory installed options and field installed accessories some...

Page 6: ...y Air Setpoint Hi SA HI Supply Air Setpoint Lo SA LO Heating Supply Air Setpoint SA HT Tempering Purge SASP T PRG Tempering in Cool SASP T CL Tempering in Vent Occ SASP T V OC Tempering in Vent Unocc SASP T V UN General Inputs GEN I Compressor Feedback FD BK Thermostat Inputs STAT Fire Smoke Modes FIRE Relative Humidity REL H Air Quality Sensors AIR Q Reset Inputs RSET 4 to 20 Milliamp Inputs 4 20...

Page 7: ...etpoint is required use the scroll ing marquee Navigator accessory or Service Tool soft ware to change the configuration valves 3 If the internal unit schedules are going to be used configure the Occupancy schedule 4 Verify that the control time periods programmed meet cur rent requirements 5 Using Service Test mode verify operation of all major components 6 If the unit is a VAV unit make sure to ...

Page 8: ...028 8 46 1056 8 82 1083 9 18 1109 9 54 1135 9 91 1160 10 28 1185 10 65 11 000 1004 9 00 1032 9 36 1059 9 73 1086 10 09 1112 10 46 1138 10 84 1163 11 22 1188 11 60 12 000 1039 10 42 1066 10 79 1093 11 16 1119 11 53 1144 11 91 1169 12 30 1193 12 68 12 500 1058 11 20 1085 11 57 1110 11 94 1136 12 32 1161 12 70 1185 13 09 13 000 1077 12 03 1103 12 40 1129 12 77 1154 13 15 1178 13 54 AIRFLOW CFM AVAILA...

Page 9: ...1160 13 44 1185 13 89 1209 14 34 1233 14 79 1256 15 24 1279 15 69 13 000 1152 14 38 1176 14 84 1200 15 31 1224 15 77 1248 16 24 1271 16 70 1293 17 17 14 000 1196 16 41 1220 16 88 1243 17 36 1266 17 84 1288 18 32 15 000 1243 18 63 1265 19 12 1287 19 61 16 000 1290 21 06 17 000 17 500 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp...

Page 10: ...000 1166 21 78 1188 22 40 1210 23 01 1232 23 64 1253 24 26 1275 24 89 1296 25 52 17 000 1208 24 56 1229 25 20 1250 25 84 1271 26 48 1291 27 12 18 000 1250 27 59 1271 28 25 1291 28 91 19 000 1294 30 87 20 000 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 12 000 476 4 33 534...

Page 11: ...9 1015 8 27 1043 8 55 1070 8 84 1096 9 12 1122 9 41 1147 9 69 1171 9 98 1195 10 26 12 000 989 8 97 1016 9 26 1043 9 55 1070 9 85 1096 10 14 1121 10 44 1146 10 73 1171 11 03 1195 11 33 12 500 1005 9 66 1032 9 95 1058 10 25 1084 10 55 1110 10 85 1135 11 15 1159 11 45 1183 11 75 13 000 1021 10 39 1048 10 69 1074 10 99 1099 11 29 1124 11 59 1149 11 90 1173 12 20 1197 12 51 AIRFLOW CFM AVAILABLE EXTERN...

Page 12: ...1265 13 74 1287 14 08 14 000 1137 12 98 1161 13 34 1184 13 69 1208 14 05 1231 14 41 1253 14 76 1276 15 12 1298 15 47 15 000 1178 14 77 1201 15 15 1223 15 51 1246 15 88 1268 16 25 1289 16 62 16 000 1221 16 73 1243 17 11 1264 17 50 1286 17 88 17 000 1265 18 85 1286 19 25 17 500 1287 19 98 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm...

Page 13: ... 37 1255 25 99 1275 26 61 1295 27 23 18 000 1190 25 70 1210 26 34 1230 26 97 1250 27 61 1270 28 25 1290 28 89 19 000 1230 28 73 1250 29 38 1269 30 04 1289 30 70 20 000 1271 31 99 1290 32 67 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 12 000 450 4 02 509 4 71 560 5 41 605...

Page 14: ... 1146 10 69 1171 11 12 1195 11 56 10 000 993 8 96 1021 9 38 1048 9 80 1075 10 23 1101 10 67 1126 11 11 1151 11 55 1176 12 00 1200 12 45 11 000 1031 10 37 1058 10 80 1084 11 23 1110 11 67 1135 12 12 1160 12 56 1184 13 02 12 000 1071 11 97 1097 12 41 1123 12 85 1148 13 30 1172 13 75 1196 14 21 12 500 1092 12 85 1118 13 29 1143 13 74 1167 14 19 1191 14 64 13 000 1113 13 78 1139 14 22 1163 14 67 AIRFL...

Page 15: ...2 59 1196 13 02 1220 13 45 1243 13 87 1266 14 30 1289 14 72 12 000 1138 13 05 1163 13 50 1188 13 95 1212 14 40 1236 14 84 1259 15 30 1282 15 74 13 000 1184 14 99 1208 15 45 1232 15 92 1255 16 39 1278 16 85 14 000 1232 17 13 1255 17 61 1278 18 09 15 000 1282 19 48 16 000 17 000 17 500 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bh...

Page 16: ...8 1171 18 97 1195 19 55 1218 20 15 1241 20 75 1263 21 35 1285 21 96 15 000 1166 20 27 1189 20 88 1211 21 49 1234 22 09 1256 22 71 1277 23 32 1299 23 94 16 000 1210 23 00 1231 23 62 1253 24 25 1274 24 88 1295 25 51 17 000 1255 25 99 1276 26 63 1296 27 27 18 000 19 000 20 000 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp ...

Page 17: ...02 1165 10 37 1189 10 72 11 000 987 8 89 1015 9 24 1042 9 59 1068 9 94 1094 10 29 1119 10 65 1144 11 01 1168 11 36 1191 11 72 12 000 1022 10 31 1048 10 67 1075 11 03 1100 11 39 1125 11 75 1150 12 12 1173 12 48 1197 12 85 12 500 1039 11 08 1066 11 44 1092 11 81 1117 12 17 1141 12 54 1165 12 91 1189 13 28 13 000 1058 11 90 1084 12 26 1109 12 63 1134 13 00 1158 13 37 1182 13 75 AIRFLOW CFM AVAILABLE ...

Page 18: ... 1236 12 18 1259 12 49 1281 12 80 13 000 1133 11 83 1157 12 17 1181 12 51 1205 12 85 1228 13 19 1251 13 52 1273 13 86 1295 14 19 14 000 1176 13 56 1199 13 92 1222 14 28 1245 14 63 1268 14 99 1290 15 34 15 000 1220 15 45 1243 15 83 1265 16 20 1287 16 58 16 000 1265 17 52 1287 17 91 17 000 17 500 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm...

Page 19: ...5 16 000 1156 21 52 1178 22 11 1199 22 71 1220 23 31 1241 23 91 1262 24 51 1282 25 12 17 000 1198 24 28 1218 24 90 1239 25 52 1259 26 14 1279 26 76 1299 27 38 18 000 1240 27 29 1260 27 93 1280 28 57 1300 29 21 19 000 1284 30 55 20 000 AIRFLOW Cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp ...

Page 20: ... 80 15 0 12 0 9 600 91 7 15 11 19 15 3 11 41 46 0 12 273 91 7 18 0 13 43 22 0 19 0 14 439 93 0 20 14 92 22 4 16 71 59 0 17 853 93 0 23 4 17 46 28 7 23 0 18 650 93 6 25 18 65 28 9 21 56 73 0 23 034 93 6 29 4 21 93 36 3 28 4 23 432 93 6 30 22 38 35 6 26 56 82 6 28 374 93 6 34 7 25 89 41 7 36 3 27 656 93 6 40 29 84 42 0 31 33 110 0 55 0 43 8 33 156 94 5 Bhp Brake Horsepower BkW Brake Kilowatts UNIT S...

Page 21: ...ction on page 22 for additional exhaust option configurations Multi Stage Constant Volume Units with Space Sensor To configure the unit perform the following 1 Under Configuration UNIT C TYP set C TYP to 5 SPT MULTI 2 Install jumpers or 6 SPT MULTI2 between R W2 and W2 W1 on TB4 in the control box 3 Under the Setpoints menu the following configurations should be set 4 The degrees of demand from th...

Page 22: ...pted SCH N has a range of 0 to 99 The default value is 1 A value of 0 is always occupied and the unit will control to its occupied setpoints A value of 1 means the unit will follow a local schedule and a value of 65 to 99 means it will follow a CCN schedule Schedules 2 to 64 are not used as the control only supports one internal local schedule If one of the 2 to 64 schedules is configured then the...

Page 23: ... STATUS TEST Service Test Mode ON OFF MAN_CTRL STOP Local Machine Disable YES NO UNITSTOP config S STP Soft Stop Request YES NO SOFTSTOP forcible FAN F Supply Fan Request YES NO SFANFORC forcible F 4 CH 4 in Filter Change Mode YES NO FILT4CHG INDP TEST INDEPENDENT OUTPUTS ECN C Economizer Act Cmd Pos ECONCTST E PWR Economizer Power Test ECONPTST E CAL Calibrate the Economizer ECON_CAL PE A Power E...

Page 24: ...4 Terminal block TB4 is located in the unit control box Store these jumpers in the unit control box for future use Humidi MiZer System In the Humidi MiZer HMZR sub menu it will be possible to control and calibrate the Humidi MiZer modulating valves gas bypass and condenser while the unit s compressors are OFF Calibration is a mode in which the unit software will first over drive each valve in the ...

Page 25: ...if the con denser modulating valve is only 80 open then the gas bypass modulating valve must remain at least 20 open The effect of closing the condenser valve will be to in crease the supply air temperature additional reheat capaci ty To view the actual valve position at any time the user can use the Outputs menu Outputs COOL C EXV Service Test COOL B EXV HMV 2 Bypass EXV Position On Humidi MiZer ...

Page 26: ...ne how the switch will be read A closed switch can indicate ei ther a low IAQ condition or a high IAQ condition This is set at Configuration SW LG and IAQ L The user can set what a low reading would mean based on the type of switch being used Setting IAQ L to OPEN means that when the switch is open the input will read LOW When the switch is closed the input will read HIGH Setting IAQ L to CLSE clo...

Page 27: ...he effective minimum position CONTROLS OPERATION Modes The ComfortLink controls operate under a hierarchy of com mand structure as defined by three essential elements the Sys tem mode the HVAC mode and the Control mode The System mode is the top level mode that defines three essential states for the control system OFF RUN and TEST The HVAC mode is the functional level underneath the System mode wh...

Page 28: ...on a hierarchal decision making process Certain overrides may interfere with this process and the nor mal temperature humidity control operation of the unit The decision making process that determines the HVAC mode is shown in Fig 3 and Appendix D Each HVAC Mode is described below The HVAC mode num ber is shown in parenthesis after the mode HVAC Mode STARTING UP 0 The unit is transitioning from th...

Page 29: ...r ization PRES input which can be found in the INPUT FIRE sub menu HVAC Mode EVACUATION 21 The unit is in the special Fire Evacuation mode where the sup ply fan is off the economizer damper is closed and the power exhaust fans are on This mode is started by the Fire Evacua tion EVAC input which can be found in the INPUT FIRE sub menu HVAC Mode SMOKE PURGE 22 The unit is in the special Fire Purge m...

Page 30: ...2 AND Config UNIT SFS S YES HVAC Mode OFF Fan Status Fail HVAC Mode OFF Starting Up Unit shutting down HVAC Mode Shutting Down Unit control free to select normal heating cooling HVAC mode HVAC Mode OFF HVAC Mode Tempering Vent HVAC Mode Tempering LoCool HVAC Mode Tempering HiCool HVAC Mode Vent HVAC Mode Low Cool HVAC Mode High Cool HVAC Mode Low Heat HVAC Mode High Heat HVAC Mode Unocc Free Cool ...

Page 31: ...uration UNIT C TYP 3 4 5 and 6 The Fan Mode variable establishes the operating sequence for the supply fan during occupied periods When set to 1 Continu ous the fan will operate continuously during occupied peri ods When set to 0 Automatic the fan will run only during a heating or cooling mode Remote Switch Config RM CF The remote switch input is connected to TB6 terminals 1 and 3 This switch can ...

Page 32: ...with discharge pressure transducers The 48 50A units will be automatically configured for discharge pressure transducers and DP XR should be set to Yes Suction Pressure Transducer Type SP XR This configuration specifies the type of suction pressure trans ducer that is being used Set SP XR to 0 for support of a pressure transducer with a range of 0 to 135 psig Set SP XR to 1 for sup port of a press...

Page 33: ... Constant volume operation for 2 stages of cooling or VAV operation for multiple stages of cooling In addition to these methods of control the A Series ComfortLink control offers the ability to run multiple stages of cooling for either a space temperature sensor or ther mostat by controlling the unit to either a low or high cool sup ply air set point The control type Configuration UNIT C TYP deter...

Page 34: ...rature will be used as the reset control vari able along with both RTIO and LIMT in the calculation of the final amount of reset to be applied Inputs RSET SA S R 3 3RD PARTY RESET The reset value is determined by a 4 to 20 mA third party input An input of 4 mA would correspond to 0ºF reset An input of 20 mA would correspond to 20ºF reset Configur ing the control for this option will cause RES S to...

Page 35: ...36 Cooling Configuration ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT COOL COOLING CONFIGURATION Z GN Capacity Threshold Adjst 10 to 10 Z_GAIN 1 MC LO Compressor Lockout Temp 20 to 55 dF OATLCOMP 40 C FOD Fan Off Delay Mech Cool 0 to 600 sec COOL_FOD 60 MLV Min Load Valve HGBP Yes No MLV_SEL No DS EN Enable Digital Scroll Yes No DIGCMPEN No DS MC DS Min Digital Capacity 25 to 100 MINCAPDS 50 DS AP...

Page 36: ...This configuration will have a range of 80 to 150 F and have a default of 110 F Motormaster Control M M The Motormaster control configuration M M Units with fac tory installed Motormaster V speed control option this config uration must be set to YES See HEAD PRESSURE CON TROL on page 46 and Appendix F for more information NOTE The non factory installed Motormaster V speed con trol accessory is a c...

Page 37: ... be enabled and all other com pressors will be turned off and an alarm enabled to indicate that service is required Indoor and outdoor fans will continue to operate The first outdoor fan stage is turned on immediately The second fan stage will turn on when outdoor air tempera ture OAT rises above 75 F or the highest active circuit satu rated condensing temperature SCT rises above the HPSP and rema...

Page 38: ...n and this method ensures a guaranteed separation in degrees Fahrenheit between the calling out of a heating or cooling mode at all times NOTE There is a sub menu at the local display Run Status TRIP that allows the user to see the exact trip points for both the heating and cooling modes without having to calculate them Re fer to the Cooling Mode Diagnostic Help section on page 42 for more informa...

Page 39: ...details Timeguards In addition to the setpoints and offsets which determine the trip points for bringing on and off cool modes there is a timeguard of 8 minutes which enforces a time delay between the transi tioning from a low cool to a high cool mode There is a timeguard of 5 minutes which enforces a time delay between the transitioning from a heat mode to a cool mode Supply Air Setpoint Control ...

Page 40: ...ol point A start up time delay of 10 minutes and steady state delay after a compressor is energized of 5 minutes is enforced If both circuits of mechanical cooling are running then the economizer will attempt to control to 48 F If the economizer is active and the outside air temperature OAT is less than the cooling control point 0 5 F the compressors will be locked off When mechanical cooling is o...

Page 41: ... OFF ON B2 OFF OFF ON OFF ON ON UNIT Unit Capacity Unit Capacity 030 0 50 100 0 50 100 035 0 50 100 0 50 100 040 0 50 100 0 50 100 050 0 50 100 0 50 100 060 0 50 100 0 50 100 STAGE SEQUENCE 1 SEQUENCE 2 0 1 2 3 0 1 2 3 COMP Compressor Status Compressor Status A1 OFF ON ON ON OFF OFF OFF ON A2 OFF OFF OFF ON OFF ON ON ON B1 OFF OFF ON ON OFF OFF ON ON UNIT Unit Capacity 48 50A Unit Capacity 48 50A ...

Page 42: ...Adjust Z GN This configuration is used on units using the SumZ algo rithm for cooling capacity control Configuration UNIT C TYP 1 2 3 and 5 It affects the cycling rate of the cooling stages by raising or lowering the threshold that capacity must overcome in order to add or subtract a stage of cooling The cooling algorithm s run time variables are located at the local display under Run Status COOL ...

Page 43: ...ride SLOW Y PLU ADD R 0 4375 Cap Threshold Subtracting Z MIN This parameter is used in the calculation of SumZ and is calcu lated as follows Z MIN Configuration COOL Z GN 10 4 SUB R 0 6 Cap Threshold Adding Z PLU This parameter is used in the calculation of SumZ and is calcu lated as follows Z PLU Configuration COOL Z GN 10 4 ADD R 0 6 High Temp Cap Override H TMP If stages of mechanical cooling a...

Page 44: ...e calculation of Z requires two variables Z PLU used when adding a stage and Z MIN used when subtracting a stage They are calculated with the following formulas Z PLU Z GN 10 4 ADD R 0 6 Z MIN Z GN 10 4 SUB R 0 6 Where Z GN configuration used to modify the threshold levels used for staging Configuration COOL Z GN ADD R R PCT C CAP capacity after adding a cooling stage SUB R R PCT C CAP capacity af...

Page 45: ... 20 mA signal must come from an externally sourced controller and should be connected to TB6 7 8 3 CCN LOADSHED This will allow for loadshed and red lining through CCN communications Two Switch Demand Limiting DM L S 1 This type of demand limiting utilizes two discrete inputs Demand Limit Switch 1 Setpoint D L S1 Dmd Limit Switch Setpoint 1 0 to 100 total capacity Demand Limit 2 Setpoint D L S2 Dm...

Page 46: ...e control would be able to cycle up to three stages of outdoor fans see Table 49 to maintain acceptable head pressure For 48 50A units fan stages react to discharge pressure transduc ers DPT Pressures REF P DP A and DP B which are connected to the compressor discharge piping in circuit A and B The control converts the pressures to the corresponding saturated condensing temperatures Temperatures RE...

Page 47: ... 36 50 Ton Contactor OFM s Software Board Conrolled Controlled Common CONDFANA MBB Rly 6 OFC1 OFM1 2 Common CONDFANB MBB Rly 5 OFC2 OFM3 4 of Fans ON Fans ON of Fans ON Fans ON Stage 1 OFC1 2 OFM1 2 Stage 1 OFC1 2 OFM1 2 Stage 2 OFC1 2 4 OFM1 2 3 4 Stage 2 OFC1 2 4 OFM1 2 3 4 Stage 2 if OAT 75 Stage 2 if SCTA or STCB HPSP Stage down if SCTA B HPSP 20 for two minutes and OAT 73 WITH GREENSPEED LOWA...

Page 48: ...FANA MBB Rly 6 OFC4 OFM4 A CMPA1 A2 MBB Rly 3 4 OFC3 OFM3 B CONDFANB MBB Rly 5 OFC2 OFM2 B CMPB1 B2 MBB Rly 1 2 OFC1 OFM1 of Fans ON Fans ON of Fans ON Fans ON Stage 1 OFC3 1 OFM3 Stage 1 OFC1 1 OFM1 Stage 2 OFC3 4 2 OFM3 4 Stage 2 OFC1 2 2 OFM1 2 WITH GREENSPEED LOW AMBIENT OPTION 60 Ton MCHX Contactor OFM s Software Board Conrolled Controlled A OV_ENA LEN n a OFM 3 4 Any Circuit A compressor ON ...

Page 49: ...2 starts with MM_A_VFD MM_B_VFD at 50 then modulates to control HP setpoint Stage down starts with MM_A_VFD at 50 then modulates to control HP setpoint Logic Circuit Controlling Output Circuit A Circuit B If either of the SCT sensors has failed then the control defaults to control based on the OAT sensor and turns on CONDFANB when the ambient is above 65 dF and off when the ambient temperature is ...

Page 50: ... type applications C TYP 1 2 3 or 5 require that the space terminal positions be commanded to open to Minimum Heating positions when gas or electric heat systems are active to provide for the unit heating system s Minimum Heating Airflow rate For VAV applications the heat interlock relay HIR function provides the switching of a control signal intended for use by the VAV terminals This signal must ...

Page 51: ...eating mode based on space temperature SPT If the unit is allowed to select a heat mode then the next step is an evaluation of demand versus setpoint At this point the logic is the same as for control types VAV RAT and VAV SPT C TYP 1 2 except for the actual temperature compared against setpoint See Temperature Driven Heat Mode Evaluation section TEMPERATURE DRIVEN HEAT MODE EVALUATION This sectio...

Page 52: ...splay which lets the user quickly view the state of the system This menu also contains the cool trip points as well See Table 51 at the local display under Run Status TRIP The controlling temperature is TEMP and is in the middle of the table for easy reference Also the HVAC mode can be viewed at the bottom of the table Table 51 Mode Trip Helper Table Two Stage Gas and Electric Heat Control HT CF 1...

Page 53: ... is HIGH HEAT The supply fan for staged gas heating is controlled by the integrated gas control IGC boards and unless the supply fan is on for a different reason it will be controlled by the IGC indoor fan input Command all stages of heat ON If the HVAC mode is LOW HEAT The supply fan for staged gas heating is controlled by the integrated gas control IGC boards and unless the supply fan is on for ...

Page 54: ...rst two staged gas heat outputs are located on the MBB board and outputs 3 4 5 and 6 are located on the SCB board These out puts are used to produce 5 to 11 stages as shown in Table 53 The heat stage selected Run Status VIEW HT ST is clamped between 0 and the maximum number of stages possible Run Sta tus VIEW H MAX for the chosen set of staging patterns See Tables 53 57 Table 53 Staged Gas Heat 48...

Page 55: ...The IGC boards only control the first stage of gas heat on each gas valve The second stages are controlled directly from the MBB board The IGC board has a minimum on time of 1 minute In modes such as Service Test where long minimum on times are not enforced the 1 minute timer on the IGC will still be fol lowed and the gas will remain on for a minimum of 1 minute Table 58 IGC LED Indicators NOTES 1...

Page 56: ...e is in effect then the vent trip point is T CL If in a pre occupied purge mode Operating Modes MODE IAQ P ON then the trip point is T PRG If in an occupied mode Operating Modes MODE IAQ P ON then the trip point is T V OC For all other cases the trip point is T V UN NOTE The unoccupied economizer free cooling mode does not qualify as a HVAC cool mode as it is an energy saving feature and has its o...

Page 57: ...X HT VM When in LOW COOL mode and the compressor stage less than 50 fan will be as SP MN mini mum speed When in HIGH COOL the fan will be at SP MX maximum speed In heating mode the fan will operate at SP MX maximum speed when the heating stage is 75 or greater and at HT VM heating minimum speed when the heat ing stage is less than 75 On units configured for two stage thermostat operation the fan w...

Page 58: ...is option is used to configure the static pressure reset func tion When SP RS 0 there is no static pressure reset via an analog input If the outdoor air quality sensor is not configured Configuration IAQ IAQ CF OQ A C 0 then it is possible to use the outdoor air quality sensor location on the CEM board to perform static pressure reset via an external 4 to 20 mA input Configuring SP RS 1 provides s...

Page 59: ...rocess for the field this system con trol is designed so that the installer only needs to enter a maxi mum duct design pressure or maximum equipment pressure whichever is less There is no longer a need to calculate the worst case pressure drop at design conditions and then hope that some intermediate condition does not require a higher sup ply static pressure to meet the load conditions For exampl...

Page 60: ...pped with a field installed accessory dirty filter switch The switch is located in the filter section If a dirty filter switch is not installed the switch input is configured to read clean all the time To enable the sensor for dirty filter monitoring set Configura tion UNIT SENS FLT S to ENABLE The state of the filter status switch can be read at Inputs GEN I FLT S See Table 62 Table 62 Dirty Filt...

Page 61: ...EC 2 seconds after the econo mizer has stopped moving The control will log a damper not modulating alert if 1 SAT has not decreased by T24SATMD degrees F SAT_SET 2 seconds after opening the economizer at least T24ECSTS taking into account whether the entire move ment has occurred within the range 0 to T24TSTMN 2 SAT has not increased by T24SATMD degrees F SAT_SET 2 seconds after closing the econom...

Page 62: ...ewpoint limit check requires an installed outdoor relative humidity sensor installed Dry Bulb Changeover OAT L Outside air temperature may be viewed under Temperatures AIR T OAT The control constantly compares its outside air temperature reading against the high temperature OAT lockout OAT L If the temperature reads above OAT L the economizer will not be allowed to perform free cooling Economizer ...

Page 63: ... on what Configuration ECON OA E C is configured for if the outdoor enthalpy exceeds the Honeywell curves or the outdoor enthalpy compare value Configuration ECON OA EN then free cooling will not be allowed Differential Enthalpy Changeover This option compares the outdoor air enthalpy to the return air enthalpy and chooses the option with the lowest enthalpy This option should be used in climates ...

Page 64: ...e supply air setpoint Setpoints SASP plus any supply air reset that may be applied Inputs RSET SA S R FDD CONFIGURATIONS Log Title 24 Faults LOG F Enables Title 24 detection and logging of mechanically discon nected actuator faults T24 Econ Move Detect EC MD Detects the amount of change required in the reported position before economizer is detected as moving T24 Econ Move SAT Test EC ST The minim...

Page 65: ...tion pressure reset see below NOTE To check the current cooling stage go to Run Status Cool CUR S If the C TYP is either 1 2 3 or 5 and the unit is in a cool mode then EC C P the Cooling Control Point Run Status VIEW CL C P Economizer Suction Pressure Reset for Two Stage Cooling If the unit s control type is set to either 2 stage thermostat or 2 stage space temperature control then there is no coo...

Page 66: ...essure Maximum Speed BP MX This configuration is the maximum allowed VFD speed during building pressure control This configuration is only active when BP CF 3 VFD Fire Speed BP FS This configuration is the VFD speed override when the control is in the purge or evacuation smoke control modes This con figuration is only active when BP CF 3 Power Exhaust Motors BP MT This configuration is machine dep...

Page 67: ... MULTIPLE POWER EXHAUST STAGE BUILDING PRES SURE CONTROL BP CF 2 OPERATION Building pressure control is active whenever the supply fan is running The control algorithm to be used BP SL 1 is a timed threshold technique for bringing stages of power exhaust on and off The number of power exhaust stages available for this control algorithm is a function of the number of motors it supports This number ...

Page 68: ...g an adjacent space with its smoke Closing the economizer thereby opening the return air damper turning on the power exhaust and shutting down the indoor fan de crease pressure in the space Smoke Purge Mode This mode attempts to draw out smoke from the space after the emergency condition Opening the economizer thereby clos ing the return air damper turning on both the power exhaust and indoor fan ...

Page 69: ... AIR Q submenu The lower of these two configu rable positions is referred to as the IAQ Demand Vent Min Po sition IAQ M while the higher is referred to as Economizer Minimum Position EC MN The IAQ M should be set to an economizer position that brings in enough fresh air to remove contaminants and CO2 generated by sources other than people The EC MN value should be set to an economizer position tha...

Page 70: ...type of IAQ position control It has the following options IQ A C 0 No analog input If there is no other mini mum position control the economizer minimum position will be Configuration IAQ DCV C EC MN and there will be no IAQ control IQ A C 1 IAQ analog input An indoor air space or re turn air CO2 sensor is installed If an outdoor air CO2 sen sor is also installed or OAQ is broadcast on the CCN or ...

Page 71: ...ample of Economizer Position of Dual Setpoint Configuration 25 20 15 10 5 0 0 10 20 30 40 50 60 70 80 70 80 FIXED MIN WITH OFFSET FIXED MINIMUM DUAL SETPOINT W ITH OFFSET DUAL SETPOINT ECONOPOS SFAN_VFD 90 Fig 16 Example of Dual Setpoint Versus Fixed Minimum Economizer Position ...

Page 72: ... the differential CO2 level at which IAQ control of the dampers will be initiated Diff Air Quality Hi Limit Configuration IAQ AQ SP DAQ H This is the differential CO2 level at which IAQ control of the dampers will be at maximum and the dampers will be at the Configuration IAQ DCV C EC MN DAQ ppm Fan Off Setpoint Configuration IAQ AQ SP D F OF This is the CO2 level at which the indoor fan will be t...

Page 73: ...idification function will override cooling staging setpoint and deliver cooler air to the Fan Section in order to satisfy a humidity setpoint at the space or return air humidity sensor The Reheat function will activate a suitable heating system concurrent with dehumidification sequence should the dehumidification operation result in excessive cooling at the Evaporator Dewpoint sensor The dehumidif...

Page 74: ...ation Including Reheat Control If a dehumidification mode is initiated the rooftop will attempt to lower humidity as follows Economizer Cooling The economizer if allowed to per form free cooling will have its control point Run Status VIEW EC C P set to Configuration DEHU D C SP If Configuration DEHU D EC D is disabled the econ omizer will always be disabled during dehumidification Cooling For all ...

Page 75: ... to satisfy part load type conditions when there is a space call for cooling and dehumidification Although the temperature may have dropped and decreased the sensible load in the space the outdoor and or space humidity levels may have risen A typical scenario might be when the outside air is 85 F and 70 to 80 relative humidi ty RH Desired SHR for equipment in this scenario is typical ly from 0 4 t...

Page 76: ...cations SETTING UP THE SYSTEM The settings for temperature compensated start can be found in the local display under Configuration UNIT TCST Cool Factor TCS C This is the factor for the start time bias equation for cooling TCST Heat Factor TCS H This is the factor for the start time bias equation for heating NOTE Temperature compensated start is disabled when these factors are set to 0 ITEM EXPANS...

Page 77: ... savings time adjustments Even if the rooftop is stand alone the user may want to set this to ON to accomplish the daylight savings function CCN OAT Broadcast OAT B If this configuration is set to ON the control will periodically broadcast its outside air temperature at a rate of once every 30 minutes CCN OARH Broadcast ORH B If this configuration is set to ON the control will periodically broadca...

Page 78: ...lert Limit Occ SA L O If the evaporator discharge temperature is below the configu rable occupied evaporator discharge temperature EDT Low Alert Limit SA L O then Alert 302 will be generated and cooling operation will be stopped but heating operation will continue The alert will automatically reset EDT High Alert Limit Occ SA H O If the evaporator discharge temperature is above the configu rable o...

Page 79: ...actual measured temperature Return Air Temperature Sensor Trim RAT T This variable is used to adjust the return air temperature sensor reading The sensor reading can be adjusted 10 F to match the actual measured temperature Outdoor Air Temperature Sensor Trim OAT T This variable is used to adjust the outdoor air temperature sen sor reading The sensor reading can be adjusted 10 F to match the actua...

Page 80: ...the local display set tings A list is shown in Table 74 Test Display LEDs TEST This is used to test the operation of the ComfortLink display Metric Display METR This variable is used to change the display from English units to Metric units Language Selection LANG This variable is used to change the language of the Com fortLink display At this time only English is available Password Enable PAS E Th...

Page 81: ...uit to reduce the cooling effect from Circuit A The hot gas bypass system is a factory installed option in stalled on Circuit A only This function is enabled at Configu ration COOL MLV When this function is enabled an additional stage of cooling capacity is provided by the unit control staging sequences see Tables 38 39 43 and 45 Space Temperature Offset Space temperature offset corresponds to a T...

Page 82: ...l not be used on Tuesday This variable can be set for Periods 1 through 8 Wednesday In Period PER X DAYS WED This variable is used to include or remove Wednesday from the schedule Each period is assigned an occupied on and off time If this variable is set to YES then Wednesday will be included in that period s occupied time schedule If this variable is set to NO then the period s occupied time sch...

Page 83: ...d for daylight sav ings time DAYLIGHT SAVINGS START DS ST This submenu configures the start date and time for daylight savings Daylight Savings Start Month DS ST ST MN This is the start month for daylight savings time The numbers 1 to 12 correspond to the months of the year e g January 1 Daylight Savings Start Week DS ST ST WK This is the start week of the month for daylight savings The week can b...

Page 84: ...and 4 The resistance values are listed in Table 87 THERMISTOR TEMPERATURE SENSOR CHECK A high quality digital volt ohmmeter is required to perform this check 1 Connect the digital voltmeter across the appropriate thermis tor terminals at the J8 terminal strip on the main base board 2 Using the voltage reading obtained read the sensor tempera ture from Tables 82 87 3 To check thermistor accuracy me...

Page 85: ...direction 8 Correct wiring Outdoor Fan Off 1 Fan slips on shaft 1 Tighten fan hub setscrews 2 Motor not running 2 Check power and capacitor 3 Motor overload open 3 Check overload rating Check for fan blade obstruction 4 Motor burned out 4 Replace motor 5 VFDs not functioning 5 Verify the VFDs replace if needed COMPRESSOR CYCLES ON LOW PRESSURE Indoor Air Fan Running 1 Filter drier plugged 1 Replac...

Page 86: ...ng replace with correct fuses 3 No control power 3 Check secondary fuses Replace with correct type and size Replace transformer if primary windings are receiving power INDOOR FAN CONTACTOR CLOSED 1 VFD overload function tripped 1 Refer to separate VFD technical manual for troubleshooting instructions 2 Motor leads loose 2 Check connections at motor lead junction box 3 Motor windings open 3 Check m...

Page 87: ...idistat Thermidistat etc Check reduce setting on discrete humidity input device Relative Humidity setpoint is too low RH sensor Check the dehumidification relative humidity setpoint Configura tion DEHU D RH S Software configuration error for the type of relative humidity sensor being used Check that the unit software is configured for the correct relative humidity sensor Configuration DEHU D SEN D...

Page 88: ...or short circuited windings Shut down power to the unit and connect ohmmeter probes across the black and white terminals Resistance should measure 75 Ohms 10 Next connect ohmmeter probes across the red and green terminals Resistance should measure 75 Ohms 10 The meter should not show an open or a short when a winding leg is measured If either occurs replace the valve Valve is not calibrated proper...

Page 89: ...rmostat occupancy schedule setpoint not call ing for Heating Check using ComfortLink scrolling marquee No 24 vac at primary contactor Check transformer and circuit breaker No power high voltage to L2 of primary contactor Check safety switches one shot backup and auto limit Bad electrical elements Power off unit and remove high voltage wires Check resis tance of heater replace if open ...

Page 90: ...90 Fig 19 IGC Service Analysis Logic LEGEND NOTE Thermostat Fan Switch in the AUTO position IDM Induced Draft Motor IGC Integrated Gas Unit Controller ...

Page 91: ...9 3 906 88 1 298 3 814 89 1 278 3 726 90 1 257 3 640 91 1 237 3 556 92 1 217 3 474 93 1 198 3 395 94 1 179 3 318 95 1 160 3 243 96 1 141 3 170 97 1 122 3 099 98 1 104 3 031 99 1 086 2 964 100 1 068 2 898 101 1 051 2 835 102 1 033 2 773 103 1 016 2 713 104 0 999 2 655 105 0 983 2 597 106 0 966 2 542 107 0 950 2 488 108 0 934 2 436 109 0 918 2 385 110 0 903 2 335 111 0 888 2 286 112 0 873 2 239 113 ...

Page 92: ...4 749 3 2 547 14 026 4 2 500 13 342 5 2 454 12 696 6 2 407 12 085 7 2 360 11 506 8 2 312 10 959 9 2 265 10 441 10 2 217 9 949 11 2 170 9 485 12 2 123 9 044 13 2 076 8 627 14 2 029 8 231 TEMP C VOLTAGE DROP V RESISTANCE Ohms 15 1 982 7 855 16 1 935 7 499 17 1 889 7 161 18 1 844 6 840 19 1 799 6 536 20 1 754 6 246 21 1 710 5 971 22 1 666 5 710 23 1 623 5 461 24 1 580 5 225 25 1 538 5 000 26 1 497 4 ...

Page 93: ...9 88 2 173 7 685 89 2 144 7 507 90 2 115 7 333 91 2 087 7 165 92 2 059 6 999 93 2 030 6 838 94 2 003 6 683 95 1 975 6 530 96 1 948 6 383 97 1 921 6 238 98 1 894 6 098 99 1 867 5 961 100 1 841 5 827 101 1 815 5 698 102 1 789 5 571 103 1 763 5 449 104 1 738 5 327 105 1 713 5 210 106 1 688 5 095 107 1 663 4 984 108 1 639 4 876 109 1 615 4 769 110 1 591 4 666 111 1 567 4 564 112 1 544 4 467 113 1 521 ...

Page 94: ...480 4 203 47 1 439 4 042 48 1 400 3 889 49 1 362 3 743 50 1 324 3 603 51 1 288 3 469 52 1 252 3 340 53 1 217 3 217 54 1 183 3 099 55 1 150 2 986 56 1 117 2 878 57 1 086 2 774 58 1 055 2 675 59 1 025 2 579 60 0 996 2 488 61 0 968 2 400 TEMP C VOLTAGE DROP V RESISTANCE Ohms 62 0 940 2 315 63 0 913 2 235 64 0 887 2 157 65 0 862 2 083 66 0 837 2 011 67 0 813 1 943 68 0 790 1 876 69 0 767 1 813 70 0 74...

Page 95: ...039 48 0 938 154 1 982 259 3 015 364 4 049 49 0 948 155 1 992 260 3 025 365 4 059 50 0 958 156 2 001 261 3 035 366 4 068 51 0 968 157 2 011 262 3 045 367 4 078 52 0 978 158 2 021 263 3 055 368 4 088 53 0 988 159 2 031 264 3 064 369 4 098 54 0 997 160 2 041 265 3 074 370 4 108 55 1 007 161 2 051 266 3 084 371 4 118 56 1 017 162 2 060 267 3 094 372 4 128 57 1 027 163 2 070 268 3 104 373 4 137 58 1 0...

Page 96: ...1 705 292 2 201 50 0 718 131 1 214 212 1 711 293 2 207 51 0 724 132 1 220 213 1 717 294 2 213 52 0 730 133 1 226 214 1 723 295 2 220 53 0 736 134 1 233 215 1 729 296 2 226 54 0 742 135 1 239 216 1 735 297 2 232 55 0 748 136 1 245 217 1 741 298 2 238 56 0 754 137 1 251 218 1 747 299 2 244 57 0 761 138 1 257 219 1 754 300 2 250 58 0 767 139 1 263 220 1 760 301 2 256 59 0 773 140 1 269 221 1 766 302 ...

Page 97: ...3 213 540 3 721 623 4 230 375 2 710 458 3 219 541 3 728 624 4 236 376 2 716 459 3 225 542 3 734 625 4 243 377 2 722 460 3 231 543 3 740 626 4 249 378 2 728 461 3 237 544 3 746 627 4 255 379 2 734 462 3 243 545 3 752 628 4 261 380 2 741 463 3 249 546 3 758 629 4 267 381 2 747 464 3 256 547 3 764 630 4 273 382 2 753 465 3 262 548 3 770 631 4 279 383 2 759 466 3 268 549 3 777 632 4 285 384 2 765 467 ...

Page 98: ...plays the current cooling control point a target value for air temperature leaving the evaporator coil location Run Status VIEW C CAP This variable displays the current amount of unit cooling ca pacity in percent of maximum Run Status VIEW HT C P This variable displays the current heating control point for use with staged gas control option only a target value for air tem perature leaving the supp...

Page 99: ...or Bad YES NO OAT_STAT FORC Economizer Forced YES NO ECONFORC SFON Supply Fan Not On 30s YES NO SFONSTAT CLOF Cool Mode Not In Effect YES NO COOL_OFF OAQL OAQ Lockout in Effect YES NO OAQLOCKD HELD Econ Recovery Hold Off YES NO ECONHELD DH DS Dehumid Desabled Econ YES NO DHDISABL O AIR OUTSIDE AIR INFORMATION OAT Outside Air Temperature dF OAT forcible OA RH Outside Air Rel Humidity OARH forcible ...

Page 100: ...rride PULL If the error from setpoint is above 4 F and the rate of change is less than 1 F per minute then pulldown is in effect and SUM is set to 0 This keeps mechanical cooling stages from being added when the error is very large but there is no load in the space Pulldown for units is expected to rarely occur but is included for the rare situation when it is needed Most likely pulldown will occu...

Page 101: ... run If the circuit is able to run for 1 minute its replacement circuit will be allowed to shut down if not required to run to satisfy requested stages How ever the troubled circuit must run continuously for 5 min utes with no detectable problems before the strike counter is re set to zero All the alarms and alerts are summarized in Table 99 ITEM EXPANSION RANGE UNITS POINT WRITE STATUS LINK CCN L...

Page 102: ...oblem T120 Circuit A Low Saturated Suction Temperature Alert Stop circuit Automatic Low refrigerant charge low airflow dirty coil broken fan belt TXV problem A121 Circuit B Low Saturated Suction Temperature Alarm Stop circuit Manual Low refrigerant charge low airflow dirty coil broken fan belt TXV problem P121 Circuit B Low Saturated Suction Temp Comp B2 Shutdown Compressor B2 shutdown Automatic L...

Page 103: ...c Fan drive failure T409 Supply Fan Status Failure Commanded on Sensed off or Commended off Sensed on Continue to run unit Automatic Fan drive failure or sensor failure T414 Loss of Communication with the Belimo Actuator Close economizer Automatic Calibrate economizer economizer fail ure wiring T414 Belimo Actuator Direction Error Close economizer Automatic Motor direction switch wrong wiring T414...

Page 104: ...pressor Wiring Error A wiring error might not allow the compres sor to start To check out alerts 051 052 055 and 056 1 Turn on the compressor in question using Service Test mode If the compressor does not start then most likely the problem is one of the following HPS open open internal protection circuit breaker trip incorrect safety wiring or incorrect com pressor wiring 2 If the compressor does ...

Page 105: ...e air humidity sensor Inputs REL H OA RH has a reading less than 2 mA Failure of this sensor will disable any elements of the control which re quires its use including economizer outdoor and differential enthalpy control The OA RH sensor is located in the econo mizer hood and is used for control of the economizer The sen sor is a loop powered 4 to 20 mA sensor This alert resets auto matically The ...

Page 106: ...larm This alert alarm is for units with a digital scroll compressor on ly The digital scroll compressor is equipped with a tempera ture thermistor that is attached to the discharge line of the com pressor The alert occurs when the discharge temperature thermistor has measured a temperature above 268 F or the thermistor is short circuited The digital scroll compressor will be shut down and alert T1...

Page 107: ...e alarm will auto matically reset A173 ECB1 Board Communication Failure This alarm indicates that there are communications problems with the economizer control board This will result in the economizer and the power exhaust not working and the dampers to be fully closed The exhaust fans will stop The alarm will automatically reset A174 ECB2 Board Communication Failure This alarm indicates that ther...

Page 108: ...5 minutes or the SAT HI Alert Limit Unocc Configuration ALLM SA H U for 10 minutes then an alert will be broad cast The alert will automatically reset T304 Return Air Temperature Below Limit If the return air temperature measured by the RAT sensor is be low the configurable RAT LO Alert Limit Occ Configuration ALLM RA L O for 5 minutes or RAT LO Alert Limit Un occ Configuration ALLM RA L U for 10 ...

Page 109: ...he switch might be open or closed The con figuration for this switch input can be found at variable Con figuration SW LG SFS L Verify that the configuration is set correctly Verify the wiring and filter status switch The hose should be connected to the low side of the switch This alert resets automatically The dirty filter switch is enabled at Configuration UNIT SENS FLT S A409 Supply Fan Commande...

Page 110: ...lure This alarm indicates a failure of the sensor supply air temperature sensor or the leaving air temperature sensor if using hydronic heat This alarm occurs when the temperature sensor Tempera tures AIR T SAT is outside the range 40 to 240 F 40 to 116 C This alarm resets automatically The cause of the alarm is usually a faulty thermistor a shorted or open thermistor caused by a wiring error or a...

Page 111: ...r moni toring of the supply air temperature This board is located in the gas heat section of the unit The inputs and outputs are summa rized in Table 103 ROOFTOP CONTROL BOARD RXB The RXB is used in place of ECB2 on all unit sizes with op tional digital scroll compressor and or optional Humidi MiZer system The board has additional inputs to sense the digital compressor discharge temperature The bo...

Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...

Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...

Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...

Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...

Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...

Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...

Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...

Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...

Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...

Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...

Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...

Page 123: ...Zer Valve HPS High Pressure Switch HR Heat Relay HS Hall Effect Induced Draft Motor Switch HVS Humidi MiZer Valve Solenoid IAQ Indoor Air Quality IDF Induced Draft Fan IDM Induced Draft Motor IFC Indoor Fan Contactor IFCB Indoor Fan Circuit Breaker IFM Indoor Fan Motor IGC Integrated Gas Control Board IP Internal Compressor Protector LAT Staged Gas Temperature Sensor LEN Local Equipment Network LS...

Page 124: ...thermistor 18 20 0 to 5vdc thermistor ohms RAT Return air temperature AN5 J8 9 10 9 thermistor ohms SA_TEMP Supply air temperature AN6 J8 11 12 11 thermistor ohms OAT Outdoor air temperature AN7 J8 13 14 13 thermistor ohms SPT Space temperature T55 56 AN8 J8 1 2 1 thermistor ohms SPTO Space temperature offset T56 AN9 J8 3 4 3 thermistor ohms IAQ IAQMINOV IAQ analog input AN10 J8 5 6 5 thermistor o...

Page 125: ...RLY6B 1 Closes RLY6A RLY6B POINT NAME POINT DESCRIPTION I O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN S PORT STATE INPUTS DI1 J4 1 2 2 Vin 1 24VAC 24VAC 1 0VAC 0 DI2 J4 3 4 4 Vin 3 24vac 24VAC 1 0VAC 0 DI3 J4 5 6 6 Vin 5 24vac DI4 J4 7 8 8 Vin 7 24vac DI5 J4 9 10 10 Vin 9 24vac DI6 J4 11 12 12 Vin 11 24vac BP Building static pressure AN1 J5 1 3 1 24VDC 2 0 to 20mA in 3 GND 0 to 20mA SP Supply D...

Page 126: ... 13 14 0 to 5VDC thermistor ohms AN6 J6 1 3 1 5v 2 Vin 3 GND thermistor 1 2 0 to 5VDC thermistor ohms AN7 J6 4 6 4 5v 5 Vin 6 GND thermistor 4 5 0 to 5VDC thermistor ohms AN8 J6 7 9 7 5v 8 Vin 9 GND thermistor 7 8 0 to 5VDC thermistor ohms AN9 J7 1 2 1 thermistor ohms AN10 J7 3 4 3 thermistor ohms OUTPUTS AO1 J8 1 2 1 0 to 20mA 2 GND 0 to 20mA OUT AO2 J8 3 4 3 0 to 20mA 4 GND 0 to 20mA OUT HS3 Hea...

Page 127: ... thermistor 7 8 0 to 5VDC thermistor ohms AN9 J7 1 2 1 thermistor ohms AN10 J7 3 4 3 thermistor ohms OUTPUTS MM_A_VFD Motor Master VFD A AO1 J8 1 2 1 0 to 20mA 2 GND 0 to 20mA OUT MM_B_VFD Motor Master VFD B AO2 J8 3 4 3 0 to 20mA 4 GND 0 to 20mA OUT MM_A_RUN Motor Master A RunEnable RLY1 J9 1 3 1 2 RLY1A 3 RLY1B 1 Closes RLY1A RLY1B MM_B_RUN Motor Master B RunEnable RLY2 J9 4 6 4 5 RLY2A 6 RLY2B ...

Page 128: ...put EDTRESMA 4 20mA Evaporator Discharge SP Reset AN9 J6 7 9 8 7 loop power 0 to 20mA input OAQ Outside Air CO2 Sensor AN10 J6 10 12 11 10 loop power 0 to 20mA input SPRESET SP Reset milliamps AN10 J6 10 12 11 10 loop power 0 to 20mA input CEM_10K1 CEM_4201 CEM AN1 10k temp J5 1 2 CEM AN1 4 20 ma J5 1 2 AN1 J5 1 2 1 thermistor ohms CEM_10K2 CEM_4202 CEM AN2 10k temp J5 3 4 CEM AN2 4 20 ma J5 3 4 A...

Page 129: ...ROHIBITED when P5 5 1 and P5 4 1 12VDC J6 3 3 Power Output Coil3A J6 4 4 HI Z when P5 3 and P5 2 0 12vdc when P5 3 1 and P5 2 0 0vdc when P5 3 0 and P5 2 1 PROHIBITED when P5 3 1 and P5 2 1 Coil4A J6 5 5 HI Z when P5 1 and P5 0 0 12vdc when P5 1 1 and P5 0 0 0vdc when P5 1 0 and P5 0 1 PROHIBITED when P5 1 1 and P5 0 1 COND_EXV Bypass EXV Position OUTB Coil1B J7 1 1 HI Z when P8 7 and P8 6 0 12vdc...

Page 130: ...45 Q2 51 D CB C5 TEST U3 CEBD430349 BBA01D D1 C52 U4 C15 R119 U2 L1 17 33 LEN L6 C22 U9 C30 U7 C50C49 R14 R140 Q4 Q3 C21 R13 R27 1 R 48 R145 C81 R1 D1 R13 OUT A OUT B 1 1 J6 J7 C42 UB C E P L 1 3 0 3 4 9 0 1 3 83 4 33 0 25 TYP 2 95 5 68 5 93 0 57 0 06 1 65 MAX 0 25 TYP Fig 34 Humidi MiZer EXV Board NOTE Dimensions are shown in inches POINT NAME POINT DESCRIPTION CONNECTOR PIN NO INPUTS RT 24 Volt ...

Page 131: ...ng the off mode and is stopped by driving the speed to 0 by sending a 2 mA signal to the VFD The A Series units use ABB ACH550 VFDs The interface wiring for the VFDs is shown in Fig 36 Terminal designations are shown in Table 108 Table 108 VFD Terminal Designations POWER EXHAUST The units can be equipped with an optional power exhaust sys tem The power exhaust fans are forward curved fans with di ...

Page 132: ...ch measures the pressure drop across the filters and closes when an adjustable pressure setpoint is exceeded The sensor is located in the return air section behind the filter ac cess door RETURN AIR CO2 SENSOR The unit can also be equipped with a return air IAQ CO2 sensor that is used for the demand controlled ventilation The sensor is located in the return air section and can be accessed from the...

Page 133: ... VDC 8 Smoke Detector Remote Alarm external contacts 9 Smoke Detector Remote Alarm external contacts 10 Fire Shutdown 24 VAC external 11 Fire Shutdown external contact 12 Fire Control Common external contact 13 Fire Pressurization external contact 14 Fire Evacuation external contact 15 Fire Smoke Purge external contact 16 Not Used TB 6 FIELD CONNECTIONS HY84HA101 in Main Control Box TB6 1 Remote O...

Page 134: ...are outdoor air dry bulb differential dry bulb outdoor air enthalpy curves differential enthalpy custom curves a combination of an enthalpy dewpoint curve and a dry bulb curve The units are equipped as standard with an outside air and re turn air dry bulb sensor which supports the dry bulb change over methods If the other methods are to be used then a field installed humidity sensor must be instal...

Page 135: ...ve and signal ground pins of each system element Wiring connections for CCN should be made at TB3 See Fig 40 Consult the CCN Contractor s Manual for further information NOTE Conductors and drain wire must be 20 AWG American Wire Gage minimum stranded tinned copper Individual con ductors must be insulated with PVC PVC nylon vinyl Teflon1 or polyethylene An aluminum polyester 100 foil shield and an ...

Page 136: ...TE CCN SITE TELINK NON CARRIER HVAC EQUIPMENT BRIDGE RECOM MENDED CID ROOFTOP UNIT COMFORT ID AIR TERMINAL CID CID AIR DISTRIBUTION DIGITAL AIR VOLUME CONTROL DAV COMFORT ID FAN POWERED MIXING BOX TO ADDITIONAL TERMINALS HEATING COOLING UNITS COMPUTER WITH ComfortView SOFTWARE ROOFTOP UNIT CL ROOFTOP UNIT CL ROOFTOP UNIT CL ROOFTOP UNIT CL CCN BUS CL COMFORT CONTROLLER COMFORT ID AIR TERMINAL ...

Page 137: ...into opening to inspect wheel If cleaning is re quired remove motor and wheel assembly by removing screws holding motor mounting plate to top of combustion fan housing Fig 43 and 44 The motor scroll and wheel assembly can be re moved from the unit Remove scroll from plate Remove the blower wheel from the motor shaft and clean with a detergent or solvent Replace motor and wheel assembly ROUND TUBE ...

Page 138: ... 1 Remove any foreign objects or debris attached to the coil face or trapped within the mounting frame and brackets 2 Put on personal protective equipment including safety glass es and or face shield waterproof clothing and gloves It is recommended to use full coverage clothing 3 Remove all surface loaded fibers and dirt with a vacuum cleaner as described above 4 Thoroughly wet finned surfaces wit...

Page 139: ...ight toward the coil Do not exceed 900 psig or 30 degree angle The nozzle must be at least 12 in from the coil face Reduce pressure and use caution to prevent damage to air centers CONDENSATE DRAIN Check and clean each year at start of cooling season In winter keep drains and traps dry FILTERS Clean or replace at start of each heating and cooling season or more often if operating conditions requir...

Page 140: ...lex members have collars that need to be inserted into the smaller hole of the drive shaft flange 8 Assemble the flex member drive shaft assembly to one of the shaft flanges using 2 bolts and nuts Slide the other shaft flange towards the assembly and assemble using 2 bolts and nuts If the shafts are not misaligned the collar in the flex member should line up with the shaft flange holes 9 Torque nu...

Page 141: ...ove fan belt s 7 Slide motor plate to the front and hand tighten one of the rear motor plate nuts tight enough to prevent the motor plate from sliding back but loose enough to allow the plate to piv ot upward 8 Pivot the front of the motor plate upward enough to allow ac cess to the motor mounting hex bolts and secure in place by inserting a prop 9 Remove the nuts from the motor mounting hex bolts...

Page 142: ...e saturated suction temperature and saturated condensing temperature available on the Com fortLink display and find the intersection point on the cooling charging chart If intersection point is above the line carefully recover some of the refrigerant If intersection point is below the line carefully add refrigerant NOTE Indoor air cfm must be within normal operating range of unit Units with Humidi...

Page 143: ...5 110 115 120 125 Outdoor Air Temperature deg F Saturated Discharge Temperature deg F Reduce Charge if Above Curve Add Charge if Below Curve SST 45 F SST 55 F SST 35 F 20 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 ...

Page 144: ...115 120 125 Outdoor Air Temperature deg F Saturated Condensing Temperature deg F Reduce Charge if Above Curve Add Charge if Below Curve S S T 4 5 F S S T 5 5 F S S T 3 5 F 25 and 27 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 55 60 65 70 75 80 85 90 95 100 105 110 1...

Page 145: ...120 125 Outdoor Air Temperature deg F Saturated Condensing Temperature deg F Reduce Charge if Above Curve Add Charge if Below Curve S S T 4 5 F S S T 5 5 F S S T 3 5 F 30 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 ...

Page 146: ...5 120 Outdoor Air Temperature deg F Saturated Condensing Temperature deg F Reduce Charge if Above Curve Add Charge if Below Curve S S T 4 5 F S S T 5 5 F S S T 3 5 F 35 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Outdoor Air...

Page 147: ...A040 with R 410A Refrigerant LEGEND MCHX Microchannel Heat Exchanger SST Saturated Suction Temperature 50 Ton MCHX Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 Outdoor Air Temperature deg F Saturated Condensing Temperature deg F Reduce...

Page 148: ...120 125 Outdoor Air Temperature deg F Saturated Condensing Temperature deg F Reduce Charge if Above Curve Add Charge if Below Curve S S T 4 5 F S S T 5 5 F S S T 3 5 F 60 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 ...

Page 149: ...pressure measuring device and replace 1 8 in pipe plug and screw cap 11 Turn main gas valve to ON position and check heating operation Main Burners For all applications main burners are factory set and should re quire no adjustment MAIN BURNER REMOVAL FIG 57 1 Shut off field supplied manual main gas valve 2 Shut off power supply to unit 3 Remove heating access panel 4 Disconnect gas piping from ga...

Page 150: ...65 99 OA E Outside Air Enthalpy OAE 65 99 OA D T OutsideAir Dewpoint Temp dF OADEWTMP 65 99 COOL COOLING INFORMATION C CAP Current Running Capacity CAPTOTAL 43 43 98 99 CUR S Current Cool Stage COOL_STG 43 98 99 MAX S Maximum Cool Stages CLMAXSTG 43 98 99 DEM L Active Demand Limit DEM_LIM forcible 43 43 98 99 SUMZ COOL CAP STAGE CONTROL 43 99 SMZ Capacity Load Factor SMZ 43 98 99 ADD R Next Stage ...

Page 151: ...fig 23 28 S STP Soft Stop Request YES NO SOFTSTOP forcible 23 FAN F Supply Fan Request YES NO SFANFORC forcible 23 F 4 CH 4 in Filter Change Mode YES NO FILT4CHG 23 INDP TEST INDEPENDENT OUTPUTS ECN C Economizer Act Cmd Pos ECONCTST 23 E PWR Economizer Power Test ECONPTST 23 E CAL Calibrate the Economizer ECON_CAL 23 110 PE A Power Exhaust Relay A PE_A_TST 23 PE B Power Exhaust Relay B PE_B_TST 23...

Page 152: ...F T REFRIGERANT TEMPERATURES SCT A Cir A Sat Condensing Tmp 40 to 240 dF SCTA SST A Cir A Sat Suction Temp 40 to 240 dF SSTA SCT B Cir B Sat Condensing Tmp 40 to 240 dF SCTB SST B Cir B Sat Suction Temp 40 to 240 dF SSTB DT DS DS Discharge Temperature 40 to 240 dF DTDS ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS AIR P AIR PRESSURES SP Static Pressure H2O SP BP Building Pressure H2O BP REF P ...

Page 153: ...F CSB_B2 STAT THERMOSTAT INPUTS G Thermostat G Input ON OFF G forcible W1 Thermostat W1 Input ON OFF W1 forcible W2 Thermostat W2 Input ON OFF W2 forcible Y1 Thermostat Y1 Input ON OFF Y1 forcible Y2 Thermostat Y2 Input ON OFF Y2 forcible FIRE FIRE SMOKE INPUTS FSD Fire Shutdown Input ALARM NORMAL FSD forcible PRES Pressurization Input ALARM NORMAL PRES forcible EVAC Evacuation Input ALARM NORMAL ...

Page 154: ...OFF HS5 HT 6 Relay 6 W2 Gas Valve 3 ON OFF HS6 H I R Heat Interlock Relay ON OFF HIR forcible ECON ECONOMIZER ECN P Economizer Act Curr Pos 0 to 100 ECONOPOS ECN C Economizer Act Cmd Pos 0 to 100 ECONOCMD forcible E PWR Economizer Power Relay ON OFF ECON_PWR forcible GEN O GENERAL OUTPUTS ALRM Remote Alarm Aux Relay ON OFF ALRM forcible ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO UNIT UNI...

Page 155: ...ble Disable CSB_A2EN Enable 35 36 110 CS B1 CSB B1 Feedback Alarm Enable Disable CSB_B1EN Enable 35 36 110 CS B2 CSB B2 Feedback Alarm Enable Disable CSB_B2EN Enable 35 36 110 REV R Rev Rotation Verified Yes No REVR_VER No 35 36 106 H SST Hi SST Alert Delay Time 5 to 30 min HSSTTIME 10 35 37 106 OV DB Outdoor VFD SCT DeadBand 0 to 20 dF OV_SCTDB 2 35 OV RH Outdoor VFD Dehum RH SPD 0 to 100 OV_RH 5...

Page 156: ...170 51 53 SW L T Limit Switch Low Temp 100 to 170 dF HT_LIMLO 160 51 53 HT P Heat Control Prop Gain 0 to 1 5 HT_PGAIN 1 51 53 HT D Heat Control Derv Gain 0 to 1 5 HT_DGAIN 1 51 53 HT TM Heat PID Rate Config 60 to 300 sec HTSGPIDR 90 51 53 SP SUPPLY STATIC PRESS CFG SP CF Static Pressure Config 0 to 1 multi text strings STATICFG No 25 57 60 CV FD Constant Vol IDF is VFD Yes No CVIDFVFD No 57 58 SP ...

Page 157: ...Time 10 to 900 sec SAT_SET 240 60 62 BP BUILDING PRESS CONFIG BP CF Building Press Config 0 to 3 BLDG_CFG 0 22 62 64 BP RT Bldg Pres PID Run Rate 5 to 120 sec BPIDRATE 10 62 64 BP P Bldg Press Prop Gain 0 to 5 BLDGP_PG 0 5 62 64 BP I Bldg Press Integ Gain 0 to 2 BLDGP_IG 0 5 63 64 BP D Bldg Press Deriv Gain 0 to 5 BLDGP_DG 0 3 63 64 BP SO BP Setpoint Offset 0 0 to 0 5 H2O BPSO 0 05 63 64 BP MN BP ...

Page 158: ... Min Pos 0 to 100 IAQPLTMP 10 72 73 IQ P H IAQ Purge HiTemp Min Pos 0 to 100 IAQPHTMP 35 72 73 IQ L O IAQ Purge OAT Lockout 35 to 70 dF IAQPNTLO 50 72 73 DEHU DEHUMIDIFICATION CONFIG D SEL Dehumidification Config 0 to 3 multi text strings DHSELECT 0 74 D SEN Dehumidification Sensor 1 to 2 multi text strings DHSENSOR 1 74 D EC D Econ disable in DH mode Yes No DHECDISA Yes 74 D V CF Vent Reheat Setp...

Page 159: ... 10 to 10 F SAT_TRIM 0 79 RAT T RAT Trim 10 to 10 F RAT_TRIM 0 79 OAT T OAT Trim 10 to 10 F OAT_TRIM 0 79 SPT T SPT Trim 10 to 10 F SPT_TRIM 0 79 CTA T Cir A Sat Cond Temp Trim 30 to 30 F SCTATRIM 0 79 CTB T Cir B Sat Cond Temp Trim 30 to 30 F SCTBTRIM 0 79 SP A T Suct Press Circ A Trim 50 to 50 PSIG SPA_TRIM 0 79 SP B T Suct Press Circ B Trim 50 to 50 PSIG SPB_TRIM 0 79 DP A T Dis Press Circ A Tr...

Page 160: ...L_LEN1 82 Repeated for holidays 2 30 DAY S DAYLIGHT SAVINGS TIME DS ST DAYLIGHT SAVINGS START ST MN Month 1 to 12 STARTM 4 82 ST WK Week 1 to 5 STARTW 1 82 ST DY Day 1 to 7 STARTD 7 82 MIN A Minutes to Add 0 to 90 MINADD 60 82 DS SP DAYLIGHTS SAVINGS STOP SP MN Month 1 to 12 STOPM 10 82 SP WK Week 1 to 5 STOPW 5 82 SP DY Day 1 to 7 STOPD 7 82 MIN S Minutes to Subtract 0 to 90 MINSUB 60 82 ITEM EXP...

Page 161: ...A1 Timeguard CMPA1_TG Compressor A2 Relay CMPA2 Compressor A2 Feedback CSB_A2 Compressor A2 Timeguard CMPA2_TG Minimum Load Valve MLV Cir A Discharge Pressure PSIG DP_A Cir A Suction Pressure PSIG SP_A Cir A Sat Condensing Tmp dF SCTA Cir A Sat Suction Temp dF SSTA COOL_B Compressor B1 Relay CMPB1 Compressor B1 Feedback CSB_B1 Compressor B1 Timeguard CMPB1_TG Compressor B2 Relay CMPB2 Compressor B...

Page 162: ... HS2_TG Heat Stage 3 Timeguard HS3_TG Heat Stage 4 Timeguard HS4_TG Heat Stage 5 Timeguard HS5_TG Heat Stage 6 Timeguard HS6_TG HMZR HVAC Mode Ascii text strings Humidimizer Capacity 0 to 100 HMZRCAPC Condenser EXV Position 0 to 100 COND_EXV Bypass EXV Position 0 to 100 BYP_EXV Humidimizer Way Valve On Off HUM3WVAL Cooling Control Point 20 to 140 DF COOLCPNT Evaporator Discharge Tmp 40 to 240 DF E...

Page 163: ...1 Input On Off Y1 forcible Thermostat Y2 Input On Off Y2 forcible Thermostat W1 Input On Off W1 forcible Thermostat W2 Input On Off W2 forcible Thermostat G Input On Off G forcible UINPUTS Filter Status Input Dirty Clean FLTS forcible Fan request from IGC On Off IGCFAN Fire Shutdown Switch Alarm Normal FSD forcible Thermostat G Input On Off G forcible Thermostat W2 Input On Off W2 forcible Thermos...

Page 164: ...V Bypass EXV Position BYP_EXV HEATING Heat Relay 1 On Off HS1 Heat Relay 2 On Off HS2 Relay 3 W1 Gas Valve 2 On Off HS3 Relay 4 W2 Gas Valve 2 On Off HS4 Relay 5 W1 Gas Valve 3 On Off HS5 Relay 6 W2 Gas Valve 3 On Off HS6 Heat Interlock Relay On Off HIR forcible ECONOMIZER Economizer Act Curr Pos 0 to 100 ECONOPOS Economizer Act Cmd Pos 0 to 100 ECONOCMD forcible Economizer Power Relay On Off ECON...

Page 165: ...s Rooftop Location Software Part Number CESR131343 XX XX Model Number Serial Number Reference Number HOLIDAY Broadcast Supervisory HOLDY01S Holiday Start Month 1 to 12 HOL MON 0 to Start Day 1 to 31 HOL DAY 0 HOLDY30S Duration days 1 to 99 HOL LEN 0 OCCDEFCS Occupancy Supervisory Timed Override Hours 0 OVR EXT Period 1 DOW MTWTFSSH 00000000 DOW1 Occupied From 0 00 OCCTOD1 Occupied To 0 00 UNOCTOD1...

Page 166: ... a Global Sched Override Yes No GLBLOVER No SET_PNT Occupied Heat Setpoint 55 to 80 dF OHSP 68 Occupied Cool Setpoint 55 to 80 dF OCSP 75 Unoccupied Heat Setpoint 40 to 80 dF UHSP 55 Unoccupied Cool Setpoint 75 to 95 dF UCSP 90 Heat Cool Setpoint Gap 2 to 10 F HCSP_GAP 5 VAV Occ Cool On Delta 0 to 25 F VAVOCON 3 5 VAV Occ Cool Off Delta 1 to 25 F VAVOCOFF 2 Supply Air Setpoint 45 to 75 dF SASP 55 ...

Page 167: ...dulating PE Alg Slct 1 to 3 BPSELECT 1 BP PID Evaluation Time 0 to 10 min BPPERIOD 1 BP Threshold Adjustment 0 1 to 10 BPZ_GAIN 1 High BP Level 0 to 1 BPHPLVL 0 05 Low BP Level 0 to 1 BPLPLVL 0 04 COOL Capacity Threshold Adjust 10 to 10 Z_GAIN 1 Compressor Lockout Temp 20 to 55 dF OATLCOMP 40 Fan off Delay Mech Cool 0 to 600 sec COOL_FOD 60 Minimum Load Valve HGBP Yes No MLV_SEL No Motor Master Co...

Page 168: ...age Selection 0 to 1 LANGUAGE 0 Password Enable Enable Disable PASS_EBL Enable Service Password 0000 to 9999 PASSWORD 1111 Contrast Adjustment 255 to 255 CNTR_ADJ 0 Brightness Adjustment 255 to 255 BRTS_ADJ 0 DLVT Dmd Level Lo Heat On 1 to 2 F DMDLHON 1 5 Dmd Level Hi Heat On 0 5 to 20 0 F DMDHHON 0 5 Dmd Level Lo Heat Off 0 5 to 2 F DMDLHOFF 1 Dmd Level Lo Cool On 1 to 2 F DMDLCON 1 5 Dmd Level H...

Page 169: ...Q_LOW 100 Diff Air Quality HiLimit 100 to 2000 DAQ_HIGH 700 DAQ PPM Fan Off Setpoint 0 to 2000 DAQFNOFF 200 DAQ PPM Fan On Setpoint 0 to 2000 DAQFNON 400 Diff AQ Responsiveness 5 to 5 IAQREACT 0 OAQ Lockout Value 0 to 2000 OAQLOCK 0 User determined OAQ 0 to 5000 OAQ_USER 400 IAQ Low Reference 0 to 5000 IAQREFL 0 IAQ High Reference 0 to 5000 IAQREFH 2000 OAQ Low Reference 0 to 5000 OAQREFL 0 OAQ Hi...

Page 170: ...inimum Speed 10 to 50 STATPMIN 20 VFD Maximum Speed 50 to 100 STATPMAX 100 VFD Fire Speed Override 0 to 100 STATPFSO 100 VFD Heating Min Speed 75 to 100 VFDHTMIN 75 Stat Pres Reset Config 0 to 4 multi text strings SPRSTCFG 0 SP Reset Ratio dF 0 to 2 00 SPRRATIO 0 2 SP Reset Limit in iwc 0 to 2 00 SPRLIMIT 0 75 SP Reset Econo Position 0 to 100 ECONOSPR 5 Stat Pres PID Run Rate 1 to 200 sec SPIDRATE...

Page 171: ...LL No Auxiliary Relay Config 0 to 3 AUXRELAY 0 Space Temp Sensor Enable Disable SPTSENS Disable Space Temp Offset Sensor Enable Disable SPTOSENS Disable Space Temp Offset Range 1 to 10 F SPTO_RNG 5 Return Air RH Sensor Enable Disable RARHSENS Disable Filter Stat Sw Enabled Enable Disable FLTS_ENA Disable GENERICS POINT_01 Definition 8 CHAR ASCII POINT_01 POINT_02 Definition 8 CHAR ASCII POINT_02 P...

Page 172: ...3 DMD_CTRL config Demand Limit Switch 1 On Off DMD_SW1 forcible Demand Limit Switch 2 On Off DMD_SW2 forcible Demand Limit Sw 1 Setpt 0 to 100 DLSWSP1 config Demand Limit Sw 2 Setpt 0 to 100 DLSWSP2 config 4 20 ma Demand Signal 4 to 20 ma DMDLMTMA forcible Demand Limit at 20 ma 0 to 100 DMT20MA config CCN Loadshed Signal 0 to 99 DL_STAT Loadshed Group Number 0 to 99 SHED_NUM config Loadshed Demand...

Page 173: ...omizer Control Point dF ECONCPNT EDT Trend in degF minute F EDTTREND Economizer Prop Gain EC_PGAIN config Economizer Range Adjust F EC_RANGE config Economizer Speed Adjust EC_SPEED config Economizer Deadband F EC_DBAND config Economizer Timer sec ERATETMR config T24_DIAG Economizer Installed Yes No ECON_ENA config Return Air Temperature dF RAT forcible Air Temp Lvg Supply Fan dF SAT Outside Air Te...

Page 174: ...nStartSpeed Forced Ena OVST_FRC GSOUTPUT ODF_VFD A Actual Speed 0 to 100 OVA_SPD ODF_VFD B Actual Speed 0 to 100 OVB_SPD Outdoor VFD A Ctrl Cmd OV_A Outdoor VFD B Ctrl Cmd OV_B Outdoor VFD A App Req OV_A_ARQ Outdoor VFD B App Req OV_B_ARQ Outdoor VFD A Ctrl Cmd OV_A_TST Outdoor VFD B Ctrl Cmd OV_B_TST Outdoor VFD SP Circuit A degF OV_A_SP Outdoor VFD SP Circuit B degF OV_B_SP Outdoor VFD A State N...

Page 175: ...ono Damper Current Pos ECONOPOS Power Exhaust Stage A PE_A Power Exhaust Stage B PE_B Power Exhaust Stage C PE_C BP Load Factor BPSMZ BP Rise Per Stage BPRISE BP PID Integral Term BPINT config BP PID Threshold BPZ config BP Deadband BPY config Building Pressure Error BPERROR config Rate of Chng of BPERROR BPRATE config High BP Override BPHPOVRD config Low BP Override BPLPOVRD config PRESDUCT Stati...

Page 176: ...M AN3 4 20 ma J5 5 6 0 to 20 ma CEM4203 forcible CEM AN4 4 20 ma J5 7 8 0 to 20 ma CEM4204 forcible TESTCOOL Compressor A1 Relay ON OFF CMPA1TST test Compressor A2 Relay ON OFF CMPA2TST test Min Load Valve HGBP ON OFF MLV_TST test Compressor B1 Relay ON OFF CMPB1TST test Compressor B2 Relay ON OFF CMPB2TST test Digital Scroll Capacity 0 to 100 DSCAPTST test Humidimizer 3 Way Valve ON OFF RHVC_TST ...

Page 177: ...IR_TST test Remote Alarm Aux Relay ON OFF ALRM_TST test VERSIONS MBB CESR131343 ascii version MBB_SW ECB1 CESR131249 ascii version ECB1_SW ECB2 CESR131465 ascii version ECB2_SW SCB CESR131226 ascii version SCB_SW CEM CESR131174 ascii version CEM_SW SCB2 CESR131226 ascii version SCB2_SW MARQUEE CESR131171 ascii version MARQ_SW NAVIGATOR CESR130227 ascii version NAVI_SW DAY FLAGS MTWTFSSH OCCUPIED T...

Page 178: ...D Configurations TERMINAL FUNCTION U1 V1 W1 Three Phase Main Circuit Input Power Supply U2 V2 Three Phase AC Output to Motor 0 V to W2 Maximum Input Voltage Level X1 11 GND X1 12 COMMON Factory supplied jumper X1 10 24 VDC X1 13 DI 1 Run factory supplied jumper X1 10 24 VDC Start Enable 1 Factory supplied jumper When X1 16 DI 4 opened the drive goes to emergency stop X1 2 AI 1 X1 3 AGND Factory wi...

Page 179: ...eters Drive Parameter Backup mode stores or uploads the parameters Clock Set mode sets the time and date for the drive I O Settings mode checks and edits the I O settings STANDARD DISPLAY MODE Use the standard display mode to read information on the drive status and operate the drive To reach the standard display mode press EXIT until the LCD display shows status informa tion as described below Se...

Page 180: ...ntrol panel from the VFD perform the following procedure 1 Select MENU SOFT KEY 2 The Main menu will be displayed 2 Use the UP or DOWN keys to highlight PAR BACKUP on the display screen and press ENTER SOFT KEY 2 3 Use the UP or DOWN keys to highlight UPLOAD TO PAN EL and press SEL SOFT KEY 2 4 The text Copying Parameters will be displayed with a progress indicator To stop the process select ABORT...

Page 181: ... error situations and reports them using the green and red LEDs on the body of the drive located under the keypad the status LED on the control panel the control panel display the Fault Word and Alarm Word parameter bits parame ters 0305 to 0309 The form of the display depends on the severity of the error The user can specify the severity for many errors by directing the drive to ignore the error ...

Page 182: ...02 MAXIMUM SPEED parameters Check parameter settings for 2001 and 2002 Check adequacy of motor braking torque Check applicability of torque control Check brake chopper and resistor 25 RESERVED Not used 26 DRIVE ID Internal fault Configuration block drive ID is not valid 27 CONFIG FILE Internal configuration file has an error Contact Carrier 28 SERIAL 1 ERR Field bus communication has timed out Che...

Page 183: ...is less than the minimum setting Check input source and connections Check parameter that sets the minimum 3022 and the parameter that sets the Alarm Fault operation 3001 2008 PANEL LOSS Panel communication is lost and either the VFD is in local control mode the control panel displays HAND or the VFD is in remote control mode AUTO and is parameterized to accept start stop direction or reference fro...

Page 184: ...r from drive 2 Remove the front cover 3 The housing that holds the fan in place has barbed retaining clips at each corner Press all four clips toward the center to release the barbs 4 When the clips barbs are free pull the housing up to remove from the drive 5 Disconnect the fan cable 6 Install the fan in reverse order noting the following the fan airflow is up refer to arrow on fan the fan wire h...

Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...

Page 186: ...ting cooling HVAC modes HVAC mode Off The unit is off and no operating modes are active HVAC mode Tempering Vent The economizer is at minimum vent position but the supply air temperature has dropped below the tempering vent setpoint Gas heat is used to temper the ventilation air HVAC mode Tempering LoCool The economizer is at minimum vent position but the combination of the outside air temperature...

Page 187: ... the arrow on the Ones 1 s switch to 5 BACNET DEVICE INSTANCE ADDRESS The UPC Open controller also has a BACnet Device Instance address This Device Instance MUST be unique for the com plete BACnet system in which the UPC Open controller is in stalled The Device Instance is auto generated by default and is derived by adding the MAC address to the end of the Network Number The Network Number of a ne...

Page 188: ...ontroller communicates using BACnet on an MS TP network segment communications at 9600 bps 19 2 kbps 38 4 kbps or 76 8 kbps Wire the controllers on an MS TP network segment in a daisy chain configuration Wire specifications for the cable are 22 AWG American Wire Gage or 24 AWG low capacitance twisted stranded shielded copper wire The maximum length is 2000 ft Install a BT485 terminator on the firs...

Page 189: ...demark of Solvay Plastics 2 SmokeGard is a trademark of AlphaGary Mexichem Corp SPECIFICATION RECOMMMENDATION Cable Single twisted pair low capacitance CL2P 22 AWG 7x30 TC foam FEP plenum rated cable Conductor 22 or 24 AWG stranded copper tin plated Insulation Foamed FEP 0 015 in 0 381 mm wall 0 060 in 1 524 mm O D Color code Black White Twist Lay 2 in 50 8 mm lay on pair 6 twists foot 20 twists m...

Page 190: ...tallation and User Guide for instructions on connecting and using the BACview6 device To order a BACview6 Handheld BV6H consult Commercial Products i Vu Open Control System Master Prices WIRING SPECIFICATIONS RECOMMENDED VENDORS AND PART NUMBERS Wire Type Description Connect Air International Belden RMCORP Contractors Wire and Cable MS TP Network RS 485 22 AWG single twisted shielded pair low capa...

Page 191: ...0 hours of data retention during power outages Remove the battery from the controller making note of the bat tery s polarity Insert the new battery matching the battery s po larity with the polarity indicated on the UPC Open controller Table J LED Status Indicators Table K Run and Error LEDs Controller and Network Status Indication IMPORTANT Power must be ON to the UPC Open when replacing the batt...

Page 192: ...TEMP R W F 40 to 240 space_temp_1 AV 2007 COOLING CONTROL POINT R F cool_ctrl_point_1 AV 1024 COOLING OCCUPIED SETPOINT R W F 40 to 99 occ_cl_stpt_1 AV 3001 COOLING UNOCCUPIED SETPOINT R W F 40 to 99 unocc_cl_stpt_1 AV 3003 CTL TEMP RAT SPT OR ZONE PRIME VARIABLE R F ctrltemp_1 AV 43 CURRENT RUNNING CAPACITY R cool_capacity_1 AV 1023 CURRENT RUNNING CAPACITY R htsg_cap_1 AV 44 DEHUMIDIFY COOL SETP...

Page 193: ...T 3 R F lat3sgas_1 AV 152 STATIC PRESSURE R H2O static_press_1 AV 1016 STATIC PRESSURE RESET R W no unit 0 to 15 spreset_1 AV 157 STATIC PRESSURE SETPOINT R W H2O 0 to 5 sa_static_stpt_1 AV 3050 SUPPLY AIR RESET R 0 OFF 1 ON modesars_1 BV 93 SUPPLY AIR SETPNT RESET R W F 0 to 20 sasprset_1 AV 158 SUPPLY AIR SETPOINT R W F 45 to 75 sa_temp_stpt_1 AV 3007 SUPPLY FAN RELAY R 0 OFF 1 ON sfan_rly_1 BV ...

Page 194: ...user_analog_20_1 AV 2920 SETPOINT ADJUSTMENT ENABLE R W 0 DISABLE 1 ENABLE stpt_adj_enable_1 BV 6 ZS CO2 SENSOR VALID STATUS R 0 N A 1 VALID CONNECTED zs_co2_valid_1 BV 203 ZS TEMP SENSOR VALID STATUS R 0 N A 1 VALID CONNECTED zs_sen_valid_1 BV 201 ZS THERMOSTAT CONFIG ALARM R 0 NORMAL 1 ALARM zs_sen_alm_1 BV 200 USER DEFINED BINARY 1 R W 0 OFF 1 ON user_binary_1_1 BV 2911 USER DEFINED BINARY 2 R ...

Page 195: ... AV 3054 CONTROLLING STATIC PRESSURE SETPOINT R inH2O ct_sa_static_stpt_1 AV 3055 STATIC PRESSURE RESET ENABLE R W 0 DISABLE 1 ENABLE st_pr_rst_en_1 BV 3051 APPENDIX E UPC OPEN CONTROLLER cont NETWORK POINTS LIST CONT NAME READ WRITE UNITS RANGE OBJECT NAME OBJECT ID BP Building Pressure CEM Controls Expansion Module DAQ Differential Air Quality DBC Dry Bulb Changeover DCV Demand Controlled Ventil...

Page 196: ...condensing tem peratures SCTs as the feedback information to the condenser fans also referred to as outdoor fans SCT A is the saturated condensing temperature for refrigeration Circuit A and SCT B is the saturated condensing temperature for refrigeration Cir cuit B There are a total of up to 6 condenser fans depending on unit size and installed options for controlling the head pres sures of the 2 ...

Page 197: ...197 APPENDIX F OPTIONAL FACTORY INSTALLED LOW AMBIENT MOTORMASTER V CONTROL cont Fig N Low Ambient MMV Control Location 48 50A040 050 Units ...

Page 198: ...198 APPENDIX F OPTIONAL FACTORY INSTALLED LOW AMBIENT MOTORMASTER V CONTROL cont Fig O Low Ambient MMV Control Location 48 50A060 RTPF Units ...

Page 199: ... test mode run compressor no 1 The Motormaster V electronic control adjusts the fan speed based on the liquid line pressure input Ensure that fans are rotating clockwise as viewed from above If rotation is backward lock out all power then swap 2 leads AFTER the Motormaster V control For 48 50A2 A3 A4 A5 units fan stages react to discharge pressure transducers DPT Pressures REF P DP A and DP B whic...

Page 200: ... default of 1 0 Motormaster Integration Time MM TI MM_TI This is the integration time constant for the Motor master control PD control loop This value will have a range of 0 5 to 50 and default of 30 Motormaster Setpoint MM SP MM_SP If the unit is configured for Motormaster control then this is the setpoint to which the ComfortLink PD routine will mod ulate VFD fan speed The Motormaster setpoint i...

Page 201: ...ntil the condition is repaired regardless of the OAT and SCT values START UP The Motormaster V electronic control will be powered up as long as unit voltage is present When the system calls for cool ing the Motormaster relay MMR will be energized to initiate the start up sequence for the Motormaster V electronic control The LED light emitting diode will display the speed of the motor The display r...

Page 202: ...P and DOWN buttons and then storing the value by press ing MODE 5 Press MODE again to re display the value of P48 6 Change the value of P48 to the desired factory default mode using UP and DOWN buttons then press MODE The Mo tormaster V control is now restored to factory settings Fig Q Low Ambient Motormaster V Wiring 48 50A020 060 Units Shown ...

Page 203: ...AGE in percent of rated output voltage P54 LOAD in percent of drives rated output current P55 VDC INPUT in percent of maximum input 100 will indicate full scale which is 5 v P56 4 20 mA INPUT in percent of maximum input 20 4 mA 100 20 mA NOTE The Motormaster V transducer is attached to circuit A If circuit A compressor power is interrupted overload high pressure cutout etc the outdoor fans will op...

Page 204: ... 50 Hz 60 60 50 P28 Fixed boost 0 5 at low frequencies 0 5 0 5 0 5 P29 Accel boost 0 0 0 0 P30 Slip compensation 0 0 0 0 P31 Preset spd 1 speed if loss of control signal 57 57 47 P32 Preset spd 2 0 0 0 0 P33 Preset spd 3 0 0 0 0 P34 Preset spd 4 default R22 and R410A setpoints TB12 2 open 24 24 24 P35 Preset spd 5 default R134a setpoint TB12 2 closed 12 6 12 6 12 6 P36 Preset spd 6 default 0 0 0 P...

Page 205: ...arameter version of the EPM to match the parameter version of the drive F1 EPM Fault Manual The EPM is missing or damaged Install EPM or replace with new EPM F2 F9 Fo Internal Faults Manual The control board has sensed a problem Consult factory GF Data Fault Manual User data and Carrier defaults in the EPM are corrupted Restore factory defaults by tog gling P48 to another mode Then set P48 to desi...

Page 206: ...of circuit A and circuit B within acceptable ranges For controls purpose the head pressures are converted to saturated condensing temperatures SCTs as the feedback information to the condenser fans also re ferred to as outdoor fans SCT A is the saturated condensing temperature for refrigeration Circuit A and SCT B is the saturated condensing temperature for refrigeration Circuit B There are a to t...

Page 207: ...207 APPENDIX G OPTIONAL GREENSPEED LOW AMBIENT CONTROL cont Fig S Greenspeed Low Ambient VFD Control Location 48 50A040 050 Units ...

Page 208: ...hannel MCHX condenser heat exchangers are the only units that utilize independent fan controls There are configurations provided for head pressure and low ambient control that can be found at the local display under Configuration COOL Greenspeed Low Ambient OV OUTDOOR_VFD The condenser fan staging control for the unit will be managed directly by the ComfortLink controls through the use of VFDs The...

Page 209: ... circuits The control cycles two stages of outdoor fans two fans per stage to maintain ac ceptable head pressure For 48 50A060 size units there are six outdoor fans that are common to both refrigerant circuits size 060 MCHX units have 4 fans 2 on each circuit The control cycles three stages of out door fans two fans for stage one four fans for stage two and six fans for stage three to maintain acc...

Page 210: ...60Hz 60Hz 60Hz 60Hz 60Hz 60Hz N RPM 9908 850 850 850 850 850 850 N HP 9909 5 5 5 5 5 5 EXT1 COMMANDS 1001 DI1 1 DI1 1 DI1 1 DI1 1 DI1 1 DI1 1 DIRECTION 1003 Forward 1 Forward 1 Forward 1 Forward 1 Forward 1 Forward 1 REF1 SELECT 1103 COMM 8 COMM 8 COMM 8 COMM 8 COMM 8 COMM 8 CONST SPEED SEL 1201 NOT SEL NOT SEL NOT SEL NOT SEL NOT SEL NOT SEL CONST SPEED 7 1208 0 Hz 0 Hz 0 Hz 0 Hz 0 Hz 0 Hz RELAY ...

Page 211: ... 1401 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 RELAY OUTPUT2 1402 Run 2 Run 2 Run 2 Run 2 Run 2 Run 2 RELAY OUT 3 1403 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 RUN ENABLE 1601 0 0 0 0 0 0 START ENABLE 1 1608 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 Parameter View 1611 3 3 3 3 3 3 MAX AMPS 2003 13 0 20 5 10 2 10 2 10 2 15 2 MIN FREQ 2007 0Hz 0Hz 0Hz 0Hz 0Hz 0Hz MAX FREQ 2008 60Hz 60Hz 60Hz...

Page 212: ...EL NOT SEL NOT SEL CONST SPEED 7 0 Hz 0 Hz 0 Hz 0 Hz RELAY OUT 1 Ready 1 Ready 1 Ready 1 Ready 1 RELAY OUTPUT2 Run 2 Run 2 Run 2 Run 2 RELAY OUT 3 FAULT 1 FAULT 1 FAULT 1 FAULT 1 RUN ENABLE 0 0 0 0 START ENABLE 1 DI4 4 DI4 4 DI4 4 DI4 4 Parameter View 3 3 3 3 MAX AMPS 8 4 8 4 8 1 12 6 MIN FREQ 0Hz 0Hz 0Hz 0Hz MAX FREQ 60Hz 60Hz 60Hz 60Hz SWITCH FREQ 4kHz 4kHz 4kHz 4kHz START FCN Auto Auto Auto Aut...

Page 213: ...T 1 1401 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 RELAY OUTPUT2 1402 Run 2 Run 2 Run 2 Run 2 Run 2 Run 2 RELAY OUT 3 1403 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 RUN ENABLE 1601 0 0 0 0 0 0 START ENABLE 1 1608 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 Parameter View 1611 3 3 3 3 3 3 MAX AMPS 2003 22 4 22 4 20 3 33 6 18 2 18 2 MIN FREQ 2007 0Hz 0Hz 0Hz 0Hz 0Hz 0Hz MAX FREQ 2008 60Hz 60Hz 6...

Page 214: ...T 1 1401 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 Ready 1 RELAY OUTPUT2 1402 Run 2 Run 2 Run 2 Run 2 Run 2 Run 2 RELAY OUT 3 1403 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 FAULT 1 RUN ENABLE 1601 0 0 0 0 0 0 START ENABLE 1 1608 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 DI4 4 Parameter View 1611 3 3 3 3 3 3 MAX AMPS 2003 13 0 27 3 11 2 11 2 10 2 16 8 MIN FREQ 2007 0Hz 0Hz 0Hz 0Hz 0Hz 0Hz MAX FREQ 2008 60Hz 60Hz 6...

Page 215: ...umber of Motors 2 2 2 3 LANGUAGE English 0 English 0 English 0 English 0 APPLIC MACRO HVAC 1 HVAC 1 HVAC 1 HVAC 1 MOTOR CTRL MODE SCALAR FREQ SCALAR FREQ SCALAR FREQ SCALAR FREQ VOLTAGE 575 575 575 575 N AMPS 5 2 5 2 4 6 7 8 MOTOR NOM FREQ 60Hz 60Hz 60Hz 60Hz N RPM 1150 1150 850 1150 N HP 5 5 5 7 5 EXT1 COMMANDS DI1 1 DI1 1 DI1 1 DI1 1 DIRECTION Forward 1 Forward 1 Forward 1 Forward 1 REF1 SELECT ...

Page 216: ...T SOFT KEY 2 5 Use the UP or DOWN keys to change the value of the pa rameter 6 Press SAVE SOFT KEY 2 to store the modified value Press CANCEL SOFT KEY 1 to keep the previous value Any modifications that are not saved will not be changed 7 Choose another parameter or press EXIT SOFT KEY 1 to return to the listing of parameter groups Continue until all the parameters have been configured and then pr...

Page 217: ...and press SEL SOFT KEY 2 Use the UP or DOWN keys to change the hours and minutes Press OK SOFT KEY 2 to save the configuration and return to the Clock Set menu 5 Use the UP or DOWN keys to highlight TIME FORMAT and press SEL SOFT KEY 2 Use the UP or DOWN keys to change the parameter setting Press OK SOFT KEY 2 to save the configuration and return to the Clock Set menu 6 Use the UP or DOWN keys to ...

Page 218: ... involve dis patching a designated service station DSS representative from an authorized station dispatching a replacement unit or advising return for repair CONTROL PANEL CLEANING Use a soft damp cloth to clean the control panel Avoid harsh cleaners which could scratch the display window BATTERY REPLACEMENT A battery is only used in assistant control panels that have the clock function available ...

Page 219: ...M SPEED or 2002 MAXIMUM SPEED parameters Check parame ter settings for 2001 and 2002 Check adequacy of motor braking torque Check applicability of torque control Check brake chopper and resistor 25 RESERVED Not used 26 DRIVE ID Internal fault Configuration block drive ID is not valid 27 CONFIG FILE Internal configuration file has an error Contact Carrier 28 SERIAL 1 ERR Field bus communication has...

Page 220: ... the communication lines and connections Parameter 3002 PANEL LOSS and parameters in groups 10 COMMAND INPUTS and 11 REFERENCE SELECT if drive operation is REM 2009 Reserved 2010 MOT OVERTEMP Motor is hot based on either the VFD estimate or on temperature feedback This alarm warns that a Motor Overload fault trip may be near Check for overloaded motor Adjust the parameters used for the estimate 30...

Page 221: ... blade screwdriver into the slot and press in to release the top cover as shown in Fig Y 3 Blow clean compressed air not humid from top of ASC320 while simultaneously using a vacuum cleaner at the base to trap the dust 4 Replace the top cover 5 Restore power Fig W Remove ACH550 VFD Front Cover Fig X Remove Top Cover on ACH550 VFD Fig Y Remove Top Cover on ASC320 VFD Captive Screw 3 3 2 ...

Page 222: ...p 52 Heat mode selection process 51 Heating 24 Heating control 50 Humidi MiZer 24 75 Troubleshooting 84 Hot gas bypass 81 HVAC modes 28 Independent outputs 24 Indoor air quality control 69 Indoor air quality options 22 Internal wiring 7 Local display tables 150 160 Low ambient Motormaster control 196 205 Lubrication 139 Main burners 149 Major system components 110 136 Mode selection 186 Mode trip ...

Page 223: ... feet 0 to 60000 0 DLAY Startup Delay Time 0 to 900 sec 0 STAT TSTAT_Both Heat and Cool Yes No No AUX R Auxiliary Relay Config 0 to 3 0 SENS INPUT SENSOR CONFIG SPT S Space Temp Sensor Enable Disable Disable SP O S Space Temp Offset Sensor Enable Disable Disable SP O R Space Temp Offset Range 1 to 10 5 RRH S Return Air RH Sensor Enable Disable Disable FLT S Filter Stat Sw Enabled Enable Disable Di...

Page 224: ... to 600 30 SG CF STAGED GAS CONFIGS HT ST Staged Gas Heat Type 0 to 4 0 CAP M Max Cap Change per Cycle 5 to 45 45 M R DB S Gas DB min dF PID Rate 0 to 5 0 5 S G DB St Gas Temp Dead Band 0 to 5 F 2 RISE Heat Rise dF sec Clamp 0 05 to 0 2 0 06 LAT L LAT Limit Config 0 to 20 F 10 LIM M Limit Switch Monitoring Yes No No SW H T Limit Switch High Temp 110 to 180 dF 170 SW L T Limit Switch Low Temp 100 t...

Page 225: ...ool Cfg 0 to 2 multi text strings 0 FC TM Unoc Econ Free Cool Time 0 to 720 min 120 FC L O Un Ec Free Cool OAT Lock 40 to 70 dF 50 T 24 C TITLE 24 FDD LOG F Log Title 24 Faults Yes No No EC MD T24 Econ Move Detect 1 to 10 dF 1 EC ST T24 Econ Move SAT Test 10 to 20 10 S CHG T24 Econ Move SAT Change 0 to 5 dF 0 2 E SOD T24 Econ RAT OAT Diff 5 to 20 dF 15 E CHD T24 Heat Cool End Delay 0 to 60 min 25 ...

Page 226: ...POINTS IQ O P IAQ Econ Override Pos 0 to 100 100 DAQ L Diff Air Quality LoLimit 0 to 1000 100 DAQ H Diff Air Quality HiLimit 100 to 2000 700 D F OF DAQ PPM Fan Off Setpoint 0 to 2000 200 D F ON DAQ PPM Fan On Setpoint 0 to 2000 400 IAQ R Diff AQ Responsiveness 5 to 5 0 OAQ L OAQ Lockout Value 0 to 2000 0 OAQ U User Determined OAQ 0 to 5000 400 AQ S R AIR QUALITY SENSOR RANGE IQ R L IAQ Low Referen...

Page 227: ...0 R RH H RARH high alert limit 0 to 100 100 SP L SP low alert limit 0 to 5 H2O 0 SP H SP high alert limit 0 to 5 H2O 2 BP L BP lo alert limit 0 25 0 25 H2O 0 25 BP H BP high alert limit 0 25 0 25 H2O 0 25 IAQ H IAQ high alert limit 0 to 5000 1200 TRIM SENSOR TRIM CONFIG SAT T Air Temp Lvg SF Trim 10 to 10 F 0 RAT T RAT Trim 10 to 10 F 0 OAT T OAT Trim 10 to 10 F 0 SPT T SPT Trim 10 to 10 F 0 CTA T...

Page 228: ...to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480239 01 Printed in U S A Form 48 50A 14T Pg 228 6 19A 5 19 Replaces 48 50A 13T Carrier Corporation 2019 ...

Page 229: ...N AND IN PLACE VERIFY THAT UNIT IS LEVEL WITHIN TOLERANCES FOR PROPER CONDENSATE DRAINAGE CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING ORIFICE AND SETSCREW IS TIGHT VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED VERIFY THAT SUCTION DISCHARGE AND LIQUID SERVICE VALVES ON EACH CIRCUITARE OPEN VERIFY THAT CRANKCASE HEATERS HAVE BEEN ON 24 HOURS BEFORE START UP START U...

Page 230: ...A 5 19 Replaces 48 50A 13T Carrier Corporation 2019 CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE PRESSURES GAS INLET PRESSURE __________ IN WG 48A ONLY GAS MANIFOLD PRESSURE STAGE NO 1 ___________IN WG STAGE NO 2 __________IN WG 48A ONLY REFRIGERANT SUCTION CIRCUIT NO 1 __________PSIG CIRCUIT NO 2__________ PSIG REFRIGERANT DISCHARGE CIRCUIT NO 2 __________ PSIG CIRCUIT NO 2__________ PSIG VERIFY R...

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