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Section 4

Auto-Zone CV & CV-EX

4-30

Start-Up and Troubleshooting

Checking CV Controller Drivers – CV & CV-EX

Diagram

Meter Set To Read DC Volts

Note

These tests assume that the CV controller being checked is powered up.

Overview

This check is intended to determine if the Comm Driver chip on a controller is damaged.
Damage typically occurs when the communications loop is exposed to excessive voltage, as
may occur during installation, due to wiring errors. The driver chips are socketed on all
boards to facilitate servicing. It is unusual for driver chips to fail during normal operation.
Almost all failures occur as a result of wiring related problems.

Measurements

Local Loop

Acceptable Range

T - SHLD

2.4 - 2.5 Volts DC

R - SHLD

2.4 - 2.5 Volts DC

Note

Minor variances may not indicate a problem if both tests indicate similar values.

Action

Condition

Action

If voltages are too high or too low on either
side

The controller has a damaged Comm
Driver chip.

Replace the driver chip.

See

instructions for "CV Controller Driver
Chip Replacement.”

firealarmresources.com

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Содержание Auto-Zone CV

Страница 1: ...Design Installation And Operations Manual CV CV EX System Revision 01B firealarmresources com...

Страница 2: ...firealarmresources com...

Страница 3: ...Troubleshooting This document is subject to change without notice WattMaster Controls Inc assumes no responsibility for errors or omissions herein Auto Zone CV CV EX Installation Operations Manual For...

Страница 4: ...firealarmresources com...

Страница 5: ...tem Overview 2 CV System Features 3 CV EX System Overview 4 CV EX System Features 5 Table of Figures Figure 1 1 Typical Building for CV System 2 Figure 1 2 Typical CV System 3 Figure 1 3 Typical Build...

Страница 6: ...firealarmresources com...

Страница 7: ...nature of information presented Note Additional information which may be helpful Tip Suggestion to make installation set up and troubleshooting easier Caution Items which may cause the equipment not t...

Страница 8: ...s typically not found with programmable thermostats such as central operators interface heating cooling failure alarm change filter alarm full energy saving economizer control and holiday scheduling T...

Страница 9: ...the system Provides connections for computer and Remote Link modem for on site or remote communications Remote Link personal computer are optional Trend Logging capability if connected to a personal c...

Страница 10: ...ystem capability up to 120 units The versatile CV EX system provides one central location to monitor and program the controllers instead of having to program individual thermostats The system has many...

Страница 11: ...k computer are optional Trend Logging capability if connected to a personal computer with free Prism Windows based software installed Computer Optional CommLink II Multiple Loop System Manager CV Cont...

Страница 12: ...firealarmresources com...

Страница 13: ...mmunications Loop Wiring Overview 5 CV Controller 8 CV Controller Wiring 9 CV Controller Addressing 11 CV System Sensors 12 Room Sensors 12 Supply Air Temperature Sensor 14 Outside Air Temperature Sen...

Страница 14: ...re 2 6 Constant Volume Controller Wiring 9 Figure 2 7 CV Controller Address Switch Setting 11 Figure 2 8 Room Sensor Installation 12 Figure 2 9 Room Sensor Wiring 13 Figure 2 10 Supply Air Temperature...

Страница 15: ...of this manual and in the CV and CV EX submittal package to list all CV unit locations This will assist you greatly when setting up the system and later for troubleshooting the system if necessary Be...

Страница 16: ...ator By Others Generic Alarm Dirty Filter Alarm Shown Outside Air Sensor Room Sensor with Optional Override Adj F Typical Constant Volume Unit NOTE Only One Outside Air Sensor is Required per CV Syste...

Страница 17: ...r By Others Outside Air Sensor Room Sensor with Optional Override Adj F Typical Constant Volume Unit NOTE Only One Outside Air Sensor is Required per CV EX System 24VAC Loop 1 MiniLink Loop 2 MiniLink...

Страница 18: ...rt or erratic operation CV CV EX Communications Loops The CV and CV EX communications loops are different in one respect The CV has only one communication loop while the CV EX has two On the CV system...

Страница 19: ...D PWR PWR PWR PWR PWR PWR COMM COMM COMM COMM COMM COMM T T T T T T SHLD SHLD SHLD SHLD SHLD SHLD LD4 LD4 LD4 LD4 LD4 LD4 REC REC REC REC REC REC 12V 12V 12V 12V 12V 12V AIN AIN AIN AIN AIN AIN 1 1 1...

Страница 20: ...GND GND PWR PWR PWR PWR PWR PWR COMM COMM COMM COMM COMM COMM T T T T T T SHLD SHLD SHLD SHLD SHLD SHLD LD4 LD4 LD4 LD4 LD4 LD4 REC REC REC REC REC REC 12V 12V 12V 12V 12V 12V AIN AIN AIN AIN AIN AIN...

Страница 21: ...nimum number of ends while using the shortest wiring path Note The communication loops do not have to follow the controller or MiniLink address sequence Caution If the communications loop is not insta...

Страница 22: ...the mounting plate The unit is mounted by securing with four 4 screws through the mounting holes in the mounting backplate Select the correct screws or other fasteners for the type of mounting materi...

Страница 23: ...dance With Local And National Electrical Codes And Specifications 3 All Communication Wiring To Be 2 Conductor Twisted Pair With Shield Use Belden 82760 Or Equivalent Economizer Actuator Belimo Shown...

Страница 24: ...nto the circuit boards The Constant Volume Controller requires the following electrical connections 18 Gauge minimum unless otherwise noted 24VAC Supply Voltage 2 Conductors Communications Loop 2 Cond...

Страница 25: ...ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1...

Страница 26: ...lls which retain large amounts of thermal energy such as marble or steel Walls containing either cold or warm air currents should also be avoided whenever possible Avoid locating the sensor in dead ai...

Страница 27: ...IN 1 2 3 4 5 GND GND AOUT AIN AIN AIN AIN PRESSURE SENSOR YS ROOM SENSOR CV CONTROLLER Connect To AUX Terminal Required Only When Sensor Is Specified With Slide Adjust Option Figure 2 9 Room Sensor Wi...

Страница 28: ...et metal screws Be sure the gasket is compressed to provide an air tight seal For best accuracy apply insulation on the outside of the duct over the sensor This will help prevent thermal gradients fro...

Страница 29: ...ter Can Damage Sensor 2 Unused Conduit Opening s Must Have Closure Plugs Installed And Must Be Coated with Sealing Compound To Provide Raintight Seal Water Can Damage Sensor 1 The Outside Air Sensor M...

Страница 30: ...site computer is to be connected to the system locate the CommLink II near the computer Also if a Remote Link is to be used it must be located close to the CommLink The CommLink II comes complete with...

Страница 31: ...9 Pin Connector As Required By Available Serial COM Port On Computer Connect To Remote Link Only 9 Pin Female 9 Pin Female 25 Pin Female 9 Pin Female 120 24 Vac Transformer 25 Pin Male Warning Use The...

Страница 32: ...hite plastic housing suitable for wall mounting A four line by twenty character backlighted LCD display and membrane keypad provide a user friendly interface All system variables setpoints and values...

Страница 33: ...REV 1 DSPY1 UNIVERSAL SMART DISP UNIT SYSTEM MANAGER SERIAL U13 SERIAL 1000uF10v C9 470uF50v D2 PCB80C552 5 16WP 442860 2 5 DfD9722V7 Y PHILIPS CX13 LD8 CX9 SS0017 vx xx 1234 V62C518256L 70P U9 U8 LD...

Страница 34: ...w an additional 30 CV controllers to be connected to the system A maximum of two expansion kits can be used on the CV EX system to provide integration of up to 120 CV controllers See Figure 2 15 for a...

Страница 35: ...ess switch location See Figure 2 16 for wiring information Figure 2 16 MiniLink Interface Wiring R SH T R SH T R SH T R SH T All Communication Loop Wiring Is Straight Through Required VA For Transform...

Страница 36: ...SOA 3 S SO SA SOA 4 S SO SA SOA 5 S SO SA SOA 6 S SO SA SOA 7 S SO SA SOA 8 S SO SA SOA 9 S SO SA SOA 10 S SO SA SOA 11 S SO SA SOA 12 S SO SA SOA 13 S SO SA SOA 14 S SO SA SOA 15 S SO SA SOA 16 S SO...

Страница 37: ...te 6 New Passcodes 8 Rebuild Alarm Map 9 Read Reset Units 10 CV Controller Force Modes 11 CV Controller Read Reset Operations 12 CV Controller Status 13 CV Controller Setpoints 16 CV Controller Schedu...

Страница 38: ...firealarmresources com...

Страница 39: ...ata from the display by pressing the Clear key ENTER Use the Enter key to close out a data entry It can also be used to advance to the next field or screen DEC If entering a setpoint that requires a d...

Страница 40: ...component on your communications loop With the System Manager you can view any temperature or output condition and change any setpoint to fine tune the operations of the total system All keypad operat...

Страница 41: ...ing the system you can exit this menu and return to the Main Screen by pressing the ESC button View Change Enter Unit ID Selected Unit 101 If you have selected the View Change Zone menu item you will...

Страница 42: ...to 90 degrees When you are finished viewing this screen simply press the ESC button to exit The Heating Setpoint is never allowed to get any closer than one degree of the Cooling setpoint If you are...

Страница 43: ...e System Manager latches the alarm condition This makes it possible to determine if any intermittent alarm conditions have occured If you have Level 2 access you can enter the full system access mode...

Страница 44: ...o set the Real Time Clocks for all units on your communications loop Programming Time 1 Set Time Date 2 Read Reset Units 3 New Passcodes 4 Rebuild Alarm Map If you selected the MENU key from the first...

Страница 45: ...t Savings changes you can enable the System Manager to automatically reset its own clock during the Daylight Savings changeover If you enable this operation it knows to changeover the first Sunday in...

Страница 46: ...Heating and Cooling Setpoints and to viewing Unit ID numbers for those in alarm conditions Level 2 users have complete system access Any status or setpoint field can be read or reset from the Auto Zon...

Страница 47: ...sance alarms bothering you The screen will display each address it is testing and if a unit is FOUND at that address If you have a CV system you don t have to wait for the System Manager to check for...

Страница 48: ...ddress on CV EX systems And on CV systems it is just the CV controller board address The CV Controllers should always be addressed starting with number 1 and continuing up to 30 The CV EX MiniLinks ne...

Страница 49: ...red will be retained in non volatile memory The unit will resume the force mode of operation anytime the power is cycled 0 Auto Use internal schedules for Day Night Mode 1 Occupied Forced to Continuou...

Страница 50: ...ESC To Exit 1 CVAHU Status View the current temperatures and operating modes for this Constant Volume AHU 2 CVAHU Setpoints View or change any of the available setpoints for this Constant Volume AHU...

Страница 51: ...Active Push button Override Forced Occupied Forced Unoccupied Forced Fan Only Mode Line 3 Neutral Mode Cooling Mode Heating Mode Line 4 Reserved for Future Use This Line is Blank CVAHU 18 vl xx Temper...

Страница 52: ...er 10 Heating Locked Out Fan On Line 2 Shows the current Economizer Damper position if the CVAHU has been configured to control the Economizer This line is blank if the CVAHU does not control the Econ...

Страница 53: ...re than five degrees after a stage of heating or cooling has been activated for 30 minutes CVAHU 18 vl xx Zone Cooling ALARM Line 2 Zone Sensor O K Bad Zone Sensor Zone Cooling ALARM Zone Heating ALAR...

Страница 54: ...e below the Cooling Setpoint or the CVAHU will not accept the new values Minimum Default Maximum Cooling Setpoint 50 F 75 F 90 F Heating Setpoint 50 F 72 F 90 F CVAHU Setpoints Unoccupied Setpoints Co...

Страница 55: ...de Effect 0 F 3 F 5 F SP Deadband 0 F 1 F 10 F CVAHU Setpoints Cooling Stages 2 Heating Stages 2 The CVAHU can support a total of four stages of heating and cooling configured to best match your syste...

Страница 56: ...s must have been off for a minimum amount of time before they can be activated or re activated As each additional stage of heating is added a minimum Staging Delay period must be satisfied between eac...

Страница 57: ...ent setting to the opposite mode Line 3 The CVAHU has the ability to control the Economizer operation If you require this feature select Enabled otherwise select Disabled Constant Volume Unit Uses Sch...

Страница 58: ...zer Control this screen will appear The Econo Enable setpoint is the Outdoor Air or Wetbulb Temperature that enables the Economizer to open past its minimum position setpoint to control Supply Air Tem...

Страница 59: ...e or after a power outage you can input a Fan Starting Multiplier The multiplier is multiplied times the address number of the unit and this becomes the number of seconds this unit waits before starti...

Страница 60: ...continue to the next Start Time screen Constant Volume Unit 1 Week Schedules 2 Holidays MENU Previous Menu This menu appears whenever the user accesses the Scheduling functions It allows the user to c...

Страница 61: ...time Line 2 shows which holiday is currently being programmed Remember to combine the month and day into a single four digit value EXAMPLE 0704 July 4th 1225 December 25th Program Holidays Holiday Sc...

Страница 62: ...re Humidity and calculated Wetbulb Temperature 2 Setpoints View or change any of the available setpoints for this Economizer Module WB xx vl xx Outdoor Air 76 9 F Humidity 75 Wetbulb 71 3 F Line 2 Cur...

Страница 63: ...n or other factors are causing the Outdoor Air Temperature reading to be incorrect the user can adjust the reading up or down with this offset Line 2 shows the current temperature when you first enter...

Страница 64: ...inutes 53 1 Set Time Date 2 Read Reset Units 3 New Passcodes 4 Rebuild Alarm Map Program Time Date Month 1 12 9 Day 1 31 18 Year 00 99 95 Daylight Savings Adjustments Enabled Use Left Right Arrow Ente...

Страница 65: ...itches 8 CV And CV EX System Communications Checklist 9 CV Controller Overview 10 How It Works 10 CV Controller Inputs Outputs 11 CV Controller Wiring 13 Startup Commissioning 14 Procedures 14 Procedu...

Страница 66: ...mmunications Loop Wiring 5 Figure 4 5 System Manager Component Location Wiring 6 Figure 4 6 CV Controller Component Locations 7 Figure 4 7 CV Controller Addressing 8 Figure 4 8 Typical CV Controller W...

Страница 67: ...n and this device is considered the loop master The loop master varies depending on the type of system and the installed options For the CV system the loop master is the CommLink The CommLink must be...

Страница 68: ...OUT OUT OUT OUT 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 24VAC 24VAC 24VAC 24VAC 24VAC 24VAC GND GND GND GND GND GND PWR PWR PWR PWR PWR PWR COMM COMM COMM COMM COMM COMM T T T T T T SHLD SHLD SHLD SHLD SH...

Страница 69: ...COM COM COM COM COM COM 1 3 1 3 1 3 1 3 1 3 1 3 OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT 1 1 1 1 1 1 2 2 2 2 2 2 COM COM COM COM COM COM 4 5 4 5 4 5 4 5 4 5 4 5 OUT OUT OUT OUT OUT OUT OUT OUT...

Страница 70: ...Multiple Loop or Single Loop Molded Modem Cable Supplied With CommLink DTE REMOTE LINK REMOTE LINK 485 LOOP 485 LOOP COMPUTER DCE G T R G 2 V 4 D N POWER 4 Piece Computer Cable Kit Supplied With Comm...

Страница 71: ...he Power To The MiniLink Must Be Removed And Reconnected After Changing The Address Switch Caution Disconnect All Communication Loop Wiring From The MiniLink Before Removing Power From The MiniLink Re...

Страница 72: ...uctor Twisted Pair With Shield Use Belden 82760 Or Equivalent Line Voltage See Note 1 See Note 3 24VAC GND Required VA For Transformer System Manager 25VA Max MADE IN THE USA EPROM 1000uF10v YS101806...

Страница 73: ...ys be sure to double check all communication wiring and addressing before initial commissioning of the system It is musch easier to set the address switch on a controller prior to installation rather...

Страница 74: ...ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD ADDRESS ADD SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1...

Страница 75: ...mmLink is wired to 24 Volt AC power supply All 24 VAC power wiring is landed correctly 24VAC to 24VAC and GND to GND CommLink is powered up CV Units are powered up System Manager is powered up Additio...

Страница 76: ...es all operating setpoints from its non volatile EEPROM memory and initializes all outputs to an OFF condition Operating Summary At all times after the conclusion of the initialization sequence the CV...

Страница 77: ...rs so a push during occupied hours has no effect Input 2 This input is only used if a space temperature sensor that has the slide adjust option is installed The slide adjust can be used to offset the...

Страница 78: ...ossible Relay Output Descriptions Output 1 Main Fan ON OFF Control Output 2 Mechanical Heating Cooling Stage 1 Output 3 Mechanical Heating Cooling Stage 2 Output 4 Mechanical Heating Cooling Stage 3 O...

Страница 79: ...National Electrical Codes And Specifications 3 All Communication Wiring To Be 2 Conductor Twisted Pair With Shield Use Belden 82760 Or Equivalent Economizer Actuator Belimo Shown Consult Factory For O...

Страница 80: ...n the previous por tion of this manual For CV Systems it is only one loop For CV EX Systems there are two communication loops 4 The Network Loop This loop originates at the CommLink and interconnects...

Страница 81: ...s start with the MiniLink Plug in the Communication terminal then plug in the Power terminal With the CV EX confirm correct addressing of the MiniLink by verifying its blink code Then connect the firs...

Страница 82: ...SA SOA 2 S SO SA SOA 3 S SO SA SOA 4 S SO SA SOA 5 S SO SA SOA 6 S SO SA SOA 7 S SO SA SOA 8 S SO SA SOA 9 S SO SA SOA 10 S SO SA SOA 11 S SO SA SOA 12 S SO SA SOA 13 S SO SA SOA 14 S SO SA SOA 15 S S...

Страница 83: ...on Is the Comm Loop open or shorted Are the CV Controller address switches set correctly See Figure 4 7 Are the CV Controllers powered Check 24 VAC to the controllers Is the Communications Loop shorte...

Страница 84: ...ress Address 14 14 blinks Five second pause Twenty second time delay LED blinks twenty times Status code is repeatedly blinked every ten seconds to indicate controller status Priority No of Blinks Sta...

Страница 85: ...communications It is normal to see fluctua tions at this point on the CommLink II The average value should be close to the acceptable range described below Values will vary upon initial powerup for a...

Страница 86: ...Note Be sure that the loop you are testing does not have a short circuit from T to R Tip The Loop LED located on the front panel should flicker when the CommLink II is attempting to communicate with...

Страница 87: ...op voltages are essential for reliable communications It is normal to see fluctua tions at this point on the CommLink II The average value should be close to the acceptable range described below Value...

Страница 88: ...see fluctua tions at this point on the CommLink II The average value should be close to the acceptable range described below Values will vary upon initial powerup for about 10 15 seconds as the unit a...

Страница 89: ...CommLink II Note Be sure that the loop you are testing does not have a short circuit from T to R Tip The Loop LED located on the front panel should flicker when the CommLink is attempting to communic...

Страница 90: ...functioning Proper loop voltages are essential for reliable communications It is normal to see fluctua tions at this point on the CommLink The average value should be close to the acceptable range de...

Страница 91: ...ates a problem Note These tests assume that the CommLink is connected and powered and that all MiniLinks which are connected are also powered Overview Proper loop voltages are essential for reliable c...

Страница 92: ...ated near the connector It should periodically flicker as the CommLink requests data from the MiniLink The LED will also flicker when power to the CommLink is cycled If the LED is not flickering the u...

Страница 93: ...ues generally indicates a problem Note These tests assume that the MiniLink being checked is powered up Overview Proper loop voltages are essential for reliable communications It is normal to see fluc...

Страница 94: ...y of the CV Units on a Local Communications Loop are damaged Since all CV Units will float their communications connections at about 2 45 Volts you can quickly check an entire loop by unplugging it at...

Страница 95: ...loop The average value should be close to the ac ceptable range described below Values will vary upon initial powerup for about 30 45 sec onds The voltages may fluctuate as normal communications occur...

Страница 96: ...ion due to wiring errors The driver chips are socketed on all boards to facilitate servicing It is unusual for driver chips to fail during normal operation Almost all failures occur as a result of wir...

Страница 97: ...y air temp cut off Is space calling for cooling Is supply air temperature indicating cooling Is Economizer enabled Is Economizer opening Is cooling being held off by its minimum off timer Is the rooft...

Страница 98: ...ller terminal block where the sensor is con nected Use the supplied Temperature Sensor Voltage Resistance Chart to see if the sensor is within a reasonable range Readings which are much too high or to...

Страница 99: ...100 6047 1 927 54 16956 3 217 105 5453 1 805 56 16164 3 160 110 4923 1 687 58 15385 3 100 115 4449 1 575 60 14681 3 042 120 4030 1 469 62 14014 2 985 125 3656 1 369 64 13382 2 927 130 3317 1 274 66 1...

Страница 100: ...e Into Contact With The Printed Circuit Board Surface 2 A Small Screwdriver May Be Inserted Between The Chip And The Socket To Aid In Removal Of The Chip 3 Be Very Careful Not To Insert The Screwdrive...

Страница 101: ...lling the chip backwards will in most cases destroy the device when power is reapplied Pin 1 can be located by looking for the notch in the end of the chip Pin 1 on some chips is identified with a dot...

Страница 102: ...Section 4 Auto Zone CV CV EX 4 36 Start Up and Troubleshooting Notes firealarmresources com...

Страница 103: ...firealarmresources com...

Страница 104: ...01B Printed in the USA March 2003 All rights reserved Copyright 2003 WattMaster Controls Inc 8500 NW River Park Drive Parkville Mo 64152 Phone 816 505 1100 www wattmaster com Fax 816 505 1101 firealar...

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