Carrier Omnizone 50BVC Installation, Start-Up, Service And Controls Operation And Troubleshooting
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Carrier Omnizone 50BVC Installation, Start-Up, Service And Controls Operation And Troubleshooting

Water-cooled indoor self-contained systems
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Installation, Start-Up, Service and Controls
Operation and Troubleshooting
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MAJOR CONTROL COMPONENTS . . . . . . . . . . . . . . 3
Constant Volume (CV) Units . . . . . . . . . . . . . . . . . . . 3
• UNIT PROTECTION MODULE (UPM)
Variable Air Volume (VAV) Units . . . . . . . . . . . . . . . . 4
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• UNIT STORAGE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1 — Check Equipment . . . . . . . . . . . . . . . . . . . . 4
Step 2 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 4
• UNIT LOCATION
• INSTALLATION GUIDELINES (ALL UNITS)
• UNIT PLACEMENT
• ACOUSTICAL CONSIDERATIONS
Step 3 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . 5
• SINGLE PIECE UNITS (50BVC,J,Q)
• MODULAR UNITS (50BVT,V,W)
• LOW BOY UNITS
• HIGH BOY UNITS
• REMOVE PACKAGING
• ASSEMBLING MODULAR UNITS
Step 4 — Install Ductwork . . . . . . . . . . . . . . . . . . . . 21
• DUCT STATIC PRESSURE PROBE AND TUBING
(VAV ONLY)
• DUCT HIGH-STATIC (DHS) LIMIT SWITCH (VAV
ONLY)
Step 5 — Make Piping Connections . . . . . . . . . . . . 22
• CONDENSER WATER PIPING
• EVAPORATOR CONDENSATE DRAIN
• HOT WATER HEATING COIL (OPTIONAL)
• WATERSIDE ECONOMIZER (OPTIONAL)
Step 5 — Complete Electrical Connections . . . . . . 25
• POWER WIRING
• CONTROL WIRING (CV ONLY)
• SUPPLY AIR TEMPERATURE SENSOR (SAT)
• SMOKE DETECTOR/FIRE ALARM SHUTDOWN (FSD)
• REMOTE OCCUPANCY (ROCC)
• RETURN AIR TEMPERATURE (RAT) SENSOR
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
• CRANKCASE HEATERS
• CONFIRM THE INPUT POWER PHASE SEQUENCE
• INTERNAL WIRING
• RETURN-AIR FILTERS
• COMPRESSOR MOUNTING
• REFRIGERANT SERVICE PORTS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500190-01
Page
Printed in U.S.A.
Form 50BV-6SI
Indoor Self-Contained Systems
• WATER PIPING
CV Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
• EVAPORATOR FAN
• COOLING
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Unit Protection Module (UPM) . . . . . . . . . . . . . . . . .33
• GENERAL DESCRIPTION
• FEATURES AND SAFETIES
Sequence of Operation,
CV Units — 50BVC,Q,T,V . . . . . . . . . . . . . . . . . . .35
• WATER ECONOMIZER COOLING
• Y CALL (COOLING OR HEATING)
I/O Flex 6126 Controller Specifications . . . . . . . . . .37
• POWER
• PHYSICAL
• ENVIRONMENTAL OPERATING RANGE
• DIGITAL OUTPUTS
• ANALOG OUTPUTS
• UNIVERSAL INPUTS
• STANDARD COMMUNICATION PORTS
• RNET PORT
• LOCAL ACCESS PORT
• XNET PORT
• BACNET SUPPORT
• STATUS INDICATION
• BATTERY
• PROTECTION
• LISTED BY
• WEIGHT
• OVERALL DIMENSIONS
• MOUNTING HOLE DIMENSIONS
Addressing the I/O Flex 6126 Controller . . . . . . . . .37
BACnet Protocol Selection . . . . . . . . . . . . . . . . . . . .37
Wiring Inputs and Outputs . . . . . . . . . . . . . . . . . . . .38
Input – I/O Flex 6126 Controller . . . . . . . . . . . . . . . .38
• BINARY OUTPUTS
• ANALOG OUTPUTS
• TO WIRE FIELD ACCESSORIES ON THE I/O FLEX
6126 CONTROLLER OR I/O FLEX EX8160 EXPANDER
I/O Flex EX8160 Expander Module . . . . . . . . . . . . . .41
• GENERAL DESCRIPTION
VAV Control Parameters, Status, and Alarms . . . . .41
Sequence of Operation, VAV Units Only
50BVJ,W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
• CONTROL SOURCE (RUN CONDITIONS)
• EXTERNAL CONTROL SOURCE
• DIGITAL INPUT
• BAS
• MANUAL ON
• INTERNAL CONTROL SOURCE (KEYPAD)
Unit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Pg 1
Omnizone™
50BV020-064
Water-Cooled
11-21
Replaces: 50BV-5SI

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  • Page 1 Omnizone™ 50BV020-064 Water-Cooled Indoor Self-Contained Systems Installation, Start-Up, Service and Controls Operation and Troubleshooting • WATER PIPING CONTENTS CV Unit Start-Up ......33 Page •...

  • Page 2: Table Of Contents

    • DAYLIGHT SAVINGS TIME Fan Modes ....... . . 43 •...
  • Page 3 product. Refer to the individual instructions packaged with the kits source units are shipped fully charged with Puron ® (R-410A) or accessories when installing. refrigerant. Each unit is equipped with one or two forward-curved centrifugal blowers, to ensure quiet air delivery to the conditioned space. WARNING Constant volume units are equipped with a non-inverter rated sup- Before performing service or maintenance operations on unit,...
  • Page 4 Prior to proceeding with installation or rigging, verify the follow- Variable Air Volume (VAV) Units ing: The 50BVJ and W units come equipped with a Carrier I/O Flex Make sure the equipment received is the correct capacity, 6126 controller with expander module and a supply fan VFD, in configuration, and voltage, compared to the unit submittals or addition to the UPM.
  • Page 5 Single piece units are shipped as an entire assembly with factory refrigerant charge. Single piece units are not designed to be disas- Please refer to the Carrier Commercial WSHP Warranty sembled for rigging. Use spreader bars and rigging straps if lifting Statement (document number 04-570008-01) for details on with a crane to avoid damage to the unit.
  • Page 6 dimensions. The filter rack/economizer section of the low boy unit can be field removed for easier installation. See Fig. 4 and 5 for low boy field splits. HIGH BOY UNITS 50BV high boy units are tall and thin and ship in two (034) or four (044-064) modules that require field assembly (fan section and main section).
  • Page 7 1 & 3 NOTES: 1. The filter rack modules (item 3) can be field removed from the compressor/ evaporator module to reduce unit size, as shown above. 2. Dimensions in inches. Fig. 2 — High Boy Field Split - 30 Ton Fig.
  • Page 8 NOTES: 1. The filter rack modules (item 2) can be field removed from the compressor/ evaporator module to reduce unit size, as shown above. 2. Dimensions in inches. Fig. 4 — Low Boy Field Split - 30 Ton...
  • Page 9 1 & 3 2 & 4 Fig. 5 — Low Boy Field Split - 40-60 Ton...
  • Page 10 Blower Wheel/Housing** 18” Minimum 24” Optimum Blower Wheel/Housing** 18” Minimum Blower Blower 24” Optimum Blower Motor** Sheave/Pulley/Belt Access 18” Minimum 24” Optimum Blower Motor** Sheave/Pulley/Belt Access 18” Minimum Blower Blower 24” Optimum Motor Motor Compressor Compressor Electrical Control Compressor Access and Electrical/Control Access 36”...
  • Page 11 FRONT RETURN OPTIONAL BLOWER STANDARD BLOWER ORIENTATION ORIENTATION 6.00 9.00 20.00 24.00 34.00 14.00 2.00 4.50 28.00 34.00 10.00 17.50 28.00 7.00 CONDENSER WATER OUT CONDENSATE DRAIN CONDENSER WATER IN HEIGHT BLOWER MOTOR ORIENTATION 80.00 32.00 22.00 ELECTRICAL CONNECTIONS REAR SUPPLY TOP SUPPLY OPTIONAL BLOWER REAR RETURN...
  • Page 12 SEE NOTE (1) 69.50 51.63 2.00 BLOWER BLOWER SECTION BLOWER SECTION SECTION REMOVABLE FOR REMOVABLE FOR ACCESS SHIPPING SHIPPING BLOWER 31.00 SECTION ACCESS 54.38 VOLTAGE HIGH VOLTAGE COMPRESSOR ACCESS 3.95 15.00 13.00 10.95 8.95 1.50 REAR VIEW 5.00 LIFTING SUPPORT RAIL RETURN AIR VIEW 2.88 23.25...
  • Page 13 69.50 64.75 2.00 2.00 65.50 2.88 FILTER BLOWER ACCESS SECTION 65.50 ACCESS EVAPORATOR ACCESS 81.50 COMPRESSOR ACCESS 3.75 15.00 13.00 10.75 8.75 REAR VIEW 1.50 5.00 LEFT SIDE VIEW RETURN AIR VIEW 23.25 FRONT DISCHARGE 9.88 9.88 49.75 1.50 21.75 HOT WATER OUT FILTER ACCESS ECONO COIL...
  • Page 14 SEE NOTE (4) 139.00 69.50 2.00 51.63 9.88 9.88 49.75 49.75 BLOWER 21.75 21.75 SECTION ACCESS 31.00 23.75 18.75 119.75 60.63 90.25 VOLTAGE HIGH VOLTAGE 17.50 15.50 13.25 11.25 COMPRESSOR COMPRESSOR ACCESS ACCESS 5.00 2.88 23.25 2.50 LEFT SIDE VIEW REAR VIEW RETURN AIR LIFTING SUPPORT RAIL BLOWER SECTION...
  • Page 15 SEE NOTE (4) FILTER BLOWER ACCESS SECTION ACCESS EVAPORATOR ACCESS COMPRESSOR COMPRESSOR ACCESS ACCESS REMOVABLE REMOVABLE FOR SHIPPING FOR SHIPPING HOT WATER OUT FILTER ACCESS OPTIONAL ECONO. COIL DX EVAPORATOR OPTIONAL HOT WATER COIL OPTIONAL ECONO. COIL FILTER ACCESS DX EVAPORATOR HOT WATER IN WATER IN COMPRESSOR...
  • Page 16 4.75 80.00 [83] [121] [2032] 9.00 24.00 14.00 24.00 [229] [610] [356] [610] 10.00 [254] 32.00 WATER WATER [813] VOLTAGE CONTROL BOX FILTER RACK TOP VIEW CONTROLLER DRAIN COMPRESSOR HIGH ACCESS 32.00 4.00 ACCESS VOLTAGE [813] [102] FRONT VIEW 3.25 [83] 7.25 [184]...
  • Page 17 80.00 [2032] 3.50 5.50 [89] [140] 24.00 9.00 24.00 14.00 [610] [229] [610] [355] 10.00 [254] 5.00 [127] 32.00 [813] TOP VIEW FILTER RACK 32.00 1.50 [813] [38] WATER WATER CONTROL BOX VOLTAGE CONTROLLER DRAIN COMPRESSOR ACCESS ACCESS HIGH VOLTAGE FRONT VIEW 3.50 [89]...
  • Page 18 80.00 92.13 [2340] [2032] 9.00 24.00 14.00 24.00 3.25 4.75 [229] [610] [356] [610] [83] [121] 2-1/8" O.D. (2 PLCS) 2-1/8" O.D. (2 PLCS) SWEAT CONNECTIONS SWEAT CONNECTIONS 32.00 2-1/8" O.D (2 PLCS) [813] TOP VIEW SWEAT CONNECTIONS FILTER RACK WATER WATER VOLTAGE...
  • Page 19 80.00 [2032] 3.50 5.50 9.00 24.00 14.00 24.00 [89] [140] [229] [610] [355] [610] 5.00 [127] 2-1/8" OD. (2 PLCS) 2-1/8" OD. (2 PLCS) SWEAT CONNECTIONS SWEAT CONNECTIONS TOP VIEW WATER WATER VOLTAGE CONTROL BOX DRAIN CONTROLLER COMPRESSOR HIGH ACCESS ACCESS VOLTAGE FRONT VIEW...
  • Page 20 Table 2 — Physical Data — 50BVC,J,Q UNIT 50BVC,J,Q NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb) 1090 1310 1530 1650 50BVC,Q…50BVJ COMPRESSOR Copeland Scroll Quantity Number of Refrigerant Circuits REFRIGERANT TYPE R-410A Expansion Device Operating Charge (oz) per Ckt CONDENSER (50BVC,Q,J only) Tube-in-Tube Coaxial Quantity of Manifolded Coils Nominal Flow Rate (gpm)
  • Page 21 All dual fan units are required to use a “pair of pants” configura- able system static pressure. If the existing duct system is too small, tion as shown in Fig. 16. Refer to the Carrier System Design Man- larger ductwork must be installed.
  • Page 22 DUCT HIGH-STATIC (DHS) LIMIT SWITCH (VAV ONLY) Table 4, which lists freezing points of glycol at different concen- trations. A minimum concentration of 20% is recommended. The duct high static limit switch is a field provided mechanical Water pressure drop will increase and unit performance will de- safety that prevents duct over pressurization.
  • Page 23 Ball valves should be installed in the supply and return lines for HOT WATER HEATING COIL (OPTIONAL) unit isolation and water flow balancing. A factory-installed one or 2-row hot water heating coil is available Pressure and temperature ports are recommended in both the sup- as an option.
  • Page 24 Table 7 — Hot Water Pressure Drop Table 9 — Economizer Pressure Drop Curve 50BVC,J,Q Units (ft wg), 50BVC,J,Q Units SIZE 020 SIZE 024 SIZE 028 SIZE 034 FLOW RATE SIZE 020 SIZE 024 SIZE 028 SIZE 034 FLOW RATE (GPM) PRESSURE DROP (FT WG) (GPM)
  • Page 25 3-WAY MOTORIZED BALL VALVE WATERSIDE ECONOMIZER N.C. COIL N.O. AQUASTAT FLUID TO REFRIGERANT N.O. HEAT EXCHANGER FLUID IN “BULB STRAPPED TO FLUID” IN LINE (FIELD INSTALLED) POSITIVE SHUT-OFF SOLENOID VALVE FOR VARIABLE SPEED PUMPING SYSTEM (FIELD INSTALLED) Fig. 19 — Optional Water Economizer (found in the Troubleshooting section) and be certain to connect Step 5 —...
  • Page 26 Install the thermostat in the space where the temperature is being For units with cycling (on/off) HGRH, connect the thermostat controlled, according to the instructions provided with the thermo- H output to the H terminal on the 50BV. Set up the thermostat stat.
  • Page 27 FIELD-SUPPLIED THERMOSTAT UNIT MODULE ‘A’ UNIT MODULE ‘B’ Remote Condenser Units Only (#1) FC1-4 FC1-5 (#2) FC1-4 FC1-5 LEGEND FC — Fan Contactor PR — Pilot Relay Fig. 21 — Typical Wiring 40 to 60 Ton Units (Two-Stage Cooling)
  • Page 28 Table 11 — Electrical Data — with Belt Drive Motor (50BVC,Q) COMPRESSOR INDOOR FAN MOTOR POWER SUPPLY RATED VOLTAGE MODELS MOTOR MOTOR MAX FUSE/ VOLTAGE MIN/MAX CIRCUIT (EACH) (EACH) (EACH) HACR AMPS 29.5 195.0 76.0 29.5 195.0 78.8 208-230/3/60 197/253 29.5 195.0 82.4...
  • Page 29 Table 12 — Electrical Data — with Belt Drive Motor, Inverter Duty (50BVJ) COMPRESSOR INDOOR FAN MOTOR POWER SUPPLY RATED VOLTAGE MODELS MOTOR MOTOR MAX FUSE/ VOLTAGE MIN/MAX CIRCUIT (EACH) (EACH) (EACH) HACR AMPS 208-230/3/60 197/253 29.5 195.0 78.8 208-230/3/60 197/253 29.5 195.0...
  • Page 30 Table 13 — Electrical Data — with Belt Drive Motor, Inverter Duty* (50BVV,W,T) COMPRESSOR INDOOR FAN MOTOR POWER SUPPLY RATED VOLTAGE MODELS MOTOR MOTOR VOLTAGE MIN/MAX CIRCUIT FUSE/ (EACH) (EACH) (EACH) AMPS HACR 208-230/3/60 197/253 55.8 19.4 145.0 208-230/3/60 197/253 55.8 25.2 150.8...
  • Page 31 SAT sensor. The field supplied supply air temperature sensor should be a duct probe style thermistor (Carrier P/N 33ZCSENPAT) with a 10K- type II resistance output curve (10K ohm at 77°F) that is wired back to IN-6 of the unit controller. The duct probe sensor should be installed in the supply duct at least 10 ft away from the unit or any heat sources.
  • Page 32 Table 15 — Thermistor Resistance vs Temperature Values for Supply-Air and Return Air Temperature Sensor (10,000 ohms) TEMP TEMP RESISTANCE TEMP TEMP RESISTANCE TEMP TEMP RESISTANCE (OHMS) (OHMS) (OHMS) -39.44 323,839 2.78 28,365 45.00 4,367 -38.33 300,974 3.89 26,834 46.11 4,182 -37.22 279,880...
  • Page 33 REFRIGERANT SERVICE PORTS The main purpose of this device is to protect the compressors by monitoring the different states of switches and sensors of each re- Each refrigerant system has a total of 2 Schrader-type service gage frigerant circuit. This device provides time delays and protects the ports per circuit.
  • Page 34 Fig. 24 — Two-Stage Unit Protection Module High Pressure Protection this period of time, the compressor will shut down and the UPM will start a soft lockout. The UPM will flash 2 times for the LP1 If the HP1 or HP2 switches are open upon a Y1 or Y2 call, the and 4 times for the LP2 and the alarm contact will remain off.
  • Page 35 brownout condition, its fault LED will flash 7 times as error code indication. LOCKOUT Condensation Overflow RESET The UPM controller continuously monitors the drain pan for high condensate water level. To do so it utilizes a sensor which, when ALARM condensate sensor option is present, identifies an alarm condition when the sensor’s impedance drops below 230,000 ±...
  • Page 36 Fig. 27 — UPM Sequence of Operation (SOO) Flow Chart...
  • Page 37 BATTERY I/O Flex 6126 Controller Specifications 10-year Lithium 3 v coin cell battery, CR2032, provides a mini- POWER mum of 10,000 hours of data retention during power outages. 24 vac ± 10%, 50 to 60 Hz, 20 va power consumption (26 va with PROTECTION BACview tool attached): 26 Vdc (25 V min, 30 V max)
  • Page 38 Wiring Inputs and Outputs Refer to Table 17 for wiring inputs and outputs. Table 17 — Input Wiring Specifications INPUT MAXIMUM LENGTH MINIMUM GAGE SHIELDING 0-5 VDC 1000 feet 26 AWG Shielded 0-10 VDC (305 meters) 3000 feet 0-20 mA 26 AWG Shielded or unshielded (914 meters)
  • Page 39 Table 20 — 50BVJ,W Standard I/O Table CONNECTION I/O TYPE INPUT /OUTPUT TYPE TYPICAL DEVICE TYPE OF I/O CONFIG NUMBERS I/O FLEX 6126 Controller Inputs Occupancy Override * Dry Contact (N.O) UI (0-10 V, RTD Therm/Dry, 0-20 mA) UI-12 - 19 & 20 Duct Static Pressure Sensor 0 -5 VDC UI (0-10 V, RTD Therm/Dry, 0-20 mA)
  • Page 40 Table 20 — 50BVJ,W Standard I/O Table (cont) CONNECTION I/O TYPE INPUT /OUTPUT TYPE TYPICAL DEVICE TYPE OF I/O CONFIG NUMBERS I/O FLEX EX8160 Expander Inputs Open UI (0-5 V, Therm Dry) IN-16 - 15 & 16 Open UI (0-5 V, Therm Dry) IN-15 - 13 &...
  • Page 41 Connect the analog output wiring to the screw terminals on VAV Control Parameters, Status, and Alarms the I/O Flex 6126 controller and to the controlled device Control (Fig. 30). • Integral occupancy schedule • External occupancy control: Manual ON, BAS command, or DI Enable •...
  • Page 42 Fig. 31 — I/O Flex 6126 Controller Input Modes and Diagram...

  • Page 43: Fan Modes

    Unit Mode 50BV VAV units are configured with DX cooling and modulating HGRH. The selected unit mode in the 50BV controller should be Discharge Air control. Other modes are not applicable and can cause operational issues. Fan Modes The Fan mode option is used to select the type of fan hardware be- ing used with the unit.

  • Page 44: Vfd Control

    VFD CONTROL • The filter timer may be reset upon the filter being serviced. The following applies for VFD Control: WATER DIFFERENTIAL PRESSURE SWITCH (DPS) • Variable frequency drive fan control requires a static pres- The differential pressure switch is applied to a unit for which the sure measurement.
  • Page 45 Table 22 — VFD Factory Default Settings ABB 550 DRIVE FACTORY CONFIGURATION VFD 1 GROUP NUMBER PARAMETER NUMBER DESCRIPTION VALUE 9902 Application Macro HVAC Default 9904 Motor control Mode Scalar 9905 Motor Nominal Voltage 9906 Motor Nominal Current 9907 Motor Nominal Frequency 9908 Motor Nominal Speed 9909...
  • Page 46 Table 23 — VFD Factory Default Settings (cont) ABB 550 DRIVE FACTORY CONFIGURATION VFD 1 GROUP NUMBER PARAMETER NUMBER DESCRIPTION VALUE 1050s 3006 Motor Thermal Time 3007 Motor Load Curve 100% 3008 Zero Speed Load 3009 Break Point Frequency 35Hz 3010 Stall Function NOT SEL...
  • Page 47 *Refer to Motor name plate. Table 24 — VFD Factory Default Settings (cont) DRIVE FACTORY CONFIGURATION VFD 2 GROUP NUMBER PARAMETER NUMBER DESCRIPTION VALUE 9902 Application Macro HVAC Default 9904 Motor control Mode Scalar 9905 Motor Nominal Voltage 9906 Motor Nominal Current 9907 Motor Nominal Frequency 9908...
  • Page 48 Table 25 — FD Factory Default Settings (cont) DRIVE FACTORY CONFIGURATION VFD 2 GROUP NUMBER PARAMETER NUMBER DESCRIPTION VALUE 1050s 3006 Motor Thermal Time 3007 Motor Load Curve 100% 3008 Zero Speed Load 3009 Break Point Frequency 35Hz 3010 Stall Function NOT SEL 3011 Stall Frequency...

  • Page 49: Cooling Mode

    For discharge air control applications the minimum on-times and The cooling stages can be reset based on a single point or multiple off-times in Table 26 are applicable: return air temperature (RAT) values as indicated in Table 27: Table 26 — Discharge Air Control Table 27 —...

  • Page 50: Waterside Economizer Mode

    Since the controller interprets this as an issue that needs technical Leaving Water Temperature Alarm occur, the call for cool- assistance, the unit can only be reset from its HMI BACview tool. ing will be removed. WATERSIDE ECONOMIZER MODE UPM Fault Monitor If the entering water temperature is less than the set point 55°F The controller will monitor both Unit Protection Modules (UPM1 (adjustable) the unit will transition to economizer mode:...

  • Page 51: 50Bvj And 50Bvw Controls

    Table 29 — Run and Error LEDs IF RUN LED SHOWS... AND ERROR LED SHOWS... STATUS IS... Normal 2 flashes, alternating with Run LED Five minute auto-restart delay after system error 3 flashes, then off The controller has just been formatted 2 flashes per second Two or more devices on this network have the same ARC156 network 4 flashes, then pause...
  • Page 52 Virtual BACview (see Fig. 34) provides the end-user an interface to a controller using a laptop. It uses the dongle/cable assembly found in the technician tool kit (TECH-TKIT) to connect from a USB port on the laptop to the Rnet port on the 6126 controller. The Row Count: field is for configuring the number of lines on the screen.

  • Page 53: Hotkeys

    While navigating through the screens, certain values can be The "+" sign on the left side of the screen indicates that the changed (e.g., setpoints, counters, sensor offset, etc.). To change ARC156 protocol is active. To change to MS/TP: the value, move the brackets to the value to be changed and press Move the bracket to the ARC156 number and press ENTER.

  • Page 54: Modulating Hot Gas Re-Heat

    MODULATING HOT GAS RE-HEAT Table 34 — Calibration Screen Functions Access: Tuning Parameters Screen,[RH PID] softkey The Modulating Hot Gas Re-Heat screen (see Fig. 41) allows the FIELD / KEY FUNCTION / INFORMATION user to change the MHGRH Sample Time, Proportional, Integral Displays the existing temperature on the and Derivative gains, plus the Loop dead band and the Ramp LVG Water Sensor Offset...

  • Page 55: Alarm

    To change the analog outputs: ALARM Move the brackets to the appropriate output and press Access: Home screen [Alarm] softkey ENTER. The screen softkeys will appear, allowing the value Hotkey Access: to be changed. Handheld BACview: Fn + 4 Click the [INCR] or [DECR] softkey to change the Virtual BACview: Ctrl + 4 value.

  • Page 56: Unit Operation

    UNIT OPERATION ARCHIVE-COMMISSIONING Access: Home screen Access: Unit Operation SetPoint screen, [Archive] softkey The Unit Operation screen (see Fig. 47) shows the current unit The Archive-Commissioning screen (see Fig. 48) allows the user operation status. to save the unit configuration. Fig.

  • Page 57: Unit Operation Setpoint

    UNIT FAN Click the [PREV] softkey to return to the Unit Operation screen or click the [Archive] softkey to access the Archive- Access: Home Screen Commissioning screen. See Table 39 for screen function The Unit Fan screen (see Fig. 50) allows the user to view all the information.

  • Page 58: Supply Fan Lockouts

    SUPPLY FAN LOCKOUTS To reset the High Static Counter Total and High Static Counter 1-Hour values: Access: Unit Fan screen, [Switch] softkey Move brackets onto "No" on the High Static Counter Reset The Supply Fan Lockouts screen (see Fig. 52) allows the user to line, and press ENTER.

  • Page 59: Smoke Detector

    SMOKE DETECTOR STATIC PRESSURE Access: Fan Setpoints screen, [Smoke] softkey Access: Fan Setpoints screen, [Stat Press] softkey The Smoke Detector screen (see Fig. 54) allows the user to view The Static Pressure screen (see Fig. 55) allows the user to view the the status of the smoke detector and the input.

  • Page 60: Return Fan Lockouts

    RETURN FAN LOCKOUTS Access: Return Duct Static Pressure screen, [Switch] softkey The Return Fan Lockouts screen (see Fig. 57) will not have any significance since there is no return fan on a 50BV unit. Fig. 57 — Return Fan Lockouts Screen Click the [PREV] softkey to return to the Return Duct Static Pressure screen or click the [Help] softkey to access the Help screen.

  • Page 61: Upm2 Faults

    UPM2 FAULTS Table 45 — UPM Faults Screen Functions Access: UPM FAULTS screen, [UPM2] softkey The UPM2 Faults screen (see Fig. 60) allows the user to view the FIELD / KEY FUNCTION / INFORMATION current status of the UPM board and to view the safeties connect- Reset UPM now? Allows the user to reset the Unit Protection ed to the UPM board.

  • Page 62: Alarm Config

    ALARM CONFIG Table 46 — UPM2 Faults Screen Functions Access: Home Screen The Alarm Config screen (see Fig. 61) allows the user to view and FIELD / KEY FUNCTION / INFORMATION set the different trip points for the unit. Reset UPM now? Allows the user to reset the Unit Protection (adjustable) Module (UPM)

  • Page 63: Discharge Air

    Click the [PREV] softkey to return to the Home screen or click COOLING DISCHARGE AIR CONTROL PID the [DAT] softkey to access the DISCHARGE AIR screen. See Access: Discharge Air screen, [CLG PID] softkey Table 48 for screen function information. The Cooling Discharge Air Control PID screen (see Fig.

  • Page 64: Temperature Setpoint

    CONDENSER WATER VALVE Table 51 — Temperature Screen Functions Access: Temperature Setpoint screen, [CMV] softkey The Condenser Water Valve screen (see Fig. 67) allows the user to FIELD / KEY FUNCTION / INFORMATION view the condenser water valve status. It also allows the user to Supply Air Temperature Displays the current Supply Air change the condenser water valve delay time and to enable the...
  • Page 65 Table 54 — Heating/Cooling Screen Functions Table 54 — Heating/Cooling Screen Functions [Alarm] Softkey access to the Alarm screen FIELD / KEY FUNCTION / INFORMATION [Stpt] Softkey access to the Setpoint screen Current Mode Displays the current operating mode of the (non-adjustable) unit HEATING/COOLING SETPOINT...

  • Page 66: Schedule

    To reset compressor starts and/or runtimes: WEEKLY SCHEDULE Move the brackets to the value that needs resetting and press View and Edit Daily Schedule screen, select [Day], press ENTER. ENTER Click on the [DECR] or the [INCR] softkeys to change the The Weekly Schedule screen (see Fig.

  • Page 67: Bacnet

    BACNET DAYLIGHT SAVINGS TIME Access: Home screen Hotkey Access: Hotkey Access: Handheld BACview: Fn + 3 Handheld BACview: Fn + 5 Virtual BACview: Ctrl + 3 Virtual BACview: Ctrl + 5 The Daylight Savings Time screen (see Fig. 77) allows the values for daylight savings time to be changed.

  • Page 68: Keypad Configuration

    KEYPAD CONFIGURATION Hotkey Access: BACview: Fn + 6 Virtual BACview: Ctrl + 6 The Keypad Configuration screen (see Fig. 79) allows the value for the time the BACview handheld keypad is kept lit. Fig. 79 — Keypad Configuration Screen Move the bracket using the arrow keys to the value that needs to be changed.

  • Page 69: Service

    Fan Motor Replacement If required, replace the fan motor with an equal or better type and efficiency motor with equal horsepower. The motor must be rated for a VFD or inverter application. Do not change the horsepower unless there is a system design requirement change and VFD size analysis.

  • Page 70: Condensate Drains

    Condensate Drains Clean the drain line and unit drain pan at the start of each cooling season. Check flow by pouring water into the drain. Water-Cooled Condensers Water-cooled condensers may require cleaning of scale (water de- posits) due to improperly maintained closed-loop water systems. Sludge build-up may need to be cleaned in an open tower system due to inducted contaminants.

  • Page 71: Fan Bearing Lubrication

    Fan Bearing Lubrication Inspect the fan bearings for proper lubrication every 6 month or 2500 hours of operation, whichever comes first. Standard units have grease fittings on the fan shaft bearings, located on each side of the blower wheel. Lubricate bearings with a lithium-based grease (NLGI Grade 2).

  • Page 72: Compressor Oil

    LB FORCE DEFLECTION Fig. 88 — Fan Belt Tension Compressor Oil All units are factory charged with oil. It is not necessary to add oil unless compressor(s) is removed from the unit. If necessary, oil can be removed/charged via Schrader fitting. Operate the system at high evaporator temperature prior to oil recharge to assist oil re- turn to the compressor(s) from other system components.
  • Page 73 Table 63 — Unit Troubleshooting PROBLEM POSSIBLE CAUSE CORRECTION PROCEDURE Unit Will Not Start. Loss of unit power Check power source. Check fuses, circuit breakers, disconnect switch. Check electrical contacts. Unit voltage not correct Check and correct. Open fuse Check for short circuit in unit. Open protection device Check relays (phase monitor option), contacts, pressure switches.

  • Page 74: Schematics

    Table 64 — CV Units LED Diagnostic Codes SCHEMATICS Refer to Fig. 89-93 for voltage and wiring schematics. NO. OF BLINKS DESCRIPTION 1st Stage High-Pressure Lockout 1st Stage Low-Pressure Lockout 2nd Stage High-Pressure Lockout 2nd Stage Low-Pressure Lockout Freeze Protection Lockout* Condensate Overflow Lockout* *Freeze protection and condensate overflow lockout require optional sensors.
  • Page 78 a50-8215...

  • Page 80: Sensors And Integration Points

    SENSORS AND INTEGRATION POINTS Refer to Table 65 for factory-provided sensors and Table 66 for a detailed integration points list. Table 65 — Factory-Provided Sensors for VAV Units 50BVJ,W UNIT DESCRIPTION SHIPPING LOCATION INSTALLATION LOCATION Supply Air Temperature sensor loose for field installation Supply air stream Return Air Temperature Sensor loose for field installation...
  • Page 81 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Network Alarm indicat- ing compressor is run- C1_HAND Discrete Input comp1_hand Select ning but the controller is...
  • Page 82 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE nviC- Compressor 1 Runtime Comp1 Runtime cmp1_rnt- Coil mp1Rn- SNVT_switch(95) Reset.
  • Page 83 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Network Status of Cool- Input Register SNVT_count_inc( Cooling Percentage clg_pct nvoClgPct ing Demand in percent- (Float)
  • Page 84 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Hot Gas Reheat Modu- Eff HGR Mod Valve Input Register eff_hgr_- nvoEffHgr- SNVT_lev_per-...
  • Page 85 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE UPM Board 2 High Pres- sure Alarm Status for nvoHp2Ala Compressor 3 Discrete Input hp2_2st...
  • Page 86 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Outside Air Temperature (Stage 2 Cooling) Opera- Holding Regis- nviO- SNVT_count_inc( OAT Reset 3 oat_reset3...
  • Page 87 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Network Parameter to set Return Air Tempera- RAT Reset Selec- Holding Regis- ture Selection rat_sel...
  • Page 88 Table 66 — Integration Points List (cont) PROTOCOL MAP MODBUS BACNET LONWORKS OPERATION READ/ REGISTER REGISTER REFERENCE OBJECT OBJECT DISPLAY NAME NV NAME SNVT DESCRIPTION WRITE TYPE NUMBER NAME TYPE Network Parameter to Static Press Set Holding Regis- sta_- nviSta- SNVT_- set the Duct Static Pres- point...
  • Page 90 © 2021 Carrier 8733830976 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500190-01 Printed in U.S.A. Form 50BV-6SI Pg 90 11-21 Replaces: 50BV-5SI...

  • Page 91: Start-Up Checklist

    START-UP CHECKLIST (Fill out this form on Start-Up and file in job folder 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 Installation, Start-Up, Service and Controls Operation and Troubleshooting document.
  • Page 92 HOT GAS BYPASS SETTING COMPRESSOR AMPS: SUPPLY FAN AMPS: NOTES: _______________________________________________________________________________________ _______________________________________________________________________________________________ © 2021 Carrier 8733830976 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500190-01 Printed in U.S.A.

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