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

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and is turned into a superheated vapor. The air passing over the evaporator coil will become colder than during normal operation. However, as this same air passes over the Humidi-MiZer reheat coil, it will be warmed to meet the supply air set point temperature requirement. See Fig. 16. Temperature Compensated Start — This logic is used when the unit is in the unoccupied state. The control will calculate early Start Bias time based on Space Temperature deviation from the occupied cooling and heating set points. This will allow the control to start the unit so that the space is at conditioned levels when the occupied period starts. This is required for ASHRAE 90.1 compliance. A space sensor is required for non-linkage applications. Airflow EVAPORATOR Evaporator Discharge Temperature In Subcool or Reheat Mode, compressor staging and increased subcooling drives evaporator discharge temperature down to meet higher latent loads 82 SETTING UP THE SYSTEM — The settings for temperature compensated start can be found in the local display under ConfigurationUNIT. ITEM EXPANSION RANGE UNITS CCN POINT TCS.C Temp.Cmp.Strt.Cool Factr 0 - 60 min TCSTCOOL TCS.H Temp.Cmp.Strt.Heat Factr 0 - 60 min TCSTHEAT 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. HUMIDI-MIZER ADAPTIVE DEHUMIDIFICATION SYSTEM COIL CCT SAT D.C.SP COOL Fig. 15 — Humidi-MiZer ® System Control Fig. 16 — Humidi-MiZer System Diagram Supply Air Temperature Control Innovative algorithm to control supply air temperature modulates flow bypass to meet desired supply air setpoint - no overcooling or overheating of the space. Subcooling Mode: Meet Cooling Mode Supply Air Setpoint Reheat Mode: Meet Return Air Offset or Reheat Setpoint (configurable) RAT-D.V.RA or D.V.HT CIRCUIT B CIRCUIT A
TEMPERATURE COMPENSATED START LOGIC — The following conditions must be met for the algorithm to run: • Unit is in unoccupied state. • Next occupied time is valid. • Current time of day is valid. • Valid space temperature reading is available (sensor or DAV-Linkage). The algorithm will calculate a Start Bias time in minutes using the following equations: If (space temperature > occupied cooling set point) Start Bias Time = (space temperature – occupied cooling set point)* TCS.C If (space temperature < occupied heating set point) Start Bias Time = (occupied heating set point – space temperature)*TCS.H When the Start Bias Time is greater than zero the algorithm will subtract it from the next occupied time to calculate the new start time. When the new start time is reached, the Temperature Compensated Start mode is set (Operating ModesMODE T.C.ST), the fan is started and the unit controlled as in an occupied state. Once set, Temperature Compensated mode will stay on until the unit goes into the Occupied mode. The Start Bias Time will be written into the CCN Linkage Equipment Table if the unit is controlled in DAV mode. If the Unoccupied Economizer Free Cool mode is active (Operating ModesHVAC = “UNOCC FREE COOL”) when temperature compensated start begins, the Unoccupied Free Cool mode will be stopped. Carrier Comfort Network ® (CCN) — It is possible to configure the ComfortLink controls to participate as an element of the Carrier Comfort Network (CCN) system directly from the local display. This section will deal with explaining the various programmable options which are found under the CCN sub-menu in the Configuration mode. The major configurations for CCN programming are located in the local displays at ConfigurationCCN. See Table 61. CCN Address (CCNA) — This configuration is the CCN address the rooftop is assigned. CCN Bus Number (CCNB) — This configuration is the CCN bus the rooftop is assigned. CCN Baud Rate (BAUD) — This configuration is the CCN baud rate. CCN Time/Date Broadcast (TM.DT) — If this configuration is set to ON, the control will periodically send the time and date out onto the CCN bus once a minute. If this device is on a CCN network then it will be important to make sure that only one device on the bus has this configuration set to ON. If more than one time broadcaster is present, problems with the time will occur. NOTE: Only the time and date broadcaster can perform daylight 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 broadcast its outside air relative humidity at a rate of once every 30 minutes. CCN OAQ Broadcast (OAQ.B) — If this configuration is set to ON, the control will periodically broadcast its outside air quality reading at a rate of once every 30 minutes. Global Schedule Broadcast (G.S.B) — If this configuration is set to ON and the schedule number (SCH.N) is between 65 and 99, then the control will broadcast the internal time schedule once every 2 minutes. 83 CCN Broadcast Acknowledger (B.ACK) — If this configuration is set to ON, then when any broadcasting is done on the bus, this device will respond to and acknowledge. Only one device per bus can be configured for this option. Schedule Number (SCH.N) — This configuration determines what schedule the control may follow. SCH.N = 0 The control is always occupied. SCH.N = 1 The control follows its internal time schedules. The user may enter any number between 1 and 64 but it will be overwritten to “1” by the control as it only has one internal schedule. SCH.N = 65-99 The control is either set up to receive to a broadcasted time schedule set to this number or the control is set up to broadcast its internal time schedule (G.S.B) to the network and this is the global schedule number it is broadcasting. If this is the case, then the control still follows its internal time schedules. Accept Global Holidays? (HOL.T) — If a device is broadcasting the time on the bus, it is possible to accept the time yet not accept the global holiday from the broadcast message. Override Time Limit (O.T.L) — This configuration allows the user to decide how long an override occurs when it is initiated. The override may be configured from 1 to 4 hours. If the time is set to 0, the override function will become disabled. Timed Override Hours (OV.EX) — This displays the current number of hours left in an override. It is possible to cancel an override in progress by writing “0” to this variable, thereby removing the override time left. SPT Override Enabled? (SPT.O) — If a space sensor is present, then it is possible to override an unoccupied period by pushing the override button on the T55 or T56 sensor. This option allows the user to disable this function by setting this configuration to NO. T58 Override Enabled? (T58.O) — The T58 sensor is a CCN device that allows cooling/heating set points to be adjusted, space temperature to be written to the rooftop unit, and the ability to initiate a timed override. This option allows the user to disable the override initiated from the T58 sensor by setting this option to NO. Global Schedule Override? (GL.OV) — If the control is set to receive global schedules then it is also possible for the global schedule broadcaster to call out an override condition as well. This configuration allows the user to disable the global schedule broadcaster from overriding the control. Alert Limit Configuration — The ALLM submenu is used to configure the alert limit set points. A list is shown in Table 62. SPT Low Alert Limit/Occ (SP.L.O) — If the space temperature is below the configurable occupied SPT Low Alert Limit (SP.L.O), then Alert 300 will be generated and the unit will be stopped. The alert will automatically reset. SPT High Alert Limit/Occ (SP.H.O) — If the space temperature is above the configurable occupied SPT High Alert Limit (SP.H.O), then Alert 301 will be generated and the unit will be stopped. The alert will automatically reset. SPT Low Alert Limit/Unocc (SP.L.U) — If the space temperature is below the configurable unoccupied SPT Low Alert Limit (SP.L.U), then Alert 300 will be generated and the unit will be stopped. The alert will automatically reset. SPT High Alert Limit/Unocc (SP.H.U) — If the space temperature is above the configurable unoccupied SPT High Alert Limit (SP.H.U), then Alert 301 will be generated and the unit will be stopped. The alert will automatically reset.
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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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Page 39 and 40: and when ON, the control sets a cap
Page 41 and 42: System Mode Test — When the syste
Page 43 and 44: Table 31 — Unit Configuration ITE
Page 45 and 46: SETTING UP THE SYSTEM Machine Contr
Page 47 and 48: High SST Alert Delay Time (H.SST)
Page 49 and 50: Table 36 — Cool/Heat Set Point Of
Page 51 and 52: Table 38 — Run Status Cool Displa
Page 53 and 54: To use Demand Limiting, select the
Page 55 and 56: Size 050, 055, 060 Contactor OFM(s)
Page 57 and 58: Whenever the outdoor ambient temper
Page 59 and 60: Demand Level Low Heat Off Offset (L
Page 61 and 62: Limit Switch Low Temp (SW.L.T) —
Page 63 and 64: STAGE Table 49 — IGC LED Indicato
Page 65 and 66: Table 50 — Static Pressure Contro
Page 67 and 68: Table 53 — Dirty Filter Switch Po
Page 69 and 70: NOTE: If the user wishes to disable
Page 71 and 72: the economizer modulates when attem
Page 73 and 74: P = K * BP.P * (error) I = K * BP.I
Page 75 and 76: its smoke. Closing the economizer (
Page 77 and 78: Table 57 — Indoor Air Quality Con
Page 79 and 80: Table 58 — Humidity Configuration
Page 81: The default sensor is the return ai
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
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LEGEND IAQ — Indoor Air Quality V
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the motor position to be configured
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TIME EWT LWT SETP Run Status Servic
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Fig. 37 — Door Latch Fig. 38 —
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SUPPLY FAN AND POWER EXHAUST MOTOR
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Routine cleaning of coil surfaces i
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Saturated Discharge Temperature (de
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Gas System Adjustment (48P Only) GA
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APPENDIX A — LOCAL DISPLAY TABLES
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APPENDIX B — CCN TABLES (cont) ST
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APPENDIX B — CCN TABLES (cont) ST
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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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