Bacharach MVR-SC User manual

MVR-SC™ Refrigerant Leak Monitor
2 1100-2184 Rev 1
WARRANTY POLICY
Bacharach, Inc. warrants to buyer that at the time of delivery this product will be free from defects in material and manufacture and will conform
substantially to Bacharach, Inc.’s applicable specifications. Bacharach’s liability 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 seller at the factory of manufacture and shown to Bacharach, Inc.’s
reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by buyer to Bacharach, Inc. within one
(1) year after the date of delivery of this product by Bacharach, Inc.
Bacharach, Inc. warrants to buyer that it will convey good title to this product. Bacharach’s liability and buyer’s remedy under this warranty of title are
limited to the removal of any title defects or, at the election of Bacharach, to the replacement of this product or parts thereof that are defective in title.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT
ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the buyer shall be limited to those provided herein to the
exclusion of any and all other remedies including, without limitation incidental or consequential damages. No agreement varying or extending the
foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.
Register Your Warranty by Visiting: www.mybacharach.com/warranty-registration/
SERVICE POLICY
Bacharach, Inc. maintains a service facility at the factory. Some Bacharach distributors / agents may also have repair facilities; however, Bacharach
assumes no liability for service performed by anyone other than Bacharach personnel. Repairs are warranted for 90-days after date of shipment
(sensors, pumps, filters and batteries have individual warranties). Should your analyzer require non-warranty repair, you may contact the distributor from
whom it was purchased or you may contact Bacharach directly.
If Bacharach is to do the repair work, send the controller, prepaid, to the closest service center. Prior to shipping equipment to Bacharach, visit
www.mybacharach.com for a Returned Merchandise Authorization Number (RMA #). All returned goods must be accompanied by a RMA #. Pack the
equipment securely (in its original packing, if possible), as Bacharach cannot be held responsible for any damage incurred during shipping to our facility.
Always include your RMA #, shipping address, and telephone number, contact name, billing information and a description of the defect as you perceive
it. You will be contacted with a cost estimate for expected repairs prior to the performance of any service work. For liability reasons, Bacharach has a
policy of performing all needed repairs to restore the controller to full operating condition.
NOTICES
Product improvements and enhancements are on-going, 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.
No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Bacharach, Inc.
Copyright © 2020, Bacharach, Inc., All Rights Reserved.
BACHARACH is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks and logos referenced herein belong to their
respective companies.

MVR-SC™ Refrigerant Leak Monitor
1100-2184 Rev 1 3
Table of Contents
SECTION 1. INTRODUCTION 4
1.1 About this Manual............................................................................................................................................................................... 4
1.2 Iconography........................................................................................................................................................................................ 4
1.3 General Safety Statements................................................................................................................................................................. 4
SECTION 2. PRODUCT DESCRIPTION 5
2.1 Product Overview ............................................................................................................................................................................... 5
2.2 Design Features ................................................................................................................................................................................. 5
2.3 Bill of Materials ................................................................................................................................................................................... 5
2.4 Specifications ..................................................................................................................................................................................... 6
2.4.1 Hardware Specification.............................................................................................................................................................. 6
2.4.2 Network Specifications .............................................................................................................................................................. 6
2.5 Components ....................................................................................................................................................................................... 7
2.5.1 Network Components................................................................................................................................................................ 8
SECTION 3. NETWORK OVERVIEW 9
SECTION 4. INSTALLATION 10
4.1 Warnings & Cautions........................................................................................................................................................................ 10
4.2 Preliminary Inspection ...................................................................................................................................................................... 10
4.3 Suitable / Appropriate Locations....................................................................................................................................................... 10
4.4 Mounting Instructions........................................................................................................................................................................ 11
4.5 Electrical and Communications Wiring.............................................................................................................................................. 12
4.6 Relay Wiring ..................................................................................................................................................................................... 13
4.7 Connecting Modbus Gateways (1100-2198, MOXA MGate MB3170) .............................................................................................. 13
4.8 Connecting Ethernet Network Switches (1100-2172, MOXA EDS-208A) ......................................................................................... 14
4.9 Connecting MVR-300’s..................................................................................................................................................................... 15
SECTION 5. COMMISSIONING 16
5.1 System Overview.............................................................................................................................................................................. 16
5.2 Commissioning MVR-SC .................................................................................................................................................................. 19
5.2.1 Floorplan Spreadsheet ............................................................................................................................................................ 19
5.2.2 Floorplan Spreadsheet Setup.................................................................................................................................................. 20
5.2.3 Upload Floorplan ..................................................................................................................................................................... 20
5.2.4 System Time and Date ............................................................................................................................................................ 21
5.3 Commissioning MVR-300’s .............................................................................................................................................................. 22
5.3.1 MVR-300 Firmware Version .................................................................................................................................................... 22
5.3.2 MVR-300 Factory Reset.......................................................................................................................................................... 22
5.3.3 Method 1: Modbus ID Auto-Assign .......................................................................................................................................... 23
5.3.4 Method 2: Set Modbus ID Manually......................................................................................................................................... 24
5.4 Commissioning Gateways ................................................................................................................................................................ 24
5.4.1 Change Gateway IP Address .................................................................................................................................................. 25
SECTION 6. OPERATION 26
SECTION 7. TROUBLESHOOTING 26
SECTION 8. ADDITIONAL INFORMATION 27
8.1 Disposing of the Instrument .............................................................................................................................................................. 27
8.2 Service Center Locations.................................................................................................................................................................. 27

MVR-SC™ Refrigerant Leak Monitor
4 1100-2184 Rev 1
SECTION 1. INTRODUCTION
1.1 About this Manual
Thank you for investing in a Bacharach MVR-SC Refrigerant Leak Monitor. To ensure operator safety and the proper use of
the controller, please read the contents of this manual for important information on the operation and maintenance of the
instrument.
1.2 Iconography
1.3 General Safety Statements
Alert Icon Description
Danger An imminently hazardous situation which, if not avoided, will result in death or serious injury.
Warning A potentially hazardous situation which, if not avoided, could result in death or serious injury.
Warning Potential electrical shock hazard which, if not avoided, could result in death or serious injury.
Caution
A potentially hazardous situation which, if not avoided, could result in physical injury or damage to the product
or environment. It may also be used to alert against unsafe practices.
Important Additional information on how to use the product.
DANGER: This product HAS NOT been designed for use in hazardous locations. Failure to comply may result in
personal injury or death.
WARNING: NEVER connect the product’s 24V DC inputs directly to AC power supply.
WARNING: DO NOT apply power until all wiring has been completed.
CAUTION: The protection provided by this product may become impaired if it is used in a manner not specified by the
manufacturer. Modifications to this instrument, not expressly approved, will void the warranty.
CAUTION: 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 Bacharach
Service Center.
IMPORTANT: Before using this product, carefully read and strictly follow the instructions in the manual. Ensure that all
product documentation is retained and available to anyone operating the instrument.
MPORTANT: The MVR-SC must be installed by a suitably qualified technician who will install this unit in accordance
with these instructions and the standards in their industry / country. This document is only intended as a guide, and the
manufacturer bears no responsibility for the installation or operation of this unit.
IMPORTANT: Comply with all local and national laws, rules, and regulations associated with this equipment. Operators
should be aware of the regulations and standards in their industry / locality for the operation of the MVR-SC.

MVR-SC™ Refrigerant Leak Monitor
1100-2184 Rev 1 5
SECTION 2. PRODUCT DESCRIPTION
2.1 Product Overview
The MVR-SC Refrigerant Leak Monitor provides centralized control and alarming for multi-occupant applications utilizing a
network of up to one hundred MVR-300 Refrigerant Leak Detectors. The MVR-SC continuously monitors all connected
devices for alarm and fault conditions and will provide alerts via the integrated color touchscreen and built-in relays.
The MVR-300’s core functions include monitoring a network of connected MVR-300 refrigerant leak detectors for high or
low PPM alarm events, hardware faults, and network connectivity. When an alarm is present, the MVR-SC activates the
alarm relay, the Home Screen switches to red, and an audible buzzer is activated. Faults activate the fault relay, the
Home Screen switches to amber, and an audible buzzer is activated. Lastly, communication errors switch the Home
Screen to blue and provides an onscreen warning of the effected MVR-300 Refrigerant Leak Detectors.
2.2 Design Features
•At-a-glance visualization of whole system alarm, fault, or connectivity status
•Integrates the MVR-300; centralized control for multi-occupant applications utilizing the MVR-300 refrigerant
detector
•Continuously monitors all connected MVR-300 detectors for alarm and fault conditions, ensuring and warning in
case of any disconnect
•Displays real time data from all gas detectors in the system and offers simple configuration of controller
•Integrated audible buzzer
•Red/Yellow/Green encoding on touch screen for clear alerting
•1 Alarm Relay; 1 Fault Relay; Automatic system action to be taken for fault or alarm condition via built-in relays
•Relay outputs can trigger a horn/strobe that triggers during alarm and/or fault condition. NC and NO options
supported.
•Rolling event log of 100 most recent events; alarms, faults, connectivity, etc.} Saved to SD card for portable
export.
•Local alarm buzzer can be muted/acknowledged for 30 minutes with a single click. Remote location alarm will
continue to alert until problem is assessed and resolved.
•Maintenance mode inhibits for 30 minutes any relay activation and/or audible alarming for entire system.
•Low-voltage 24VDC solution allows for concern-free wiring of communication network
•Kitted 6-inch Modbus wire harness for faster installation of MVR-300
•Up to 100 devices connected into a single network, grouped into manageable blocks with up to 15 MVR-300
refrigerant detectors per gateway.
2.3 Bill of Materials
Included
Item
Part Number
MVR-SC Refrigerant Leak Monitor
1100-2155
Modbus EZ-Wire Kit
1100-2190
USB Drive w/ Floorplan Datasheet, MVC-SC Firmware
1100-2148
Recommended
Item
Part Number
Modbus Gateway
1100-2198
Ethernet Switch
1100-2198
Modbus Cable (1,000 FT)
1100-2193

MVR-SC™ Refrigerant Leak Monitor
6 1100-2184 Rev 1
2.4 Specifications
2.4.1 Hardware Specification
Housing
Fiberglass Reinforced Polyester, Wall Mount, Single-door
Dimensions
13.56 × 11.43 × 5.46 inches (344 × 291 × 139 mm)
Weight
7.8 lb. (3.54 kg)
Display Type
Color Touch Display, Resistive Analog, TFT
Mounting
Integral Mounting Flange
Latch Type
(2) quick-release latches, padlockable
Display Viewing Size
5 inch, 800 × 480 pixels
Audible Alarm
Integrated
Relay Outputs
2 (Fault, Alarm), 2.0 Amps switching current, max 250VAC / 30 VDC
Device Capacity
100 MVR-300 VRF refrigerant leak detectors
15 MVR-300 VRF refrigerant leak detectors / Gateway
7 Gateways / MVR-SC refrigerant leak monitor
Serial Port
1 × RS485 Modbus RTU Master (for direct addressing)
Memory Storage
microSD Card and USB 2.0, up to 32GB; Data Speed: up to 200Mbps
Internal Memory
RAM: 512MB; ROM: 3GB system memory; 1GB user memory
Backup Battery
CR2032 (Real-time Clock)
Operating Voltage
24V DC, 20.4VDC to 28.8VDC
Max. Current Consumption
0.44A @ 24VDC
Operating Temperature
-20º C to 55º C (-4º F to 131º F)
Storage Temperature
-30º C to 70º C (-22º F to 158º F)
Relative Humidity
5% to 95%
Enclosure Rating
IP20
Approvals
EN 61326-1:2013, RoHS Compliant, REACH Compliant
2.4.2 Network Specifications
Scan Time
15 seconds
Network Device Timeout 5 minutes
Ethernet Communication RJ45 port, 10/100 Ethernet: Modbus TCP Master
Modbus Network Addresses
Available Gateway IP Addresses: 192.168.0.1 - 192.168.0.10
Controller IP Address: 192.168.0.100
Subnet Mask: 255.255.255.0
Modbus RTU Parameters
Baud Rate: 9,600
Start Bits: 1
Data Bits: 8
Parity: None
Stop Bits: 1
Modbus ID’s
2 - 16
Device Capacity Modbus TCP : 100
Serial Port (RS485): 15

MVR-SC™ Refrigerant Leak Monitor
1100-2184 Rev 1 7
2.5 Components
#
Component Description
1
PLC / Touch Screen
2
USB Port
3 Ethernet Port
(Requires Shielded Cat 6 Cable)
4 Fault Relay
(250 VAC / 30 VDC, 2.0 AMP)
5 Alarm Relay
(250 VAC / 30 VDC, 2.0 AMP)
6 Modbus Terminal Block
(Requires Belden 3106 or Equivalent. Shielded 1.5 pair twisted)
7 Power
(24 VDC IN)
8 Cable Entries
(×4, Ø 0.87)

MVR-SC™ Refrigerant Leak Monitor
8 1100-2184 Rev 1
2.5.1 Network Components
MVR-SC Refrigerant Leak Monitor (6702-8010, included)
The MVR-SC Refrigerant Leak Monitor provides centralized
alarming and control for all connected MVR-300 Gas Detectors.
In combination with the other network components, the MVR-SC
becomes a hub of information tied to a refrigerant leak detection network.
MVR-300 VRF Refrigerant Leak Detector (6203-00XX)
The MVR-300 VRF Refrigerant Leak Detector (MVR-300) provides
refrigerant leak detection for occupied rooms in VRF applications.
See MVR-300 manual PN #6203-9000 for more details.
Ethernet Network Switch (1100-2172, MOXA EDS-208A)
An Ethernet network switch is used to provide connectivity between the
MVR-SC Controller and the individual Modbus Gateways (up to 8 ports).
Visit MOXA website (www.moxa.com) for more details.
Modbus Gateway (1100-2198, MOXA MGate MB3170)
A RS485 to Ethernet gateway is used to create small networks of MVR-
300 Refrigerant Detectors (up to 15 per gateway) to ease installation and
troubleshooting.
Visit MOXA website (www.moxa.com) for more details.
Modbus EZ-Wire Kit (1100-2190, included)
Precisely stripped, pre-bonded wire provides faster, more consistent
installation to the MVR-300 Modbus port.
The kit includes (3) 6” 0.5mm2(20 AWG) color coded (Blue, Orange,
White) wires and 2” of heat shrink.

MVR-SC™ Refrigerant Leak Monitor
1100-2184 Rev 1 9
SECTION 3. NETWORK OVERVIEW
IMPORTANT: Prior to installation, download the MVR-SC floorplan spreadsheet available on the USB stick
supplied with the controller and on the Bacharach website (https://bit.ly/3nZJTlL). This spreadsheet has editable
fields for Floor / Room and non-editable fields for Modbus ID and Gateway IP address. The floor and room fields
are to be completed prior to installation in order to ensure correct wiring and function.
Up to one hundred MVR-300 detectors can be connected to the MVR-SC. The detectors are grouped in Modbus RTU
daisy-chain segments of up to fifteen devices terminating at a gateway; up to seven gateways can be used in a fully
populated network.
Gateways are connected via an Ethernet TCP network through an Ethernet switch to the MVR-SC. The MVR-SC provides
centralized control of all devices in the network.
Fully Polluted Network
Alternatively, the MVR-SC can also utilize a network of daisy chained gateways to populate the network instead of using
an Ethernet switch as a go-between for the MVR-SC and the network’s gateways.
Daisy Chained Gateway Network
A small network of up to 15 MVR-300 detectors can be directly wired to the MVR-SC via the available Modbus Terminal
Block in the controller’s enclosure. Combination of direct wired and gateway wired MVR-300 detectors can be deployed in
a network.

MVR-SC™ Refrigerant Leak Monitor
10 1100-2184 Rev 1
When laying out your network based on the occupied space’s floorplan, follow these recommendations:
•Keep daisy-chain segments of MVR-300 detectors as near as possible to the gateway to which they connect.
•We recommend keeping the distance under 500 ft.(152 m) for Modbus daisy-chain segments and 328ft (100 m)
for Ethernet segments. As wire length increases, noise may be introduced into the system causing a
communications error. A greater degree of attention to shielding and grounding is required as wire length
increases.
•It is important that the designations in the floorplan spreadsheet match the physical network. Any changes in the
physical wiring must be reflected in the spreadsheet for the system to function properly.
Networking Notes:
•When designating multiple devices to the same floor, those devices must have the same floor name. The MVR-
SC will display a new floor for each unique name appearing in the floorplan spreadsheet, up to sixteen distinct
values.
•When identifying floors/rooms on your floorplan, limit the number of characters to any combination of up to six
letters or numbers.
•Each Gateway’s IP Address must be unique. If only one gateway is used, its IP address should be 192.168.0.1.
The IP address for subsequent gateways would be 192.168.0.2, 192.168.0.3, etc.
•The 7th gateway, if used, has a limit of ten devices. All other gateways have a limit of fifteen devices.
SECTION 4. INSTALLATION
4.1 Warnings & Cautions
WARNING: Electrical installation should be performed by a certified electrician, and should comply with all applicable NEC
/ CEC and local electrical safety codes.
CAUTION: Drilling holes in the MVR-SC Refrigerant Leak Monitor enclosure may damage the unit and will void the
warranty. Please use provided cable entries for electrical connections.
CAUTION: The MVR-SC Refrigerant Leak Monitor contains sensitive electronic components that can be easily damaged.
Be careful not to touch or disturb any of these components.
CAUTION: RS-485 cable must be insulated to the highest voltage level in the system.
IMPORTANT: Place the MVR-SC in an indoor setting free from the risk of exposure to water, high humidity or any
hazardous conditions.
IMPORTANT: Ensure that the MVR-SC’s touch screen is readily accessible for viewing alerts and responding to alarm
conditions.
4.2 Preliminary Inspection
The MVR-SC Refrigerant Leak Monitor has been thoroughly inspected and tested prior to shipment from the factory.
Nevertheless, it is recommended that the controller is 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 door. Visually inspect the interior of the
enclosure for loose wires or components that may have become dislodged during shipment. If damage is discovered,
please contact a qualified repair technician or the nearest Bacharach Service Center for assistance.
4.3 Suitable / Appropriate Locations
The MVR-SC Refrigerant Leak Monitor is design for use in a large refrigerant leak monitoring network in an occupied
space. The controller should be located where it is easily accessible for visual monitoring and servicing.
The controller must be installed indoors in a clean, dry area that is not subject to temperature or humidity extremes. The
location should be a low traffic area where unauthorized access is prohibited.