Bacharach MVR-300 User manual

1: OVERVIEW
The Bacharach MVR-300 detects refrigerant leaks in occupied
spaces.
3: SAFETY INSTRUCTIONS
CODE COMPLIANCE: Comply with all local and naonal
laws, rules and regulaons associated with this equipment.
TECHNICIAN USE ONLY: This unit must be installed by a
suitably qualified technician who will install this unit in
accordance with these instrucons and the standards in his
parcular industry/country. Operators of the unit should be
aware of the regulaons and standards in their indus-
try/country for the operaon of this unit. These notes are
only intended as a guide and the manufacturer bears no
responsibility for the installaon or operaon of this unit.
Failure to install and operate the unit in accordance with
these instrucons and with industry guidelines may cause
serious injury including death and the manufacturer will not
be held responsible in this regard.
SAFE MOUNTING: This detector must be connected by a
marked, suitably located and easily reached switch or
circuit-breaker as means of disconnecon.
CAUTION: DO NOT MOUNT the MVR-300 in an
area that may contain flammable liquids or
vapors. Operaon of electrical equipment in
such an area constutes a safety hazard.
CAUTION: The use of MVR-300 in ceiling voids
in a hotel room would not strictly comply with
EN378.
IMPORTANT: Mount in-room sensors at less
than the normal heights of the occupants. E.g.,
in a hotel room this is less than bed height
(between 100 and 150 mm [4 and 6 inches] off
the floor). Avoid dras and heat sources (like
radiators), and avoid sources of steam.
P/N: 6203-9001
Revision 1
August 2016
INSTALLATION GUIDE
Magnec
Wand
Grill Decorave
Bezel
Tri-color
Status LED
Magnec
Switch B (••)
MVR-300 Proper vs. Improper Placement Locaons
AIR CONDITIONER
6: INSTALLATION
REFRIGERANT
GAS DETECTOR
Magnec
Switch A (•)
For more detailed informaon, scan
here or visit www.MyBacharach.com to
access the MVR-300 User Manual (P/N
6203-9000).
Coin Slot
for Bezel
Release
CAUTION: Ensure all wiring
connecons are made before
applying power.
ENVIRONMENTAL CONSIDERATIONS: Carefully
consider the full range of environmental condions
to which the instruments will be exposed.
TARGET GAS CONSIDERATIONS: The physical data of
the gas or vapor to be detected must be observed.
APPLICATION CONSIDERATIONS: The specifics of the
applicaon (for example, possible leaks, air move-
ment/dra, etc.) must be observed.
ACCESSIBILITY CONSIDERATIONS: The degree of
accessibility required for maintenance purposes
must be granted.
ELECTRONIC CONSIDERATIONS: The system contains
sensive electronic components that can be easily
damaged. Do not touch nor disturb any of these
components.
2: MOUNTING CONSIDERATIONS
Mount the MVR-300 according to the above consideraons,
product dimensions, and maximum wiring lengths.
4: SPECIFICATIONS
Size (HxWxD): 150 x 105 x 45 mm including bezel
(6.0” x 4.1” x 1.75”)
Depth of bezel: 10 mm (0.39 “)
Weight: 230 grams (8 ounces)
Indicators: Mul-color status LED
Internal alarm buzzer; 85 dB @ 30 cm (12’)
Alarm Delay: Selectable (0, 5, 10, 15 minutes)
Inputs: Magnec switches (2)
Power terminal block
Configuraon DIP switch block
Gas sensor (refrigerant)
Outputs: Relay outputs (2)
2 SPDT, 1 A at 30 VDC,
1 A at 125 and 240 VAC, resisve load
Modbus: Connecon: RS-485 terminal block
Baud rate: 9600 or 19200 (selectable)
Default baud: 9600
Start bits: 1
Data bits: 8
Parity: None (default), odd, even (selectable)
Stop bits: 1 (default) or 2 (selectable)
Retry me: 500 ms (min) between retries
End of msg: Silent 3.5 characters
Power: 100 to 230 VAC, 50/60 Hz, 4 W
Wiring Power: 3-core cable, 14 to 20 AWG (0.5 to 2.0 mm2)
Wiring Relays: 3-core cable, 18 to 20 AWG (0.5 to 1.0 mm2)
Wiring Modbus: 2-core twisted pair shielded cable
18 to 24 AWG (0.2 to 1 mm2) with 120 Ω
characterisc impedance
Enclosure: Material: ABS; Protecon: IP41, NEMA 1
Temperature: Operaon: 32 to 120�F (0 to 50�C)
Storage: - 5 to 100�F (- 20 to 40�C)
Humidity: 5 to 90 %RH, non-condensing
Pressure: 23.6 to 32.5 in. of Hg (800 to 1100 hPa)
Elevaon: 0 to 6,560 . (2000 m) altude
Gas Detecon: R-22, R-32, R-134a, R-404a, R-407c, R-410a
Detect Range: 0 to 2,500, 5,000, 10,000 ppm
Sensor Life: 5 to 8 years (typical)
NOTE: The MVR-300 is designed for use in 2-gang
wall boxes with a minimum depth of 50 mm (2”).
Low
Gas
Alarm
High Gas
Alarm
or Fault
The detector can be calibrated and maintained non-intrusively
using a magnec wand.
The detector is for indoor applicaons. It is housed in an ABS
enclosure that fits into most 2-gang electrical back boxes (not
included).
5: CONFIGURATION
1 Restart
On = Restart MVR-300
Off = Normal Operaon
(Default)
2,3 Alarm ON Delay
Off, Off = No delay (Default)
Off, On = 5 minute delay
On, Off = 10 minute delay
On, On = 15 minute delay
4 Failsafe Relay Selecon
On = Failsafe Relay Operaon
Off = Normal Relay Operaon
(Default)
8 = Reserved
When inserng the wire into the terminal,
release the spring clamp by pushing back
the release latch.
Push to release
1234
ON
5678
Gas alarms and status messages are indicated visually by a
3-colored LED and audibly by a buzzer. In case of an alarm
and/or fault, relays switch (for example, shut-off valves or alarm
devices).
Power
Relay #2
NC NOCOM
Relay #1
NC NOCOM
Modbus
AGB
5 Relay 2 Fault Indicaon
On = High Alarm Only
Off = High Alarm or Fault
(Default)
6 Alarm Latching
On = Alarms latch and
require manual reset
Off = Alarms automacally
reset (Default)
7 Buzzer Disable
On = Buzzer disabled
Off = Buzzer enabled
(Default)
NOTE: Before installing the MVR-300, refer to the
calibraon gas concentraon label and record the
value for use in step 15 of the calibraon procedure.
MVR-300 is a trademark of Bacharach, Inc. All rights reserved.

(
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World Headquarters
621 Hunt Valley Circle
New Kensington, PA 15068 USA
Phone: [phone] • Fax: [phone]
Toll Free: 1-800-736-4666
114A Georges Street Lower
Dun Laoghaire • Co Dublin • Ireland
Phone: [phone]
Fax: [phone]
8A. ZERO ADJUSTMENT
MVR-300
Base
Installed
in Double
Gang Box
Cover
in Place
Bezel
in Place
7: OPERATION OVERVIEW
LED Operaon
SHIELD WIRE WARNING: Connect the shield of
Modbus wires to the earth ground of the central
control system (e.g., chassis, ground bus bar, etc.).
Normal mode,
no alarm
Low gas alarm
High gas alarm
Fault
Under range
(perform
zero adjust)
Over range
(remove gas)
Offline (not in
calibraon
mode)
Normal/Alarm/Fault/
Special States
Waing to start
calibraon mode
During calibraon
Zero calibraon
error
Zero Cal Mode
Waing to start
calibraon mode
During calibraon
Span calibraon
error
Span Cal Mode
Magnec Switch Funcons
5 s
Begin zero
calibraon
5 s
Begin span
calibraon
5 s
5 s
5 s
5 s
Latched
alarm
Latched
alarm
60 min
60 min
60 min
Clears one or
both latched
alarms
Buzzer Operaon
No alarm Low gas alarm
Muted alarm High gas alarm
Fault (connuous)
Website: www.MyBacharach.com ● E-mail: [email protected]
8: GENERAL CALIBRATION PROCEDURE
1. The detector must not be in alarm or fault condion.
2. Calibraon gas must be in balance of air, not Nitrogen (N2).
3. Aach the pressure regulator to the calibraon gas cylinder.
4. Fit calibraon adapter to the cover plate.
5. The gas flow should be approximately 0.3 to 1.0 L/min.
6. If operaon is intended to be at higher altudes, the factory calibraon
will result in a reading lower than the reading at sea level (reduced paral
pressure). A new span adjustment is recommended if the altude or the
ambient pressure is changed. The factory calibraon is set to sea level.
7. Connect the tubing to the barbed fing.
8B. SPAN ADJUSTMENT
WARNING: Ambient air can be used to zero the
sensor instead of synthec air only if the area is
known to be free of the target gas or any gas to which
the sensor may be cross-sensive. In this case, no
cylinder or calibraon adapter is needed for the zero
adjustment.
8. Tap and hold ( • ) for >5 seconds. The LED will blink
green-green-red when the detector is ready.
9. Apply synthec air (or use ambient air per warning above).
10. Tap ( • ) within 30 seconds to confirm start of calibraon.
Otherwise the detector will me-out and return to normal
operaon.
11. As the process progresses, the LED will blink green-red,
green-red-red, green-red-red-red, etc.
• To abort calibraon, tap and hold ( • ) for >5 seconds,
turn off gas flow and remove the calibraon adapter.
The detector will return to normal operaon.
• If calibraon is successful (green LED), skip to step 12.
• If calibraon is unsuccessful (orange LED blinks @ 2 Hz),
then tap ( • ) to discard the calibraon aempt, and see
User Manual (P/N 6203-9000) for troubleshoong.
12. Turn off gas flow from synthec air.
13. Replace synthec air tank with calibraon gas tank in
preparaon for span adjustment.
9. BUMP TEST
Capve
Screw
Copyright © 2016 Bacharach, Inc. All Rights Reserved
Remove bezel by inserng a coin into the side slot. Remove the
cover plate by loosening the capve set screw.
CALIBRATION GAS
Flow Meter
Pressure
Regulator
Tubing
Calibraon
Adapter
Negave gas
fault (perform
zero adjust)
Test Point
Access Replaceable Sensor
Alignment
Ribs (x3)
Recovery from
span calibraon
2.0 = 2.0 Hz 2 cycles/second FAST flash/chirp
0.5 = 0.5 Hz 0.5 cycles/second SLOW flash/chirp LED Color
6: INSTALLATION (CONTINUED)
Coin Slot for Removing Bezel
Warmup mode
(≈ 6 minutes)
14. Tap and hold ( •• ) for >5 seconds. The LED will blink
green-green-orange when the detector is ready.
15. Apply span gas in the concentration listed on the cal gas
concentration label (beneath the detector’s cover plate).
This may require the temporary removal of the bezel and
cover plate to see the label.
16. Tap ( •• ) within 30 seconds to confirm initiation of
the calibration. Otherwise the detector will time-out and
return to normal operation.
17. As the calibration process progresses, the LED will blink
green-orange, green-orange-orange,
green-orange-orange-orange, etc.
• To abort calibration, tap and hold ( •• ) for >5 seconds,
turn off gas flow and remove the calibraon adapter.
The detector will return to normal operaon.
• If calibraon is successful, the LED will blink
green-orange-red indicating ‘offline’). Turn off gas flow
and remove the calibraon adapter. After 6 minutes
the detector will return to normal operation.
• If calibraon is unsuccessful (orange LED blinks @ 2 Hz),
then tap ( •• ) to discard the calibraon aempt, and
see User Manual (P/N 6203-9000) for troubleshoong.
Turn off gas flow and remove the calibraon adapter.
After 6 minutes the detector will return to normal
operation.
1. Inform building personnel of test so that certain alarms
may be inhibited (e.g., shutdown valves, notification of
authorities, etc.).
2. Connect adapter and target gas according to instructions in
General Calibration Procedure.
3. Apply a sufficiently high concentration of target gas to
trigger alarms, but not pure refrigerant or hydrocarbons
(e.g., do not use a butane lighter).
4. Once the alarm thresholds are exceeded, all designated
gas alarm relays will be activated and the digital outputs
will transmit the corresponding gas concentrations.
5. Turn off gas flow and remove calibration adapter.
1100-xxxx R410A ####ppm
YYMM#### Cal Gas ####ppm
Direcon
Arrows (x2)
for Proper
Mounng
Part Number
Serial Number
Max Range
Calibraon Gas
Concentraon
Sensor Type