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MVR-300™ Refrigerant Gas Detector

P/N: 6203-9000 Version 1

Environmental Specifications .................................................................................................. 35

8.7

Sensor Specifications .............................................................................................................. 35

8.8

Default Alarm Levels ............................................................................................................... 35

8.9

Modbus Registers .................................................................................................................... 36

8.9.1

Read Device Identification .......................................................................................... 36

8.9.2

Analog Input Registers ............................................................................................... 36

8.9.3

Analog Output Registers ............................................................................................ 38

8.9.4

Input Status Flags ....................................................................................................... 39

8.9.5

Output Status Flags .................................................................................................... 40

SECTION 9.

ORDERING INFORMATION .......................................................................................... 42

9.1

MVR-300 Refrigerant Leak Detector Configurations ............................................................... 42

9.2

MVR-300 Refrigerant Leak Detector Configurations (UK Version) ......................................... 42

9.3

Accessories ............................................................................................................................. 43

SECTION 10.

CUSTOM UK BACK BOXES AND FACEPLATES ....................................................... 44

10.1

Introduction to UK Version ....................................................................................................... 44

10.2

Hardware Overview – UK Version ........................................................................................... 44

10.3

Using Optional Metal Tabs ...................................................................................................... 45

10.4

Electrical Installation – UK Version ......................................................................................... 45

10.5

Customizing Face Plates ......................................................................................................... 46

10.6

Calibration ................................................................................................................................ 47

SECTION 11.

DECLARATION OF CONFORMITY ............................................................................... 49

www.

.com

[email protected]

1.800.561.8187

Summary of Contents for MVR-300

Page 1: ...s Detector for Occupied Spaces User Manual Installation Operation Configuration Troubleshooting P N 6203 9000 August 2016 Version 1 Product Leadership Training Service Reliability www com information...

Page 2: ...mation contained herein is based on data considered accurate However no warranty is expressed or implied regarding the accuracy of this data All goods must be shipped to the manufacturer by prepaid fr...

Page 3: ...her Switch Configurations 21 4 3 1 Reset Cycle Power Switch 1 21 4 3 2 Reset to Factory Default Values Switch 8 21 4 4 Operation of Magnetic Switches Buzzer and LED 22 SECTION 5 MAINTENANCE 23 5 1 Mai...

Page 4: ...us Flags 40 SECTION 9 ORDERING INFORMATION 42 9 1 MVR 300 Refrigerant Leak Detector Configurations 42 9 2 MVR 300 Refrigerant Leak Detector Configurations UK Version 42 9 3 Accessories 43 SECTION 10 C...

Page 5: ...ses specified in this document and under the conditions listed Ensure that product documentation is retained made available and appropriately used by anyone operating the product Comply with all local...

Page 6: ...cated and easily reached switch or circuit breaker as means of disconnection NOTICE If replacement of either main power fuse is required use only a TR5 Radial 3 15A 250V slow fuse Littlefuse 372 1315...

Page 7: ...d visually by a 3 colored LED and audibly by a buzzer In case of an alarm and or fault relays switch for example to shut off valves or to activate alarm devices 2 2 Intended Use Checks ambient air of...

Page 8: ...MVR 300 Refrigerant Gas Detector 8 P N 6203 9000 Version 1 2 4 Components Overview Figure 2 MVR 300 Components Front www com information itm com 1 800 561 8187...

Page 9: ...unting slots x6 11 Test point access holes x2 12 Sensor alignment ribs x3 13 Replaceable sensor module 14 Direction arrows x2 for proper mounting 15 Hinges for cover plate 16 Hinges for bezel 17 Snap...

Page 10: ...The types of optional equipment and accessories that will be used with the system Any limiting factors or regulations that would affect system performance or installations Wiring details including th...

Page 11: ...efrigerant Gas Detector P N 6203 9000 Version 1 11 Figure 5 Typical MVR 300 Installation in an Occupied Space Application Figure 6 Recommended Installation Locations www com information itm com 1 800...

Page 12: ...on Modbus communications registers refer to Section 8 9 Modbus Registers on page 36 NOTICE By default switch configurations supersede Modbus configurations Use Modbus register 2007 Modbus Precedence o...

Page 13: ...lsafe Relay Operation 5 Relay 2 Fault Indication Off High Alarm or Fault default On High Alarm Only 6 Alarm Latching Off Alarms automatically reset default On Alarms latch and require manual reset 7 B...

Page 14: ...CAUTION RS 485 signal cable must be insulated to the highest voltage level in the system Protect the RS 485 signal cable by using the supplied installation kit CAUTION Wiring must be in compliance wi...

Page 15: ...reference Label Description Figure 10 Modbus Wiring Terminals A RS 485 A non inverted B RS 485 B inverted G RS 485 shield Prepare signal cable and put boot over the signal cable Add ferules if require...

Page 16: ...lace detector into electrical back box not included and secure through the appropriate mounting slots Figure 12 Secure the MVR 300 and Wiring into the Back Box 8 Put cover plate back into hinge and ti...

Page 17: ...h the switches or the Modbus interface 4 2 1 Default Alarm Function If the refrigerant concentration raises above the alarm 1 set point The LED flashes red with 0 5 Hz The buzzer beeps at 0 5 Hz The a...

Page 18: ...ing the presence of refrigerant for a certain amount of time the triggering of the alarm can be delayed for a short period of time Unless the alarm condition is present for at least the delay time the...

Page 19: ...Refrigerant Gas Detector P N 6203 9000 Version 1 19 Figure 17 Alarm ON Delay A Shorter Delay Time Is Disregarded Figure 18 Alarm ON Delay for Multiple Alarm Levels www com information itm com 1 800 5...

Page 20: ...elay and Modbus flag will not change state until the concentration is below the alarm level and it is acknowledged The acknowledgement can either happen by tapping and holding the magnetic wand for 5...

Page 21: ...e Modbus registers to their factory default values Step Description 1 Ensure that the detector is off If the detector is on turn off power 2 Set switch 8 to ON 3 Turn on the detector The buzzer will b...

Page 22: ...es Buzzer and LED NOTICE If the drill pattern of the customized metal faceplate for the UK version of the MVR 300 does not accommodate the two magnetic switch locations the faceplate must be removed t...

Page 23: ...te Safety Data Sheets Calibration gas should be vented into a fume hood or to the outside of the building WARNING Zero First Then Span For proper operation never adjust the span before completing a ze...

Page 24: ...ration adapter 6 Verify that gas flow is approximately 0 3 to 1 0 L min 7 If operation is intended to be at higher altitudes the factory calibration will result in a reading lower than the reading at...

Page 25: ...tic air 14 Replace synthetic air tank with calibration gas tank in preparation for span adjustment 5 2 4 Span Adjustment Step Description Continued from Zero Adjustment 15 Tap and hold for 5 seconds T...

Page 26: ...ve bezel and face plate 2 Attach calibration adapter 3 Configure voltmeter to measure 0 to 5 VDC 4 Insert voltmeter probes into the marked test points 5 Tap and hold for more than 5 seconds 6 The LED...

Page 27: ...tes typical Item Description 1 Magnetic switch position 1 2 Magnetic switch position 2 3 Multi color status LED 4 0 5 V test point access hole 5 0 5 V test point access hole 6 Calibration adapter Figu...

Page 28: ...080 Invalid calibration Error in calibration configuration Critical fault 2 Load valid calibration Read from external EEPROM 0x0100 Zero calibration failure Zero calibration failed Calibra tion failur...

Page 29: ...celed and the detector returns to normal operation 2 If the detector is set to latching tap and hold to acknowledge the latch mode or set the Modbus flag 5 3 6 Negative Gas Fault Orange LED blinks at...

Page 30: ...el and cover plate 3 Pull out sensor module It is recommended to use extractor tool part number 1100 2022 4 Plug new sensor module into sensor control PCB Ensure that the three notches of the sensor m...

Page 31: ...vary 4 Recesses x2 for extracting sensor 5 Alignment notches x3 on sensor module Figure 23 Sensor Replacement Showing Sensor Extractor Tool 5 5 Cleaning the Detector Clean the detector with a soft clo...

Page 32: ...cal conductivity greatly increases as soon as a diffusion process allows the refrigerant molecules to come in contact with the sensor surface Water vapor high ambient humidity temperature fluctuations...

Page 33: ...nd in national laws have been effective since August 2012 and apply to this device Common household appliances can be disposed of using special collecting and recycling facilities However this device...

Page 34: ...ent 3 5 characters 1 Default Values 8 3 Power Supply and Relay Specifications Specification Description Operating Voltage 100 to 240 VAC 50 60 Hz Operating Power 4 W max Power Monitoring Green LED Rel...

Page 35: ...erature 32 to 122 F 0 to 50 C Storage Temperature 40 to 122 F 40 to 50 C Humidity 5 to 90 RH non condensing Pressure 23 6 to 32 5 in of Hg 800 to 1100 hPa Elevation 0 to 6 560 ft 2000 m altitude 8 7 S...

Page 36: ...x 0 1001 16 bit Last Fault Code All faults which have occurred since startup or fault register reset Hex 0 1002 Gas Concentration PPM Current gas concentration in PPM Unsigned Integer 1003 Gas Concent...

Page 37: ...1 2 Text string indicating the sensor serial number e g S7654321 ASCII 1030 Sensor Module SID Char 3 4 ASCII 1031 Sensor Module SID Char 5 6 ASCII 1032 Sensor Module SID Char 7 8 ASCII 1036 Signed Ra...

Page 38: ...Rate 0 9600 Baud 1 19200 Baud Unsigned integer 0 9600 baud R W 2003 Stop Bits Number of stop bits Unsigned integer 1 R W 2004 Parity Parity 0 none 1 odd 2 even Unsigned integer None R W 2005 Gas Low...

Page 39: ...locked 8 9 4 Input Status Flags Input status flags are readable using function code 02 Reg Addr Name Description Data Type Def Val 3000 Gas Low Alarm Flag 0 No low alarm state 1 Low alarm active or l...

Page 40: ...e and the detector will return to normal operation Boolean 0 R W if un locked 4003 Start Span Calibration Procedure Setting this flag places the detector offline and triggers the automatic span calibr...

Page 41: ...nual override mode setting this flag energizes relay 2 clearing this flag de energizes relay 2 Relay failsafe configuration has no effect on this test Boolean 0 R W if un locked 4016 Buzzer Test Mode...

Page 42: ...2 0 to 5000 ppm 6203 0023 0 to 10000 ppm 6203 0041 0 to 2500 ppm R 32 6203 0042 0 to 5000 ppm 6203 0043 0 to 10000 ppm 9 2 MVR 300 Refrigerant Leak Detector Configurations UK Version P N Detection Ran...

Page 43: ...ht Pipe 1100 2038 Standard Installation Kit Standard Version 1100 2036 includes o Rubber Boot 1100 2025 o Heat Shrink Tubing 1100 2028 1100 2044 MVR 300 UK Version Replacement Plastics Kit includes To...

Page 44: ...ve UK Back Box 10 2 Hardware Overview UK Version Most UK back boxes have mounting tabs of two different heights The UK version of the MVR 300 accommodates both through the use of thicker molded plasti...

Page 45: ...e the plastic tabs as is 2 Carefully remove plastic tabs from the base plate using nippers wire snips or similar Figure 26 Examples of Tool Needed to Remove Plastic Tabs CAUTION DO NOT attempt to snap...

Page 46: ...ent the need to remove the faceplate for local programming and operation of the MVR 300 but are not required NOTICE If the drill pattern of the customized metal faceplate does not accommodate the two...

Page 47: ...nment ribs as the adapter is fitted down onto the Sensor Module Figure 30 UK Version Calibration Adapter with Tubing Figure 31 MVR 300 UK Calibration Components Item Description of MVR 300 UK Calibrat...

Page 48: ...sion Bottom Calibration Adapters with Tubing NOTICE Aside from the calibration adapter itself and the fitting of the adapter to the MVR 300 the actual zero and span calibration process is the same for...

Page 49: ...r P N 6203 9000 Version 1 49 SECTION 11 DECLARATION OF CONFORMITY The technical documentation file required by this directive is maintained at the headquarters of Murco a Bacharach Company www com inf...

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