Trane BCXC-SVX01B-EN - Manuals

Page 2 - Warnings, Cautions and Notices; Note that warnings, cautions and notices appear at; Responsible Refrigerant Practices!; death or serious injury.

© 2008 Trane All rights reserved BCXC-SVX01B-EN Warnings, Cautions and Notices Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at appropriate intervals throughout this manual. Warnings are provide to alert installing contractors to potential hazards that could result ...

Page 4 - Introduction; About This Manual

Introduction 4 BCXC-SVX01B-EN About This Manual Use this manual for commercial blower coil models BCHC and BCVC. This is the second version of this manual; this manual supercedes BCXB-SVX01A-EN. It provides specific installation, operation, and maintenance instructions for “AO” and later design sequ...

Page 5 - Table of Contents

Table of Contents BCXC-SVX01B-EN 5 Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Pre-Installation . ....

Page 7 - Model Number Description

BCXC-SVX01B-EN 7 Following is a complete description of the blower coil model number. Each digit in the model number has a corresponding code that identifies specific unit options. Digits 1, 2, 3, 4 — Unit Model BCHC= horizontal blower coilBCVC= vertical blower coil Digits 5, 6, 7 — Unit Size Digit ...

Page 9 - General Information; Blower Coil General Information; Figure 1

BCXC-SVX01B-EN 9 General Information Blower Coil General Information Blower coil units are draw-thru air handlers for cooling load conditions of 400–3000 cfm. Units are available in either horizontal (model BCHC) or vertical (model BCVC) configurations. Horizontal units are typically ceiling suspend...

Page 10 - for drive information.

10 BCXC-SVX01B-EN General Information a control valve and stop (ball) valves. The deluxe package consists of a control valve, a stop (ball) valve, a circuit setter, and strainer. Belt-drive motors range from 1/3 to 3 horsepower in a wide range of voltages. All motors have internal thermal and curren...

Page 11 - Receiving and Handling; Shipping Package; Jobsite Storage Recommendations; canvas tarp

BCXC-SVX01B-EN 11 Pre-Installation Receiving and Handling Blower coil units are packaged for easy handling and storage on the job site. Upon delivery, inspect all components for possible shipping damage. See the “Receiving Checklist” section (below) for detailed instructions. Trane recommends leavin...

Page 12 - See

12 BCXC-SVX01B-EN Pre-Installation Installation Preparation Before installing the unit, perform the following procedures to ensure proper unit operation. 1. Verify the floor or foundation is level. Shim or repair as necessary. To ensure proper unit operation, install the unit level (zero tolerance) ...

Page 13 - Rigging and Handling; “Dimensions and Weights,”; Unit Handling Procedure; long to safely fork the unit from front or back.; Unit Location Recommendations

BCXC-SVX01B-EN 13 Pre-Installation Rigging and Handling Before preparing the unit for lifting, estimate the approximate center of gravity for lifting safety. Because of placement of internal components, the unit weight may be unevenly distributed, with more weight in the coil area. Approximate unit ...

Page 14 - “Dimensions; Skid Removal; Pre-Installation Checklist

14 BCXC-SVX01B-EN Pre-Installation 1. Consider the unit weight. Reference the unit weight on the unit nameplate or in “Dimensions and Weights,” p. 15 . 2. Allow sufficient space for the recommended clearances, access panel removal, and maintenance access. Refer to Figure 2, p. 13 . 3. The installer ...

Page 15 - Dimensions and Weights; Horizontal Blower Coil

BCXC-SVX01B-EN 15 Dimensions and Weights Horizontal Blower Coil Table 2. Horizontal blower coil dimensions (in.) and weights (lb) Unit size H W L A B C D E F G (RH) G (LH) J (RH) J (LH) K M P Q Basic unit weight 12 14.00 24.00 39.75 12.09 18.00 10.56 7.09 0.55 3.00 11.42 13.42 9.42 11.42 4.20 8.46 9...

Page 16 - Vertical Blower Coil

16 BCXC-SVX01B-EN Dimensions and Weights Vertical Blower Coil Table 3. Vertical blower coil dimensions (in.) and weights (lb) Unit size H W L A B C D E F G (RH) G (LH) J (RH) J (LH) K M N P Q R Basic unit weight 24 63.50 28.00 44.00 16.09 22.00 13.56 12.56 1.30 3.00 11.42 13.42 9.42 11.42 6.20 5.50 ...

Page 17 - Angle Filter and Mixing Box

BCXC-SVX01B-EN 17 Dimensions and Weights Angle Filter and Mixing Box Table 4. Angle filter and mixing box dimensions (in.) and weights (lb) Unit size H L W A B Weight 12 14.12 22.00 24.11 7.06 15.56 36.0 16 14.12 22.00 28.11 7.06 19.56 41.0 24 18.12 19.50 28.11 7.06 19.56 43.0 36 18.12 24.50 40.11 7...

Page 18 - Bottom or Top Access Filter Box

18 BCXC-SVX01B-EN Dimensions and Weights Bottom or Top Access Filter Box Table 5. Bottom or top access filter box dimensions (in.) and weights (lb) Unit size H W A B C D Weight 12 14.00 24.00 9.98 2.01 18.23 2.88 15 18 14.00 28.00 9.98 2.01 21.98 3.01 17 24 18.00 28.00 14.23 1.89 23.23 2.38 18 36 18...

Page 19 - Electric Heat

BCXC-SVX01B-EN 19 Dimensions and Weights Electric Heat Table 6. Electric heat dimensions (in.) and weights (lb) Unit size H W A B C D E Weight 12 14.06 17.88 8.13 6.79 10.50 7.75 0.03 10.0 18 14.06 19.88 10.13 8.79 10.50 7.75 0.03 10.8 24 18.06 21.25 7.63 6.29 13.50 12.63 0.80 11.3 36 18.06 27.25 13...

Page 20 - Steam Coil

20 BCXC-SVX01B-EN Dimensions and Weights Steam Coil Table 7. Steam coil box dimensions (in.) and weights (lb) Unit size Coil Connections, NPT H W A B C Weight Supply Return 12 14.00 24.00 12.06 18.04 2.98 34 1 3/4 18 14.00 28.00 12.06 22.04 2.98 37 1 3/4 24 18.00 28.00 16.06 22.04 2.98 40 1-1/2 1 36...

Page 21 - Coil Connections

BCXC-SVX01B-EN 21 Dimensions and Weights Coil Connections Table 8. Hydronic coil connection sizes, OD (in.) Unit size Standard capacity High capacity 1-row 4-row 6-row 2-row 4-row 6-row 12 5/8 - - 5/8 7/8 7/8 18 5/8 - - 5/8 7/8 7/8 24 5/8 - - 7/8 1-1/8 1-1/8 36 7/8 - - 7/8 1-1/8 1-1/8 54 1-1/8 1-3/8...

Page 22 - Piping Packages; Basic Piping

22 BCXC-SVX01B-EN Dimensions and Weights Piping Packages Basic Piping Two-way, 1/2” and 1” valve basic piping package Two-way, 1-1/4” valve basic piping package Three-way, 1/2” and 1” valve basic piping package A B A B B B A AB A E A B AB A B E F

Page 25 - Installation Controls; Installing Wall Mounted Controls; Wiring Instructions; Zone Sensor Installation; Figure 3; Wall-mounted zone sensor dimensions

BCXC-SVX01B-EN 25 Installation Controls Installing Wall Mounted Controls Wall mounted zone sensors ship taped to the control box. Refer to Figure 3 for zone sensor dimensions. Position the controller on an inside wall three to five feet above the floor and at least 18 inches from the nearest outside...

Page 26 - “Tracer Summit Communication Wiring,”; Communication Wiring; Service Communication Wiring

26 BCXC-SVX01B-EN Installation Controls b. Pull the control wires through the cutout. Attach the module to the wall using the screws provided. 5. Strip the insulation on the interconnection wires back 0.25 inch and connect to TB1. Screw down the terminal blocks. 6. Replace the zone sensor cover and ...

Page 27 - Two terminals for communication to the board; Tracer Summit Communication Wiring; communication wiring diagram.

BCXC-SVX01B-EN 27 Installation Controls Peer-to-peer communication across controllers is possible even when a building automation system is not present.You do not need to observe polarity for Comm5 communication links. The controller provides six 0.25-inch quick-connect terminals for the Comm5 commu...

Page 28 - Installation Electrical; . Use these diagrams for connections or trouble; If the unit has no controls:

28 BCXC-SVX01B-EN Installation Electrical Unit Wiring Diagrams Specific unit wiring diagrams are provided on the inside of the control panel door. Typical unit wiring diagrams are in “Wiring Diagrams,” p. 81 . Use these diagrams for connections or trouble analysis. WARNING Grounding Required! Follow...

Page 29 - If the unit has a electric heat:; Electrical Grounding Restrictions; for the wire size range and maximum wiring distance for each

BCXC-SVX01B-EN 29 Installation Electrical 3. If the unit has a electric heat: power and ground connections are inside the electric heat control box, connected to a non-fused disconnect switch or terminal block. Electrical Grounding Restrictions WARNING Hazardous Voltage! Disconnect all electric powe...

Page 30 - Useful Formulas

30 BCXC-SVX01B-EN Installation Electrical See Table 13 for electric heat kW and Table 14, p. 31 for motor FLAs. Select a standard fuse size or HACR type circuit breaker equal to the MCA. Use the next larger standard size if the MCA does not equal a standard size. Standard fuse sizes are: 15, 20, 25,...

Page 31 - Table 14. Motor electrical data

BCXC-SVX01B-EN 31 Installation Electrical Table 14. Motor electrical data Voltage Voltage range rpm Rated hp lb FLA LRA 115/60/1 104–126 1750 1/3 18 5.8 22.8 1/2 21 7.2 30.4 3/4 29 12.0 58.4 1.0 29 12.8 58.4 Two-speed115/60/1 104–126 1750/1160 3/4 40 8.9/6.1 42.0 1.0 41 11.5/8.1 58.2 208–230/60/1 18...

Page 33 - Installation Mechanical; Horizontal Units, Model BCHC; Figure 4; How to hang the horizontal unit from the ceiling

BCXC-SVX01B-EN 33 Installation Mechanical WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result...

Page 34 - Figure 5; Vertical Units, Model BCVC

34 BCXC-SVX01B-EN Installation Mechanical 4. Guide the threaded rod through the unit from the top, careful not to damage insulation or wiring. See Figure 5 . Insert the threaded rod at an angle to help prevent internal unit damage. 5. Put a nut and large flat washer or steel plate on the bottom of t...

Page 35 - Figure 7; Heating Coil Option; Remove both coil access panels.; Mixing Box Option; mounting legs; Typical vertical unit installation

BCXC-SVX01B-EN 35 Installation Mechanical required. The unit is shipped in two pieces, and can be arranged in either a pre-swirl or counter-swirl inlet configuration (see Figure 7 ). Heating Coil Option Note: The hydronic heating coil option is factory installed in either the reheat or preheat posit...

Page 36 - Condensate Drain Connections; Prime drain traps to prevent the drain pan overflow.

36 BCXC-SVX01B-EN Installation Mechanical • interconnecting linkage, LH or RH attachment Materials needed: • grooved and extendible drive rods, 1/2-inch O.D. grooved • screws The mixing box option ships separately for field installation. It has two low-leak, opposed blade dampers and all necessary i...

Page 37 - Figure 8; Duct Connections; three inches; Recommended drain trap installation for draw-through units

BCXC-SVX01B-EN 37 Installation Mechanical Plug or trap the auxiliary connection to prevent air from being drawn in and causing carryover (see Figure 8 ). All drain lines downstream of the trap must flow continuously downhill. If segments of the line are routed uphill, this can cause the drain line t...

Page 38 - Installation Piping; Water Coil Connections; “Dimensions and; Protect the closest valve to the connection with a wet rag.; Refrigerant Coil Piping; Do not manifold two,; Liquid Line; Horizontal unit coil connect location

38 BCXC-SVX01B-EN Installation Piping Water Coil Connections Water coils have sweat connections. Reference coil connection dimensions in “Dimensions and Weights,” p. 15 . Proper installation and piping is necessary to ensure satisfactory coil operation and prevent operational damage. Water inlet and...

Page 39 - Moisture-indicating sight glass; Suction Line

BCXC-SVX01B-EN 39 Installation Piping diameter must be as small as possible, while still providing at least 5°F [2.7°C] of subcooling at the expansion valve throughout the operating envelope. Routing. Install the liquid line with a slight slope in the direction of flow so that it can be routed with ...

Page 40 - Access port; Field-Installing Evaporator Piping; Figure 10. Field-installed evaporation piping example

40 BCXC-SVX01B-EN Installation Piping Routing. To prevent residual or condensed refrigerant from “free-flowing” toward the compressor, install the suction line so it slopes slightly—1 inch per 10 feet of run [1 cm per 3 m]—toward the evaporator. Avoid putting refrigerant lines underground. Refrigera...

Page 41 - Steam Piping; General; Support all piping independently of coils.; Steam Coils; valves to prevent steam hammer.

BCXC-SVX01B-EN 41 Installation Piping Steam Piping Proper installation, piping and trapping is necessary to insure satisfactory heating coil operation and prevent operational damage under service conditions. These installation recommendations and piping diagram (see Figure 11, p. 42 ) must be follow...

Page 42 - assure continuous condensate removal.

42 BCXC-SVX01B-EN Installation Piping 6. Do not modulate steam or use on-off supply control on systems with overhead or pressurized returns unless condensate is drained by gravity to receiver (vented to atmosphere) and returned to main by condensate pump. 7. At startup with dampers, slowly turn stea...

Page 43 - Controls Interface; Control Options; Control interface; Control Interface; Tracer Controllers; Programming Guide

BCXC-SVX01B-EN 43 Controls Interface Control Options Blower coil air handlers are available without controls or with one of four different control options: • Control interface • Tracer™ ZN010 • Tracer ZN510 • Tracer ZN520 Units without controls have a junction box mounted on the drive side for motor...

Page 44 - Zone setpoint; Rover Service Software; Table 15. Tracer controller input/output summary

44 BCXC-SVX01B-EN Controls Interface • Zone setpoint • Current zone temperature • Fan mode selection (off-auto-high-low) For optimal system performance, blower coil units can operate as part of an Integrated Comfort™ System (ICS) building automation system controlled by Tracer Summit®. The controlle...

Page 45 - Table 16. Tracer controller function summary; Table 17. End Device Option Availability

BCXC-SVX01B-EN 45 Controls Interface Table 16. Tracer controller function summary Tracer™ Controller ZN010 ZN510 ZN520 Control functions Entering water temp. sampling (purge) • • • Timed override • • • Auto changeover • • • Fan cycling • • Warm-up • • • Pre-cool • • • Data sharing (master/slave) • •...

Page 46 - Receiving; of the unit for shaft removal and servicing (see; Unit Mounting; Place unit in its final location.

46 BCXC-SVX01B-EN Pre-Start Pre-Start Checklist Complete this checklist after installing the unit to verify all recommended installation procedures are complete before unit startup. This does not replace the detailed instructions in the appropriate sections of this manual. Disconnect electrical powe...

Page 48 - Sequence of Operation; Tracer ZN Controller Sequence of Operation; Installation, Operation, and Programming Guide; Tracer ZN Modes of Operation

48 BCXC-SVX01B-EN Start-Up Sequence of Operation Tracer ZN Controller Sequence of Operation Controller Start-Up Refer to Trane publication CNT-SVX04A-EN, Installation, Operation, and Programming Guide , to operate the Tracer™ ZN controller with Trane Integrated Comfort™ System (ICS). The factory pre...

Page 49 - device (available on TracerTM ZN510 and ZN520 only); Occupied Mode; Unoccupied Mode; measured space temperature,; Table 18. Occupancy sensor state

BCXC-SVX01B-EN 49 Start-Up 3. Default operation of the controller (occupied mode) 4. Communicated request, usually provided by the building automation system (BAS) or peer device (available on Tracer™ ZN510 and ZN520 only) A communicated request will control the controller’s occupancy. Typically, th...

Page 50 - Operation, and Programming Guide; Cooling Operation; occupied cooling setpoint,

50 BCXC-SVX01B-EN Start-Up enabled (Tracer™ ZN520 only) and possible, it is the primary cooling capacity. If hydronic heating is possible, it will be the primary heating capacity. Occupied Standby Mode (Tracer ZN510 or ZN520 only) The controller can be placed into the occupied standby mode when a co...

Page 51 - Discharge Air Tempering (Tracer ZN520 Only); all cooling capacity is at minimum, and; Heating Operation; for more information about abnormal unit

BCXC-SVX01B-EN 51 Start-Up Note: Unit diagnostics can affect fan operation, causing occupied and occupied standby fan operation to be defined as abnormal. Refer to “Troubleshooting,” p. 72 for more information about abnormal fan operation. Economizer Cooling (Tracer ZN520 Only) The economizer provid...

Page 52 - Fan Mode Operation; cooling modes can be configured using RoverTM service software.; Table 19. Tracer ZN520 fan configuration; Table 20. Fan sequence of operation

52 BCXC-SVX01B-EN Start-Up heating capacity of the unit (0–100%). The outputs are controlled based on the unit configuration and the required heating capacity. Fan Mode Operation WARNINGRotating Components! Disconnect all electric power, including remote disconnects before servicing. Follow proper l...

Page 54 - for more

54 BCXC-SVX01B-EN Start-Up Fan Cycling Operation Tracer™ ZN520 does not support fan cycling in occupied mode. The fan cycles between high speed and off in the unoccupied mode only. The controller’s cascade control algorithm requires continuous fan operation in the occupied mode. Fan Off Delay When a...

Page 55 - Entering Water Temperature Sampling Function; Table 23. Local fan switch enabled

BCXC-SVX01B-EN 55 Start-Up Two- and Four-Pipe Changeover Operation Tracer™ ZN controllers offer accurate and reliable unit changeover using 2-way valves and the controller’s entering water temperature sampling function. Only units using the main hydronic coil for both heating and cooling (2-pipe and...

Page 56 - Electric Heat Operation; Table 25. Unit mode as related to water temperature

56 BCXC-SVX01B-EN Start-Up flows normally and frequently through the coil, the controller does not invoke the sampling function because the EWT is satisfactory. However, when the controller detects an incorrect water temperature based on heating or cooling mode, it invokes the entering water tempera...

Page 57 - Binary input 2: condensate overflow; BIP1: Low Temperature Detection Option

BCXC-SVX01B-EN 57 Start-Up temperature rises 5°F above the economizer enable point, the controller disables economizing and moves the fresh air damper back to its predetermined minimum position based on the current occupancy mode or communicated minimum damper position. Tracer Dehumidification (Trac...

Page 58 - See the “Diagnostics” section for more information.; BIP2: Condensate Overflow Detection Option; Table 27. Binary input configurations

58 BCXC-SVX01B-EN Start-Up temperature diagnostic when detecting low temperature. In addition, Tracer ZN controls unit devices as listed below: Fan: OffValves: OpenElectric heat: OffDamper: Closed Note: See the “Diagnostics” section for more information. BIP2: Condensate Overflow Detection Option Th...

Page 59 - Table 28. Analog inputs

BCXC-SVX01B-EN 59 Start-Up Analog Inputs See Table 28 for a complete description of analog inputs. Binary Outputs Binary outputs are configured to support the following:• Two fan stages (when one or two fan stages are present, J1-2 can be configured as exhaust fan) • One hydronic cooling stage • One...

Page 60 - Zone Sensor; Space temperature measurement (10kW thermistor); Space Temperature Measurement; Table 29. Binary output configuration; Table 30. Zone sensor wiring connections

60 BCXC-SVX01B-EN Start-Up Zone Sensor The Tracer™ ZN controller accepts the following zone sensor module inputs:• Space temperature measurement (10kW thermistor) • Local setpoint (either internal or external on the zone sensor module) • Fan mode switch • Timed override, using “on” and “cancel” butt...

Page 61 - Heating setpoint high limit; Fan Switch

BCXC-SVX01B-EN 61 Start-Up temperature value exists, the controller ignores the hardwired space temperature input and uses the communicated value. Local Setpoint The zone sensor may be equipped with a thumbwheel for setpoint adjustment. Fan Mode Switch The zone sensor may be equipped with a fan mode...

Page 62 - Communication Jack; and discharge air sensor

62 BCXC-SVX01B-EN Start-Up When the fan switch is in the off position, the controller does not control any unit capacity. The unit remains powered and all outputs drive to the closed position. Upon a loss of signal on the fan speed input, the controller reports a diagnostic and reverts to using the ...

Page 63 - Maintenance; Maintenance Procedures; Air Filters; Before lubricating the motor:; Sheave Alignment

BCXC-SVX01B-EN 63 Maintenance Maintenance Procedures Perform the following maintenance procedures to ensure proper unit operation. Air Filters Always install filters with directional arrows pointing toward the fan. Fan Bearings Fan bearings are permanently sealed and lubricated and do not require ad...

Page 64 - for recommendations.; Fan Belt Tension; Figure 15. Clearance recommendation to

64 BCXC-SVX01B-EN Maintenance sheaves and pull tight. Adjust sheaves and tighten the sheave set screws to the correct torques recommended in Table 31 . Fan Assembly Set Screws Check and adjust fan wheel, bearing, and sheave set screws whenever a component is removed or an adjustment is made. Refer t...

Page 65 - Table 33. BCBH/BCVC valve package waterflow limits

BCXC-SVX01B-EN 65 Maintenance NOTICE Belt tension! Do not over-tension belts. Excessive belt tension will reduce fan and motor bearing life, accelerate belt wear, and could result in shaft failure. Table 32. BCHC/BCVC fan, filter, and mixing box general data Unit size 12 18 24 36 54 72 90 Nominal cf...

Page 69 - Coil Maintenance; Potential unit damage from coil cleaners!; Inspecting and Cleaning Coils

BCXC-SVX01B-EN 69 Maintenance Coil Maintenance Keep coils clean to maintain maximum performance. For operation at its highest efficiency, clean the coil often during periods of high demand or when dirty conditions prevail. Clean the coil a minimum of once per year to prevent dirt buildup in the coil...

Page 70 - Periodic Maintenance Checklists; Monthly Checklist; continually. Replace worn or fraying belts in matched sets.; Semi-Annual Maintenance; Inspect, clean, and tighten all electrical connections and wiring.

70 BCXC-SVX01B-EN Maintenance Winterizing the Coil Make provisions to drain coils that are not in use, especially when subjected to freezing temperatures. To drain the coil, first blow out the coil with compressed air. Next, fill and drain the tubes with full-strength ethylene glycol several times. ...

Page 71 - line to ensure adequate flow.

BCXC-SVX01B-EN 71 Maintenance 2. Visually inspect the entire unit casing for chips or corrosion. Remove rust or corrosion and repaint surfaces. 3. Clean fan wheels and fan shaft. Remove any rust from the fan shaft with an emery cloth and recoat with L.P.S. 3 or equivalent. 4. Inspect the drainpan fo...

Page 72 - Diagnostics; Troubleshooting; LED Activity; Red Service LED; Table 36. Red service LED activity‘

72 BCXC-SVX01B-EN Diagnostics Troubleshooting LED Activity Red Service LED The red LED normally indicates if the unit controller is operating properly or not. Refer to Table 36 . Green Status LED The green LED normally indicates whether the controller is powered on (24 VAC supplied). Refer to Table ...

Page 73 - Manual Output Test; Force the water valve to open and balance the hydronic system.; Manual Output Test Procedure

BCXC-SVX01B-EN 73 Diagnostics Service LED section. Use Rover™ service tool to restore the unit to normal operation. Refer to the Rover product literature for more information. Manual Output Test The purpose of the manual output test sequence is to verify output and end device operation. Use the manu...

Page 74 - Translating Multiple Diagnostics; Possible diagnostics include:; Table 40. Tracer ZN520 test sequence

74 BCXC-SVX01B-EN Diagnostics Diagnostics Translating Multiple Diagnostics The controller senses and records each diagnostic independently of other diagnostics. It is possible to have multiple diagnostics present simultaneously. The diagnostics are reported in the order they occur. Possible diagnost...

Page 75 - Resetting Diagnostics; Automatic Reset by the Controller

BCXC-SVX01B-EN 75 Diagnostics • Low temperature detection • Condensate overflow • Low air flow - fan status • Discharge air temp limit • Space temperature failure 1 • Entering water temp failure 1 • Discharge air temp failure • Outdoor air temp failure 1 • Local setpoint failure 1 • Local fan mode f...

Page 77 - Table 41. Tracer ZN010 and ZN510 controller diagnostics; Table 42. Tracer ZN520 diagnostics

BCXC-SVX01B-EN 77 Diagnostics Table 41. Tracer ZN010 and ZN510 controller diagnostics Diagnostic Latching Fan Valves Electric heat Damper Auxiliary temperature failure No Enabled No action No action No action Condensate overflow detection Yes Off Closed Off Closed Entering water temperature No Enabl...

Page 78 - Common Diagnostics; Table 43. Fan outputs do not energize; Table 44. Valves stay closed

78 BCXC-SVX01B-EN Diagnostics Common Diagnostics Table 43. Fan outputs do not energize Probably cause Explanation Random start observed After power-up, the controller always observes a random start that varies between 0 and 30 seconds. The controller remains off until the random start time expires. ...

Page 79 - Table 45. Valves stay open; Table 46. Electric heat not operating

BCXC-SVX01B-EN 79 Diagnostics Table 45. Valves stay open Probable cause Explanation Normal operation The controller opens and closes the valves to meet the unit capacity requirements. Valve override The controller can communicate a valve override request to affect the valve operation. Manual output ...

Page 80 - Table 48. Fresh air damper stays open; Table 49. Valves stay closed; Table 50. DX or electric outputs do not energize

80 BCXC-SVX01B-EN Diagnostics Table 48. Fresh air damper stays open Probable cause Explanation Normal operation The controller opens and closes the fresh air damper based on the controller’s occupancy mode and fan status. Normally, the fresh air damper is open during occupied mode when the fan is ru...

Page 81 - Wiring Diagrams; Two-Pipe BCXC with Tracer ZN510; single stage electric heat; Use copper conductors only!

BCXC-SVX01B-EN 81 Wiring Diagrams Two-Pipe BCXC with Tracer ZN510 • 208 volt/3 phase • 2-position damper • single stage electric heat • 2-position valve • condensate overflow • wall-mounted zone sensor WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before serv...

Page 82 - Four-Pipe BCXC with Tracer ZN510; condensate overflow

82 BCXC-SVX01B-EN Wiring Diagrams Four-Pipe BCXC with Tracer ZN510 • 208 volt/3 phase • 2-position valves • 2-position damper • condensate overflow • low limit protection • wall-mounted zone sensor WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicin...

Page 84 - Two-Pipe BCXC with Tracer ZN520; economizer damper

84 BCXC-SVX01B-EN Wiring Diagrams Two-Pipe BCXC with Tracer ZN520 • 460 volt/3 phase • 2-position valve • economizer damper • 2-stage electric heat • fan status switch • condensate overflow • wall-mounted zone sensor WARNING Hazardous Voltage! Disconnect all electric power, including remote disconne...

Page 85 - Four-Pipe BCXC with Tracer ZN520

BCXC-SVX01B-EN 85 Wiring Diagrams Four-Pipe BCXC with Tracer ZN520 • 460 volt/3 phase • 2-position valves • condensate overflow • fan status switch WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensu...

Page 87 - -wire floating point valves

BCXC-SVX01B-EN 87 Wiring Diagrams Four-Pipe BCXC with Tracer ZN520 • 460 volt/3 phase • 3-wire floating point valves • economizer damper • condensate overflow • fan status switch • wall-mounted zone sensor WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before ...

Page 88 - Four-Pipe BCXC with Control Interface; • 3-wire floating point valves

88 BCXC-SVX01B-EN Wiring Diagrams Four-Pipe BCXC with Control Interface • • 208 volt/3 phase • • 3-wire floating point valves • • 2-position damper • • low limit protection • • condensate overflow WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing...

Page 90 - BCXC with DX Coil and Tracer ZN520

90 BCXC-SVX01B-EN Wiring Diagrams BCXC with DX Coil and Tracer ZN520 • 277 volt/1 phase • economizer damper • condensate overflow • wall-mounted zone sensor 5 ON/OFF 5 ON/OFF CLG CLG DX COOLING DX COOLING C C 38A 38A G G ,K ,K K K G,J G,J DX RELAY DX RELAY 1K3 1K3 2S8 2S8 EVAP DEFROST FROSTAT EVAP D...

Page 91 - BCXC with DX Coil, Hydronic Heating, and Tracer ZN520

BCXC-SVX01B-EN 91 Wiring Diagrams BCXC with DX Coil, Hydronic Heating, and Tracer ZN520 • 460 volt/3 phase • economizer damper • condensate overflow • wall-mounted zone sensor 5 ON/OFF 5 ON/OFF CLG CLG DX COOLING DX COOLING C C 38A 38A G G ,K ,K K K G,J G,J DX RELAY DX RELAY 1K3 1K3 2S8 2S8 EVAP DEF...