Carrier 48/50AJ - Manuals

5 Items in the Configuration and Service Test modes are password protected. The display will flash PASS and WORDwhen required. Use the and arrow keys to enter the four digits of the password. The default password is 1111. Pressing the and keys simultaneously will scroll an expanded text description ...

6 Table 2 — Scrolling Marquee Menu Display Structure ( Comfort Link™ Display Modes) RUN STATUS SERVICE TEST TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION TIME CLOCK OPERATING MODES ALARMS Auto View of Run Status (VIEW) Econ Run Status (ECON) Cooling Information (COOL) Mode Trip Helpe...

9 Table 5 — Fan Performance — 48AJ,AK,A2,A3035 Units Table 6 — Fan Performance — 48AJ,AK036 Units LEGEND Bhp — Brake Horsepower edb — Entering Dry Bulb ewb — Entering Wet Bulb NOTES:1. Fan performance is based on wet coils, economizer, roof curb, cabinet losses, and clean 2-in. filters. 2. Conversio...

10 Table 7 — Fan Performance — 48AJ,AK,A2,A3040 Units Table 8 — Fan Performance — 48AJ,AK041 Units AIRFLOW (Cfm) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 8,000 502 2.90 550 3.30...

26 Table 39 — Motor Limitations LEGEND NOTES:1. Extensive motor and electrical testing on the Carrier units has ensured that the full horsepower range of the motor can be utilized with confidence. Using the fan motors up to the horsepower ratings shown in the Motor Lim-itations table will not result...

27 Table 40B — Air Quantity Limits (50AJ,AK,AW,AY,A2,A3,A4,A5) *Operation at these levels may be limited by entering evaporator air wet bulb temperatures. CONTROLS QUICK START The following section will provide a quick user guide to set- ting up and configuring the A Series units with Comfort Link™ ...

28 Variable Air Volume Units Using Return AirSensor or Space Temperature Sensor — To con- figure the unit, perform the following: 1. The type of control is configured under Configuration  UNIT  C.TYP . Set C.TYP to 1 (VAV-RAT) for return air sensor. Set C.TYP to 2 (VAV-SPT) for space tempera- ture...

29 Indoor Air Quality (IAQ) Options DEMAND CONTROLLED VENTILATION — Under Configuration  IAQ  DCV.C , the following configuration parameters should be set to establish the minimum and maxi- mum points for outdoor air damper position during demand controlled ventilation (DCV): EC.MN Economizer Min....

30 However, it is important to note that the user can leave a Service Test mode to view any of the local display modes and the control will remain in the Service Test mode. Independent Outputs — The INDP sub-mode items can be turned on and off regardless of the other category states. For example, th...

31 THIRD PARTY CONTROL Thermostat — The method of control would be through the thermostat inputs: Y1 = first stage cooling Y1 and Y2 = first and second stage cooling W1 = first stage heating W1 and W2 = first and second stage heating G = supply fan Alarm Output — The alarm output TB4-7 and 8, will p...

33 Table 42 — Operating Modes Display Table Supply Air Reset ( SA.R ) — This variable displays if the sup- ply air reset is currently active. This applies to cooling only.Demand Limit in Effect ( DMD.L ) — This variable displays if the mechanical cooling capacity is currently being limited or reduce...

34 S y s tem Mode = OFF ? Inp u t s -> FIRE -> F S D in a l a rm ? HVAC Mode = OFF (Fire S h u tdow n) HVAC Mode = OFF (Di sab led) Unit not in f a c to r y te s t AND fire- s m o k e control m ode i s a l a rm ing? Inp u t s -> FIRE -> PRE S in a l a rm ? HVAC Mode = OFF (Pre ssu riz a ...

35 HVAC Mode — TEMPERING HICOOL (12) — The econ- omizer is at minimum vent position but the combination of the outside-air temperature and the economizer position has dropped the supply-air temperature below the tempering cool set point. Staged gas heat is used to temper the ventilation air.HVAC Mod...

36 Compensated Start section for more information. A setting of 0 minutes indicates Temperature Compensated Start in Cooling is not permitted.Temperature Compensated Start Heating Factor ( TCS.H ) — This factor is used in the equation of the Temperature Compen- sated Start Time Bias for heating. Ref...

37 Reset MAT Table Entries? ( MAT.R ) — This configuration allows the user to reset the internally stored MAT learned con- figuration data back to the default values. The defaults are set to a linear relationship between the economizer damper posi- tion and OAT and RAT in the calculation of MAT. MAT...

39 Table 47 — Cooling Configuration Capacity Threshold Adjust ( Z.GN ) — This configuration is used for units using the “SumZ” algorithm for cooling capacity control ( Configuration  UNIT  C.TYP = 1, 2, 3 or 5). The configuration affects the cycling rate of the cooling stages by raising or lowerin...

40 temperature (OAT) rises above 75 F or the highest active cir- cuit saturated condensing temperature (SCT) rises above the HPSP and remains on until the condition is repaired regardless of the OAT and SCT values. Any time the alert occurs, a strike is called out on the affect- ed compressor. If th...

41 The advantage of this offset technique is that the control can safely enforce a vent mode without worrying about crossing set points. Even more importantly, under CCN linkage, the occupied heating set point may drift up and down and this method ensures a guaranteed separation in degrees Fahrenhei...

42 Table 48 — Cool/Heat Set Point Offsets Configuration Timeguards — In addition to the set points and offsets which determine the trip points for bringing on and bringing off cool modes there is a timeguard of 8 minutes which enforces a time delay between the transitioning from a low cool to a high...

43 then Lo Cool Mode mechanical stages = 2 and Hi Cool Mode mechanical stages = 2. 5. If the economizer position is greater than Configuration  ECON  EC.MX – 5% for more than 8 minutes but less than 11.5 minutes and mechanical cooling has started then:Lo Cool Mode mechanical stages = 2Hi Cool Mode...

46 COOLING MODE DIAGNOSTIC HELP — To quickly de- termine the current trip points for the cooling modes, the Run Status sub-menu at the local display allows the user to view the calculated start and stop points for both the cooling and heating trip points. The following sub-menu can be found at the l...

47 Table 62 — Run Status Cool Display Slow Change Cap Override ( SLOW ) — With a rooftop unit, the design rise at 100% total unit capacity is generally around 30  F. For a unit with 4 stages, each stage represents about 7.5  F of change to EDT. If stages could reliably be cycled at very fast rat...

48 MAT Calc Config ( MAT.S ) — This configuration gives the user two options in the processing of the mixed-air temperature (MAT) calculation: • MAT.S = 0 There will be no MAT calculation. • MAT.S = 1 The control will attempt to learn MAT over time. Any time the system is in a vent mode and the econ...

49 Table 63 — Demand Limit Configuration The relevant configurations for this type of demand limiting are:Loadshed Group Number ( SH.NM ) — CCN Loadshed Group numberLoadshed Demand Delta ( SH.DL ) — CCN Loadshed Demand DeltaMaximum Loadshed Time ( SH.TM ) — CCN Maximum Loadshed time The Loadshed Gro...

50 Table 64 — Condenser Fan Staging * For size 60 ton units with MCHX condensers, MBB – Relay 6 drives OFC4 and compressor contactor B1 or B2 auxiliary contacts drive OFC1. For 060 size units with MCHX condensers, there are four outdoor fans, two for each independent refrigerant circuit. The control...

51 Table 65 — Heating Configuration *Some defaults are model number dependent. Occupied Heating Enable ( OC.EN ) — This configuration only applies when the unit’s control type ( Configuration  UNIT  C.TYP ) is configured for 1 (VAV-RAT) or 2 (VAV- SPT). If the user wants to have the capability of ...

52 TEMPERATURE DRIVEN HEAT MODE EVALUATION — This section discusses the control method for selecting a heat- ing mode based on temperature. Regardless of whether the unit is configured for return air or space temperature, the logic is ex- actly the same. For the rest of this discussion, the temperat...

53 Table 67 — Mode Trip Helper Table If the HVAC mode is HIGH HEAT: • If Electric Heat is configured, then the control will request the supply fan ON • If Gas Heat is configured, then the IGC indoor fan input controls the supply fan request • The control will turn on Heat Relay 1 ( HS1 ) • The contr...

54 Table 68 — Staged Gas Configuration *Some configurations are model number dependent. Staged Gas Heat Staging — Different unit sizes will control heat stages differently based on the amount of heating capacity included. These staging patterns are selected based on the mod- el number. The selection...

56 Table 73 — Staged Gas Heat Control Steps ( Configuration  HEAT  SG.CT  HT.ST = 4) RELOCATE SAT (Supply Air Temperature) SENSOR FOR HEATING IN LINKAGE APPLICATIONS — On CCN in- stallations employing ComfortID™ terminals, the factory SAT location must be changed to a new location downstream of t...

57 HVAC mode = “Tempering LoCool” HVAC mode = “Tempering HiCool” The decision making/selection process for the tempering trip set point is as follows:• If an HVAC cool mode is in effect, then the vent trip point is T.CL . • If in a pre-occupied purge mode ( Operating Modes  MODE  IAQ.P= ON ), then...

58 Static Pressure Set Point ( SP.SP ) — This is the static pres- sure control point. It is the point against which the Comfort Link controls compare the actual measured supply duct pressure for determination of the error that is used for PID control. Generally one would set SP.SP to the minimum val...

59 Therefore, the amount to add to the economizer’s ECONOMIN configuration is: (0.5/0.75) x (50-20) = 20%. In effect, for the positioning of the economizer, ECONOMIN would now be replaced by ECONOMIN + 10%.Static Pressure PID Config ( S.PID ) — Static pressure PID configuration can be accessed under...

60 Table 76 — Static Pressure Reset Related Points Table 77 — Fan Status Monitoring Configuration Fan Stat Monitoring Type ( SFS.M ) — This configuration se- lects the type of fan status monitoring to be performed.0 - NONE — No switch or monitoring 1 - SWITCH — Use of the fan status switch 2 - SP RI...

61 modulate to the same control point (Sum Z) that is used to control capacity staging. The advantage is lower compressor cycling coupled with tighter temperature control. Setting this option to No will cause the economizer, if it is able to provide free cooling, to open to the Economizer Max. Posit...

62 Table 79 — Economizer Configuration Table Custom Psychrometric Curves — Refer to the psychrometric chart and the standard Honeywell A-D curves in Fig. 10. The curves start from the bottom and rise vertically, angle to the left and then fold over. This corresponds to the limits imposed by dry bulb...

63 Unoccupied Economizer Free Cooling Outside Lockout Temperature ( FC.LO ) — This configuration option allows the user to select an outside-air temperature below which unoc- cupied free cooling is not allowed. This is further explained in the logic section.Unoccupied Economizer Free Cooling Logic —...

64 Table 80 — Economizer Run Status Table Building Pressure Config ( BP.CF ) — This configuration se- lects the type of building pressure control.• BP.CF = 0, No building pressure control • BP.CF = 1, constant volume two-stage power exhaust based on economizer position • BP.CF = 2, multiple stage bu...

66 Table 83 — Power Exhaust Staging ( BP.CF = 2) • If building pressure ( Pressures  AIR.P  BP ) is less than the building pressure set point ( Configuration  BP  BPSP ) minus the building pressure low threshold level ( Configuration  BP  B.CFG  BP.LP ) subtract a stage of power exhaust. VFD ...

67 RELEVANT ITEMSThe economizer’s commanded output can be found in Outputs  ECON  ECN.C . The configurable fire speed override for supply fan VFD is in Configuration  SP  SP.FS . The supply fan relay’s commanded output can be found in Outputs  FANS  S.FAN . The supply fan VFD’s commanded speed...

68 • IQ.A.C = 4 (10K potentiometer minimum position) — With a 10K linear potentiometer connected to TB5-6 and 7, the economizer minimum position will be scaled linearly from 0% (0 kilo-ohms) to EC.MX (10 kilo-ohms). IAQ Analog Fan Config ( Configuration  IAQ  AQ.CF  IQ.A.F ) — This configuration ...

69 IAQ Econo Override Pos ( Configuration  IAQ  AQ.SP  IQ.O.P ) — This configuration is the position that the econo- mizer goes to when override is in effect.Diff. Air Quality Lo Limit ( Configuration  IAQ  AQ.SP  DAQ.L ) — This is the differential CO 2 level at which IAQ control of the dampe...

72 Table 86 — CCN Configuration * For units equipped with optional UPC, the CCN Baud Rate must be set to 3. Accept Global Holidays? ( HOL.T ) — If a device is broad- casting the time on the bus, it is possible to accept the time yet not accept the global holiday from the broadcast message.Override T...

73 then Alert 309 will occur. The unit will continue to run and the alert will automatically reset.Supply Duct Pressure Low Alert Limit ( SP.L ) — If the unit is a VAV unit with a supply duct pressure sensor and the mea- sured supply duct static pressure is below the configurable SP Low Alert Limit ...

74 Discharge Pressure Circuit A Trim ( DP.A.T ) — This vari- able is used to adjust the discharge pressure sensor reading for circuit A. The sensor reading can be adjusted ± 50 psig to match the actual measured pressure. Used on 48/ 50A2,A3,A4,A5 units only.Discharge Pressure Circuit B Trim ( DP.B.T...

75 Table 89 — Switch Logic Configuration Table 90 — Display Configuration Table 91 — Remote Switch Configuration Remote Switch Logic Configuration ( Configuration  SW.LG  RMI.L ) — The control allows for the configuration of a normally open/closed status of the remote input switch via RMI.L . If t...

76 Table 92 — Remote Switch Logic Configuration Monday In Period ( PER.X  DAYS  MON ) — This vari- able is used to include or remove Monday from the schedule. Each period is assigned an occupied on and off time. If this variable is set to YES, then Monday will be included in that peri- od’s occupi...

77 Table 93 — Time Clock Configuration TROUBLESHOOTING The scrolling marquee display shows the actual operating conditions of the unit while it is running. If there are alarms or there have been alarms, they will be displayed in either the cur- rent alarm list or the history alarm list. The Service ...

78 Transducer Troubleshooting — On 48/50AJ,AK, AW,AY units, the electronic control uses 2 suction pressure transducers to measure the suction pressure of circuits A and B. The pressure/voltage characteristics of these transducers are in shown in Tables 101 and 102. On 48/50A2,A3,A4,A5 units, the ele...

79 Table 94 — Cooling Service Analysis (cont) LEGEND PROBLEM SOLUTION COMPRESSOR RUNNING BUT COOLING INSUFFICIENTSuction Pressure Low1. Refrigerant charge low. 1. Add refrigerant. 2. Head pressure low. 2. Check refrigerant charge. 3. Air filters dirty. 3. Clean or replace filters. 4. Expansion valve...

81 Fig. 14 — IGC Service Analysis Logic LEGEND NOTE: Thermostat Fan Switch in the“AUTO” position. IDM — Induced-Draft Motor IGC — Integrated Gas Unit Controller A48-5656

91 Cap Threshold Subtracting ( Z.MIN ) — This parameter is used in the calculation of SMZ and is calculated as follows: Z.MIN = Configuration  COOL  Z.GN * (–10 + (4* ( – SUB.R ))) * 0.6 Cap Threshold Adding ( Z.PLU ) — This parameter is used in the calculation of SMZ and is calculated as follows:...

93 Table 112 — Time Guard Display Table Table 113 — Software Version Numbers Display Table Alarms and Alerts — There are a variety of different alerts and alarms in the system.• P — Pre-Alert: Part of the unit is temporarily down. The alarm is not broadcast on the CCN network. The alarm relay is not...

94 Table 114 — Alert and Alarm Codes ALARM OR ALERT NUMBER DESCRIPTION ACTION TAKEN BY CONTROL RESET METHOD PROBABLE CAUSE A051 Circuit A, Compressor 1 Stuck On Failure Turn off all compressors Manual Welded contact P051 Circuit A, Compressor 1 Failure Add strike to compressor Automatic (max 3) High...

101 T705 (Limit Switch Thermistor Failure) — A failure (the sen- sor is outside the range of –40 F to 240 F) of this thermistor ( Temperatures  AIR.T  S.G.LM ) will cause an alert to occur and a disabling of the limit switch monitoring function for the staged gas control board (SCB). Recovery is a...

105 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ TONEXTPAGE Fig. 17 — Typical Auxiliary Control Box Wiring Schematic A48-7294

106 ~ ~~ ~ ~ ~ ~~ ~ ~ ~ ~ ~ ~ Fig. 17 — Typical Auxiliary Control Box Wiring Schematic (cont) a48-8356

118 Table 115 — Main Control Board (MBB) Inputs and Outputs YAC — Gas Heat Unit POINT NAME POINT DESCRIPTION I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT STATE INPUTS GASFAN YAC Indoor Fan relay (fan request from YAC) DI1 J6, 3-4 4 0 = 24vac, 1= 0vac FSD Fire Shutdown switch input DI2 J6...

119 Table 116 — Economizer Control Board (ECB1) Inputs and Outputs POINT NAME POINT DESCRIPTION I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT STATE INPUTS RMTIN Remote occupancy DI1 J4, 1-2 2 24VAC = 1, 0VAC = 0 ECONENBL, ECOORIDE Economizer enable DI2 J4, 3-4 4 24VAC = 1, 0VAC = 0 RARH R...

120 Table 117 — VAV Control Board (ECB2) Inputs and Outputs POINT NAME POINT DESCRIPTION I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT STATE INPUTS DI1 J4, 1-2 2 24VAC = 1, 0VAC = 0 DI2 J4, 3-4 4 24VAC = 1, 0VAC = 0 BP Building static pressure AN1 J5, 1-3 1=24VDC, 2=0-20mA in, 3=GND 0-20m...

121 Table 118 — Staged Gas Control Board (SCB) Inputs and Outputs POINT NAME POINT DESCRIPTION I/O POINT NAME PLUG AND PIN REFERENCE SIGNAL PIN(S) PORT STATE INPUTS AN1 J5, 1-3 1=5v, 2=Vin, 3=GND (thermistor 1-2) (0-5VDC, thermistor, ohms) AN2 J5, 4-6 4=5v, 5=Vin, 6=GND (thermistor 4-5) (0-5VDC, the...

122 Table 119 — Controls Expansion Board (CEM) Inputs Table 120 — IGC Board Inputs and Outputs SCROLLING MARQUEE — This device is the keypad in- terface 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 LE...

123 Table 121 — VFD Terminal Designations POWER EXHAUST — The units can be equipped with an optional power exhaust system. The power exhaust fans are forward-curved fans with direct-drive motors. The motors are controlled directly by the Comfort Link™ controls through the ECB1 board. On the 48/50A02...

124 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. 26. For the other boards in the system there is a 4-dip switch head- er on each board that should be set as shown below. 0 = ...

125 Table 122 — Field Connection Terminal Strips TERMINAL BOARD TERMINAL NO. DESCRIPTION TYPE TB-1 - POWER CONNECTION OR DISCONNECT (in Main Control Box) TB1 11 L1 power supply 208-230/460/575/380/-3-60, 400-3-50 12 L2 power supply 208-230/460/575/380/-3-60, 400-3-50 13 L3 power supply 208-230/460/5...

126 Green LED — The boards also have a green LED, which is the indicator of the operation of the LEN communications, which is used for communications between the boards. On the MBB board the Local Equipment Network (LEN) LED should always be blinking whenever power is on. All other boards have a LEN...

127 To connect the unit to the network: 1. Turn off power to the control box. 2. Cut the CCN wire and strip the ends of the red (+), white (ground), and black (–) conductors. (Substitute appropri- ate colors for different colored cables.) 3. Connect the red wire to (+) terminal on TB3 of the plug, t...

128 SERVICE Service Access — All unit components can be reached 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. Each door is held closed with 3 latche...

129 COMBUSTION-AIR BLOWER — Clean periodically to as- sure proper airflow and heating efficiency. Inspect blower wheel every fall and periodically during heating season. For the first heating season, inspect blower wheel bi-monthly to deter- mine proper cleaning frequency. To inspect blower wheel, r...

130 11. Ensure surfaces are not allowed to dry before rinsing. Reapplying cleaner as needed to ensure 10-minute satura- tion is achieved. 12. Thoroughly rinse all surfaces with low velocity clean wa- ter using downward rinsing motion of water spray nozzle. Protect fins from damage from the spray noz...

131 7. Outside of the unit, assemble the flex members to the cen- ter drive shaft with 4 bolts and nuts. The flex members have collars that need to be inserted into the smaller hole of the drive shaft flange. 8. Assemble the flex member/drive shaft assembly to one of the shaft flanges, using 2 bolts...

132 Condenser-Fan Adjustment NOTE: Condenser fans on size 060 MCHX units are not adjustable. 1. Turn off unit power supply.2. Remove fan guard.3. Loosen fan hub setscrews.4. Adjust fan height on shaft using a straightedge placed across venturi and measure per Fig. 43. 5. Fill hub recess with permagu...

133 20 Ton MCHX CIRCUIT A Ch a rging Ch a rt All Compre ss or s on a Circ u it M us t b e Oper a ting All O u tdoor F a n s M us t b e Oper a ting 70 75 8 0 8 5 90 95 100 105 110 115 120 125 1 3 0 1 3 5 140 145 150 55 60 65 70 75 8 0 8 5 90 95 100 105 110 115 120 125 O u tdoor Air Temper a t u re (d...

134 Fig. 45 — Charging Chart — 48/50A2,A3,A4,A5025 and 027 with R-410A Refrigerant LEGEND MCHX — Microchannel Heat Exchanger SST — Saturated Suction Temperature 25 a nd 27 Ton MCHX CIRCUIT A Ch a rging Ch a rt All Compre ss or s on a Circ u it M us t b e Ope r a ting All O u tdoor F a n s M us t b e...

137 40 Ton MCHX Ch a rging Ch a rt All Compre ss or s on a Circ u it M us t b e Ope r a ting All O u tdoor F a n s M us t b e Ope r a ting 70 75 8 0 8 5 90 95 100 105 110 115 120 125 1 3 0 1 3 5 140 145 150 55 60 65 70 75 8 0 8 5 90 95 100 105 110 115 120 125 O u tdoor Air Te m pe r a t u re (de g F...

139 Main Burners — For all applications, main burners are factory set and should require no adjustment.MAIN BURNER REMOVAL (Fig. 52) 1. Shut off (field-supplied) manual main gas valve.2. Shut off power supply to unit.3. Remove heating access panel.4. Disconnect gas piping from gas valve inlet.5. Rem...

140 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 90,91  OCC Occupied ? YES/NO OCCUPIED forcible 90,91  MAT Mixed Air Temperature dF MAT 90,91  EDT ...

148 APPENDIX B — CCN TABLES All A Series units with Comfort Link™ controls have a port for interface with the Carrier Comfort Network ® (CCN) system. On TB3 there is a J11 jack which can be used for temporary connection to the CCN network or to computers equipped with CCN software like the Service T...

152 APPENDIX B — CCN TABLES (cont) CONFIG TABLES (cont) SERVICE-CONFIG TABLES TABLE NAME RANGE UNITS POINT NAME DEFAULT SCHEDOVR Schedule Number 0-99 SCHEDNUM 0 Accept Global Holidays? Yes/No HOLIDAYT No Override Time Limit 0-4 hours OTL 1 Timed Override Hours 0-4 hours OVR_EXT 0 Accepting an Overri...

156 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS ALARMS01 Active Alarm ascii ALARM_01 ------------------------ ascii Active Alarm ascii ALARM_02 ------------------------ ascii Active Alarm ascii ALARM_03 ------------------------ asc...

160 APPENDIX B — CCN TABLES (cont) MAINTENANCE DISPLAY TABLES (cont) TIME SCHEDULE CONFIG TABLE Allowable Entries: Day not selected = 0 Day selected = 1 TABLE DISPLAY NAME RANGE UNITS POINT NAME WRITE STATUS TESTCOOL Compressor A1 Relay ON/OFF CMPA1TST test Compressor A2 Relay ON/OFF CMPA2TST test M...

161 APPENDIX C — VFD INFORMATION On variable air volume units with optional VFD, the supply fan speed is controlled by a 3-phase VFD. The VFD is located in the supply fan section behind a removable panel. The VFD speed is controlled directly by the Comfort Link™ controls through a 4 to 20 mA signal ...

162 APPENDIX C — VFD INFORMATION (cont) Table B — VFD Configurations VFD Operation — The VFD keypad is shown in Fig. B. The function of SOFT KEYS 1 and 2 change depending on what is displayed on the screen. The function of SOFT KEY 1 matches the word in the lower left-hand box on the display screen....

163 APPENDIX C — VFD INFORMATION (cont) 4. Use the UP or DOWN keys to highlight the desired parameter and press EDIT (SOFT KEY 2). 5. Use the UP or DOWN keys to change the value of the parameter. 6. Press SAVE (SOFT KEY 2) to store the modified value. Press CANCEL (SOFT KEY 1) to keep the previous v...

166 APPENDIX C — VFD INFORMATION (cont) Table C — Fault Codes FAULT CODE FAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION 1 OVERCURRENT Output current is excessive. Check for excessive motor load, insufficient acceleration time (parameters 2202 ACCELER TIME 1, default 30 seconds), o...

167 APPENDIX C — VFD INFORMATION (cont) Table D — Alarm Codes *This alarm is not indicated by a relay output, even when the relay output is configured to indicate alarm conditions, parameter 1401 RELAY OUT- PUT = 5 (ALARM) or 16 (FLT/ALARM). Check the heat sink as follows (when necessary): 1. Remove...

169 APPENDIX C — VFD INFORMATION (cont) Fig. F — Internal Enclosure Fan Replacement A48-7716

170 APPENDIX D — MODE SELECTION PROCESS The following section is to be used in conjunction with Fig. 4 on page 34. To help determine why the unit controls are in a certain mode, the programming logic is provided below. The software will proceed, step by step, until a mode is reached. If an “If” stat...

171 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. To Address the UPC Open Controller — The user must give the UPC Open controller an address that is unique on the BACnet...

172 APPENDIX E — UPC OPEN CONTROLLER (cont) Configuring the BAS Port for BACnet MS/TP — Use the same baud rate and communication settings 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. If the ...

173 APPENDIX E — UPC OPEN CONTROLLER (cont) To install a BT485 terminator, push the BT485 terminator, on to the BT485 connector located near the BACnet connector.NOTE: The BT485 terminator has no polarity associated with it. To order a BT485 terminator, consult Commercial Products i-Vu ® Open Contro...

174 APPENDIX E — UPC OPEN CONTROLLER (cont) Table D — Open System Wiring Specifications and Recommended Vendors LEGEND Local access to the UPC Open — The user can use a BACview 6 handheld keypad display unit or the Virtual BACview software as a local user interface to an Open control- ler. These ite...

175 APPENDIX E — UPC OPEN CONTROLLER (cont) Configuring the UPC Open Controller's Prop-erties — The UPC Open device and Comfort Link™ con- trols must be set to the same CCN Address (Element) number and CCN Bus number. The factory default settings for CCN Element and CCN Bus number are 1 and 0 respec...

176 APPENDIX E — UPC OPEN CONTROLLER (cont) NETWORK POINTS LIST See legend on page 182. BACNET OBJECT ID POINT NAME READ ONLY UNITS DEFAULT VALUE RANGE BACNET OBJECT NAME UNIT POINT AV:9 Active Demand Limit W % n/a 0-100 dem_lim_1 DEM_LIM AV:10 Air Temp Lvg Supply Fan R °F n/a n/a sat_1 SAT AV:11 CE...

183 INDEX Accessory control components 124 Accessory installation 7 Accessory Navigator™ display 4, 124 Airflow control during fire-smoke modes 66 Alarm output 31 Alarms and alerts 93 Alert limit configuration 72 Auto view of run status 90 Basic control usage 3-6 Building pressure configuration 63 B...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480077-01 Printed in U.S.A. Form 48/50A-9T Pg CL-1 6-10 Replaces: 48/50A-7T CONTROLS SET POINT AND CONFIGURATION LOG MODEL NUMBER: Softw...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480077-01 Printed in U.S.A. Form 48/50A-9T Pg CL-6 6-10 Replaces: 48/50A-7T Copyright 2010 Carrier Corporation - - - - - - - - - - - - -...