MZ-RD Remote Display 3015-5157
MZ-RD
Remote Display
Instruction 3015-5157
Installation / Operation / Maintenance
Rev. 4 – February 2011
UL 61010-1
CAN/CSA 22.2 No.61010.1
Product Leadership • Training • Service • Reliability
MZ-RD – Multi-Zone Remote Display
WARRANTY
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 two (2) years 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 warranty set forth in Paragraph 1 does not apply to parts the Operating Instructions designate as having a limited
shelf-life or as being expended in normal use (e.g., filters).
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
Declaration of Conformity
Manufacturer’s name:
Bacharach, Inc.
Manufacturer’s address:
621 Hunt Valley Circle, New Kensington, PA 15068
Product Name:
MZ-RD (Multi-Zone Remote Display)
CE Mark:
European EMC Directive 2004/108/EC, and test specification EN 61326-1:2006
Low Voltage Directive 2006/95/EC, Safety Requirements EN 61010-1:2001
This design meets requirements for certification to UL 61010-1 and
CAN/CSA-C22.2 No. 61010-1
Notice:
Product improvements and enhancements are continuous; therefore the specifications and information contained in
this document may change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in
connection with the furnishing, performance, or use of this material.
No part of this document may be photocopied, reproduced, or translated to another language without the prior written
consent of Bacharach, Inc.
Copyright © 2000–2011, 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 owners.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Table of Contents
1 Introduction .............................................................................................................................................. 1
How to Use This Manual ........................................................................................................................... 1
Warnings and Cautions ............................................................................................................................. 1
Hazard Symbols on the Monitor ............................................................................................................ 1
Safety Precautions .................................................................................................................................... 2
Protective Grounding ............................................................................................................................. 2
Explosive Atmosphere ........................................................................................................................... 2
Accessing the Interior of the Remote Display........................................................................................ 2
Misuse and Modifications to the Remote Display.................................................................................. 2
In Case of Malfunction ........................................................................................................................... 2
Altitude Limit .......................................................................................................................................... 2
Cleaning................................................................................................................................................. 2
Functional Overview .................................................................................................................................. 2
Communication Options ........................................................................................................................ 2
2 Installation ............................................................................................................................................... 3
Installation Considerations ........................................................................................................................ 3
Warnings and Cautions ........................................................................................................................ 3
Inspection............................................................................................................................................... 3
Location of the Remote Display............................................................................................................. 3
Mounting Instructions ................................................................................................................................ 4
Interior Schematic...................................................................................................................................... 5
Electrical Wiring......................................................................................................................................... 6
Communication Connections .................................................................................................................... 7
MZ-RD Network ..................................................................................................................................... 7
Integration with Building Management System ..................................................................................... 7
Connecting External Alarms...................................................................................................................... 8
Overview ................................................................................................................................................ 8
Connection............................................................................................................................................. 8
3 Overview ................................................................................................................................................... 9
Remote Display Module Overview......................................................................................................... 9
System Programming .............................................................................................................................. 10
Setup Parameters ................................................................................................................................ 10
Password Protection............................................................................................................................ 10
Setup Programming................................................................................................................................. 11
Setting the Clock.................................................................................................................................. 11
Navigating to the 1st MZ-RD Setup Screen ......................................................................................... 11
Num Monitors on Net........................................................................................................................... 12
Monitor Baud........................................................................................................................................ 12
Audible Alarm....................................................................................................................................... 12
BMS ..................................................................................................................................................... 12
BMS Baud Rate ................................................................................................................................... 12
Password ............................................................................................................................................. 12
Navigating to the 2nd MZ-RD Setup Screen......................................................................................... 13
Setting Relay Parameters.................................................................................................................... 13
Node Address ...................................................................................................................................... 13
Navigating to the 1st and then 2nd Monitor Setup Screen .................................................................... 14
Navigating to the 3rd Monitor Setup Screen......................................................................................... 15
Zone Setup Programming ....................................................................................................................... 16
Navigating to the 1st Zone Setup Screen............................................................................................. 16
Navigating to the 2nd Zone Setup Screen ............................................................................................ 17
Navigating to the Trend Screen ........................................................................................................... 18
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MZ-RD – Multi-Zone Remote Display
4 General Operation................................................................................................................................. 19
Functional Overview ............................................................................................................................ 19
The Zone Screen ................................................................................................................................. 19
Alarm Conditions.................................................................................................................................. 20
Fault Conditions ................................................................................................................................... 20
The System Screen ............................................................................................................................. 21
Alarm Conditions.................................................................................................................................. 21
Alarm Log............................................................................................................................................. 22
Fault Conditions ................................................................................................................................... 23
Alarms ..................................................................................................................................................... 24
Functional Overview ............................................................................................................................ 24
Responding to Alarms ......................................................................................................................... 24
Alarm Detail Screen ............................................................................................................................. 25
Acknowledging Alarms ........................................................................................................................ 26
The Trend Screen.................................................................................................................................... 27
Overview - Log Interval........................................................................................................................ 27
Navigating to the Trend Screen ........................................................................................................... 27
System Faults.......................................................................................................................................... 28
Functional Overview ............................................................................................................................ 28
Navigating to the Fault Screen ............................................................................................................ 28
CRITICAL FAULTS.............................................................................................................................. 28
NON CRITICAL FAULTS..................................................................................................................... 29
Reset to Factory Default Settings ........................................................................................................ 29
Clearing System Faults........................................................................................................................ 30
Viewing Fault Log ................................................................................................................................ 30
The Calibration Screen............................................................................................................................ 31
Overview .............................................................................................................................................. 31
Navigating to the Calibration Screen ................................................................................................... 31
Adjusting Calibration Factor................................................................................................................. 31
Overview .............................................................................................................................................. 32
Navigating to the Diagnostic Screen.................................................................................................... 32
Diagnostic Screen Overview................................................................................................................ 33
Service Mode........................................................................................................................................... 34
Appendix .................................................................................................................................................... 35
Logic Diagram ......................................................................................................................................... 35
Specifications............................................................................................................................................ 36
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
1 Introduction
How to Use This Manual
Thank you for investing in a Bacharach MZ-RD Remote Display.
To assure operator safety and the proper use of the MZ-RD please read, understand, and follow the
contents of this manual, which provides important information on the installation, operation, and
maintenance of the monitor.
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, you can educate yourself about the principles of refrigerant
gas detection and the proper operation of this device by reading this manual thoroughly.
This manual provides important information on how to install, operate, and service the Remote Display.
Warnings and Cautions
When used in this manual or as labeled on the MZ-RD, the following hazard symbols and/or associated
words are defined as follows:
Hazard Symbols on the Monitor
WARNING: This symbol and/or the use of the word WARNING indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to,
could result in death or serious injury.
WARNING: This symbol and/or the use of the word WARNING indicates a potential hazard
from electrical shock. It calls attention to a procedure, practice, condition, or
the like, which if not correctly performed or adhered to, could result in death or
serious injury.
CAUTION: This symbol and/or the use of the word CAUTION indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to,
could result in minor or moderate injury.
IMPORTANT: The use of the word IMPORTANT in this manual calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to,
could result in incorrect performance of or damage to the equipment and may
void the warranty.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Safety Precautions
Protective Grounding
Under no circumstances should the MZ-RD 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.
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.
Accessing the Interior of the Remote Display
Extreme care should be exercised when accessing the interior of the remote display. Only qualified
electrical maintenance personnel should perform connections and adjustments. Always remove AC
power before working inside the remote display’s enclosure.
Misuse and Modifications to the Remote Display
The protection provided by the remote display may be impaired if the remote display is used in a
manner not specified by Bacharach, Inc. Modifications to this remote display, not expressly
approved, will void the warranty.
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 Bacharach Service Center. Use ONLY the provided knockouts for electrical and
communication wiring. Drilling into the box will void the warranty.
Altitude Limit
6,562 ft (2,000 m)
Cleaning
To clean the outside of the case use a DRY CLOTH. DO NOT use soap and water.
Functional Overview
Communication Options
The MZ-RD features full two-way communications via an RS-485 interface. MODBUS RTU is the
communication protocol standard. The instrument (P/N 3015-5138) can be connected to a Building
Management System or it may be operated as a stand-alone system with Bacharach’s gas monitors.
Please refer to the Appendix for a more complete discussion of communication protocols.
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MZ-RD – Multi-Zone Remote Display
2
Installation
Installation Considerations
Warnings and Cautions
WARNING: Electrical installation should be performed by a certified electrician, and
should comply with all applicable NEC/CEC and local electrical safety codes.
WARNING: The AC power ground wire must first be connected to the monitor’s
ground stud. Under no circumstances should this monitor be operated without 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.
WARNING: Explosion hazard! Do not mount the MZ-RD in an area that may contain
flammable liquids, vapors or aerosols. Operation of any electrical equipment in such
an environment constitutes a safety hazard.
WARNING: Shock hazard! Always disconnect AC power before working inside
the monitor.
CAUTION: Drilling holes in the MZ-RD enclosure may damage the unit and will void
the warranty. Please use provided knockouts for electrical connections.
CAUTION: The MZ-RD contains sensitive electronic components that can be easily
damaged. Be careful not to touch or disturb any of these components.
Inspection
The MZ-RD has been thoroughly inspected and tested prior to shipment from the factory. Nevertheless, it is
recommended that the instrument be re-checked prior to installation. Inspect the outside of the enclosure to
make sure there are no obvious signs of shipping damage. Loosen the four screws on the sides of the
enclosure and remove the front panel. Visually inspect the interior of the display for loose components that
may have become dislodged during shipment. If damage is discovered, please contact the nearest
Bacharach Service Center for assistance.
Location of the Remote Display
The MZ-RD should be centrally located in the facility (preferably outside of the mechanical room) and should
be easily accessible for visual monitoring and servicing. This is the “split architecture design” for safety of
the operator.
Dirt, grease, and oils can adversely affect the operation of the MZ-RD. The MZ-RD should be installed out
of direct sunlight in a clean, dry area that is not subject to temperature or humidity extremes. Installation 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.
The MZ-RD can be located up to 4500 feet from the furthest gas monitor. The MZ-RD is the main machine
interface by which you can program the gas monitor, acknowledge alarms, and observe conditions inside
the mechanical room. Note that there are two additional alarm relay contacts in the MZ-RD that can be
programmed to alarm with “leak, spill, evacuate, fault or monitor on”.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Mounting Instructions
The MZ-RD should be installed plumb and level and securely fastened to a rigid mounting surface.
The enclosure utilizes keyhole mounting brackets designed for ¼ inch fasteners. Locate the four screws as
shown in the diagram below or by using the provided mounting template. Allow the screw heads to protrude
approximately 1/4".
MZ-RD Mounting Specs
Hold the unit 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 unit securely against the
mounting surface.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Interior Schematic
Microcontroller
Board
CPU Reset
Switch
Main Board
TO HOST
RS-485 to
Building
Management
System
Ground
Instruction 3015-5157
AC IN
Connector
T5
Relay
Connectors
(1 & 2)
TO MONITORS
RS-485 to Gas
Monitors
5
MZ-RD – Multi-Zone Remote Display
Electrical Wiring
Locate a convenient service knockout and install electrical conduit in the typical manner.
Locate the AC Input Terminals and Ground Stud on the inside of the unit (page 6). Secure the incoming AC
power neutral (white/blue) and live (black/brown) wires to the LINE 1 and LINE 2 terminals.
Using the supplied crimp-on ring terminals, washers, and nuts, connect the incoming AC power ground wire
(green w/ yellow stripe) to the unit’s AC Input Ground Stud, and then install a separate wire between the
ground stud and the GND terminal.
WARNING: Electrical installation should be performed by a certified electrician, and
should comply with all applicable NEC/CEC and local electrical safety codes.
WARNING: Copper conductors for connection to supply mains must be made in
accordance with NEC/CEC and local codes.
WARNING: The AC power ground wire must first be connected to the unit’s ground
stud. Under no circumstances should this monitor be operated without 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.
CAUTION: Drilling holes in the MZ-RD enclosure may damage the unit and will
void the warranty. Please use knockouts provided for electrical connections.
A switch or circuit breaker rated 1.0 A, 250 VAC must be attached to the unit’s AC power leads. This
switch must also be located in close proximity to the monitor, and be in easy reach of the operator. This
switch should also be clearly marked as the monitor’s main AC disconnect device.
MZ-RD AC Input Power and Ground Connections
GROUND WIRE
TO ENCLOSURE DOOR
GREEN
Use supplied crimp-on
ring terminal, washers,
and nuts to connect AC
input ground wire to
Ground Stud as shown
to meet approval
agency requirements.
AC INPUT
GROUND WIRE
GREEN W/ YELLOW STRIPE
IMPORTANT!
AC input ground
wire must be
positioned on
bottom of Ground
Stud
GROUND STUD
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Communication Connections
MZ-RD Network
The MZ-RD is connected to the gas monitor using a shielded twisted pair instrument cable. The maximum
distance between the furthest gas monitor and MZ-RD is 4500 feet.
Use any of the remaining service knockouts to gain access to the interior of the unit. The RS-485
communication wiring between the gas monitor and MZ-RD must be connected in the following manner:
1.
2.
3.
4.
Locate the RS-485 connector in the gas monitor (See appropriate gas monitor manual).
Connect one lead of a twisted shielded pair to the “B” connection point; note the wire color.
Connect the second wire to the “A” connection point (the middle); note the wire color.
Connect the ground to the “GND” connection point
Locate the RS-485 connector marked “TO MONITORS” in the MZ-RD. This connector is located on the
bottom of the MZ-RD PC board, second from the right. Run the wire to the MZ-RD and connect the twisted
shielded pair to the RS-485 TO MONITORS connector using the same color code as used on the gas
monitor.
RS-485 to HOST Connector
Integration with Building Management
System
A second RS-485 connector allows a Building Management
System to “talk” to the gas monitor network through the MZRD. The connection is established using a shielded twisted
pair cable.
Use any of the remaining service knockouts to gain access to
the interior of the MZ-RD. Locate the RS-485 connector
marked “TO HOST” and remove it from the circuit board.
Secure the wire leads to the connector in the orientation as
displayed on the board. Check to make sure the polarity
matches the wiring to the Building Management System.
When connections are secured, carefully plug the connector
back onto the circuit board.
Instruction 3015-5157
7
MZ-RD – Multi-Zone Remote Display
Connecting External Alarms
Overview
Two SPDT relays are available for the connection of external alarm devices. These alarms are useful for
alerting the user to global conditions anywhere on the network. Each relay can be programmed to respond
to alarm, fault, or ready conditions.
Connection
Use the AC conduit or any of the remaining service knockouts to gain access to the interior of the MZ-RD.
Locate the relay connector (page 5) and remove it from the circuit board. Secure the wire leads to the
connector orienting them as shown in the diagram below. After connections are secured, carefully plug the
connector back onto the circuit board.
MZ-RD Relay Connector
NC
COMMON
NC
NO
COMMON
NO
Relay
#2
Relay
#1
NOTE:



8
Each relay can be connected as normally open (NO), or normally closed (NC).
Power for the external alarms can be tapped off the AC IN connector.
The relay contacts are rated 2A at 250VAC (inductive) and 5A at 250VAC (resistive).
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
3 Overview
Remote Display Module Overview
The MZ-RD displays comprehensive information about the gas monitor network status and enables
complete programming control of all system operations.
When first powered up, a splash screen appears indicating the firmware revision number. After a brief
moment the System Screen is displayed.
Display
Screen
A back-lit LCD
screen
 Use the ESC key to go back
(cancel) or to silence an alarm.
 Use the Arrow keys for multidirectional movement in making
selections & moving the cursor.
 Use the ENTER key to initiate
& accept a selection.
LED Indicators:
ALARM
FAULT
ON
RED:
Alarm condition
detected in the network
YELLOW:
System fault detected in
the network
GREEN:
Monitor is powered on
The System Screen
LOCATION
ZONE 01 LOC
After the System screen is displayed, press the ENTER key. The
Monitor 1 location block on the screen will highlight and begin to
flash.
With Monitor 1 selected,
1. Press ENTER to access other screens that contain information
and setup criteria for Monitor 1.
2. Use the Arrow keys to make data entry selections on each
screen.
3. Press the ENTER key to accept the entries or use ESC to cancel
and return to the previous screen.
4. When programming is completed, use the ESC key to return to
the System screen.
To access Monitors 2, 3 or 4, use the down Arrow key. Access information for these monitors in the same
manner as described above for Monitor 1.
In like fashion, use the Arrow keys to navigate through the screens and the ENTER key to make selections
for ALARMS, FAULTS, ZONES, the date/time or MZ-RD SETUP.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Some of the screens you will access will require data entry, such as the date/time setup. These screens will
appear with a character selected, as displayed below. Use the up/down Arrow keys to scroll through the
characters provided for that character’s place. Use the left/right Arrow keys to move the cursor on the text
line. When all character selections for the screen are completed, press ENTER to accept the entries.
System Programming
Setup Parameters
Before working with the gas monitor network, several global parameters must be defined. Most of these are
entered in the MZ-RD Setup Screens or via the PC software. Parameters must also be defined for each
gas monitor connected to the network. These settings serve to identify each monitor and define how they
operate. These are entered in the Setup Screens. Finally, parameters must be defined for each individual
monitoring zone. These are entered in the Zone Setup Screens.
Password Protection
The MZ-RD can be password protected to prevent the unauthorized editing of setup parameters. When
password protection is enabled, an operator may still navigate between screens to observe settings or
monitor network status. The password can be alpha-numeric.
The unit is shipped with password protection OFF. Entering a password in the MZ-RD Setup Screen #1
enables password protection. After protection is enabled, the user will be prompted to enter the password
when an attempt is made to edit a setup parameter.
After entering the password, a 30 minute time period will be allowed for entries, after which the user will
again be prompted to re-enter the password.
IMPORTANT: Make note of your password and save it.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Setup Programming
Setting the Clock
On the System Screen, access the Clock setup screen.
Clock Setup Screen
Use the cursor keypad to modify the field value and accept your entries. When editing is complete, do one
of the following:

Select the SET RD CLOCK option to synchronize all gas monitors to the current date/time setting.

Select the ESC option to cancel all edits and revert to the previous setting.

Press ENTER to accept the current date/time setting.
Navigating to the 1st MZ-RD Setup Screen
On the System Screen, select MZ-RD SETUP to access the MZ-RD Setup Screen #1.
MZ-RD Setup Screen #1
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Num Monitors on Net
This is the number of gas monitors connected to the MZ-RD.
NOTE: When first powered up, the MZ-RD will automatically detect all gas monitors on the network
with unique node addresses. Refer to Gas Monitor Node Address on page 13.
Monitor Baud
This is the baud rate of all gas monitors connected to the network. The default valve is 19200.
NOTE: All gas monitors on the network must have the same baud rate.
Audible Alarm
This parameter selects the function of the MZ-RD’s internal audible alarm. Select Unused, Monitor on,
Evacuate, Spill, Leak, Fault, or Alarm.
BMS
This enables or disables the connection to a Building Management System. When selected, use the
UP/DOWN cursor keys to toggle the setting.
BMS Baud Rate
This is the baud rate of the Building Management System.
Password
This field is used to define a system password. The default setting is 000, which provides no password
protection.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Navigating to the 2nd MZ-RD Setup Screen
On MZ-RD Setup Screen #1, select MORE to access MZ-RD Setup Screen #2. Select BACK to return to
MZ-RD Setup Screen #1.
MZ-RD Setup Screen #1
MZ-RD Setup Screen #2
Setting Relay Parameters
This setting determines the function of relays 1 and 2 mounted inside the MZ-RD unit. Select Unused,
Monitor On, Evacuate, Spill, Leak, Fault, or Alarm.
Node Address
This value is the node address from 1 to 15 assigned to each gas monitor which is on the network.
These values must match the settings on each gas monitor.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Navigating to the 1st and then 2nd Monitor Setup Screen
From the System Screen, select the Multi-Zone unit you wish to set up to access that unit’s Monitor Setup
Screen #1.
System Screen
Monitor Setup Screen #1
On Monitor Setup Screen #1, select the SETUP option to go to Monitor Setup Screen #2. To return to
the System Screen, press ESC.
Monitor Setup Screen #2
NOTE: For description or information on changing these settings please refer to the appropriate
gas monitor instruction manual.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Navigating to the 3rd Monitor Setup Screen
From Monitor Setup Screen #2, select the MORE option to go to Monitor Setup Screen #3. Select the
BACK option to return to Monitor Setup Screen #2. To return to the System Screen, press ESC.
Monitor Setup Screen #2
Monitor Setup Screen #3
NOTE: For description or information on changing these settings please refer to the appropriate
gas monitor instruction manual.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Zone Setup Programming
Navigating to the 1st Zone Setup Screen
From the System Screen, access the Monitor screen for the selected zone. On the Monitor Screen, select
ZONES.
System Screen
Monitor Screen
The Zone Setup screen will be displayed. To return to the System Screen, press ESC.
Zone Setup Screen #1
NOTE: For description or information on changing these settings please refer to the appropriate
gas monitor instruction manual.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Navigating to the 2nd Zone Setup Screen
On Zone Setup Screen #1, select MORE to access Zone Setup Screen #2. Select BACK to return to
Zone Setup Screen #1. To return to the System Screen, press ESC.
Zone Setup Screen #1
Zone Setup Screen #2
NOTE: For description or information on changing these settings please refer to the appropriate
gas monitor instruction manual.
Instruction 3015-5157
17
MZ-RD – Multi-Zone Remote Display
Navigating to the Trend Screen
On Zone Setup Screen #2, select the Trend option on the bottom left side to access the Trend screen.
Zone Setup Screen #2
Trend Screen
The trend graph opens with the cursor located over the most recent data point. Use the LEFT/RIGHT cursor
keys to move the cursor to different data points. Holding a key down will cause the cursor to move rapidly
across the screen. As you move the cursor position, the date and time of that reading, along with the ppm
value, are displayed at the top of the screen above the graph. The trend graph is automatically scaled to
accommodate the largest ppm value displayed. The ZOOM OUT and ZOOM IN options allow you to adjust
the vertical scale of the graph.
The trend data is stored on a first-in, first-out basis. After 100 trend values have been stored the 101st value
will replace the first value stored. Therefore, in normal operation, when entering trend mode the cursor will
be located at the most recent data point. The data points to the left of the initial cursor location will be the
next most recent. The data point to the right will be the oldest data point in the buffer and will be over
written by the next data point.
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
4
General Operation
Functional Overview
Normally each gas monitor will sequentially perform measurements on its active zones without user input.
The total time it takes a gas monitor to complete a measurement cycle is directly proportional to the number
of active zones and the physical length of the air lines. Monitors linked together on a network operate
independently of each other and consequently complete their respective measurement cycles at different
rates.
The MZ-RD operates by polling the network approximately once every 12 seconds to determine the current
status of the gas monitors. If more than one gas monitor is connected to the network, it will sequentially poll
each monitor for its status. This means that the more complicated the network, the longer it will take the
MZ-RD to update the status information for all zones.
To display all the zones being monitored, go to the System Screen (Page 23) and press the ZONES key.
The Zone Screen
The top level Zone Screen provides a summary view of zone activity across the network. Each screen
displays information from a single Multi-Zone monitor as indicated at the top of the display. Each screen
can display information for up to 8 zones, and depending on the configuration of the system, there can be
up to two screens for each Multi-Zone. Use the UP/DOWN cursor keys or the NEXT key to scroll the screen
display.
Each box displays the zone location and the last ppm measurement. A blinking box indicates that a
measurement is currently being taken in that location. An inverse flashing box indicates an alarm condition
in that zone.
Zone Screen
To further investigate the status of any zone, select the zone and press the ENTER key. That monitor's
Zone Setup Screen #1 will be displayed.
Instruction 3015-5157
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MZ-RD – Multi-Zone Remote Display
Alarm Conditions
When an alarm condition is detected anywhere on the network the red alarm will glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled
(page 15).
An inverse flashing box indicates an alarm condition in the affected zone. If manual acknowledgement is
required by the system setup, the alarm must be acknowledged by pressing the left arrow key while this
screen is displayed. If the right arrow key is pressed, setup information for the alarm screen will be displayed
Zone Alarm Screen
If the current Zone Screen appears normal, scroll through the displays using the NEXT/BACK keys or the
UP/DOWN cursor keys until you locate the affected zone. To further investigate the status of an affected
zone, select the zone and press the ENTER key. That Zone’s Setup Screen #1 will be displayed. You may
also select ALARMS to access the Alarm Summary Screen (page 26). Refer to Alarms on page 23 to
learn more about responding to alarms.
Fault Conditions
If a system malfunction occurs, the yellow FAULT LED will glow. Additionally, an external alarm device may
activate and an audible alarm may sound if those features have been enabled (page 15).
From the top level Zone Screen (page 21), make sure no zones are selected and pres ENTER to go to the
System Screen and then press the FAULTS key to access the Fault Screen (page 25). Refer to System
Faults on page 30 to learn more about responding to system faults.
Fault Screen
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
The System Screen
The System Screen provides a summary view of the entire gas monitor network. The boxes on the left
side of the screen indicate the status of each gas monitor. This includes the name, the current zone, and if
fault or alarm conditions are present on the network.
System Screen
Alarm Conditions
When an alarm condition is detected anywhere on the network the red ALARM LED will glow. Additionally,
an external alarm device may activate and an audible alarm may sound if those features have been enabled
(page 15).
The ALARMS box in the upper right hand corner of the screen will blink and the count value will change to
indicate the total number of alarm conditions on the network. To investigate an alarm, select the ALARMS
option to go to the Alarm Summary Screen (page 28). Refer to Alarms on page 23 to learn more about
responding to alarms.
System Screen (Alarm Mode)
Alarm
Condition
Instruction 3015-5157
21
MZ-RD – Multi-Zone Remote Display
Alarm Log
From the System Screen, access the gas monitor you wish to view.
System Screen
Monitor Setup #1 Screen
Select the ALARM EVENT LOG option and press ENTER to display the Alarm Log Screen.
Alarm Log Screen
L=LEAK S=SPILL E=E
VACUATE
Use the LEFT/RIGHT and UP/DOWN cursor keys to move through the log.
The Alarm log shows the last 20 alarm events. An alarm event is the occurrence of any alarm, any change
in alarm level, or the clearing of any alarm. The alarm level is indicated by an L (leak), S (spill), or E
(evacuate). The time and date of the alarm are displayed when the cursor is placed over the alarm.
22
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Fault Conditions
If a system malfunction occurs, the yellow FAULT LED will glow. Additionally, an external alarm device may
activate and an audible alarm may sound if those features have been enabled (page 15).
The FAULTS box on the right of the screen will blink and then counts the number of gas monitors on the
system with a fault. To investigate a fault, select the FAULTS option to go to the Fault Screen (page 25).
Refer to System Faults on page 30 to learn more about responding to system faults.
System Screen (Fault Mode)
ALARMS
COUNT = 01
Fault
Condition
Instruction 3015-5157
FAULTS
COUNT = 01
23
MZ-RD – Multi-Zone Remote Display
Alarms
Functional Overview
If the ppm level for any zone exceed its designated spill, leak, or evacuate thresholds, an alarm condition
will be created. Once the gas monitor completes a measurement cycle in the affected zone the alarm
condition will be indicated. At that time the red ALARM LED on the gas monitor will glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled
(pages 15 & 19).
The next time the MZ-RD polls the affected monitor, its red ALARM LED will glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled
(pages 15 & 19).
The alarm condition may or may not have to be acknowledged for the system to return to normal operation.
Responding to Alarms
There are two screens from which an operator can respond to alarms:

From the System Screen, select the ALARMS field to go to the Alarm Summary Screen.

From the top level Zone Screen (page 21) select the ALARMS field at the bottom of the display
screen to go to the Alarm Summary Screen.
Alarm Summary Screen
ALARMS
The Alarm Summary Screen displays a list of all alarm conditions pending across the network. The screen
is divided into 8 boxes, and each box represents a single alarm. If more than 8 alarms are pending
additional pages can be displayed by pressing the MORE key.
Each box displays the zone number, zone name, and the current ppm reading. A flashing box indicates an
alarm that has not been acknowledged. A static box represents an alarm that has been acknowledged but
has not yet been cleared from the system.
24
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Alarm Detail Screen
To further investigate an alarm, select the alarm on the Alarm Summary screen, then press ENTER to
access the Alarm Detail Screen.
Alarm Detail Screen
The Alarm Detail Screen displays more comprehensive information about the nature of the alarm including:

Complete location information

Refrigerant and current ppm

Peak ppm and peak time

Type of alarm, alarm time, and date
This screen provides the following three options at the bottom of the display:
ACK (<<)
Acknowledges the alarm as described in the next section
ESC
Returns to the Alarm Summary Screen
SETUP (>>)
Navigates to Zone Setup Screen #1 (page 19), which enables you to review the
zone setup parameters and access the Trend Screen
Instruction 3015-5157
25
MZ-RD – Multi-Zone Remote Display
Acknowledging Alarms
Each pending alarm may require, depending upon selected alarm mode, acknowledgment before the
system returns to normal operation (refer to Alarm Ack Mode on page 23). To acknowledge an alarm,
navigate to the Alarm Detail Screen and press the ACK key as previously described. You will then be
returned to the Alarm Summary Screen and the box associated with that alarm will no longer be blinking,
indicating that the alarm has been acknowledged. Repeat this procedure to acknowledge any remaining
alarms.
Alarm Summary Screen (Acknowledge Mode)
ALARMS
When all the alarms associated with a given gas monitor are acknowledged, its RED LED will turn off and
any external alarms connected to the gas monitor relays will de-activate. All pending alarms across the
entire network must be acknowledged before the MZ-RD returns to normal operation. When that occurs, its
RED LED will turn off and any associated external alarms connected to the MZ-RD relays will de-activate.
The system will continue to generate new alarms if ppm values above the alarm thresholds are detected.
26
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
The Trend Screen
Overview - Log Interval
The gas monitor retains a data log of 100 measurements for each zone. The log interval is the number of
minutes from 1 to 1440 between each log point. This parameter can be changed from Zone Setup Screen
#1 (pages 17 & 19).
The default setting for this parameter is 1440 minutes (24 hours). If the log interval time is set to 0, then a
measurement is recorded in the trend log after every measurement cycle. Therefore, after the trend log is
filled it will contain the last 100 measurement points for a zone. If you want the data logged less frequently
you should increase this value. It is important to remember that cycle time is dependent on many factors,
including the number of zones being monitored, input line length, and the run zeroing mode selected.
Before changing this value it may be useful to first review the log data using the Trend Screen to determine
the nominal cycle time.
Navigating to the Trend Screen
Access the Trend Screen from the Zone Screen as follows:
From the top level Zone Screen (page 17) press the key adjacent to the zone you wish to work with to first
display its Zone Setup Screen #1. Then press the TREND key at the bottom of the display to go to the
Trend Screen.
Trend Screen
The trend graph opens with the cursor located over the most recent data point. Use the LEFT/RIGHT
cursor keys to move the cursor to different data points. Holding a key down will cause cursor to move
rapidly across the screen. As you move the cursor position, the date and time of that reading, along with the
ppm value, are displayed at the top of the screen above the graph. The trend graph is automatically scaled
to accommodate the largest ppm value displayed. The ZOOM OUT and ZOOM IN options, located in the
bottom corners of the screen, allow you to adjust the vertical scale of the graph.
The trend data is stored on a first-in, first-out basis. After 100 trend values have been stored the 101st value
will replace the first value stored. Therefore, in normal operation, when entering trend mode the cursor will
be located at the most recent data point. The data points to the left of the initial cursor location will be the
next most recent. The data point to the right will be the oldest data point in the buffer and will be over
written by the next data point.
Instruction 3015-5157
27
MZ-RD – Multi-Zone Remote Display
System Faults
Functional Overview
If a system malfunction occurs, the gas monitor will detect the problem and cause its yellow FAULT LED to
glow. Additionally, an external alarm device may activate and an audible alarm may sound if those features
have been enabled (page 15).
The next time the MZ-RD polls the affected monitor its yellow FAULT LED will also glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled
(page 15).
Depending on the nature of the fault, the gas monitor may or may not continue to operate normally. Under a
non-critical fault condition, the gas monitor will continue to measure and log data, but some peripheral
functions may be compromised. Under a critical fault condition, action is required for the gas monitor to
operate normally. The table on the following page lists the various fault conditions and explains what action
should be taken to correct the problem.
Navigating to the Fault Screen
On the System Screen, select FAULTS to access the Fault Screen.
System Screen
Fault Screen
CRITICAL FAULTS
 NO FLOW ON ZONE – On the System Screen, select ZONES. The Zone Screen will display a “NO
FLOW” message in each individual zone affected. Check for a blockage in the air sample line or at the
line end filter. After the blockage has been cleared, the gas monitor will return to normal operation
after the zone has been sampled. NOTE: This may take several minutes since it is dependent upon
how many zones there are and their lengths. The gas monitor will clear the fault the next time it polls
the effected zone and the MZ-RD will return to normal operation the next time that it polls the gas
monitor.
 NO FLOW ON PURGE – Check the purge line for a blockage. Verify that the length of the purge line
and exhaust line do not exceed 300 feet in length.
 NO FLOW DETECTED – Check for proper pump operation. Check the water trap – drain if necessary.
 CLIPPING FAULT – The detector voltage may be out of tolerance. Check the Diagnostic Screen for
the DET voltage, AVE voltage and ZERO voltage. Call the factory with this information for further
instructions.
 REZERO VOLT TOL – The detector output voltage is out of tolerance. Check the Diagnostic Screen
and contact the factory for assistance.
28
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
 TRIGGER FAULT – No trigger from IR source pulser. Contact factory with all information from the
DIAGNOSTIC SCREEN for farther instructions.
NON CRITICAL FAULTS
 BOX TEMP FAULT – Enclosure’s internal temperature is outside normal range (or IR sensor has
failed). Check the installation to verify that the monitor is not being subjected to extreme
temperatures. Verify that the ventilation holes are not obstructed. Check the Diagnostic Screen for
the ZERO temperature, BNCH temperature and BOX temperature. Call the factory with this
information for further instructions.
 BENCH TEMP FAULT – IR sensor is outside of normal operating range (or sensor has failed). Check
the installation to verify that the monitor is not being subjected to extreme temperatures. Check the
Diagnostic Screen for the ZERO temperature, BNCH temperature and BOX temperature. Call the
factory with this information for further instructions.
 PRESSURE SENSOR – Manifold pressure is outside normal operating range (or sensor has failed).
Check the Diagnostic Screen record ALL data. Call the factory with this information for further
instructions.
 LOOP FAULT – This would only be displayed if the dual 4-20 mAdc option was installed and one or both
current loops are open. Check the wiring to load/monitoring circuit on both 4-20 mA loops.
 CONFIG FAULT – There is an error in Monitor Setup Screen #2 – Number Zones Installed field, or in
MZ-RD Setup Screen #1 – Number of monitors on Network field. Check that the number of zones
installed for each unit and the number of units on the network are properly programmed. Check to
ensure that the manifold solenoid cable connector in each unit is securely fastened to its terminal
connector. Check for an illegal parameter. If necessary, reset to the factory default settings.
Reset to Factory Default Settings
IMPORTANT: Performing this function deletes all program parameters, alarms, faults, trends and
log files.
Resetting a Multi-Zone –
1. Press and hold down the Factory Default switch inside the gas monitor (see appropriate gas
monitor instruction manual)
2. Cycle AC power OFF, then ON
3. After the unit emits five beeps, release the switch.
4. Reprogram the gas monitor as described in the Setup Programming section of the appropriate
gas monitor’s Instruction Manual.
Resetting the MZ-RD – Occasionally it will be necessary to rest the MZ-RD to its factory default settings.
1. Press and hold down the Factory Default switch inside the gas monitor (see appropriate gas
monitor instruction manual)
2. Cycle AC power OFF, then ON;
3. After the unit emits five beeps, release the switch.
Instruction 3015-5157
29
MZ-RD – Multi-Zone Remote Display
Clearing System Faults
If the fault condition is associated with a gas monitor, the monitor will return to normal operation soon after
the problem is corrected. At that time the YELLOW LED will turn off and any external alarms connected to
the monitor’s alarm relays will also turn off. The MZ-RD will return to normal operation the next time it polls
the affected gas monitor.
Once the system malfunction has been corrected it may take some time for the fault condition to clear
completely. If the fault is associated with a specific zone, the gas monitor must first cycle back to the
affected zone before it returns to normal operation. At that time the YELLOW LED will turn off and any
external alarms connected to the monitor’s alarm relays will also turn off. The MZ-RD will return to normal
operation the next time it polls the affected monitor.
Viewing Fault Log
A data log of the last 20 fault conditions is retained in memory. From the Fault Screen press ENTER to
display the fault log.
Fault Screen
Fault Log Screen
The Fault Log screen lists potential fault conditions in the left column. It also displays a check mark
indicating which problems were associated with each fault condition, as represented by the vertical cursor
bar. As you move the bar horizontally using the LEFT/RIGHT cursor keys, the date and time the fault
condition was detected is displayed in the upper right hand corner of the display window.
Anytime the fault status changes, there is an entry in the fault log, both when the fault occurs and when it is
cleared.
30
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
The Calibration Screen
NOTE: Calibration cannot be performed on the remote device. Information for performing this procedure on
the main monitor is provided below.
Overview
The Calibration Screen is used to adjust the calibration factor for each refrigerant gas. It is also used to
program the instrument for new gasses.
IMPORTANT: Changing information on CAL FACTORS will VOID the factory calibration. Typically, the unit
will remain within the factory-calibrated accuracy indefinitely and no calibration is required. Complex
software algorithms adjust for temperature drift, IR source aging, and pressure changes in order to keep the
unit within factory accuracy specifications.
Navigating to the Calibration Screen
On the System Screen, select the target gas monitor and access that monitor’s Setup Screen #1. Then
select the CAL option to go to the selected monitor’s Calibration Screen.
Setup Screen
Setup Screen
Calibration Screen
Adjusting Calibration Factor
The factory default cal factor for standard units is 1.000. This value may be different if the high accuracy
option is ordered.
Modifications to calibration must be done on each monitor. If calibration is attempted from the MZ-RD unit,
the “Use monitor front panel interface to adjust calibration” message is displayed.
Instruction 3015-5157
31
MZ-RD – Multi-Zone Remote Display
The Diagnostic Screen
Overview
The Diagnostic Screen displays reference values for use by repair technicians for troubleshooting
purposes.
Navigating to the Diagnostic Screen
On the System Screen, select the gas monitor you wish to view and press ENTER to access that monitor’s
Setup Screen. Press the DIAG key to go to the selected monitor’s Diagnostic Screen.
System Screen
Setup Screen
Diagnostic Screen
1
2
3
4
5
6
7
8
9
10
11
12
13`
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Diagnostic Screen Overview
The Diagnostic Screen contains sensor data and status information useful for trouble shooting various fault
conditions. An explanation of each line is given below along with normal operating ranges.
1. Detector Voltage – Peak-to-peak output of the IR sensor. In the absence of gas, this value range
is 3.900V to 4.500V.
2. Average Detector Voltage – Running average of the values displayed in line 1.
3. Zero Voltage – IR sensor output that was stored during the last purge cycle and has the same
range as line 1.
4. Noise – A 16 point running average of the noise portion of IR sensor output. This reading is
valuable mainly when refrigerant is NOT present.
5. Average Absorbency – Optical absorbency computed from the Average Detector Voltage and
Zero Voltage. In the absence of refrigerant, the absorbency is 0.000AU. When sampling refrigerants,
its value varies proportionally with the refrigerant concentration.
6. uMoles/L – Absolute concentration in micro-moles per liter of refrigerant based on line 4 and the
internal calibration. There are two figures given. The first (which is annotated by a B) is the actual
measurement at the IR sensor. The second is the calculated value corrected to ambient conditions
(temperature + pressure).
7. PPM – Parts Per Million (ppm) is the volume concentration referenced to standard temperature
and pressure and is computed from the Average Absorbency, Zero Temperature and Ambient
Pressure. There are two figures displayed. The first (annotated by a B) is the actual ppm at the IR
sensor. The second is a ppm reading normalized to standard temperature and pressure.
8. Zero Temperature – Displays the sensor and enclosure temperature measured and stored during
the last purge cycle in degrees C.
9. Bench Temperature – Current IR sensor temperature in degrees C as well as the raw voltage
coming from the temperature sensor. This value can range from ambient to ambient +15 degrees C.
10. Box Temperature – This is the current internal enclosure temperature along with the raw
voltage from the temperature sensor, and has the same range as the IR sensor temperature.
11. Pressure – This is the current absolute manifold pressure in PSIA along with the output voltage
of the pressure sensor. This value should always be 0.2 to 1.0 PSIA below ambient (AMB).
12. Vacuum – The vacuum pressure is measured every purge cycle by closing all sample valves.
Its value is typically 2.5 to 4.0 PSIA below ambient (line 13).
13. Ambient – Ambient pressure is measured every purge cycle with the sample pump off and the
manifold open. Its value is weather and altitude dependent and can range from 10.0 to 15.5 PSIA.
Instruction 3015-5157
33
MZ-RD – Multi-Zone Remote Display
Service Mode
When activated, the Service Mode will disable a specific gas monitor for a specified length of time, up to 240
minutes (4 hrs) to permit time for servicing the unit. The default is 60 minutes. This time interval can be
changed as described in the Service Timeout section on page 16.
IMPORTANT: Note that while in the Service Mode, no measurements are made, nor are alarms activated.
1. From the System Screen, select the gas monitor you wish to place into Service Mode.
2. On Monitor Setup Screen #1, select SERVICE MODE ENTRY. An IN SERVICE option will appear
to continue to “CONFIRM” or to “QUIT”.
3. To confirm IN SERVICE, press the ENTER key twice within 3 seconds.
Note that the System Screen will display which monitors are in the Service Mode.
To exit the Service Mode, select QUIT.
System Screen
System Screen (Service Mode)
Monitor Setup Screen #1
IN SERVICE
CONFIRM/QUIT
Monitor in
Service
Mode
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Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
Appendix
Logic Diagram
ZONE SCREEN
SYSTEM SCREEN
DIAG
ALARMS
FAULTS
ALARM
DETAIL
FAULT
DATA LOG
CLOCK
MZ-RD
SETUP #1
MONITOR
SYSTEM
MZ-RD
SETUP #2
CALIBRATE
MONITOR
SETUP
ZONE
SETUP #1
TREND
Instruction 3015-5157
ZONE
SETUP #2
35
MZ-RD – Multi-Zone Remote Display
Specifications
MZ-RD Specifications
Product Description
The Remote Display provides remote programming, interrogation and display
functionality to support Bacharach’s gas monitors. The system design supports
compliance to ANSI/BSR ASHRAE 15-2007 and ASHRAE Safety Code
34-2007.
Inputs
The MZ-RD accepts inputs from up to four gas monitors. It offers a wide variety
of displays and can fully program any associated monitor.
Display
Back lit LCD.
Data Logging
The user may view a graphical display of the ppm trend for each zone.
Power Indication:
Green LED glows when AC power is applied
Alarm Indication:
Red LED glows and alarm condition is displayed
Fault Indication:
Yellow LED glows and fault condition is displayed
Password Protection
Power Safety Mode
The MZ-RD can be password protected to prevent the unauthorized editing of
setup parameters without disturbing the ability to monitor system outputs.
Fully automatic system reset; all parameters maintained
Monitoring Distance
Up to 4500 feet from furthest gas monitor
Communications:
Full two-way communication with gas monitor monitors via RS-485 interface.
Second RS-485 interface provided for connection to a Building Management
System.
Relays:
Two SPDT programmable alarm contacts are provided rated 2A at 250VAC
(inductive) and 5A at 250VAC (resistive)
Operating Temp
32 to 113 °F (0 to 45 °C)
Ambient Humidity
5 to 90% (non-condensing)
Size/Weight
11"H x 10"W x 3"D - 5 lbs.
AC Power
100 to 240 VAC, 50/60 Hz, 20 W
Mounting
Wall mount
Certification
UL 61010-1, CAN/CSA 22.2 No. 61010-1 & CE Mark
Warranty
2 years from date of shipment
Altitude Limit
6,562 ft (2,000 m)
Specifications subject to change without notice
36
Instruction 3015-5157
MZ-RD – Multi-Zone Remote Display
NOTES:
Instruction 3015-5157
37
MZ-RD – Multi-Zone Remote Display
Headquarters:
621 Hunt Valley Circle, New Kensington, PA 15068
Website: www.mybacharach.com • E-mail: [email protected]
Printed in U.S.A.
® Registered Trademark of Bacharach, Inc.
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