Emerson GW-810-3760 User manual

Refrigerant Leak Detection System
(RLDS) Installation and Operation
Manual
026-1309 Rev 11

Emerson | Digital Solutions
1065 Big Shanty Road NW, Suite 100
Kennesaw, GA 30144
770-425-2724 • www.climate.emerson.com
For technical support, email ColdChain.TechnicalServices.com
CE/FCC Compliance Notice Information
Class A compliance for RLDS under CE Requirements. Meets Part 15 Subpart B
requirements of the FCC Rules. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
ETL, report no 3151009LAX-001 to:
ANSI/UL 61010-1
CAN/CSA 22.2 No 61010-1 & CE Mark
READ ALL INSTRUCTIONS CAREFULLY
If the equipment is not used in the manner specified by the manufacturer, the protection
provided by the equipment may be impaired.

Table of Contents • v
CONTENTS
1 INTRODUCTION.......................................................................................................................................................... 1
1.1. HOW TO USE THIS MANUAL ........................................................................................................................................ 1
1.2. NOTES........................................................................................................................................................................... 1
1.3. SAFETY PRECAUTIONS.................................................................................................................................................. 1
1.3.1. AC Power Supply .................................................................................................................................................. 1
1.3.2. Protective Grounding............................................................................................................................................ 1
1.3.3. Explosive Atmosphere ........................................................................................................................................... 1
1.3.4. Proper Exhaust Venting ........................................................................................................................................ 1
1.3.5. Working Inside Instrument.................................................................................................................................... 1
1.3.6. Misuse and Modifications to the Instrument......................................................................................................... 2
1.3.7. In Case of Malfunction.......................................................................................................................................... 2
1.3.8. RLDS Fusing ......................................................................................................................................................... 2
1.3.9. Installation Category ............................................................................................................................................ 2
1.3.10. Altitude Limit...................................................................................................................................................... 2
1.3.11. Cleaning ............................................................................................................................................................. 2
1.4. WARNING AND CAUTION CONVENTIONS ..................................................................................................................... 2
1.4.1. Warning................................................................................................................................................................. 2
1.4.2. Caution.................................................................................................................................................................. 2
1.4.3. Important............................................................................................................................................................... 2
2 FUNCTIONAL OVERVIEW ....................................................................................................................................... 3
2.1. GENERAL DESCRIPTION................................................................................................................................................ 3
2.2. COMMUNICATION OPTIONS .......................................................................................................................................... 3
2.3. UNDERSTANDING MONITORING LEVELS ...................................................................................................................... 4
2.4. RESPONSE TO THE PRESENCE OF MULTIPLE REFRIGERANTS ....................................................................................... 4
2.5. SUGGESTED LOCATION OF SAMPLING POINTS ............................................................................................................. 4
2.6. RLDS HARDWARE SPECIFICATIONS............................................................................................................................. 6
3 RLDS INSTALLATION ............................................................................................................................................... 8
3.1. RLDS - INSTALLATION CONSIDERATIONS ................................................................................................................... 8
3.1.1. Warnings and Cautions......................................................................................................................................... 8
3.1.2. Inspection .............................................................................................................................................................. 8
3.1.3. Monitor Location .................................................................................................................................................. 8
3.1.4. Mounting Instructions ........................................................................................................................................... 9
3.2. RLDS - CONNECTING GAS SAMPLE LINES ............................................................................................................... 10
3.2.1. Overview ............................................................................................................................................................. 10
3.2.2. Tubing Considerations........................................................................................................................................ 10
3.2.3. Connecting Purge Line ....................................................................................................................................... 11
3.2.4. Connecting Exhaust Line .................................................................................................................................... 11
3.2.5. Connecting Sample Intake Lines......................................................................................................................... 11
3.2.6. Considerations .................................................................................................................................................... 12
3.3. INSTALLING AN OPTIONAL SPLITTER KIT .................................................................................................................. 13
3.3.1. Connecting the Water Trap................................................................................................................................. 13
3.4. RLDS INTERIOR COMPONENTS .................................................................................................................................. 14
3.5. RLDS ELECTRICAL WIRING....................................................................................................................................... 14
3.5.1. Warnings and Cautions....................................................................................................................................... 15
4 CONNECTING COMMUNICATION DEVICES ................................................................................................... 16
4.1. E2 MODBUS DIRECT SUPPORT FOR RLDS .............................................................................................................. 16
4.1.1. Network Connection to E2 .................................................................................................................................. 16

vi • RLDS I&O Manual 026-1309 Rev 11
4.1.1.1. COM Port Associations - E2 Versions 3.xx and Below ................................................................................................... 16
4.1.1.2. COM Port Associations - E2 Versions 4.0 and Above..................................................................................................... 16
4.1.1.3. E2 Termination ................................................................................................................................................................. 17
4.1.2. E2 Setup of RLDS................................................................................................................................................ 17
4.1.2.1. Set Up Network Ports ....................................................................................................................................................... 17
4.1.2.2. Add and Connect RLDS .................................................................................................................................................. 17
4.2. E2, EINSTEIN, AND REFLECS CONTROLLERS (THE RLDS GATEWAY BOARD) ....................................................... 19
4.2.1. Powering the Gateway Board ............................................................................................................................. 19
4.2.2. Gateway Board Networking................................................................................................................................ 20
4.2.2.1. Changing Terminator Switch Settings.............................................................................................................................. 20
4.2.2.2. RLDS Node Address ........................................................................................................................................................ 20
4.2.3. Connecting to an E2, Einstein, or REFLECS Site Controller............................................................................. 21
4.2.4. Connecting the Gateway Board to the E2, Einstein, or REFLECS Network ...................................................... 21
4.2.4.1. Wire Connection .............................................................................................................................................................. 21
4.2.4.2. Setting the Board Numbering Dip Switch ....................................................................................................................... 22
4.2.4.3. Setting the Baud Rate Dip Switches ................................................................................................................................. 23
4.2.4.4. Setting the RS485 I/O Termination Jumpers.................................................................................................................... 23
4.2.5. Gateway Board Status LEDs............................................................................................................................... 24
4.2.5.1. The General Status LED ................................................................................................................................................... 24
4.2.5.2. The Alarm LED ................................................................................................................................................................ 24
4.2.5.3. RS485 I/O Network Status LED....................................................................................................................................... 24
4.2.5.4. Receiver Bus Network Status LED................................................................................................................................... 24
4.3. INTEGRATING WITH BUILDING MANAGEMENT SYSTEMS ........................................................................................... 24
4.4. CONNECTING TO A BUILDING MANAGEMENT SYSTEM............................................................................................... 25
4.5. TERMINATING MULTIPLE MONITORS ......................................................................................................................... 26
4.6. PC SOFTWARE ............................................................................................................................................................ 27
4.6.1. Operation ............................................................................................................................................................ 27
4.6.2. Saving and Sending Programs ............................................................................................................................ 27
4.6.3. Trend Data .......................................................................................................................................................... 28
4.6.4. Converting the TREND Text File to a Microsoft Excel File ............................................................................... 28
4.6.5. Saving and Printing Screens and Logs ............................................................................................................... 28
4.6.6. USB Type Laptops............................................................................................................................................... 28
4.7. OPTIONAL CURRENT LOOP INTERFACES .................................................................................................................... 28
4.7.1. Optional 4–20 mA DC Outputs ........................................................................................................................... 28
4.7.2. 4-20 mA DC Connections.................................................................................................................................... 29
5 RLDS - CONNECTING EXTERNAL ALARMS..................................................................................................... 31
5.1. OVERVIEW .................................................................................................................................................................. 31
5.2. CONNECTION............................................................................................................................................................... 31
6 PROGRAMMING SETUP AND UI NAVIGATION FOR RLDS - DISPLAY SCREENS.................................. 33
6.1. INITIAL POWER UP...................................................................................................................................................... 33
6.2. DATA DISPLAY SCREEN.............................................................................................................................................. 33
6.3. NAVIGATE TO THE FIRST SETUP SCREEN ................................................................................................................... 33
6.4. NAVIGATE TO THE SECOND SETUP SCREEN ............................................................................................................... 34
6.5. LOCATION ................................................................................................................................................................... 34
6.6. NUMBER OF ZONES INSTALLED.................................................................................................................................. 34
6.7. ALARM ACKNOWLEDGE (ACK) - MODE..................................................................................................................... 34
6.8. AUDIBLE ALARM ........................................................................................................................................................ 35
6.9. ZONE HOLD ................................................................................................................................................................ 35
6.10. DETECTION LIMIT ..................................................................................................................................................... 35
6.11. LOOP MODE .............................................................................................................................................................. 35
6.12. LOOP2 FACTOR ........................................................................................................................................................ 35
6.13. RE-ZERO MODE ....................................................................................................................................................... 36
6.14. NAVIGATING TO THE THIRD SETUP SCREEN ........................................................................................................... 36

Table of Contents • vii
6.15. BAUD RATE .............................................................................................................................................................. 36
6.16. NODE ADDRESS ....................................................................................................................................................... 36
6.17. PASSWORD............................................................................................................................................................... 37
6.18. ADDITIONAL SERVICE FEATURES............................................................................................................................ 37
6.19. SERVICE TIMEOUT .................................................................................................................................................... 37
6.20. DEG DIGIPOT ........................................................................................................................................................... 37
6.21. NODE ADDRESS ........................................................................................................................................................ 38
6.22. SENSOR TEMPERATURE COEFFICIENT (FOR FACTORY USE ONLY) ......................................................................... 38
6.23. PASSWORD................................................................................................................................................................ 38
6.24. ACQUIRING TEMPERATURE COEFFICIENT (FACTORY USE ONLY) .......................................................................... 38
6.25. R DIGIPOT................................................................................................................................................................ 38
6.26. ESTABLISHING THE CO2 BASELINE ......................................................................................................................... 38
7 GENERAL OPERATION OF RLDS - UI................................................................................................................. 40
7.1. FUNCTIONAL OVERVIEW ............................................................................................................................................ 40
7.2. THE ZONE SETUP SCREEN .......................................................................................................................................... 40
7.2.1. Location .............................................................................................................................................................. 40
7.2.2. Gas/Refrigerant Type.......................................................................................................................................... 40
7.2.3. Distance + EXH.................................................................................................................................................. 40
7.2.4. Temperature at Zone........................................................................................................................................... 40
7.2.5. Current Detection Reading ................................................................................................................................. 40
7.2.6. Log Interval......................................................................................................................................................... 41
7.3. NAVIGATING TO THE SECOND ZONE SETUP SCREEN ................................................................................................. 41
7.3.1. Leak Level ........................................................................................................................................................... 41
7.3.2. Spill Level............................................................................................................................................................ 41
7.3.3. Evacuation Level................................................................................................................................................. 41
7.3.4. Resetting the Peak PPM Value ........................................................................................................................... 41
7.4. ALARM CONDITIONS .................................................................................................................................................. 41
7.5. FAULT CONDITIONS.................................................................................................................................................... 42
7.6. ALARMS...................................................................................................................................................................... 42
7.6.1. Functional Overview........................................................................................................................................... 42
7.6.2. Responding to Alarms ......................................................................................................................................... 42
7.6.3. Alarm Detail Screen............................................................................................................................................ 42
7.6.4. Acknowledging Alarms ....................................................................................................................................... 43
7.6.5. Silencing an Alarm.............................................................................................................................................. 43
7.6.6. Clearing the Alarm Even Log ............................................................................................................................. 44
7.7. SYSTEM FAULTS ......................................................................................................................................................... 44
7.7.1. Functional Overview........................................................................................................................................... 44
7.7.2. Navigating to the Fault Screen ........................................................................................................................... 45
7.7.2.1. Critical Faults................................................................................................................................................................... 45
7.7.2.2. Non-Critical Faults ......................................................................................................................................................... 46
7.7.3. Reset to Factory Default Settings........................................................................................................................ 46
7.7.4. Clearing System Faults ....................................................................................................................................... 46
7.7.5. Viewing Fault Log............................................................................................................................................... 47
7.7.6. Viewing Flow Log ............................................................................................................................................... 47
7.8. THE TREND SCREEN ................................................................................................................................................... 47
7.8.1. Navigating to the Trend Screen .......................................................................................................................... 47
7.9. THE CALIBRATION SCREEN ........................................................................................................................................ 48
7.9.1. Overview ............................................................................................................................................................. 48
7.9.2. Navigating to the Calibration Screen ................................................................................................................. 48
7.9.3. Calibration Procedure ........................................................................................................................................ 48
7.9.4. Adjusting Calibration Factor.............................................................................................................................. 49
7.9.5. CO2 Atmospheric Concentration
(RLDS-CO2 Units Only) ................................................................................................................................................. 49

viii • RLDS I&O Manual 026-1309 Rev 11
7.9.6. Programming New Gases.................................................................................................................................... 50
7.10. ZONE HOLD MODE ................................................................................................................................................... 50
7.11. THE DIAGNOSTIC SCREEN ....................................................................................................................................... 51
7.11.1. Navigating to the Diagnostic Screen................................................................................................................ 51
7.11.2. Diagnostic Screen Overview ............................................................................................................................ 52
8 QUICK SETUPS FOR HAND-HELD TERMINAL (HHT).................................................................................... 53
8.1. TIME/DATE SETUP ...................................................................................................................................................... 53
8.2. ZONE SETUP................................................................................................................................................................ 53
8.2.1. General Configuration 1 Screen ......................................................................................................................... 53
8.2.2. General Configuration 2 Screen ......................................................................................................................... 54
8.2.3. Zone Config Screen 1 .......................................................................................................................................... 54
8.2.4. Zone Config Screen 2 .......................................................................................................................................... 55
8.3. STATUS OPTION SCREEN ....................................................................................................................................... 55
8.3.1. Zone Status Screen .............................................................................................................................................. 55
8.3.2. General Controller (CTRL STATUS) Screen ...................................................................................................... 56
9 HAND-HELD TERMINAL (HHT) FOR USE WITH THE GATEWAY AND RLDS CONTROLLER ........... 57
9.1. HHT KEY OPERATIONS ............................................................................................................................................. 57
10 MAIN SCREENS ....................................................................................................................................................... 58
10.1. HOME SCREEN (F1 SCREEN).................................................................................................................................... 58
10.2. RLDS ENABLE SCREEN........................................................................................................................................... 58
10.3. SELECT RLDS SCREEN (F2 SCREEN).................................................................................................................... 58
10.4. OPERATION SELECT (OPTION) SCREEN ................................................................................................................ 59
10.4.1. RLDS STATUS (STATUS OPTION) Screen..................................................................................................... 59
10.4.2. RLDS FAULTS (SYSTEM FAULTS) screen..................................................................................................... 59
10.4.3. RLDS Configuration Option (CONFIG OPTION) Screen............................................................................... 60
10.4.4. General Configuration 1 Screen ...................................................................................................................... 60
10.4.5. General Configuration 2 Screen ...................................................................................................................... 60
10.4.6. Zone Config Screen 1 ....................................................................................................................................... 61
10.4.7. Zone Config Screen 2 ....................................................................................................................................... 61
10.4.8. Time/Date Screen ............................................................................................................................................. 62
10.4.9. Calibrate Gas Screen 1 .................................................................................................................................... 62
10.4.10. Calibrate Gas Screen 2 .................................................................................................................................. 62
10.4.11. Calibrate Gas Screen 3 .................................................................................................................................. 62
10.4.11.1. Calibrate Gas Screen 3 Continued ............................................................................................................................... 63
10.5. STATUS OPTION SCREEN .................................................................................................................................... 63
10.5.1. Zone Status Screen .......................................................................................................................................... 63
10.5.2. General Controller (CTRL STATUS) Screen .................................................................................................. 63
10.5.3. DIAGNOSTICS Screen 1: Sensor Data Register ............................................................................................ 64
10.5.4. Screen 2: Sensor Data Register ....................................................................................................................... 64
10.5.5. Screen 3: Sensor Data Register ....................................................................................................................... 64
10.5.6. Screen 4: Sensor Data Register ....................................................................................................................... 65
10.5.7. Screen 5: Sensor Data Register ....................................................................................................................... 65
10.5.8. Screen 6: Sensor Data Register ....................................................................................................................... 65
10.5.9. Screen 7: Communication Statistics................................................................................................................. 65
11 RLDS SETUP ON REFLECS, E2, EINSTEIN, AND SUPERVISORY CONTROLLERS ............................... 66
11.1. REFLECS SETUP FOR RLDS ................................................................................................................................... 66
11.2. E2 VERSION 3.01 AND BELOW SETUP FOR RLDS (WITHOUT GATEWAY)................................................................ 66
11.3. EINSTEIN SETUP FOR RLDS ..................................................................................................................................... 68
11.4. SUPERVISORY CONTROLLER SETUP FOR RLDS ...................................................................................................... 68
11.4.1. Adding Application........................................................................................................................................... 68

Table of Contents • ix
11.4.2. Edit Application ............................................................................................................................................... 69
11.4.3. General............................................................................................................................................................. 69
11.4.4. Zone Setup........................................................................................................................................................ 69
11.4.5. Zone Alarms Leak/Spill/Evac........................................................................................................................... 69
12 RLDS MAINTENANCE ........................................................................................................................................... 71
12.1. WARNINGS AND CAUTIONS ..................................................................................................................................... 71
12.2. REPLACEMENT PARTS OVERVIEW............................................................................................................................ 71
12.3. REPLACEMENT PARTS AND OPTIONAL ACCESSORIES .............................................................................................. 73
12.4. TROUBLESHOOTING .................................................................................................................................................. 74
APPENDIX A: RECOMMENDED REFRIGERANT GAS ALARM SETTINGS ................................................... 77
APPENDIX B: SYSTEM MENU MAP .......................................................................................................................... 79

How to Use This Manual Introduction • 1
1 Introduction
1.1. How to Use This
Manual
Thank you for investing in an Emerson 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.This manual provides important
information on how to install, operate, and service the
RLDS.
Please read this manual carefully before use.
If you have a working knowledge of refrigerant
monitors, you will find this manual useful as a
reference tool. If you are new to the use of refrigerant
monitors, this document is educational in the
principles of gas detection and the proper operation of
this device.
1.2. Notes
Emerson reserves the right to change the operation or
specifications of this instrument at any time without
notice.
If any errors or ambiguities are discovered in this
manual, promptly inform Emerson.
No part of this manual may be reproduced or
recreated, in any form or by any means, without the
express prior permission of Emerson.
1.3. Safety Precautions
1.3.1. AC Power Supply
Ensure the source voltage matches the voltage of the
product before energizing the equipment.
The RLDS 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 RLDS be placed on
a separate circuit (with UPS or surge protection) and
be connected directly to the AC power source.
A switch or circuit breaker rated 1.0 A, 250 VAC,
with a minimum terminal spacing of 3.0 mm must be
attached to the monitor’s AC power leads. This
switch must also be located in close proximity to the
monitor, and be within easy reach of the operator.
This switch should also be clearly marked as the
monitor’s type of equipment.
• A switch or circuit-breaker must be included in the
building installation
• The switch must be in close proximity to the
equipment and within easy reach of the
operator
• The switch must be clearly marked as the
disconnecting device for the equipment
1.3.2. Protective Grounding
Under no circumstances should the RLDS be
operated without connection to a protective ground.
Doing so poses a potential shock hazard and is also a
violation of electrical safety standards applicable to
this type of equipment.
1.3.3. Explosive Atmosphere
Do not operate this equipment in the presence of
flammable liquids, vapors, or aerosols. Operation of
any electrical instrument in such an environment
constitutes a safety hazard.
1.3.4. Proper Exhaust Venting
It is imperative that the exhaust port on this
instrument be properly vented as described in this
manual. Failure to do so constitutes a safety hazard.
1.3.5. Working Inside Instrument
Extreme care should be exercised when accessing the
interior of the monitor. Only qualified electrical
maintenance personnel should perform connections
and adjustments. Always de-energize the power
supply before opening the monitor’s enclosure.

2 • RLDS I&O Manual 026-1309 Rev 11
1.3.6. Misuse and Modifications to
the Instrument
The protection provided by the monitor may be
impaired if the monitor is used in a manner not
specified by Emerson. Modifications to this monitor,
not expressly approved, will void the warranty.
1.3.7. In Case of Malfunction
Do not continue to use this equipment if there are any
symptoms of malfunction or failure. In the case of
such occurrence, de-energize the power supply and
contact a qualified repair technician or the nearest
Service Center. ONLY the provided knockouts are to
be used for electrical and communication wiring.
Drilling into the box will void the warranty.
1.3.8. RLDS Fusing
1.3.9. Installation Category
Installation Category II, Pollution Degree II, as
defined by UL.
1.3.10. Altitude Limit
RLDS 6,562 ft (2,000 m)
1.3.11. Cleaning
If, during period maintenance inspection it
becomes necessary to clean the outside of the case,
use a DRY CLOTH. To avoid shock hazard and/or
equipment damage, DO NOT USE SOAP AND
WATER.
1.4. Warning and Caution
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.
1.4.1. Warning
This symbol and/or the use of the word WARNING
indicates a potential hazard from electrical shock
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.
1.4.2. Caution
This symbol and/or use of the word CAUTION in
this manual denotes 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 bodily injury, and damage to the
equipment.
1.4.3. 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.
F1, F2
1AMP, 250VAC
FAST ACTING
(Type “F”)
Table 1-1 - Fusing Requirements
WARNING:
CAUTION:
IMPORTANT:

General Description Functional Overview • 3
2 Functional
Overview
2.1. General Description
Gas monitors are specified to support compliance to
federal, state and local safety codes governing
emissions. Avoiding significant refrigerant loss
reduces equipment replacement costs, maintains
equipment efficiency, promotes safety, and protects
the environment.
The RLDS provides for the continuous monitoring of
refrigerant gas levels in up to 16 separate test zones or
channels. The instrument is easily programmed to
monitor a variety of gases (dependent on the
particular model) and independent leak (small), spill
(medium), and evacuation (large) levels may be
designated for each zone. The instrument also retains
a log of previous readings that can be easily accessed
for analysis.
An audible alarm and front panel indicators are
provided to signal alarm and fault conditions, and
relay contacts are provided that can be used to trigger
external alarm devices in the event of a system fault,
or if a leak (small), spill (medium), or evacuation
(large) level of gas is detected. The system also may
be fitted with an optional two-channel 4-20mA
current loop board for connection to remote
monitoring equipment.
The RLDS requires only minor periodic maintenance
such as the occasional replacement of filters. The
monitor incorporates active diagnostics that
continuously check the system for proper operation.
A front panel indicator is provided to alert an operator
of system malfunctions, and fault codes are generated
that enable the user to identify the cause of the fault.
All 800# models of the RLDS come with the number
of line-end filters (plus one extra) to match the
number of zones for each model.
2.2. Communication
Options
The RLDS features full two-way communications via
an RS485 interface. MODBUS RTU is the
communication protocol standard and can be
connected directly to an E2 or Supervisor controller.
The instrument can be connected directly to a
Building Management System or it may be operated
as a stand-alone system. An RS-232C port is also
provided for connection to a PC. This enables the
monitor to be set up from a personal computer.
Please refer to Section 4, Connecting
Communication Devices for a more complete
discussion of communication protocols.
Figure 2-1 - RLDS Front View

4 • RLDS I&O Manual 026-1309 Rev 11
2.3. Understanding
Monitoring Levels
Effective use of this instrument requires an
understanding of what constitutes reasonable alarm
setpoints for the type of gases being monitored.
All AC&R systems leak some refrigerant. Refrigerant
manufacturers define allowable exposure levels and
threshold limit values in units of parts per million
(PPM). In a good “tight” installation these
background levels will be acceptably low and often
do not require corrective action. You can reduce
nuisance alarms and needless service calls if the alarm
levels are set at practical limits.
Recommended monitoring levels based on
compliance to ANSI/BSR ASHRAE 15-2007 and
ASHRAE Safety Code 34-2007 have been developed
and are listed in Appendix A: Recommended
Refrigerant Gas Alarm Settings Section.
Setting the unit at these recommended alarm levels
will satisfy the needs of most users. However, the
PPM levels generated by system leaks into the
environment are greatly influenced by the volume of
air in the sampling area, air circulation, size of the
leak, distance to the monitoring point, and a host of
other variables. In some cases the set points may need
to be adjusted either up or down to achieve effective
monitoring. Please contact your representative (770-
425-2724) for assistance in obtaining these levels.
2.4. Response to the
Presence of Multiple
Refrigerants
The RLDS is a refrigerant level monitor, not a gas
analyzer. You must program the monitor to test for a
specific refrigerant in each zone, and it will only
return accurate concentration readings for that
particular refrigerant. If a leak occurs of another
refrigerant gas type, the monitor may return incorrect
readings.
Most applications only require detection of a single
refrigerant and the problems that are associated with
monitoring multiple gases are rarely an issue. If there
is a possibility of multiple refrigerants leaking in the
same sampling zone, you should carefully consider
which refrigerant compound you program the unit to
monitor.
2.5. Suggested Location of
Sampling Points
At the point of origin of a refrigerant leak, the gas is
nearly pure (highly concentrated). As the refrigerant
is dispersed into the air, the gas molecules diffuse,
causing a dilution of the original concentration. The
RLDS measures the refrigerant concentration at the
sample collection point, so if the termination of the
collection line is not at the exact point of the
refrigerant leak, the unit will read a diluted mixture of
the refrigerant gas and air.
Gases of interest may be heavier or lighter than air
and may collect above or below the point of the leak.
Therefore sampling point placement is critical and
must take into account properties of the target gas and
air flow within the space.
DO NOT block any of the zones. Unused zones may
be disabled by setting the distance parameter to zero
feet in the zone setup screen.
The RLDS should be centrally located in the
mechanical room and be readily accessible for easy
visual monitoring and servicing. The combined
length of sample tubing, plus exhaust tubing, should
not exceed 1200 feet (366 meters) for any zone. The
fresh air purge line should draw from an area that does
not contain any gas other than fresh air. The exhaust
line should run to an outside location if possible.
Ideally, two to three pick up points spaced around
each chiller will provide sufficient coverage. It may
Leak Detector Gas Type Sampling Point
Location
Multi-Zone Halogen Mount sampling
points 6-18 inches
above floor
Multi-Zone CO2 (Carbon
Dioxide)
Mount sampling
points 4-6 feet above
floor (breathing zone)
Table 2-1 - Sampling Point Locations
NOTE: The combined length of the purge line
and the exhaust line cannot exceed 500 feet
(152.4 meters).

Suggested Location of Sampling Points Functional Overview • 5
be necessary to perform a “smoke” test of the
mechanical room to determine the best locations. The
smoke test would provide the pattern of air currents
present in the mechanical room.
The RLDS should be kept dry. When used in a wet or
humid area, it is highly recommended to use the
optional water stop accessory to avoid internal
damage.
NOTE: For information about using the
RLDS in wet locations, see Section 3.2.6.,
Considerations.

6 • RLDS I&O Manual 026-1309 Rev 11
2.6. RLDS Hardware Specifications
Hardware Specifications
Product Type Multiple refrigerant gases and multiple area monitoring system for low level
continuous monitoring of CFC, HCFC, and HFC refrigerant gases used in most
commercial refrigeration systems. System design supports compliance to the
refrigerant monitoring requirements of ANS/BSR ASHRE 15-2007 and
ASHRAE Safety Code 34-2007.
Coverage 4-point standard, expandable to 16 points in 4-point increments
Detector Type Infrared Non-Dispersive
Gas Library:
CFC: R-11, R-12, R-113, R-114, R-502, HFP
HFC: R125, R-134a, R236FA, R245Fa, R32, R-404a (HP62), R-407a,
R-407c (AC9000), R-407F, R-410a (AZ20), R422a, R422d, R427a,
R-507 (AZ50), R-508b (SUVA95)
HCFC: R-123, R-124, R21, R-22, R227, R-23, R-401a (MP39), R-402a
(HP80), R-402b (HP81), R-408a, R-409a, R-500, R-503
Halon: H1211, H1301, H2402
Other: FA188, FC72, H1234YF, H1234ZE, N1230, N7100, N7200,
N7300, N7600, R424A, R426A, R438A, CUSTOM
Sensitivity All gases 1 PPM
Measuring Range All gases 0 to 10,000 PPM
Accuracy*Most gases ±1PPM ±10% of reading from 0-1000 PPM (R11, R22, and R113
±10 PPM ±15% of reading 0-1000 PPM)
*At reference environmental conditions (77°F/25°C, 45% RH
non-condensing, 1 ATM)
Front Panel 3 Indicator lights:
• Green = Monitor is powered on. LED glows during normal operation; flashes
when unit is in warm-up mode
• Red = Alarm. LED flashes when any point has exceeded the alarm setting
• Yellow = Fault. LED flashes when there is a system fault
Size/Weight 12.23”H x 13.7”W x 4.96”D (31.06 cm x 34.80 cm x 12.60 cm) / 15 lbs.
Temperature Drift ±0.3% of reading per degrees C
Sampling Mode Automatic or manual (hold)
Re-Zero Auto or on zone change
Response Time 5 to 315 seconds – depending on air line length and number of zones
System Noise Less than 40dB(A) @ 10 feet (3 meters)
Monitoring Distance 1200 ft. (365 meters) maximum for combined length of sample + exhaust
tubing (each zone)
Conditioned Signal Dual optional 4-20mAdc isolated outputs. Channel 1 = zone area,
Channel 2 = PPM
Table 2-2 - RLDS Specifications

RLDS Hardware Specifications Functional Overview • 7
Alarms Four SPDT alarm contacts rated 2A at 250 VAC (inductive) 5 A at 250 VAC
(resistive). Three are assigned to PPM level alarms, one assigned to system
faults.
Communications Full two-way communication with Building Management System via RS-485
serial interface. RS-232C communication port standard.
Power Safety Mode Fully automatic system reset. All programmed parameters retained.
Operating Temp 32°F to 122°F (0°C to 50°C)
Ambient Humidity 5% to 90% RH (non-condensing)
AC Power 100 to 240 VAC, 50/60 Hz, 20 W
Certification UL 61010-1, CAN/CSA 22.2 No. 61010 & CE Mark
Warranty 2 years from date of shipment
Altitude Limit 6,562 ft (2,000 m)
RLDS-CO2 Hardware Specifications
Product Type The RLDS-CO2 provides multiple area monitoring for low level continuous
monitoring of carbon dioxide gases used in most commercial systems. System
design supports compliance to the gas monitoring requirements of ANS/BSR
ASHRE 15-1994.
Gas Library: Carbon Dioxide (CO2)/R-744
Sensitivity 10 PPM
Measuring Range 300-8,000 PPM
Accuracy*Most gases ±5 PPM ±5% of reading from 300-1000 PPM, ±10% of reading
from 1001-3000 PPM
*At reference environmental conditions (77°F/25°C, 45% RH
non-condensing, 1 ATM)
Table 2-3 - RLDS-CO2 Specifications
Hardware Specifications
Table 2-2 - RLDS Specifications

8 • RLDS I&O Manual 026-1309 Rev 11
3 RLDS Installation
Standard accessories needed for a four (4)-point
System:
3.1. RLDS - Installation
Considerations
3.1.1. Warnings and Cautions
3.1.2. Inspection
The RLDS has been thoroughly inspected and tested
prior to shipment from the factory. Nevertheless, it is
recommended that the monitor be re-checked prior to
installation. Inspect the outside of the enclosure to
make sure there are no obvious signs of shipping
damage. Open the enclosure and inspect the interior
of the unit for loose components that may have
become dislodged during shipment. If damage is
discovered, please contact Technical Support for
assistance (770-425-2724).
3.1.3. Monitor Location
The RLDS should be centrally located in the facility
and should be easily accessible for visual monitoring
and servicing. Combined length of the intake sample
line and the exhaust line cannot exceed 1200 feet
(366 m) in length, but it is important to remember that
sampling cycle time is proportional to the total
number and length of individual sample lines.
Dirt, grease, and oils can adversely affect the
operation of the RLDS. The monitor should be
installed out of direct sunlight in a clean, dry area that
is not subject to temperature or humidity extremes.
Installation of the monitor in a mechanical room is
acceptable provided reasonable environmental
conditions exist. If there is a question, consider
installing the unit outside of the mechanical room in a
cleaner area of the facility.
Figure 3-1 - RLDS Diagram
Accessory Part Number
Five (5) Line-End Filters
(Assembly)
275-0300
Charcoal Filter 275-0275
RLDS Instruction Manual 026-1309
Table 3-1 - RLDS Accessories and Part Numbers
WARNING: Explosion hazard! Do not mount
or operate this equipment in an area that may
contain or in the presence of flammable
liquids, vapors, or aerosols. Operation of any electrical
equipment in such an environment constitutes a safety
hazard.
WARNING: Shock hazard! Always disconnect
the AC power before working inside the
equipment.
CAUTION: Drilling holes in the RLDS
enclosure may damage the unit and will void
the warranty. Please use the knockouts
provided for electrical connections.
CAUTION: The RLDS contains sensitive
electronic components that can be easily
damaged. Do not to touch nor disturb any of
these components.
NOTE: The mounting location of the monitor
should allow it to be easily accessible for visual
monitoring and servicing.

RLDS - Installation Considerations RLDS Installation • 9
3.1.4. Mounting Instructions
The enclosure utilizes keyhole mounting brackets designed for 1/4” (6.35 mm) fasteners. Locate the four screws
as shown in the diagram below and allow the screw heads to protrude approximately 1/4” (6.35 mm).
Hold the monitor flat against the mounting surface and allow it to slide down, engaging the screw heads in the
keyhole slots of the mounting brackets. Adjust the screws as necessary to hold the monitor securely against the
mounting surface.
NOTE: The RLDS should be installed plumb and level and securely fastened to a rigid mounting surface.
Figure 3-2 - RLDS Mounting Dimensions

10 • RLDS I&O Manual 026-1309 Rev 11
3.2. RLDS - Connecting Gas Sample Lines
3.2.1. Overview
Individual sample lines are run from the RLDS to each area of the facility to be monitored. Additionally, a purge
line is installed to provide clean air for resetting the infrared zero baseline. An exhaust line is installed to vent
residual gas away from the monitor. All air line connections, located on the left side of the enclosure, are
indicated in Figure 3-3.
3.2.2. Tubing Considerations
Use 1/4” (6.35 mm) outside diameter (0.04” wall) (1.02 mm wall) flex tubing for all air lines or equivalent. The
tubing should be clean and free of residual moisture or other contaminants. The tubing should be cut cleanly
with a sharp knife and care should be taken not to distort the tubing end.
To connect the air lines to the monitor simply push the tubing firmly onto the connector. To remove a line, press
the plastic ring on the connector with one hand while withdrawing the tube with your other hand.
Figure 3-3 - RLDS Side View (Tubing Connections)

RLDS - Connecting Gas Sample Lines RLDS Installation • 11
All tubing bends should have a radius of no less than
5” (12.7 cm) to ensure proper airflow. If kinks or
obstructions occur in any of the air lines, the
instrument may not function properly.
3.2.3. Connecting Purge Line
A purge line is an intake line that is required to draw
fresh air into the instrument and should not exceed
300 feet (91.44 mm) in length. It is advisable to
terminate the purge line outdoors, provided the input
is not exposed to rain, snow, ice, exhaust fumes, or
other airborne contaminates. If an outdoor installation
is impractical, the line should be run to an area inside
the facility that you are certain is not contaminated
with ambient gas. If this is not possible, an optional
charcoal filter assembly (P/N) can be used with the
RLDS to filter refrigerant from the purge line. It may
be mounted adjacent to the monitor. A line-end filter
(P/N) should be attached to the end of the purge line
when the charcoal filter is not used. Note that the
charcoal filter option must NOT be used in ammonia
or CO2 applications.
3.2.4. Connecting Exhaust Line
An exhaust line (¼” OD tubing) (6.35 mm) can be
used when it is required to vent gas samples away
from the instrument and should not exceed 300 feet
(91.44 meters). The exhaust line should terminate in a
location that is completely isolated from the purge
line termination point and other areas of the facility
that will be monitored. Ideally this line should
terminate outdoors in a location that is not exposed to
the elements. This line does not require a line-end
filter. If the exhaust line terminates outside the
building, position the tubing so that no water or
moisture can enter it.
3.2.5. Connecting Sample Intake
Lines
The RLDS is designed to accommodate up to 16
separate sample intake lines. The standard
configuration of the unit includes one manifold of
four intake connectors and one purge connector.
Additional manifolds can be easily installed to
increase monitoring capacity. Please contact
Technical Assistance (770-425-2724) for more
information. Additional
manifolds can be easily installed to increase
monitoring capacity (field installation kit and four
zone line end filter kit) zone line end filter kit.
Sample intake lines can be up to 1,200 feet (366 m)
when no exhaust tubing is used. Otherwise, the
combined length of the sample line and the exhaust
line cannot exceed 1,200 ft (366 m). All line
terminations should be positioned to reduce the
Figure 3-4 - Using PTC Connectors: Connecting (Left) and Disconnecting (Right)
IMPORTANT: (CO2 Only): Because CO2 is
present in ambient air, the purge line MUST
BE run outside, away from any known sources
of CO2 gas. An atmospheric CO2
concentration value can be manually entered by the
user in the CAL screen. CO2 is supported by RLDS-CO2
units. See Navigating to the Calibration Screen Section.

12 • RLDS I&O Manual 026-1309 Rev 11
possibility of mists, aerosols, oil, water, dust, or other
contaminates being drawn into the instrument. A line-
end filter (P/N 275-0315) should be attached to the
end of each sample intake line. General placement
guidelines are shown below, but air-flow dynamics
should also be considered (e.g., consider the effects of
exhaust fans which tend to draw target gas from the
space).
IMPORTANT: DO NOT block any of the zones.
Unused zones may be disabled by setting their length
parameter to zero feet in the Zone Setup screen
(Section 7.2., The Zone Setup Screen).
Depending on type of use and location of lines, the
end-of-line water stop filter assembly can be used to
prohibit moisture from entering the intake lines.
Three (3) end-of-line water stop filters are supplied
with a standard unit. Place the end of the intake line
into the blue receiver of the end of line water stop and
tighten sufficiently.
Note that only filter assembly, either the line-end
filter or end-of-line water stop, should be used for
each line.
Please refer to the earlier section (Section 2.5.,
Suggested Location of Sampling Points) to learn
more about where to locate the monitoring points.
3.2.6. Considerations
For maximum protection, the RLDS may be shut
down when a System Fault occurs. This might be
desired, for example, when the RLDS is used in wet
locations such as meat preparation rooms. When
water is pulled into the system, a System Fault will
occur, closing the fault relay located at the bottom of
the main control board. To turn power off to the
RLDS when this occurs, wire the fault relay into a
spare 16AI input. Route the power supply to the
RLDS through an 8RO output using the normally
closed contacts. Program the E2/Einstein to alarm the
fault input on a contact closure and turn on the 8RO
output when this occurs. This can be done using a
Digital Sensor Control application in the E2/Einstein.
Refer to the E2 Installation and Operation manual
(P/N 026-1614) for details on setting up a Digital
Sensor Control application.
Leak Detector Gas Type Sampling Point
Location
Multi-Zone Halogen Mount sampling
points 6-18 inches
above floor
Multi-Zone CO2 (Carbon
Dioxide)
Mount sampling
points 4-6 feet above
floor (breathing zone)
CAUTION: The introduction of contaminants
through the air intake lines can result in
serious and permanent damage to the monitor.

Installing an Optional Splitter Kit RLDS Installation • 13
3.3. Installing an Optional Splitter Kit
Splitter kits are made available which allow the RLDS unit to take gas sample readings from several sample
points while utilizing just a single zone. These kits are designed for use ONLY in confined/defined spaces with
high potential for leaks, such as food cases, cold rooms, refrigeration rack rooms, etc. 2-way (P/N 275-0304)
and 3-way (P/N 275-0305) splitter kits are available as optional accessories. Refer to instructions (supplied with
the kit) for detailed installation instruction.
3.3.1. Connecting the Water Trap
The water trap is an optional accessory for applications that result in water or condensation frequently entering
the intake lines. This is available in a manual style trap (P/N 275-0234) which is manually emptied once it has
become filled. Install the water trap close to the unit for the most effective results. The intake line may be cut
where the user finds appropriate (preferably close to monitor). Each side of the intake line should be inserted
into the receivers on either side of the water trap. Secure tightly. A replacement filter (P/N 275-0235) for the
water trap is available and is replaced by unscrewing the clear plastic cup of the water trap, pulling the filter
directly out (do not unscrew), and inserting the new filter into place. Replace the cup of the water trap. If desired,
an optional mounting bracket (275-0236) may be used to secure the water trap in place.
Figure 3-5 - Splitter Kit Installation
NOTE: The termination filter (P/N) or end-of-
line water stop filter (P/N) should be used,
regardless of the presence of a water trap.
NOTE: Extreme or humid temperatures may
cause water to condense in the tubes. A water
trap is highly recommended for use in these
scenarios.