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United Technologies Carrier Weathermaker 48A2 Controls, Start-Up, Operation, Service, And Troubleshooting

Single package large rooftop units with comfortlink version 8.x controls
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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
System Pilot™ Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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
or Space Temperature Sensor. . . . . . . . . . . . . . . . . . . .21
Mechanical Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . .21
Multi-Stage Constant Volume Units with
Space Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Economizer Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Indoor Air Quality Options. . . . . . . . . . . . . . . . . . . . . . . . . .22
Exhaust Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Programming Operating Schedules . . . . . . . . . . . . . . . .22
SERVICE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Service Test Mode Logic . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Independent Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Fans in Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . .23
Cooling in Service Test Mode . . . . . . . . . . . . . . . . . . . . . .23
Heating in Service Test Mode. . . . . . . . . . . . . . . . . . . . . . .23
®
System . . . . . . . . . . . . . . . . . . . . . . . . . . 23
THIRD PARTY CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Remote Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
VFD Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Supply Air Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Demand Limit Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Demand Controlled Ventilation Control. . . . . . . . . . . . .26
CONTROLS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Unit Configuration Submenu . . . . . . . . . . . . . . . . . . . . . . .30
Cooling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
• SETPOINTS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480166-01
Single Package Large Rooftop Units
with ComfortLink Version 8.x Controls
CONTENTS
Page
Printed in U.S.A.
Form 48/50A-13T
48/50A2,A3,A4,A5020-060
Heating Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
• SETTING UP THE SYSTEM
• HEAT MODE SELECTION PROCESS
• RELOCATE SAT SENSOR FOR HEATING IN
LINKAGE APPLICATIONS
Static Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
• OPERATION
Fan Status Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• GENERAL
Dirty Filter Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
DIAGNOSTICS (FDD) CONTROL
• ECONOMIZER OPERATION CONFIGURATION
• ECONOMIZER DIAGNOSTIC HELP
Building Pressure Control. . . . . . . . . . . . . . . . . . . . . . . . . . 62
OPERATION
Smoke Control Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Indoor Air Quality Control . . . . . . . . . . . . . . . . . . . . . . . . . . 65
• OPERATION
• SETTING UP THE SYSTEM
Pg 1
Weathermaker
2-18
Replaces: 48/50A-12T
®
Page

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Summary of Contents for United Technologies Carrier Weathermaker 48A2

  • Page 1: Table Of Contents

    ® Weathermaker 48/50A2,A3,A4,A5020-060 Single Package Large Rooftop Units with ComfortLink Version 8.x Controls Controls, Start-Up, Operation, Service and Troubleshooting CONTENTS Page Page SAFETY CONSIDERATIONS ......2 •...

  • Page 2: Safety Considerations

    CONTENTS (cont) SAFETY CONSIDERATIONS Installation and servicing of air-conditioning equipment can Page be hazardous due to system pressure and electrical compo- Dehumidification and Reheat ..... . 69 nents.

  • Page 3: General

    configuration settings and 8 time of day schedules. The MBB also performs self diagnostic tests at unit start-up, monitors the WARNING operation of the unit, and provides alarms and alert information. The system also contains other optional boards that are con- DO NOT USE TORCH to remove any component.

  • Page 4: Basic Control Usage

    The CCN point names are also referenced in the local indicate the following menu structures, referred to as modes display tables for users configuring the unit with CCN software (see Appendix A): instead of the local display. The CCN tables are located in •...

  • Page 5: Operation

    will be displayed with a blinking “f” following its value. For All units are shipped from the factory with Operation — the scrolling marquee display, which is located in the main con- example, if supply fan requested (FAN.F) is forced, the display trol box.
  • Page 6 Table 2 — Scrolling Marquee Menu Display Structure (ComfortLink Display Modes) SERVICE TIME OPERATING TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION ALARMS STATUS TEST CLOCK MODES Auto View of Service Test Mode Air Pressures Occupied Heat General Inputs Fans Unit Time of Day System Currently Run Status...

  • Page 7: Start-Up

    GENERICS STATUS DISPLAY TABLE — The GENERICS Crankcase heaters are energized Crankcase Heaters — points table allows the service/installer the ability to create a as long as there is power to the unit, except when the custom table in which up to 20 points from the 5 CCN compressors are running.
  • Page 8 Table 3 — Fan Performance — 48A2,A3020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (CFM) 4,000 0.62 0.84 1.07 1.30 1.54 1.78 2.02 2.27 2.51 2.76 5,000 0.97 1.19 1.43 1.69 1.95 2.21 2.48 2.74 3.01 3.28 6,000 1.43 1.65 1.90 2.17...
  • Page 9 Table 5 — Fan Performance — 48A2,A3035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 7,000 2.46 2.80 3.13 3.48 3.82 4.16 4.50 4.83 5.17 5.49 8,000 3.27 3.63 3.99 4.35 4.72 5.08 5.45 5.81 6.18 6.54 9,000 4.23 4.62 5.00 5.38...
  • Page 10 Table 7 — Fan Performance — 48A2,A3050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 8,000 2.98 3.38 3.79 4.20 4.62 5.05 5.49 5.94 6.40 6.86 9,000 3.90 4.33 4.77 5.20 5.65 6.10 6.55 7.02 7.49 7.97 10,000 5.00 5.45 5.91 6.37...
  • Page 11 Table 9 — Fan Performance — 50A2,A3020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (CFM) 4,000 0.54 0.71 0.88 1.05 1.21 1.38 1.55 1.71 1.88 2.04 5,000 0.84 1.02 1.21 1.40 1.59 1.78 1.97 2.16 2.34 2.52 6,000 1.25 1.43 1.63 1.84...
  • Page 12 Table 11 — Fan Performance — 50A2,A3035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 7,000 1.96 2.22 2.47 2.72 2.97 3.22 3.46 3.70 3.94 4.17 8,000 2.62 2.89 3.16 3.43 3.70 3.97 4.23 4.50 4.76 5.02 9,000 3.39 3.68 3.97 4.26...
  • Page 13 Table 13 — Fan Performance — 50A2,A3050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 8,000 2.76 3.15 3.54 3.94 4.34 4.74 5.16 5.58 6.01 6.45 9,000 3.62 4.03 4.45 4.87 5.29 5.72 6.15 6.59 7.03 7.49 10,000 4.62 5.06 5.50 5.95...
  • Page 14 Table 15 — Fan Performance — 48A4,A5020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (CFM) 4,000 0.71 0.97 1.25 1.54 1.84 2.14 2.44 2.75 3.06 3.37 5,000 1.10 1.37 1.66 1.96 2.28 2.60 2.93 3.27 3.60 3.94 6,000 1.61 1.89 2.19 2.51...
  • Page 15 Table 17 — Fan Performance — 48A4,A5035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 7,000 2.59 2.92 3.26 3.61 3.95 4.29 4.63 4.96 5.29 5.62 8,000 3.45 3.81 4.17 4.53 4.90 5.27 5.63 6.00 6.36 6.72 9,000 4.47 4.86 5.24 5.62...
  • Page 16 Table 19 — Fan Performance — 48A4,A5050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 8,000 3.18 3.58 3.99 4.41 4.83 5.27 5.71 6.16 6.63 7.09 9,000 4.17 4.60 5.04 5.48 5.93 6.38 6.84 7.31 7.79 8.28 10,000 5.35 5.80 6.27 6.73...
  • Page 17 Table 21 — Fan Performance — 50A4,A5020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (CFM) 4,000 0.62 0.82 1.04 1.26 1.48 1.71 1.93 2.16 2.38 2.61 5,000 0.95 1.17 1.41 1.65 1.89 2.14 2.39 2.64 2.89 3.14 6,000 1.41 1.64 1.88 2.14...
  • Page 18 Table 23 — Fan Performance — 50A4,A5035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 7,000 2.06 2.32 2.57 2.82 3.06 3.30 3.54 3.78 4.01 4.24 8,000 2.75 3.03 3.30 3.57 3.84 4.10 4.36 4.62 4.87 5.12 9,000 3.57 3.86 4.16 4.45...
  • Page 19 Table 25 — Fan Performance — 50A4,A5050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 8,000 2.95 3.35 3.74 4.14 4.54 4.95 5.36 5.79 6.22 6.66 9,000 3.87 4.29 4.71 5.13 5.56 5.99 6.42 6.87 7.31 7.77 10,000 4.96 5.40 5.85 6.30...
  • Page 20 Table 27 — Motor Limitations HIGH-EFFICIENCY MOTORS Nominal Maximum Maximum Amps Maximum Maximum Watts Efficiency 230 v 460 v 575 v 3.73 4.40 15.0 5,030 87.5 6.49 23.5 — — 7,717 84.1 7.09 — 12.0 10.0 8,008 88.5 10.2 7.61 31.0 —...

  • Page 21: Controls Quick Start

    Table 29 — Air Quantity Limits (50A2,A3,A4,A5) COOLING ELECTRIC HEAT UNIT Min CFM Max CFM* Min CFM Max CFM 50A2,A3020 6,000 10,000 50A4,A5020 4,000 10,000 50A2,A3025 7,500 12,500 50A4,A5025 5,000 12,500 50A2,A4027 8,100 13,500 6,000 15,000 50A3,A5027 5,400 13,500 50A2,A4030 9,000 15,000 50A3,A5030...

  • Page 22: Economizer Options

    2. Install jumpers between R-W2 and W2-W1 on TB4 in Indoor Air Quality (IAQ) Options the control box. DEMAND CONTROLLED VENTILATION — Under   3. Under the Setpoints menu, the following configurations Configuration DCV.C, the following configuration should be set: parameters should be set to establish the minimum and maxi- mum points for outdoor air damper position during demand OHSP...

  • Page 23: Service Test

    3. Configure the beginning of the occupied time period for new request will be delayed for 5 seconds. For example, if com- Period 1 (OCC). Scroll down to OCC and press ENTER pressors were turned on under the COOL sub-mode, any at- to go into Edit mode.
  • Page 24 only provided as an additional troubleshooting tool. The valves gas bypass around the Circuit B condenser. Switching B.CAL will automatically go through the calibration process anytime to ON will instruct the unit software to over-drive the valve in the unit is powered down, unit power is cycled, or anytime the closing direction.

  • Page 25: Third Party Control

    Table 30 — Service Test ITEM EXPANSION RANGE UNITS POINT WRITE 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.

  • Page 26: Demand Controlled Ventilation Control

    Demand limiting using mechanical control is possible via two If the switch is closed, the IAQ reading will be high and the means: economizer will be commanded to the Economizer Minimum Position. 1. Two discrete inputs tied to demand limit setpoint percent- ages.

  • Page 27: Controls Operation

    NOTE: If D.F.ON is configured below DAQ.H, the unit is in Table 31 — Operating Modes Display Table occupied mode, and the fan was off, then DAQ rose above D.F.ON and the fan came on, the economizer will go to the ITEM EXPANSION RANGE...

  • Page 28: Hvac Modes

    System Mode Test — When the system mode is Test, the con- temperature has dropped below the tempering vent setpoint. trol is limited to the Test mode and is controllable via the local Staged gas heat is used to temper the ventilation air. displays (scrolling marquee and Navigator™...
  • Page 29 Unit not in factory System Mode = test AND fire-smoke OFF? control mode is Fire- alarming? System Smoke Mode Control Inputs -> FIRE -> HVAC Mode = OFF Inputs -> FIRE -> Inputs -> FIRE -> FSD in alarm? (Disabled) PRES in alarm? EVAC in alarm? HVAC Mode = OFF...

  • Page 30: Unit Configuration Submenu

      Configuration DMD.L DM.L.S = 1 (2 SWITCHES) The UNIT sub- Unit Configuration Submenu — (Demand Limiting using 2 discrete switches) menu under the Configuration mode of the local display contains general unit configuration items. The sub-menu which  ...
  • Page 31 Condenser Type (CND.T) — This configuration specifies the effect depending on the installed elevation of the unit. If the type of condenser installed in the unit. Configuration CND.T is unit is installed at a particularly high altitude and enthalpy or set to 0 if the condenser is a round tube, plate fin coil (RTPF).

  • Page 32: Cooling Control

    COOL or a HIGH COOL mode and maintain a low or high When mechanical cooling Cooling Control — cool supply air setpoint. required, the A Series ComfortLink control system has the capability to control the staging of the compressors in several •...

  • Page 33: Supply Air Reset Configuration

    • 1 = SPT RESET will rise by the number of degrees as specified by this parameter. Space temperature will be used as the reset control variable along with both RTIO and LIMT in the calculation of the Reset Limit (LIMT) — This configuration is used when ...
  • Page 34 Compressor Lockout Temperature (MC.LO) — This config- Algorithm. The digital scroll compressor location shall be uration is the outdoor air temperature setting below which based on unit size according to the following table: mechanical cooling is locked out. UNIT SIZE DIGITAL SCROLL COMPRESSOR Fan-Off Delay, Mech Cool (C.FOD) —...

  • Page 35: Compressor Safeties

    CSB B1 Feedback Alarm (CS.B1) — This configuration is Fig. 5. Advanced scroll temperature protection is a form of in- used to enable or disable the compressor B1 feedback alarm. ternal discharge temperature protection that unloads the scroll This configuration must be enabled at all times. compressor when the internal temperature reaches approxi- mately 300 F.
  • Page 36 This section is devoted to the process of cooling mode configured, this capability will work to prevent over-cooling determination for the three types outlined above. the space during the occupied period. VAV Cool Mode Selection during the Occupied Period Supply Air Setpoint Control and the Staging of Compressors ...
  • Page 37 Table 37 — Cool/Heat Setpoint Offsets Configuration ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT D.LV.T COOL/HEAT SETPT. OFFSETS L.H.ON Dmd Level Lo Heat On -1 - 2 DMDLHON H.H.ON Dmd Level(+) Hi Heat On 0.5 - 20.0 DMDHHON L.H.OF Dmd Level(-) Lo Heat Off 0.5 - 2 DMDLHOFF L.C.ON...
  • Page 38 timeguard, and 2 compressors are to be turned on, then Hi Cool Mode mechanical stages = 4 (for 030 to 060 units only) compressors A1 and B1 will be turned on immediately instead of A1 and A2. NOTE: If some compressors are not available due to being faulted, the Hi Cool Mode number of compressors are affected Low Cool Versus High Cool Mechanical Staging —...
  • Page 39 Table 39 — 48/50A030-060 Units VAV and Adaptive CV/SAV Staging Sequence with Variable Capacity Compressor SEQUENCE 1 STAGE COMP Compressor Status UNIT Unit Capacity 48/50A 12.5% to 25% 37.5% to 50% 62.5% to 75% 87.5% to 100% 9.8% to 19.6% 29.4% to 29.4% 59.8% to 69.6% 90.2% to 100%...

  • Page 40: Cooling Mode Diagnostic Help

    Table 44 — Staging Sequence without Hot Gas Bypass — 48/50A3,A5030-060 and Multi-Stage 48/50A2,A4030-060 SEQUENCE 1 SEQUENCE 2 STAGE COMP Compressor Status Compressor Status UNIT Unit Capacity 48/50A Unit Capacity 48/50A 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Table 45 —...
  • Page 41 Table 47 — Run Status Cool Display ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS COOL COOLING INFORMATION C.CAP Current Running Capacity CAPTOTAL CUR.S Current Cool Stage COOL_STG REQ.S Requested Cool Stage CL_STAGE MAX.S Maximum Cool Stages CLMAXSTG DEM.L Active Demand Limit DEM_LIM forcible SUMZ...

  • Page 42: Demand Limit Control

    This “SUM” will be compared against the “Z” calculations • MAT.S = 0 in determining whether cooling stages should be added or There will be no MAT calculation. subtracted. • MAT.S = 1 Z Calculation — For the “Z” calculation, the control attempts The control will attempt to learn MAT over time.

  • Page 43: Head Pressure Control

    The configurations associated with demand limiting can be CCN Loadshed Demand Limiting (DM.L.S = 3) — If the unit  viewed at the local display at Configuration DMD.L. See has been configured for CCN Loadshed Demand Limiting,   Table 48. then the demand limiting variable (Run Status COOL DEM.L) is controlled via CCN commands.

  • Page 44: Economizer Integration With Mechanical Cooling

    Head Pressure Control Operation — Condenser head pres- Head Pressure Configurations — There are two configura- sure control for the 48/50A Series rooftops is controlled direct- tions provided for head pressure control that can be found at ly by the unit, except when the unit is equipped and configured the local display: for Motormaster ®...
  • Page 45 WITHOUT MOTORMASTER OPTION 20-35 Ton Controlling Output Contactor OFM(s) Circuit Software Board Conrolled Controlled Logic Common CONDFANA MBB Rly 6 OFC1 OFM1 Any compressor ON Common CONDFANB MBB Rly 5 OFC2 OFM2 Circuit A # of Fans ON Fans ON Circuit B # of Fans ON Fans ON...
  • Page 46 WITHOUT MOTORMASTER OPTION 36-50 Ton Controlling Output Contactor OFM(s) Circuit Software Board Conrolled Controlled Logic Common CONDFANA MBB Rly 6 OFC1 OFM1,2 Any compressor ON Common CONDFANB MBB Rly 5 OFC2 OFM3,4 Circuit A # of Fans ON Fans ON Circuit B # of Fans ON Fans ON...

  • Page 47: Heating Control

    WITHOUT MOTORMASTER OPTION 60 Ton MCHX Controlling Output Contactor OFM(s) Circuit Software Board Conrolled Controlled Logic CONDFANA MBB Rly 6 OFC4 OFM4 CMPA1/A2 MBB Rly 3/4 OFC3 OFM3 Comp A1 or A2 ON (Compressor AUX contactor) CONDFANB MBB Rly 5 OFC2 OFM2 CMPB1/B2...
  • Page 48 SETTING UP THE SYSTEM — The heating configurations (HT.CF=2,3) that the control will continue to energize the  are located at the local display under Configuration HEAT. supply fan. See Table 50. Fan-Off Delay, Elec Heat (E.FOD) — This configuration is Heating Control Type (HT.CF) —...

  • Page 49: Temperature Driven Heat Mode Evaluation

    SPT Multi-Stage (C.TYP = 5) and SPT 2 Stage (C.TYP = 6) Demand Level Low Heat Off Offset (L.H.OF) — This is the — There is no difference in the selection of a heat mode heating setpoint offset above the heating setpoint minus between the control types SPT 2-stage or SPT multi-stage.
  • Page 50 The controlling temperature is “TEMP” and is in the middle Max Cap Change per Cycle (CAP.M) — This configuration of the table for easy reference. Also, the “HVAC” mode can be limits the maximum change in capacity per PID run time cycle. viewed at the bottom of the table.

  • Page 51: Integrated Gas Control Board Logic

    Staged Gas Heating PID Logic — The heat control loop is a the staged gas control desired capacity rises, it is continually PID (proportional/integral/derivative) design with exceptions, checked against the capacity of the next staging pattern. overrides, and clamps. Capacity rises and falls based on set- When the desired capacity is greater than or equal to the point and supply-air temperature.
  • Page 52    Table 55 — Staged Gas Heat Control Steps (Configuration HEAT SG.CF HT.ST = 1) RELAY OUTPUT Heat 1 Heat 2 Heat 3 Heat 4 Heat 5 Heat 6 CAPACITY STAGE MBB-RLY8 MBB-RLY7 SCB-RLY1 SCB-RLY2 SCB-RLY3 SCB-RLY4 IGC1 MGV1 IGC2 MGV2...

  • Page 53: Morning Warm Up

    the building. Therefore, it may be necessary to bring heat on to Table 59 — IGC LED Indicators counter-effect this low supply-air temperature. This is referred to as the tempering mode. LED INDICATION ERROR CODE Normal Operation Setting up the System — The relevant setpoints for Temper- Hardware Failure ing are located at the local display under Setpoints: 1 Flash...

  • Page 54: Static Pressure Control

    stage is less than 75%. On units configured for two-stage ther- Variable air volume (VAV) Static Pressure Control — mostat operation, the fan will be at SP.MX on a call for W2 and air-conditioning systems must provide varying amounts of air at HT.VM on a call for only W1.

  • Page 55: Static Pressure Reset Operation

    VFD Heating Minimum Speed (HT.V.M) — This is the low The calculation is as follows: speed setting for units in heating mode. The range is 75 to (Static Pressure Reset/SP.LM) (ECONOSPR – 100% with the default setting of 75%. ECONOMIN) NOTE: Most VFDs have a built-in minimum speed adjustment As an example, the static pressure reset limit (SP.LM) = which must be configured for 0% when using ComfortLink...

  • Page 56: Related Points

    higher supply static pressure to meet the load conditions. For Third Party 4 to 20 mA Input — It is also possible to perform example, a system design requirement may be 1.2 in. wg, the static pressure reset via an external 4 to 20 mA signal connect- equipment may be capable of providing 3.0 in.

  • Page 57: Fan Status Monitoring

    Monitoring of the filter status switch is disabled in the Fan Status Monitoring Service Test mode and when the supply fan is not commanded GENERAL — The A Series ComfortLink controls offer the ca- on. If the fan is on and the unit is not in a test mode and the pability to detect a failed supply fan through either a duct static filter status switch reads “dirty”...

  • Page 58: Differential Dry Bulb Cutoff Control

    difference between RAT and OAT in order to measure a The control shall automatically clear the jammed actuator change in SAT as the damper modulates. alerts as follows: • If the actuator jammed while opening, when ECONOPOS 5. The actuator has moved at least T24ECSTS %. A very is greater than the jammed position the alerts shall be small change in damper position may result in a very cleared.

  • Page 59: Economizer Operation

    Economizer Trim for Sum Z? (E.TRM) — Sum Z is the If the user selects one of the Honeywell curves, A,B,C or D, adaptive cooling control algorithm used for multiple stages then OA.E.C options 1-4 should be selected. See Fig. 11 for a of mechanical cooling capacity.

  • Page 60: Unoccupied Economizer Free Cooling

    limit line in the custom curve of the psychrometric chart. This The Unoccupied Economizer Free Cooling Mode will stop is the outdoor air dewpoint limit boundary. when either of the following conditions are true: Custom Psychrometric Curves — Refer to the psychrometric {SPT <...
  • Page 61 Table 64 — Economizer Configuration Table ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT EC.EN Economizer Installed? Yes/No ECON_ENA EC.MN Economizer Min.Position 0 - 100 ECONOMIN EC.MX Economizer Max.Position 0 - 100 ECONOMAX EP.MS Economizer Position at Minimum VFD Speed 0 - 100 EPOSMNFS EP.XS Economizer Position at Maximum VFD Speed...

  • Page 62: Building Pressure Control

    The following information can be found under the Local protect the unit from freezing. For those conditions when the  Display Mode Run Status ECON. See Table 65. economizer opens up fully but is not able to make setpoint, and then a compressor comes on, it is conceivable that the coil Economizer Control Point Determination Logic —...

  • Page 63: Building Pressure Configuration

    Building Pressure Integral Gain (BP.I) — This configuration High Building Pressure Level (BP.HP) — This configura- selects the integral gain of the PID algorithm. This configuration tion is the threshold level above the building pressure setpoint is only active when BP.CF = 3. It is recommended that this val- used to control stages of power exhaust when BP.SL=1.

  • Page 64: Vfd Power Exhaust Building Pressure Control

    Table 66 — Building Pressure Configuration ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT BUILDING PRESS. CONFIG BP.CF Building Press. Config BLDG_CFG  BP.RT Bldg.Pres.PID Run Rate 5-120 BPIDRATE  BP.P Bldg. Press. Prop. Gain BLDGP_PG  BP.I Bldg.Press.Integ.Gain BLDGP_IG  BP.D Bldg.Press.Deriv.Gain BLDGP_DG...

  • Page 65: Smoke Control Modes

    D = K * BP.D * (error – error computed last time through mode occurs (outputs are forced internally with CCN priority the PID) number 1 - “Fire”). VFD speed reference (clamped between BP.MN and BP.MX%) = P + I + D FIRE DEVICE PRESSURIZATION PURGE EVACUATION...
  • Page 66 OPERATION — The unit’s indoor air quality algorithm mod- If OAQ exceeds the OAQ Lockout Value (OAQ.L), then the ulates the position of the economizer damper between two user economizer will remain at IAQ.M. This is used to limit the use configurations depending upon the relationship between the of outside air which outdoor air CO levels are above the...
  • Page 67    Using the following settings: is above Configuration AQ.SP DAQ.H, the economizer minimum position will be the IAQ override • EP.MS=20 (economizer commanded to 20% when    position (Configuration AQ.SP IQ.O.P). SFAN_VFD=SP.MN) • IQ.A.C = 3 (4 to 20 mA minimum position) — With a 4 •...
  • Page 68 FIXED MIN WITH OFFSET FIXED MINIMUM SFAN_VFD % Fig. 16 — Example of Dual Setpoint Versus Fixed Minimum Economizer Position Table 69 — Indoor Air Quality Configuration ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT DCV.C DCV ECONOMIZER SETPOINTS EC.MN Economizer Min.Position 0 - 100 ECONOMIN IAQ.M...

  • Page 69: Pre-Occupancy Purge

    It is also necessary to configure how the fan operates when PRE-OCCUPANCY PURGE — The control has the option using the IAQ discrete input. for a pre-occupancy purge to refresh the air in the space prior to occupancy.   IAQ Discrete Fan Config (Configuration AQ.CF ...
  • Page 70 Dehumidification Configuration (D.SEL) — The dehumidi- return during service test. It is recommended leaving this con- fication configuration can be set for the following settings: figuration enabled. • D.SEL = 0 – (NO DEHUMIDIFY) – No dehumidifica- This configuration shall have a range of DSLB/ENBL with tion and reheat.

  • Page 71: Humidi-Mizer Adaptive Dehumidification System

    • Cooling — For all cooling control types: A High Cool Relevant Outputs — The Humidi-MiZer 3-way valve (reheat  HVAC mode will be requested internally to the control to valve) commanded output can be found in Outputs  maintain diagnostics, although the end user will see a COOL RHV.

  • Page 72: Temperature Compensated Start

    evaporator leaving air temperature. The liquid refrigerant then Refrigerating, and Air-Conditioning Engineers) 90.1 compli- enters a thermostatic expansion valve (TXV) where the refrig- ance. A space sensor is required for non-linkage applications. erant pressure is decreased. The refrigerant enters the TXV and SETTING UP THE SYSTEM —...

  • Page 73: Temperature Compensated Start Logic

    TEMPERATURE COMPENSATED START LOGIC — The NOTE: Only the time and date broadcaster can perform following conditions must be met: daylight savings time adjustments. Even if the rooftop is stand • Unit is in unoccupied state. alone, the user may want to set this to ON to accomplish the •...

  • Page 74: Alert Limit Configuration

    SPT Override Enabled? (SPT.O) — If a space sensor is pres- generated and cooling operation will be stopped but heating ent, then it is possible to override an unoccupied period by operation will continue. The alert will automatically reset. pushing the override button on the T55 or T56 sensor. This EDT High Alert Limit/Unocc (SA.H.U) —...

  • Page 75: Sensor Trim Configuration

    Building Pressure Low Alert Limit (BP.L) — If the unit is Discharge Pressure Circuit B Trim (DP.B.T) — This vari- configured to use modulating power exhaust then a building able is used to adjust the discharge pressure sensor reading for static pressure limit can be configured using the BP Low Alert circuit B.

  • Page 76: Display Configuration

    Table 74 — Switch Logic Configuration ITEM EXPANSION RANGE CCN POINT DEFAULT SW.LG SWITCH LOGIC: NO / NC FTS.L Filter Status Inpt-Clean Open/Close FLTSLOGC Open IGC.L IGC Feedback - Off Open/Close GASFANLG Open RMI.L RemSw Off-Unoc-Strt-NoOv Open/Close RMTINLOG Open ECS.L Economizer Switch - No Open/Close ECOSWLOG...

  • Page 77: Hot Gas Bypass

    Table 77 — Remote Switch Logic Configuration REMOTE REMOTE SWITCH CONFIGURATION (RM.CF) SWITCH LOGIC SWITCH REMOTE INPUT STATE CONFIGURATION STATUS (REMT) No Remote Switch Occ-Unocc Switch Start/Stop Override (RMI.L) OPEN xxxxx Unoccupied Start No Override OPEN CLOSED xxxxx Occupied Stop Override OPEN xxxxx...
  • Page 78  then the period’s occupied time schedule will not be used on Holiday Duration (HD.01 to HD.30 LEN) — This is the Saturday. This variable can be set for Periods 1 through 8. length in days of the holiday. The holiday can last up to 99 days. ...

  • Page 79: Troubleshooting

    Humidi-MiZer Service Analysis (Table 80) for more informa- TROUBLESHOOTING tion. The scrolling marquee display shows the actual operating See Tables 83-85 conditions of the unit while it is running. If there are alarms or Thermistor Troubleshooting — there have been alarms, they will be displayed in either the cur- for temperature vs.
  • Page 80 Table 79 — Cooling Service Analysis PROBLEM SOLUTION COMPRESSOR DOES NOT RUN Active Alarm Check active alarms using local display. Contactor Open 1. Power off. 1. Restore power. 2. Fuses blown in field power circuit. 2. After finding cause and correcting, replace with correct size fuse. 3.
  • Page 81 Table 79 — Cooling Service Analysis (cont) PROBLEM SOLUTION SYSTEM IS NOISY 1. Piping vibration. 1. Support piping as required. 2. Compressor noisy. 2. Replace compressor. COMPRESSOR LOSES OIL 1. Leak in system. 1. Repair leak. 2. Crankcase heaters not energized during shutdown. 2.
  • Page 82 Table 80 — Humidi-MiZer ® Service Analysis (cont) PROBLEM CAUSE REMEDY No 24V signal to input terminals Check using Service Test mode. Check wiring. Check transformer and circuit breakers. Check RCB relay output. 3-Way Valve Malfunction Solenoid coil burnout Check continuous over-voltage is less than 10%. Check continuous under-voltage is less than 15%.
  • Page 83 Table 81 — Gas Heating Service Analysis PROBLEM CAUSE REMEDY Burners Will Not Ignite. Active alarm. Check active alarms using ComfortLink scrolling marquee. No power to unit. Check power supply, fuses, wiring, and circuit breakers. No power to IGC (Integrated Gas Control). Check fuses and plugs.
  • Page 84 LEGEND IDM — Induced-Draft Motor IGC — Integrated Gas Unit Controller NOTE: Thermostat Fan Switch in the “AUTO” position. A48-5656 Fig. 19 — IGC Service Analysis Logic...
  • Page 85 Table 83 — 5K Thermistor Temperature vs. Resistance (SCT Sensors) (English) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) 1.982 7,686 0.511 1,190 –25 3.699 98,010 1.956 7,665 0.502 1,165 –24 3.689 94,707 1.930 7,468 0.494...
  • Page 86 Table 84 — 5K Thermistor Temperature vs. Resistance (SCT Sensors) (SI) VOLTAGE VOLTAGE VOLTAGE TEMP RESISTANCE TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) 1.982 7,855 0.506 1,158 –32 3.705 100,260 1.935 7,499 0.490 1,118 –31 3.687 94,165 1.889 7,161 0.475...
  • Page 87 Table 86 — 10K Thermistor vs. Resistance (T55, T56, OAT, RAT, EDT, LAT, SAT Sensors) (English) TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE DROP (V) (Ohms) DROP (V) (Ohms) DROP (V) (Ohms) –25 4.758 196,453 2.994 14,925 0.890 2,166 –24 4.750...
  • Page 88 Table 87 — 10K Thermistor vs. Resistance (T55, T56, OAT, RAT, EDT, LAT, SAT Sensors) (SI) TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE DROP (V) (Ohms) DROP (V) (Ohms) DROP (V) (Ohms) –32 4.762 200,510 3.056 15,714 0.940 2,315 –31 4.748...
  • Page 89 Table 89 — Suction Pressure Transducer (PSIG) vs. Voltage (SP-A, SP-B) PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) 0.466 1.509 2.543 3.576 0.476 1.519 2.553 3.586 0.486 1.529 2.562 3.596...
  • Page 90 Table 90 — Discharge Pressure Transducer (PSIG) vs. Voltage (DP-A, DP-B) PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) 14.5 0.500 0.993 1.490 1.987 0.509 1.000 1.496 1.993 0.515 1.006 1.502...
  • Page 91 Table 90 — Discharge Pressure Transducer (PSIG) vs. Voltage (DP-A, DP-B) (cont) PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) (PSIG) DROP (V) 2.483 2.992 3.501 4.010 2.489 2.998 3.507 4.016 2.495 3.004 3.513...

  • Page 92: Forcing Inputs And Outputs

      Run Status VIEW HT.ST — This variable displays the Many variables may Forcing Inputs and Outputs — current number of heating stages active (for staged gas control be forced both from the CCN and directly at the local display. option only).

  • Page 93: Auto View Of Run Status

    Cap Threshold Subtracting (Z.MIN) — This parameter is Slow Change Cap Override (SLOW) — With a rooftop unit, used in the calculation of SMZ and is calculated as follows: the design rise at 100% total unit capacity is generally around 30...

  • Page 94: Cooling Information

    Table 93 — Cooling Information Display Table ITEM EXPANSION RANGE UNITS POINT WRITE STATUS COOL COOLING INFORMATION C.CAP Current Running Capacity CAPTOTAL CUR.S Current Cool Stage COOL_STG REQ.S Requested Cool Stage CL_STAGE MAX.S Maximum Cool Stages CLMAXSTG DEM.L Active Demand Limit DEM_LIM forcible SUMZ...

  • Page 95: Time Guard Display Table

    Table 98 — Time Guard Display Table ITEM EXPANSION RANGE UNITS POINT WRITE STATUS TMGD TIMEGUARDS TG.A1 Compressor A1 Timeguard CMPA1_TG TG.A2 Compressor A2 Timeguard CMPA2_TG TG.B1 Compressor B1 Timeguard CMPB1_TG TG.B2 Compressor B2 Timeguard CMPB2_TG TG.H1 Heat Relay 1 Timeguard HS1_TG TG.H2 Heat Relay 2 Timeguard...
  • Page 96 Table 100 — Alert and Alarm Codes ALARM OR RESET ALERT DESCRIPTION ACTION TAKEN BY CONTROL PROBABLE CAUSE METHOD NUMBER A051 Circuit A, Compressor 1 Stuck On Failure Turn off all compressors Manual Welded contact Automatic High pressure switch, compressor P051 Circuit A, Compressor 1 Failure Add strike to compressor...
  • Page 97 Table 100 — Alert and Alarm Codes (cont) ALARM RESET DESCRIPTION ACTION TAKEN BY CONTROL PROBABLE CAUSE ALERT METHOD NUMBER A200 Linkage Timeout Error - Communication Failure Stop unit Manual Wiring errors, board failures T210 Building Pressure Transducer Failure Close economizer, stop exhaust Automatic Sensor failure, wiring error T211...
  • Page 98 • Compressor internal overload protector is open. Internal control will request the supply fan which will automati- overload protectors are used in the Copeland compressors in cally start building airflow control. Condenser fans will all units except size 60 ton units with voltages of 208/230-v, also be commanded on to maintain normal head pressure.
  • Page 99 T076 (Outside Air Relative Humidity Sensor Failure) — P120 (Circuit A Low Saturated Suction Temperature — This alert occurs when the outside air humidity sensor (In- Compressor A2 Shutdown)   puts REL.H OA.RH) has a reading less than 2 mA. Failure T120 (Circuit A Low Saturated Suction Temperature Alert) of this sensor will disable any elements of the control which re- A120 (Circuit A Low Saturated Suction Temperature Alarm)
  • Page 100 thermistor has measured a temperature above 268 F or the broadcast an alarm back to the CCN indicating that the unit is thermistor is short circuited. The digital scroll compressor will down. This alarm will clear when the variable is set back to be shut down and alert T128 will be generated.
  • Page 101   of the CEM module), and the unit is configured to perform Limit/Unocc (Configuration ALLM SA.L.U) for 10 min- static pressure reset or remote control of the supply fan VFD utes, then an alert will be broadcast. with this transducer, no static pressure reset or VFD control T303 (Supply Temperature Above Limit) —...
  • Page 102 A404 (Fire Shutdown Emergency Mode) — This alarm occurs A409 (Supply Fan Commanded On, Sensed Off Failure) when the fire shutdown input is active (either open or closed A409 (Supply Fan Commanded Off, Sensed On Failure) depending upon its configuration). If the fire shutdown input is T409 (Supply Fan Commanded On, Sensed Off Failure) energized (fire shutdown is in effect), or if two fire smoke T409 (Supply Fan Commanded Off, Sensed On Failure) —...

  • Page 103: Major System Components

    T420 (R-W1 Jumper Must be Installed to Run Heat in Service A704 (Staged Gas Leaving Air Temperature Sum Total Fail- Test) — This alert occurs when a request for a heat output has ure) — If all three staged gas thermistors (Tempera- ...
  • Page 104 VAV BOARD (ECB2) — The VAV board (which is the same • demand limit sequence proportional signal or discrete hardware as the ECB1) is used to control the supply fan on switches VAV units. See Fig. 30. It sends a 4 to 20 mA signal to the VFD The CEM board is located in the main control box.
  • Page 107 a48--8357 Fig. 22 — Typical 2 Stage Gas Heat Wiring Schematic (Size 060 Units Shown)
  • Page 108 NEXT PAGE A48-7296 Fig. 23 — Typical Staged Gas Heat Wiring Schematic (Size 060 Units Shown)
  • Page 109 A48-8358 Fig. 23 — Typical Staged Gas Heat Wiring Schematic (Size 060 Units Shown) (cont)
  • Page 110 a50-8228...
  • Page 112 Fig. 26 — Typical Low Ambient Controls Option Wiring...
  • Page 115 LEGEND AND NOTES FOR FIG. 20-28 LEGEND — Circuit A — Power Exhaust Contactor — Auxiliary Contact — Power Exhaust Motor — Circuit B — Plug — Building Pressure Transducer — Phase Loss Protection — Contactor, Compressor RARH — Return Air Relative Humidity —...
  • Page 116 Table 101 — Main Control Board (MBB) Inputs and Outputs POINT I/O POINT PLUG AND PIN POINT DESCRIPTION SIGNAL PIN(S) PORT STATE NAME NAME REFERENCE INPUTS GASFAN YAC Indoor Fan relay (fan request from YAC) J6, 3-4 0 = 24vac, 1= 0vac Fire Shutdown switch input J6, 5-6 0 = 24vac, 1= 0vac...
  • Page 117 Table 102 — Economizer Control Board (ECB1) Inputs and Outputs POINT I/O POINT PLUG AND PIN POINT DESCRIPTION SIGNAL PIN(S) PORT STATE NAME NAME REFERENCE INPUTS RMTIN Remote occupancy J4, 1-2 24VAC = 1, 0VAC = 0 ECONENBL, Economizer enable J4, 3-4 24VAC = 1, 0VAC = 0 ECOORIDE...
  • Page 118 A48-7706 Fig. 30 — Economizer Control Board (ECB1) and VAV Control Board (ECB2)
  • Page 119 Table 104 — Staged Gas Control Board (SCB) Inputs and Outputs POINT I/O POINT PLUG AND PIN POINT DESCRIPTION SIGNAL PIN(S) PORT STATE NAME NAME REFERENCE INPUTS J5, 1-3 1=5v, 2=Vin, 3=GND (thermistor 1-2) (0-5VDC, thermistor, ohms) J5, 4-6 4=5v, 5=Vin, 6=GND (thermistor 4-5) (0-5VDC, thermistor, ohms) LAT1SGAS Leaving air temperature 1 J5, 7-9...
  • Page 120 Table 105 — Low Ambient Control Board (SCB2) Inputs and Outputs POINT POINT I/O POINT PLUG AND PIN SIGNAL PIN(S) PORT STATE NAME DESCRIPTION NAME REFERENCE INPUTS J5, 1-3 1=5v, 2=Vin, 3=GND (thermistor 1-2) (0-5VDC, thermistor, ohms) J5, 4-6 4=5v, 5=Vin, 6=GND (thermistor 4-5) (0-5VDC, thermistor, ohms) J5, 7-9 7=5v, 8=Vin, 9=GND (thermistor 7-8)
  • Page 121 Table 106 — Controls Expansion Board (CEM) Inputs POINT I/O POINT PLUG AND PIN POINT DESCRIPTION SIGNAL PIN(S) PORT STATE NAME NAME REFERENCE INPUTS Supply Fan Status switch DI 1 J7, 1-2 0 = 24vac, 1= 0vac DMD_SW1 Demand Limit - SW1 DI 2 J7, 3-4 0 = 24vac, 1= 0vac...
  • Page 122 Table 107 — Humidi-MiZer Control Board (EXV) Inputs and Outputs POINT I/O POINT PLUG AND PIN POINT DESCRIPTION SIGNAL PIN(S) PORT STATE NAME NAME REFERENCE INPUTS Air Temp Lvg Evap Coil J5, 5-6 5=Vin, 6=GND (Thermistor, ohms) J5, 7-8 7=Vin,8 =GND Thermistor, ohms) J5, 9-10 9=Vin, 10=GND...
  • Page 123 4.33 0.25 TYP. 3.83 5.93 R146 STATUS 5.68 R115 R118 R138 R120 2.95 R14 R15 ANALOG 0.25 TYP. 0.06 1.65 0.57 MAX. NOTE: Dimensions are shown in inches. Fig. 33 — Humidi-MiZer EXV Board SCROLLING MARQUEE — This device is the keypad in- Table 108 —...
  • Page 124 discharge saturation temperature sensors it can also display Table 109 — VFD Terminal Designations pressures typically obtained from gages. The control includes a full alarm history, which can be accessed from the display. In TERMINAL FUNCTION addition, through the scrolling marquee the user can access a built-in test routine that can be used at start-up commission and Three-Phase Main Circuit Input Power Supply to diagnose operational problems with the unit.

  • Page 125: Accessory Control Components

    THERMISTORS AND PRESSURE TRANSDUCERS — sensor and should be connected to TB5 terminal 6 and 7. See The 48/50A2,A3,A4,A5 units are equipped with four pressure Fig. 37 for sensor wiring. transducers. These units have two pressure transducers con- ECONOMIZER HUMIDITY CHANGEOVER SEN- nected to the low side of the system and two pressure transduc-...
  • Page 126 - GRD 11 13 Y1 Y2 W1 W2 G 10 12 14 16 11 13 12 14 16 A48-7081 Fig. 36 — Field Connection Terminal Strips (Main Control Box) UNIT CONTROL BOX 3 4 5 6 3 4 5 6 OVERRIDE A48-7306 Fig.
  • Page 127 Table 110 — Field Connection Terminal Strips TERMINAL TERMINAL DESCRIPTION TYPE BOARD TB-1 - POWER CONNECTION OR DISCONNECT (in Main Control Box) L1 power supply 208-230/460/575/380/-3-60, 400-3-50 L2 power supply 208-230/460/575/380/-3-60, 400-3-50 L3 power supply 208-230/460/575/380/-3-60, 400-3-50 TB-2 - GROUND (in Main Control Box) Neutral Power TB-3 - CCN COMMUNICATIONS (HY84HA096) (in Main Control Box) LEN +...
  • Page 128 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating tempera- ture range of –20°C to 60°C is required. It is important when connecting to a CCN communication bus that a color-coding scheme be used for the entire network to simplify the installation.
  • Page 129 CCN BUS ROOFTOP ROOFTOP UNIT UNIT COMPUTER WITH COMPUTER WITH ComfortVIEW™ ComfortView™ SOFTWARE SOFTWARE CCN WEB NETWORK ROOFTOP ROOFTOP OPTIONS UNIT UNIT HEATING/COOLING UNITS REMOTE TELINK CCN SITE BRIDGE (RECOM- ADDITIONAL MENDED) TERMINALS COMFORT ID COMFORT COMFORT ROOFTOP POWERED ID AIR ID AIR UNIT MIXING...

  • Page 130: Service

    SERVICE WARNING Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury. All unit components can be reached Service Access — through clearly labelled hinged access doors. These doors are not equipped with tiebacks, so if heavy duty servicing is need- ed, either remove them or prop them open to prevent accidental closure.
  • Page 131 NOTES: 1. Torque set screws on blower wheel to 70 in. lb ± 2 in. lb. A48-3822 2. Torque set screw on propeller fan to 15 in. lb ± 2 in. lb. 3. Dimensions are in inches. Fig. 43 — Typical Gas Heating Section Totaline Environmentally Balanced Coil Cleaner Application Routine Cleaning of Coil Surfaces —...

  • Page 132: Lubrication

    MICROCHANNEL HEAT EXCHANGER (MCHX) CON- To change fan speeds, change pulleys. DENSER COIL MAINTENANCE AND CLEANING To align fan and motor pulleys: RECOMMENDATIONS 1. Shut off unit power supply. 2. Loosen fan shaft pulley bushing. CAUTION 3. Slide fan pulley along fan shaft. 4.

  • Page 133: Evaporator Fan Service And Replacement

    CENTER DRIVE FLEX SHAFT SHAFT BEARINGS SHAFT MEMBER FLANGE A50-5146 Fig. 45 — Evaporator Fan Coupling 9. Torque nuts properly to 95 to 100 ft-lb. Do not turn a cou- 3. Fully retract motor plate adjusting bolts. pling bolt. Always turn the nut. Always use thread lubri- 4.

  • Page 134: Four-Inch Filter Replacement

    6. Tighten setscrews and replace panel(s). Table 111 — Round Tube, Plate Fin Unit Charge 7. Turn on unit power. UNIT REFRIGERANT LIQUID SIZE 48/50 TYPE SUBCOOLING 020, 027, 040, 15 F ± 2 F 050, 060 A2,A3,A4,A5 R-410A 030, 035 20 F ±...
  • Page 135 20 Ton MCHX CIRCUIT A Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T = 5 5 F S S T = 4 5 F S S T = 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F)
  • Page 136 25 and 27 Ton MCHX CIRCUIT A Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T= 5 5 F S S T= 4 5 F S S T= 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F)
  • Page 137 30 Ton MCHX CIRCUIT A Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T= 5 5 F S S T= 4 5 F S S T= 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F) 30 Ton MCHX CIRCUIT B Charging Chart...
  • Page 138 35 Ton MCHX CIRCUIT A Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T = 5 5 F S S T = 4 5 F S S T = 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F)
  • Page 139 40 Ton MCHX Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T= 5 5 F S S T= 4 5 F S S T= 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F) LEGEND...
  • Page 140 60 Ton MCHX CIRCUIT A Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating S S T= 5 5 F S S T= 4 5 F S S T= 3 5 F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (deg F) 60 Ton MCHX CIRCUIT B Charging Chart...

  • Page 141: Gas Valve Adjustment

    3. Remove heating access panel. Gas Valve Adjustment 4. Disconnect gas piping from gas valve inlet. NATURAL GAS — The 2-stage gas valve opens and closes in response to the thermostat or limit control. 5. Remove wires from gas valve. When power is supplied to valve terminals 3 and 4, the pilot 6.
  • Page 142 A48-3733 Fig. 56 — Main Burner Removal...

  • Page 143: Appendix A - Local Display Tables

    APPENDIX A — LOCAL DISPLAY TABLES MODE — RUN STATUS ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS PAGE NO. VIEW AUTO VIEW OF RUN STATUS HVAC ascii string spelling out the hvac modes string 92,93 Occupied ? YES/NO OCCUPIED forcible 92,93 Mixed Air Temperature...
  • Page 144 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — RUN STATUS (cont) ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS PAGE NO. COMPRESSOR RUN HOURS HR.A1 Compressor A1 Run Hours 0-999999 HR_A1 config HR.A2 Compressor A2 Run Hours 0-999999 HR_A2 config HR.B1 Compressor B1 Run Hours...
  • Page 145 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — SERVICE TEST (cont) ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS PAGE NO. HMZR TEST HUMIDIMIZER HumidiMiZer 3-Way Valve ON/OFF RHV_TST C.EXV Condenser EXV Position 0-100 CEXVHTST B.EXV Bypass EXV Position 0-100 BEXVHTST C.CAL...
  • Page 146 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — INPUTS ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS GEN.I GENERAL INPUTS FLT.S Filter Status Input DRTY/CLN FLTS forcible G.FAN Fan Request From IGC ON/OFF IGCFAN REMT Remote Input State RMTIN forcible E.SW Economizer Control Input...
  • Page 147 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — OUTPUTS ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS FANS FANS S.FAN Supply Fan Relay ON/OFF SFAN_RLY S.VFD Supply Fan VFD Speed 0-100 SFAN_VFD P.E.A Power Exhaust Relay A ON/OFF PE_A P.E.B Power Exhaust Relay B ON/OFF...
  • Page 148 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — CONFIGURATION (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO. COOL COOLING CONFIGURATION Z.GN Capacity Threshold Adjst -10 - 10 Z_GAIN 33,40-42 MC.LO Compressor Lockout Temp -20 - 55 OATLCOMP 33,34,42 C.FOD Fan-off Delay, Mech Cool...
  • Page 149 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — CONFIGURATION (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO. ECON ECONOMIZER CONFIGURATION EC.EN Economizer Installed? Yes/No ECON_ENA 22,58,61 Economizer Min.Position 0 - 100 ECONOMIN 22,26,27,58,61, EC.MN EC.MX Economizer Max.Position 0 - 100 ECONOMAX 22,47,58,61,62...
  • Page 150 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — CONFIGURATION (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO. INDOOR AIR QUALITY CFG. DCV.C DCV ECONOMIZER SETPOINTS Economizer Min.Position 0 - 100 ECONOMIN 22,26,27,67, EC.MN IAQ.M IAQ Demand Vent Min.Pos. 0 - 100 IAQMINP 26,67,68...
  • Page 151 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — CONFIGURATION (cont) ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO. ALLM ALERT LIMIT CONFIG. SP.L.O SPT lo alert limit/occ –10-245 SPLO 74,101 SP.H.O SPT hi alert limit/occ –10-245 SPHO 74,101 SP.L.U SPT lo alert limit/unocc –10-245...
  • Page 152 APPENDIX A — LOCAL DISPLAY TABLES (cont) MODE — TIME CLOCK ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT PAGE NO. TIME TIME OF DAY HH.MM Hour and Minute 00:00 TIME 77, 78 DATE MONTH,DATE,DAY AND YEAR MNTH Month of Year multi-text strings 77, 78 Day of Month...

  • Page 153: Appendix B - Ccn Tables

    APPENDIX B — CCN TABLES All A Series units with ComfortLink controls have a port for In the following tables the structure of the tables which are interface with the Carrier Comfort Network (CCN) system. used with the Service Tool as well as the names and data that ®...
  • Page 154 APPENDIX B — CCN TABLES (cont) STATUS DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS GENERAL Occupied ? Yes/No OCCUPIED forcible Static Pressure " H2O Building Pressure " H2O Outside Air Rel.Humidity OARH forcible Return Air Rel.Humidity RARH forcible Space Temperature Offset...
  • Page 155 APPENDIX B — CCN TABLES (cont) STATUS DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS TEMPCTRL Evaporator Discharge Tmp Leaving Air Temperature Mixed Air Temperature Controlling Return Temp RETURN_T forcible Controlling Space Temp SPACE_T forcible TEMPS Air Temp Lvg Supply Fan Return Air Temperature forcible...
  • Page 156 APPENDIX B — CCN TABLES (cont) STATUS DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS UOUTPUTS FANS Supply Fan Relay On/Off SFAN_RLY Supply Fan VFD Speed 0-100 SFAN_VFD Supply Fan Request Yes/No SFANFORC forcible Exhaust Fan VFD Speed 0-100 EFAV_VFD Power Exhaust Relay A...
  • Page 157 APPENDIX B — CCN TABLES (cont) CONFIG TABLES TABLE NAME RANGE UNITS POINT NAME DEFAULT ALARMDEF Alarm Routing Control 00000000-11111111 ALRM_CNT 11000000 Equipment Priority 0 - 7 EQP_TYPE Comm Failure Retry Time 1 - 240 RETRY_TM Re-Alarm Time 1 - 255 RE-ALARM Alarm System Name up to 8 alphanum...
  • Page 158 APPENDIX B — CCN TABLES (cont) CONFIG TABLES (cont) TABLE NAME RANGE UNITS POINT NAME DEFAULT SCHEDOVR Schedule Number 0-99 SCHEDNUM Accept Global Holidays? Yes/No HOLIDAYT Override Time Limit hours Timed Override Hours hours OVR_EXT Accepting an Override: SPT Override Enabled ? Yes/No SPT_OVER T58 Override Enabled ?
  • Page 159 APPENDIX B — CCN TABLES (cont) SERVICE-CONFIG TABLES (cont) TABLE NAME RANGE UNITS POINT NAME DEFAULT COOL Capacity Threshold Adjust –10-10 Z_GAIN Compressor Lockout Temp –20-55 OATLCOMP Fan-off Delay, Mech Cool 0-600 COOL_FOD Minimum Load Valve? (HGBP) Yes/No MLV_SEL Motor Master Control ? Yes/No MOTRMAST Head Pressure Setpoint...
  • Page 160 APPENDIX B — CCN TABLES (cont) SERVICE-CONFIG TABLES (cont) TABLE NAME RANGE UNITS POINT NAME DEFAULT ECON Economizer Installed ? Yes/No ECON_ENA Economizer Min.Position 0 - 100 ECONOMIN Economizer Max.Position 0 - 100 ECONOMAX Econ Pos at Min VFD Spd 0 - 100 EPOSMNFS Econ Pos at Max VFD Spd...
  • Page 161 APPENDIX B — CCN TABLES (cont) SERVICE-CONFIG TABLES (cont) TABLE NAME RANGE UNITS POINT NAME DEFAULT SP__ Static Pres.VFD Control? STATICFG Constant Vol IDF is VFD? Yes/No CVIDFVFD Static Pres.Fan Control? STATPFAN Static Pressure Sensor Enable/Disable SPSENS Disable Static Press. Low Range –10 - 0 SP_LOW Static Press.
  • Page 162 APPENDIX B — CCN TABLES (cont) SERVICE-CONFIG TABLES (cont) TABLE NAME RANGE UNITS POINT NAME DEFAULT generics POINT_01 Definition 8 CHAR ASCII POINT_01 POINT_02 Definition 8 CHAR ASCII POINT_02 POINT_03 Definition 8 CHAR ASCII POINT_03 POINT_04 Definition 8 CHAR ASCII POINT_04 POINT_05 Definition 8 CHAR ASCII...
  • Page 163 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS DMANDLIM Active Demand Limit 0-100 DEM_LIM forcible Percent Total Capacity 0-100 CAPTOTAL Demand Limit Select DMD_CTRL config Demand Limit Switch 1 On/Off DMD_SW1 forcible...
  • Page 164 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS EC_DIAG Economizer Active ? Yes/No ECACTIVE Conditions which prevent economizer being active: Econ Act. Unavailable? Yes/No ECONUNAV Remote Econ. Disabled ? Yes/No ECONDISA DBC - OAT lockout?
  • Page 165 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS LINKDATA Supervisory Element # SUPE-ADR Supervisory Bus SUPE-BUS Supervisory Block Number BLOCKNUM Average Occup. Heat Stp. AOHS Average Occup. Cool Stp. AOCS Average Unocc.
  • Page 166 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS STAGEGAS Heating Mode………..: Requested Heat Stage HT_STAGE Heating Control Point HEATCPNT Staged Gas LAT Sum LAT_SGAS Staged Gas LAT 1 LAT1SGAS Staged Gas LAT 2 LAT2SGAS Staged Gas LAT 3...
  • Page 167 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS TESTHEAT Requested Heat Stage 0-MAX HTST_TST test Heat Relay 1 ON/OFF HS1_TST test Heat Relay 2 ON/OFF HS2_TST test Relay 3 W1 Gas Valve 2 ON/OFF HS3_TST test...

  • Page 168: Appendix C - Vfd Information

    APPENDIX C — VFD INFORMATION On variable air volume units with optional VFD, the supply Table A — VFD Terminal Designations fan speed is controlled by a 3-phase VFD. The VFD is located in the supply fan section behind a removable panel. The VFD TERMINAL FUNCTION speed is controlled directly by the ComfortLink controls...
  • Page 169 APPENDIX C — VFD INFORMATION (cont) Table B — VFD Configurations PARAMETER GROUP PARAMETER TITLE PARAMETER INDEX CARRIER DEFAULT LANGUAGE 9901 ENGLISH APPLIC MACRO 9902 USER 1 MOTOR CTRL MODE 9904 SCALAR: FREQ Start-Up Data MOTOR NOM VOLT 9905 460v MOTOR NOM CURR 9906 *TBD*...
  • Page 170 APPENDIX C — VFD INFORMATION (cont) 4. Use the UP or DOWN keys to highlight the desired remote input control. To start the drive press the HAND or parameter and press EDIT (SOFT KEY 2). AUTO buttons, to stop the drive press the OFF button. 5.
  • Page 171 APPENDIX C — VFD INFORMATION (cont) CHANGED PARAMETERS MODE — The Changed Param- 5. The text “Restoring Parameters” will be displayed with a eters mode is used to view and edit recently changed parameters progress indicator. To stop the process, select ABORT on the drive.
  • Page 172 APPENDIX C — VFD INFORMATION (cont) 7. Use the UP or DOWN keys to highlight DATE FOR- The fault code on the control panel display is temporary. MAT and press SEL (SOFT KEY 2). Use the UP or Pressing the MENU, ENTER, UP button or DOWN buttons DOWN keys to change the parameter setting.
  • Page 173 APPENDIX C — VFD INFORMATION (cont) Table C — Fault Codes FAULT FAULT NAME DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION CODE IN PANEL Output current is excessive. Check for excessive motor load, insufficient acceleration time (parameters 2202 ACCELER TIME 1, OVERCURRENT default 30 seconds), or faulty motor, motor cables or connections.
  • Page 174 APPENDIX C — VFD INFORMATION (cont) Table D — Alarm Codes ALARM ALARM NAME DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION CODE IN PANEL Reserved 2001 — Reserved 2002 — Reserved 2003 — The change in direction being attempted is not allowed. Do not attempt to change the direction of motor rota- 2004 DIR LOCK tion, or Change parameter 1003 DIRECTION to allow direction change (if reverse operation is safe).
  • Page 175 APPENDIX C — VFD INFORMATION (cont) MAIN FAN REPLACEMENT — The main cooling fan of the VFD has a life span of about 60,000 operating hours at maximum rated operating temperature and drive load. The expected life span doubles for each 18 F drop in the fan temperature (fan temperature is a function of ambient tempera- tures and drive loads).
  • Page 176 APPENDIX C — VFD INFORMATION (cont) A48-7716 Fig. F — Internal Enclosure Fan Replacement...

  • Page 177: Process

    APPENDIX D — MODE SELECTION PROCESS The following section is to be used in conjunction with HVAC mode: ("Off ") Fig. 4 on page 29. To help determine why the unit controls are — The unit is off and no operating modes are active. in a certain mode, the programming logic is provided below.

  • Page 178: Appendix E - Upc Open Controller

    APPENDIX E — UPC OPEN CONTROLLER The following section is used to configure the UPC Open. The UPC Open controller is mounted in a separate enclosure below the main control box. 10's To Address the UPC Open Controller — user must give the UPC Open controller an address that is unique on the BACnet* network.
  • Page 179 APPENDIX E — UPC OPEN CONTROLLER (cont) Configuring the BAS Port for BACnet MS/ Use the same baud rate and communication settings TP — for all controllers on the network segment. The UPC Open controller is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications.
  • Page 180 APPENDIX E — UPC OPEN CONTROLLER (cont) a48-8582 Fig. K — BT485 Terminator Installation To install a BT485 terminator, push the BT485 terminator, temperature rating specifications list two acceptable alterna- on to the BT485 connector located near the BACnet connector. tives.
  • Page 181 APPENDIX E — UPC OPEN CONTROLLER (cont) Table I — Open System Wiring Specifications and Recommended Vendors WIRING SPECIFICATIONS RECOMMENDED VENDORS AND PART NUMBERS Connect Air Contractors Wire Type Description Belden RMCORP International Wire and Cable 22 AWG, single twisted shielded pair, low capacitance, CL2P, TC foam FEP, plenum rated.
  • Page 182 APPENDIX E — UPC OPEN CONTROLLER (cont) If there are problems wiring or ad- Configuring the UPC Open Controller's Prop- Troubleshooting — dressing the UPC Open controller, contact Carrier Technical The UPC Open device and ComfortLink controls erties — Support. must be set to the same CCN Address (Element) number and CCN Bus number.
  • Page 183 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME Active Demand Limit DEM_LIM 0-100 AV:9 dem_lim_1 Air Temp Lvg Supply Fan °F AV:10 sat_1 Alarm State BV:9...
  • Page 184 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME Compressor B2 Starts CY_B2 AV:37 cy_b2_1 Compressor B2 Strikes CMPB2STR AV:38 cmpb2str_1 Compressor B2 Timeguard CMPB2_TG AV:39 cmpb2_tg_1...
  • Page 185 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME Econ Recovery Hold Off? ECONHELD BV:42 econheld_1 Econo Current Min. Pos. MIN_POS AV:66 min_pos_1 Econo Position Override ECOORIDE...
  • Page 186 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME IAQ - Discrete Input IAQIN BV:1050 iaq_status_1 IAQ - PPM Indoor CO2 0-5000 AV:1009 iaq_1 IAQ Demand Vent Min.Pos.
  • Page 187 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME Power Exhaust Relay B PE_B BV:73 pe_b_1 Power Exhaust Relay C PE_C BV:74 pe_c_1 Pressurization Input PRES...
  • Page 188 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME Supply Fan Request SFANFORC BV:2004 sfan_forc_1 Supply Fan State SFAN BV:2001 sfan_1 Supply Fan Status Switch BV:95 sfs_1 Supply Fan VFD Speed...
  • Page 189 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST (cont) READ/ DEFAULT BACNET BACNET POINT DESCRIPTION POINT UNITS RANGE WRITE VALUE OBJECT ID OBJECT NAME NAME VAV Occ. Cool Off Delta VAVOCOFF °^F 25-Jan AV:180 vavocoff_1 VAV Occ. Cool On Delta VAVOCON °^F 0-25...

  • Page 190: Appendix F - Optional Low Ambient

    ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL This appendix contains instructions for the start-up and ser- SCT.B is the saturated condensing temperature for refrigeration vice of the optional low ambient Motormaster ® V (MMV) con- Circuit B. There are a total of up to 6 condenser fans (depend- trol on 48/50A020-060 units.
  • Page 191 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) Fig. N — Low Ambient MMV Control Location — 48/50A040-050 Units...
  • Page 192 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) Fig. O — Low Ambient MMV Control Location — 48/50A060 RTPF Units...
  • Page 193 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) Fig. P — Low Ambient MMV Control Location — 48/50A060 MCHX Units The following ComfortLink control configurations must be ® Configure Motormaster V Control — set when using a Motormaster V device: tormaster V control is configured for proportional integral (PI) control mode.
  • Page 194 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont)   Unit size (Configuration UNIT SIZE), refrigerant type point to which the ComfortLink PD routine will modulate   (Configuration UNIT RFG.T), and condenser heat ex- VFD fan speed. The Motormaster setpoint is calculated as HP- ...
  • Page 195 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) When a compressor has been commanded on, then Motor- the compressor engages. The control will adjust the fan speed master Fan Circuit A (SCB Relay 1) will be energized to maintain head pressure setpoint.
  • Page 196 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) 4. Restore factory defaults by changing the value in P48 us- 6. Change the value of P48 to the desired factory default ing UP and DOWN buttons and then storing the value by mode using UP and DOWN buttons then press MODE.
  • Page 197 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) • P54: LOAD - in percent of drives rated output current TROUBLESHOOTING • P55: VDC INPUT - in percent of maximum input: 100% Troubleshooting the Motormaster V control requires a com- will indicate full scale which is 5 v bination of observing system operation and VFD display infor- •...
  • Page 198 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) Table M — Program Parameters for the Operating Mode PARAMETERS DESCRIPTION MODE 1 MODE 2 MODE 4 Line Voltage: 01 = low line, 02 = high line Carrier Freq: 01 = 4 kHz, 02 = 6 kHz, 03 = 8 kHz Startup mode: flying restart Stop mode: coast to stop Standard Speed source: 01 = keypad, 04 = 4-20mA (NO PI), 05 = R22 or...
  • Page 199 ® APPENDIX F — OPTIONAL LOW AMBIENT MOTORMASTER V CONTROL (cont) control is in operation, order a signal isolator (CEAS420876-2) The drive uses a electronic programming EPM Chip — and power supplies (CEAS221045-01, 2 required) for the CCN module (EPM) chip to store the program parameters. This is an communication line.

  • Page 200: Index

    INDEX Accessory control components Low ambient Motormaster control 190-199 Accessory installation Lubrication Accessory Navigator™ display Main burners 4, 125 Airflow control during Major system components 103-129 fire-smoke modes Mode selection Alarm output Mode trip helper Alarms and alerts Modes Alert limit configuration Multi-stage constant volume units with Auto view of run status mechanical thermostat...

  • Page 201: Controls Setpoint And Configuration Log

    CONTROLS SETPOINT AND CONFIGURATION LOG MODEL NUMBER: Software Version SERIAL NUMBER: CESR131343-- DATE: CESR131249-- TECHNICIAN: CESR131465- NAVI CESR131227-- CESR131226-- CESR131174-- MARQ CESR131171-- ITEM EXPANSION RANGE DEFAULT ENTRY UNIT UNIT CONFIGURATION C.TYP Machine Control Type 1 - 6 (multi-text strings) CV.FN Fan Mode (0=Auto, 1=Cont) 0 - 1 (multi-text strings) RM.CF...
  • Page 202 ITEM EXPANSION RANGE DEFAULT ENTRY COOL (cont) COOLING CONFIGURATION A1.EN Enable Compressor A1 Enable/Disable Enable A2.EN Enable Compressor A2 Enable/Disable Enable B1.EN Enable Compressor B1 Enable/Disable Enable B2.EN Enable Compressor B2 Enable/Disable Enable CS.A1 CSB A1 Feedback Alarm Enable/Disable Enable CS.A2 CSB A2 Feedback Alarm Enable/Disable...
  • Page 203 ITEM EXPANSION RANGE DEFAULT ENTRY ECON ECONOMIZER CONFIGURATION EC.EN Economizer Installed? Yes/No EC.MN Economizer Min.Position 0 - 100 % EC.MX Economizer Max.Position 0 - 100 % EP.MS Economizer Position at Min. VFD 0 - 100 % EP.XS Economizer Position at Max. VFD 0 - 100 % E.TRM Economzr Trim For SumZ ?
  • Page 204 ITEM EXPANSION RANGE DEFAULT ENTRY D.LV.T COOL/HEAT SETPT. OFFSETS L.H.ON Dmd Level Lo Heat On –1 - 2 ^F H.H.ON Dmd Level(+) Hi Heat On 0.5 - 20.0 ^F L.H.OF Dmd Level(-) Lo Heat Off 0.5 - 2 ^F L.C.ON Dmd Level Lo Cool On –1 - 2 ^F...
  • Page 205 ITEM EXPANSION RANGE DEFAULT ENTRY BROD CCN BROADCST DEFINITIONS TM.DT CCN Time/Date Broadcast ON/OFF OAT.B CCN OAT Broadcast ON/OFF ORH.B CCN OARH Broadcast ON/OFF OAQ.B CCN OAQ Broadcast ON/OFF G.S.B Global Schedule Broadcst ON/OFF B.ACK CCN Broadcast Ack'er ON/OFF SC.OV CCN SCHEDULES-OVERRIDES SCH.N Schedule Number...

  • Page 206: Unit Start-Up Checklist

    UNIT START-UP CHECKLIST NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sec- tions of this Controls, Start-Up, Operation, Service and Trouble- shooting document.
  • Page 207 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.
  • Page 208 © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480166-01 Printed in U.S.A. Form 48/50A-13T Pg CL-8 2-18 Replaces: 48/50A-12T...

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