Bacharach HGM-MZ Operating Manual

UL 61010-1

Product Leadership • Training • Service • Reliability

MultiZone Gas Monitors

• HGM-MZ (Halogen)

• AGM-MZ (Ammonia)

• CO2-MZ (Carbon Dioxide)

Installation • Operation • Maintenance

CAN/CSA 22.2 No. 61010.1

EN 14624

Instruction P/N: 3015-5074

Rev. 13

January 2015

Multi-Zone Gas Monitors

WARRANTY

Bacharach, Inc. warrants to Buyer that at the time of deliver y this Product will be free from defects in
material and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications.
Bacharach’s liabilit y and Buyer’s remedy under this warranty are limited to the repair or replacement, at
Bacharach’s option, of this Product or parts thereof returned to S eller at the factor y of manufacture a nd
shown to Bacharach Inc .’s reasona ble satisfacti on to have been defective; prov ided that written notice of
the defect shall have been given b y Buyer to Bachara ch Inc. with in two (2) years after the dat e of delivery
of this Product by Bacharach, Inc.

Bacharach, Inc. warrants t o Buyer that it will convey good title to this Produc t. Bacharach’s liabilit y and
Buyer’s remedy under this warrant y of title are limited to the removal of any title defec ts or, at the elec tion
of Bacharach, to the replacement of this Product or parts thereof that are defective in title.

The warranty set f or th in P aragr ap h 1 does not app ly to parts that the Operating Ins truc tions desig nat e as
having a limited shelf-life or as being expended in normal use (e.g., filters).

THE FOREGOING WARRANT IES ARE EX CLUSI VE AND AR E GIVEN AN D ACCEPT ED IN LIEU OF (I)
ANY AND ALL OTHER WARRANTIES, EX PRESS OR IMPLIED, IN CLUDING WITHOUT LIMIT ATION
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REM EDY IN CONTRACT OR
TORT, WHETHER OR NOT ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED.
The remedies of the Bu yer shall be limited to thos e provided herein t o the exclusion of any and all other
remedies including, without limitation incidental or consequential damages. No agreement varying or
extending the foregoing wa r ranties , r emedies or this limitation will be binding upo n Bac har ac h, Inc . un les s
in writing, signed by a duly authorized officer of Bacharach.

Register your warranty by visiting

Product improvements and enhancements are continuous; therefore the specifications and information
contained in this document may change without notice.

Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages
in connection with the furnishing, performance, or use of this material.

Copyright © 2000–2015, Bacharach, Inc., All Rights Reserved

No part of this document may be photocopied, reproduced, or translated to another language without the

®

BACHARACH

is a registered trademark of Bacharach, Inc. All other trademarks, trade names,

service marks and logos referenced herein belong to their respective owners.

www.MyBacharach.com

Patent 6,590,690

prior written consent of Bacharach, Inc.

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Multi-Zone Gas Monitors

Table of Contents

SECTION 1. INTRODUCTION..................................................................................................................... 1

1.1. About This Manual .............................................................................................................................. 1

1.2. Warnings and Cautions ....................................................................................................................... 1

1.3. Safety Precautions .............................................................................................................................. 1

1.3.1. Ha zardous Areas .................................................................................................................... 1

1.3.2. Combustible and Flammable Gases ...................................................................................... 2

1.3.3. AC Power Supply ................................................................................................................... 2

1.3.4. Protective Grounding .............................................................................................................. 2

1.3.5. Explosive Atmosphere ............................................................................................................ 2

1.3.6. Proper Exhaust Venting ......................................................................................................... 2

1.3.7. Accessing the Interior of the Monitor ...................................................................................... 2

1.3.8. Misuse and Modifications to the Instrument ........................................................................... 3

1.3.9. In Case of Malfunction ............................................................................................................ 3

1.3.10. Fusing ..................................................................................................................................... 3

1.3.11. Installation Category ............................................................................................................... 3

1.3.12. Altitude Limit ........................................................................................................................... 3

1.3.13. Cleaning ................................................................................................................................. 3

1.4. Key External Hardware Components .................................................................................................. 4

1.5. Functional Overview ............................................................................................................................ 4

1.5.1. General Description ................................................................................................................ 4

1.5.2. Communications Options ....................................................................................................... 5

1.5.3. Understanding Monitor ing Levels ........................................................................................... 5

1.5.4. Response to the Presence of Multiple Refrigerants (HGM Only) .......................................... 5

1.5.5. Suggested Location of Sampling Points ................................................................................ 5

1.5.6. Locating a Remote Display (Optional) ................................................................................... 6

1.6. Specifications ...................................................................................................................................... 7

SECTION 2. INSTALLATION ...................................................................................................................... 9

2.1. Installation Considerations .................................................................................................................. 9

2.1.1. Warnings and Cautions .......................................................................................................... 9

2.1.2. Inspection ............................................................................................................................... 9

2.1.3. Location of the Monitor ........................................................................................................... 9

2.1.4. Mounting Instructions ............................................................................................................. 9

2.2. Connecting Gas Sample Lines .......................................................................................................... 10

2.2.1. Overview............................................................................................................................... 10

2.2.2. Tubing Considerations ......................................................................................................... 11

2.2.3. Connecting Purge Line ......................................................................................................... 11

2.2.4. Connecting Exhaust Line ..................................................................................................... 11

2.2.5. Connecting Sample Intake Lines ......................................................................................... 11

2.2.6. Installing an Optional Splitter Kit .......................................................................................... 12

2.2.7. Connecting the Water Trap .................................................................................................. 12

2.3. Interior Components .......................................................................................................................... 13

2.4. Electrical Wiring ................................................................................................................................. 13

2.5. Connecting Communications Devices .............................................................................................. 15

2.5.1. Remote Display Module (RD) Connection ........................................................................... 15

2.5.2. Integrating with Building Management Systems .................................................................. 15

2.5.3. Larger Integrated Systems ................................................................................................... 15

2.5.4. Changing Terminator Switch Settings .................................................................................. 16

2.5.5. Personal Computer .............................................................................................................. 16

2.6. Terminating Multiple Mo nit or s ........................................................................................................... 17

2.7. Connecting to a Building Management System ................................................................................ 17

2.8. PC Software ...................................................................................................................................... 18

2.8.1. Operation .............................................................................................................................. 18

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2.8.2. Saving and Sending Program s ............................................................................................ 20

2.8.3. Trend Data ........................................................................................................................... 20

2.8.4. Converting the TREND Text File to a Microsoft Excel File .................................................. 20

2.8.5. Saving and Printing Screens and Logs ................................................................................ 20

2.8.6. USB Type Laptops ............................................................................................................... 20

2.9. Optional Current Loop Interfaces ...................................................................................................... 21

2.9.1. Optional 4–20 mA DC Outputs ............................................................................................. 21

2.9.2. 4-20 mA DC Connections..................................................................................................... 22

2.10. Connecting External Alarms .............................................................................................................. 23

2.10.1. Overview............................................................................................................................... 23

2.10.2. Connection ........................................................................................................................... 23

SECTION 3. SETUP PROGRAMMING ..................................................................................................... 25

3.1. Initial Power Up ................................................................................................................................. 25

3.2. Data Display Screen .......................................................................................................................... 25

3.3. Navigating to the 1st Setup Screen ................................................................................................... 25

3.4. Navigating to the 2nd Setup Screen ................................................................................................. 25

3.4.1. Location ................................................................................................................................ 26

3.4.2. Number of Zones Installed ................................................................................................... 26

3.4.3. Alarm Acknowledge Mode.................................................................................................... 26

3.4.4. Audible Alarm ....................................................................................................................... 26

3.4.5. Zone Hold ............................................................................................................................. 27

3.4.6. Detection Limit ...................................................................................................................... 27

3.4.8. Loop Mode ........................................................................................................................... 27

3.4.7. Loop2 Factor ........................................................................................................................ 27

3.4.9. Re-Zero Mode ...................................................................................................................... 28

3.5. Navigating to the 3rd Setup Screen .................................................................................................. 28

3.5.1. Overview............................................................................................................................... 28

3.5.2. Baud Rate ............................................................................................................................ 28

3.5.3. Node Address ....................................................................................................................... 28

3.5.4. Password .............................................................................................................................. 28

3.6. Additional Service Features .............................................................................................................. 29

3.6.1. Service Timeout ................................................................................................................... 29

3.6.2. DET Digipot .......................................................................................................................... 29

3.6.3. Node Address ....................................................................................................................... 30

3.6.4. Sensor Temperature Coefficient (For Factory Use Only) .................................................... 30

3.6.5. Password .............................................................................................................................. 30

3.6.6. Acquiring Temperature Coefficient (For Factory Use Only) ................................................. 30

3.6.7. IR Digipot .............................................................................................................................. 30

3.7. Establishing the CO

Sensor Baseline .............................................................................................. 30

2

SECTION 4. GENERAL OPERATION ...................................................................................................... 31

4.1. Functional Overview .......................................................................................................................... 31

4.2. The Zone Setup Screen .................................................................................................................... 31

4.2.1. Location ................................................................................................................................ 31

4.2.2. Gas/Refrigerant Type ........................................................................................................... 31

4.2.3. Distance................................................................................................................................ 32

4.2.4. Zone Temperature ................................................................................................................ 32

4.2.5. Current Detection Reading ................................................................................................... 32

4.2.6. Log Interval ........................................................................................................................... 32

4.3. Navigating to the 2nd Zone Setup Screen ........................................................................................ 32

4.3.1. Leak Level ............................................................................................................................ 33

4.3.2. Spill Level ............................................................................................................................. 33

4.3.3. Evacuation Level .................................................................................................................. 33

4.3.4. Re-Setting the Peak PPM Value .......................................................................................... 33

4.4. Alarms ............................................................................................................................................... 33

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4.4.1. Functional Overview ............................................................................................................. 33

4.4.2. Responding to Alarms .......................................................................................................... 34

4.4.3. Alarm Detail Screen ............................................................................................................. 34

4.4.4. Acknowledging Alarms ......................................................................................................... 35

4.4.5. Silencing an Alarm ............................................................................................................... 35

4.4.6. Clearing the Alarm Event Log .............................................................................................. 36

4.5. System Faults .................................................................................................................................... 36

4.5.1. Functional Overview ............................................................................................................. 36

4.5.2. Navigating to the Fault Screen ............................................................................................. 37

4.5.3. Critical Faults ........................................................................................................................ 37

4.5.4. Non Critical Faults ................................................................................................................ 38

4.5.5. Reset to Factory Default Settings ........................................................................................ 38

4.5.6. Clearing System Faults ........................................................................................................ 38

4.5.7. Viewing Fault Log ................................................................................................................. 39

4.5.8. Viewing Flow Log ................................................................................................................. 39

4.6. The Trend Screen ............................................................................................................................. 40

4.6.1. Navigating to the Trend Screen ........................................................................................... 40

4.7. The Calibration Screen ...................................................................................................................... 40

4.7.1. Overview............................................................................................................................... 40

4.7.2. Navigating to the Calibration Screen .................................................................................... 41

4.7.3. Calibration Procedure (HGM and AGM Only) ...................................................................... 41

4.7.4. Adjusting Calibration Factor (HGM and AGM Only) ............................................................ 41

4.7.4. CO

Atmospheric Concentration .......................................................................................... 42

2

4.7.6. Programming New Gases (HGM Only) ................................................................................ 42

4.8. Zone Hold Mode .................................................................................................................................. 43

4.9. The Diagnostic Screen ...................................................................................................................... 44

4.9.1. Navigating to the Diagnostic Screen .................................................................................... 44

4.9.2. Diagnostic Screen Overview ................................................................................................ 45

SECTION 5. MAINTENANCE.................................................................................................................... 47

5.1. Replacement Parts Overview ............................................................................................................ 47

5.2. Replacement Parts and Optional Accessories .................................................................................. 48

5.3. Troubleshooting ................................................................................................................................. 50

APPENDIX A. RECOMMENDED REFRIGERANT GAS ALARM SETTINGS ........................................ 53

APPENDIX B. RS-485 COMMUNICATIONS PROTOCOL ..................................................................... 55

B.1. Overview ............................................................................................................................................ 55

B.2. MODBUS RTU Protocol .................................................................................................................... 55

B.3. MZ MODBUS RTU Operation ........................................................................................................... 55

B.3.1. Overview............................................................................................................................... 55

B.3.2. Protocol Details .................................................................................................................... 55

B.3.3. MZ Monitor Polling ............................................................................................................... 56

B.3.4. Network Topologies .............................................................................................................. 56

B.3.5. Key Comm Protocol Parameters .......................................................................................... 56

B.3.6. MODBUS Exception Responses .......................................................................................... 57

B.3.7. MODBUS Gas Enumeration................................................................................................. 57

B.4. Standard Register Summary ............................................................................................................. 58

B.4.1. Dynamic Register Summary (2000 Series; R; Function Code 03) ...................................... 58

B.4.2. Dynamic Register Summary (2000 Series; R; Function Code 03) ...................................... 59

B.5. Block Mode Register Summary ......................................................................................................... 62

B.5.1. Summary of Registers .......................................................................................................... 62

B.5.2. System Data Register 0x0010 (16 Dec) (R/W, 54 Bytes) .................................................... 62

B.5.3. Status Register 0x001 (17 Dec) (R/W, 10 Bytes) ................................................................ 63

B.5.4. Fault Code Table .................................................................................................................. 64

B.5.5. Zone Data Register 0x12xx (R/W, 78 Bytes) ....................................................................... 64

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B.5.6. Alarms and Alarm Acknowledge .......................................................................................... 65

B.5.7. Date Time Register 0x0015 (21 Dec) (R/W, 14 Bytes) ........................................................ 65

B.5.8. Sensor Data Register 0x0016h (22 Dec) (R, 82 Bytes) ....................................................... 66

B.5.9. Release Zone Hold Register 0x0017h (23 Dec) (W, 10 Bytes) ........................................... 66

B.5.10. Hold Zone Register 0x0018h (23 Dec) (W, 10 Bytes) .......................................................... 66

B.5.11. MZ Hold Mode ...................................................................................................................... 66

B.5.12. Fault Log Register 0x1900-01 (6400-6401 Dec) (R, 302 Bytes).......................................... 67

B.5.13. Flow Log Register 0x001F (31 Dec) (R, 142 Bytes) ............................................................ 67

B.5.14. Alarm Log Register 0x1A00-02 (6656-58 Dec) (R, 582 Bytes) ............................................ 67

B.5.15. Service Mode Register 0x001B (27 Dec) (W, 10 Bytes) ...................................................... 67

B.5.16. Release Service Mode 0x001C (28 Dec) (W, 10 Bytes) ...................................................... 67

B.5.17. MZ Service Mode ................................................................................................................. 68

B.5.18. PPM Register 0x001E (30 Dec) (R, 32 Bytes) ..................................................................... 68

B.5.19. Zone Log Registers 0x3xyy (R, 1502 Bytes)........................................................................ 68

APPENDIX C. SYSTEM MENU MAP ....................................................................................................... 69

APPENDIX D. AGENCY APPROVALS ................................................................................................... 73

APPENDIX E. SERVICE CEN T ER S ........................................................................................................ 75

INDEX ......................................................................................................................................................... 77

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SECTION 1. INTRODUCTION

1.1. About This Manual

Thank you for investing in a Bacharach Multi-Zone Gas Monitor. To assure operator safety and the proper
use of the monitor please read this manual. It provides important information on the installation, operation,
maintenance, and servicing of the monitor and display module.

If you have a working knowledge of your gas monitor, you will find this manual useful as a reference tool. If
you are new to the use of gas monitors, this document is educational in the principles of gas detection and
the proper operation of this device.

1.2. Warning and Cauti on Conventions

When used in this manual or as labeled on the gas monitor, the following hazard symbols and/or
associated words are defined as follows.

WARNING: This symbol and/or the use of the word WARNING indicates a potential
hazard associated with the use of this equipment. It calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to, could result
in death or serious injury.

WARNING: This symbol and/or the use of the word WARNING indicates a potential
hazard from electrical sh o ck. It calls attention to a procedure, practice, condition, or the
like, which if not correctly performed or adhered to, could result in death or serious injury.

CAUTION: This symbol and/or the use of the word CAUTION indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure, practice,
condition, or the like, which if not correctly performed or adhered to, could result in minor or
moderate injury.

IMPORTANT: The use of the word IMPORTANT in this manual calls attention to a
procedure, practice, condition, or the like, which if not correctly performed or adhered to,
could result in incorrect performance of or damage to the equipment and may void the
warranty.

1.3. Safety Precautions

WARNING: This instrument has not been designed to be intrinsically safe for use in areas

classified as hazardous locations. For your safety, DO NOT
locations.

WARNING: This is NOT a safety device. Some gases which this instrument can detect
may be combustible/flammable. When properly configured, this instrument is designed to
alarm at concentrations that are lower than the explosive limit of the gas. As such, it is the
buyer’s responsibility to initiate an immediate planned response to any gas leaks as soon
as they are detected. This equipment should NEVER be used to measure or sample
gases at or above their respective lower explosive limits.

IMPORTANT: The gas monitor uses a universal power supply that is capable of accepting
inputs of 100 to 240 VAC, 50/60 Hz. The monitor’s power consumption is 20 Watts. It is
highly recommended that the monitor be connected directly to the AC power source,
preferably on its own circuit with UPS or surge protection.

P/N: 3015-5074 Rev 13 1

use it in hazardous (classified)