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

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Table 100 — IGC Board Inputs and Outputs POINT NAME INPUTS POINT DESCRIPTION CONNECTOR PIN NO. RT 24 Volt Power Supply RT,C W Heat Demand 2 G Fan 3 LS Limit Switch 7,8 RS Rollout Switch 5,6 SS Hall Effect Sensor 1,2,3 CS Centrifugal Switch (Not Used) 9,10 FS OUTPUTS Flame Sense FS CM Induced Draft Motor CM IFO Indoor Fan IFO R 24 Volt Power Output (Not Used) R SPARK Sparker — LED Display LED SCROLLING MARQUEE — This device is the keypad interface used to access the control information, read sensor values, and test the unit. The scrolling marquee display is a 4-key, 4-character, 16-segment LED display as well as an Alarm Status LED. See Fig. 33. The display is easy to operate using 4 buttons and a group of 11 LEDs that indicate the following menu structures: • Run Status • Service Test • Temperatures • Pressures • Set points • Inputs • Outputs • Configuration • Timeclock • Operating Modes • Alarms Through the scrolling marquee, the user can access all the inputs and outputs to check on their values and status. Because the unit is equipped with suction pressure transducers and discharge saturation temperature sensors, the scrolling marquee can also display pressures typically obtained from gages. The control includes a full alarm history, which can be accessed from the display. In addition, through the scrolling marquee the user can access a built-in test routine that can be used at startup commission and to diagnose operational problems with the unit. The scrolling marquee is located in the main control box and is standard on all units. SUPPLY FAN — The 48/50P030-050 units are equipped with a single 25 x 25-in. forward-curved fan. The 48/50P055-070 units are equipped with a single 30 x 27-in. forward-curved fan. The 48/50P075-100 units are equipped with either a single 36 x 30-in. forward-curved fan or a 36-in. airfoil fan. The fan sleds are spring isolated and driven by a single, 3-phase motor. The fan is controlled directly by the ComfortLink controls. MODE Run Status Service Test Temperature Pressures Setpoints Inputs Outputs Configuration Time Clock Operating Modes Alarms Alarm Status ESCAPE ENTER Fig. 33 — Scrolling Marquee 134 VARIABLE FREQUENCY DRIVE (VFD) — On units equipped with optional supply fan and/or exhaust fan VFDs, the fan speed is controlled by a 3-phase VFD. The supply fan VFD is located in the supply fan section (030-050 size units) or mixing box section (055-100 size units) behind an access door. For 075-100 size units with optional high-capacity power exhaust or return/exhaust fan, the exhaust fan VFD is located in the mixing box section behind an access door. The P Series units use ABB VFDs. The VFDs communicate to the ComfortLink MBB over the local equipment network (LEN). The VFD speed is controlled directly by the ComfortLink controls over the LEN. The interface wiring for the VFDs is shown in Fig. 34 and the terminal designations are shown in Table 101. The VFD has a keypad display panel that can be used for service diagnostics and setting the initial VFD parameters required to allow the VFD to communicate on the LEN. Additional VFD parameters are set by the ComfortLink controls, and sent to the VFD over the LEN at power up of the VFD. The VFD faults can be reset with the VFD keypad or through the ComfortLink controls (AlarmsR.CUR =Yes). Table 101 — VFD Terminal Designations TERMINAL FUNCTION U1 Three-phase main circuit input power supply V1 W1 U2 Three-Phase AC Output to Motor, 0 V to V2 Maximum Input Voltage Level W2 X1-11 (GND) Factory-supplied jumper X1-12 (D-COM) X1-10 (+24 V) Factory-supplied jumper X1-13 (DI-1) X1-10 (+24 V) Start Enable 1 (Factory-supplied jumper). X1-16 (DI-4) When opened the drive goes to emergency stop. X1-28 (SCR) Factory wired for local equipment network LEN X1-29 (B+) communication X1-30 (B-) X1-31 (AGND) X1-32 (SCR) POWER EXHAUST — The units can be equipped with an optional power exhaust system. The power exhaust fans are two belt-drive forward-curved fans. On non-modulating systems, the fans are staged by the ComfortLink controls based on the economizer damper position. For modulating (CV or VAV) applications, the fans are turned on by the ComfortLink controls based on building pressure sensed by the building pressure transducer. The fan output is modulated via discharge dampers communicating actuators to maintain the building pressure set point. HIGH CAPACITY POWER EXHAUST (Sizes 075-100 Only) — The power exhaust fans are two belt-driven forwardcurved fans. Operation of the power exhaust is a combination modulating/staged control. The lead fan is controlled by a VFD and provides 0 to 50% of total exhaust capability. The second fan is staged On/Off (for a step of 50% of total exhaust capability) according to the VFD output level on fan no. 1. RETURN/EXHAUST FAN (Sizes 075-100 Only) — The return/exhaust fan power exhaust assembly consists of one belt-drive plenum fan. The plenum fan pressurizes the plenum fan section so that the air can either be discharged horizontally out the back of the unit or discharged through the return air section of the economizer. ECONOMIZER MOTOR(S) — The economizer outside air and return air dampers are gear-driven dampers without linkages. A communicating economizer motor(s) controls their position. The motor position is controlled by the MBB through the communication bus. This allows for accurate control of the motors as well as feedback information and diagnostics information. The control has a self-calibration routine that allows
the motor position to be configured at initial unit start-up. The motor(s) is located on the economizer and can be reached through the filter access door. THERMISTORS AND PRESSURE TRANSDUCERS — The unit is equipped with several thermistors for measurement of temperatures. The thermistors are summarized in Table 102. The units have two pressure transducers that are connected to the low side of the system. These two pressure transducers measure the low side pressure and are used for low pressure protection and coil freeze protection. The units also have two pressure transducers that are connected to the high side of the system. These two pressure transducers measure the discharge pressure and are used to cycle the condenser fans to maintain head pressure. By using the high and low side pressure transducers, the ComfortLink controls display the high and low side pressures and saturation temperatures and a normal gage set is not required. SMOKE DETECTOR — The units can be equipped with an accessory smoke detector located in the return air. The detector is wired to the ComfortLink controls and, if activated, will stop the unit by means of a special fire mode. The smoke detector can also be wired to an external alarm system through TB201 terminals 1 and 2. The sensor is located in the return air section. FILTER STATUS SWITCH — The units can be equipped with an optional filter status switch. The switch measures the pressure drop across the filters and closes when an adjustable pressure set point is exceeded. The sensor is located in the return air section behind the filter access door. FAN STATUS SWITCH — The units can be equipped with an optional fan status switch that will monitor the pressure rise across the indoor fans. RETURN AIR CO 2 SENSOR — The unit can be equipped with a return air IAQ CO 2 sensor that is used for the demand control ventilation. The sensor is located in the return air section and can be accessed from the filter access door. +24 V GND DCOM DI-1 DI-2 DI-3 Terminal X1 DI-4 DI-5 135 BOARD ADDRESSES — Each board in the system has an address. The MBB has a default address of 1 but it does have an instance jumper that should be set to 1 as shown in Fig. 29. For the other boards in the system there is a 4-dip switch header on each board that should be set as shown below. BOARD SW1 SW2 SW3 SW4 RXB 0 0 0 0 EXB 1 0 0 0 SCB 0 0 0 0 CEM 0 0 0 0 0 = On; 1 = Off Accessory Control Components — In addition to the factory-installed options, the units can also be equipped with several field-installed accessories that expand the control features of the unit. The following hardware components can be used as accessories. ROOM THERMOSTATS — The ComfortLink controls support a conventional electro-mechanical or electronic thermostat that uses the Y1, Y2, W1, W2, and G signals. The control also supports an additional input for an occupied/ unoccupied command that is available on some new thermostats. The ComfortLink controls can be configured to run with up to 6 stages of capacity. The room thermostat is connected to TB201. The ComfortLink controls also support the use of space temperature sensors and can be used with the T55 and T56 sensors. The controls can also be used with CCN communicating T58 room sensor. The T55 and T56 sensors are connected to TB201 terminals 1, 2, and 3. The T58 sensor is connected to the CCN connections on COMM board. Whenever a unit equipped with heat is operated without a thermostat, the user must install the red jumpers from R to W1, and W2 on TB201 for the heat function to work correctly. SPACE CO 2 SENSORS — The ComfortLink controls also support a CO 2 IAQ sensor that can be located in the space for use in demand ventilation. The sensor must be a 4 to 20 mA sensor and should be connected to TB201 terminals 7 and 8. 10 11 12 13 14 15 16 17 18 28 29 30 31 32 DI-6 Fig. 34 — VFD Wiring SCR B(+) A(-) AGND SCR LEN connection from ComfortLink
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Controls, Start-Up, Operation, Serv
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WARNING What to do if you smell gas
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and the ENTER keys until the desire
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START-UP IMPORTANT: Do not attempt
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Table 4 — Fan Performance — 48P
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AIRFLOW (cfm) Table 10 — Fan Perf
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AIRFLOW (Cfm) LEGEND Table 18 — F
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AIRFLOW (cfm) LEGEND Bhp — Brake
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HIGH-EFFICIENCY MOTORS Nominal Maxi
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2. Under the Setpoints menu, set th
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would use Period 2 and set days Sat
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there is a loss of communication be
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and when ON, the control sets a cap
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System Mode Test — When the syste
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Table 31 — Unit Configuration ITE
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SETTING UP THE SYSTEM Machine Contr
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High SST Alert Delay Time (H.SST)
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Table 36 — Cool/Heat Set Point Of
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Table 38 — Run Status Cool Displa
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To use Demand Limiting, select the
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Size 050, 055, 060 Contactor OFM(s)
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Whenever the outdoor ambient temper
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Demand Level Low Heat Off Offset (L
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Limit Switch Low Temp (SW.L.T) —
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STAGE Table 49 — IGC LED Indicato
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Table 50 — Static Pressure Contro
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Table 53 — Dirty Filter Switch Po
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NOTE: If the user wishes to disable
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the economizer modulates when attem
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P = K * BP.P * (error) I = K * BP.I
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its smoke. Closing the economizer (
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Table 57 — Indoor Air Quality Con
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Table 58 — Humidity Configuration
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The default sensor is the return ai
Page 83 and 84: TEMPERATURE COMPENSATED START LOGIC
Page 85 and 86: Sensor Trim Configuration — The T
Page 87 and 88: SUPPLY FAN VFD CONFIGURATION — Th
Page 89 and 90: REMOTE SWITCH LOGIC CONFIGURATION (
Page 91 and 92: Alarms and Alarm History for for an
Page 93 and 94: Transducer Troubleshooting — The
Page 95 and 96: Table 75 — 10K Thermistor vs Resi
Page 97 and 98: TEMP RESISTANCE (F) (Ohms) -25 98,0
Page 99 and 100: PRESSURE (PSIG) Table 80 — Suctio
Page 101 and 102: Table 81 — Discharge Pressure Tra
Page 103 and 104: Table 82 — Auto View of Run Statu
Page 105 and 106: Table 84 — Cooling Information Di
Page 107 and 108: equalize compressor oil levels. If
Page 109 and 110: Table 91 — Alert and Alarm Codes
Page 111 and 112: T072 (Evaporator Discharge Reset Se
Page 113 and 114: This alarm will disable mechanical
Page 115 and 116: This is the reverse of the Pressuri
Page 117 and 118: 117 a48-8408 Fig. 19 — Typical Po
Page 119 and 120: OD ENTHALPY SWITCH LOW REMOTE OCCUP
Page 121 and 122: Fig. 23 — Typical Electric Heat U
Page 123 and 124: 123 Fig. 25 — Typical Gas Heat Se
Page 125 and 126: 125 Fig. 27 — Component Arrangeme
Page 127 and 128: ACCSY — Accessory ACC’Y — Acc
Page 129 and 130: Table 93 — Rooftop Control Board
Page 131 and 132: Table 96 — Control Expansion Modu
Page 133: LEGEND IAQ — Indoor Air Quality V
Page 137 and 138: TIME EWT LWT SETP Run Status Servic
Page 139 and 140: Fig. 37 — Door Latch Fig. 38 —
Page 141 and 142: SUPPLY FAN AND POWER EXHAUST MOTOR
Page 143 and 144: Routine cleaning of coil surfaces i
Page 145 and 146: Saturated Discharge Temperature (de
Page 163 and 164: Gas System Adjustment (48P Only) GA
Page 165 and 166: APPENDIX A — LOCAL DISPLAY TABLES
Page 177 and 178: APPENDIX B — CCN TABLES (cont) ST
Page 179 and 180: APPENDIX B — CCN TABLES (cont) ST
Page 181 and 182: APPENDIX B — CCN TABLES (cont) SE
Page 183 and 184: APPENDIX B — CCN TABLES (cont) SE
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APPENDIX B — CCN TABLES (cont) SE
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APPENDIX B — CCN TABLES (cont) MA
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APPENDIX B — CCN TABLES (cont) MA
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TESTACTC TESTCOOL TESTFANS TESTHEAT
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APPENDIX C — UNIT STAGING TABLES
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* 41 for Supply Fan Motor VFD, 42 f
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Fig. B — VFD Keypad START UP WITH
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Upload All Parameters — To upload
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To replace the main fan for frame s
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ALARM CODE ALARM NAME IN PANEL 2001
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APPENDIX E — MODE SELECTION PROCE
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CONTROLS SET POINT AND CONFIGURATIO
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Controls, Start-Up, Operation, Service and ... - Climayoreo

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