Beacon MEGA Manual

Part No. 6-847681-00 Rev. D Pg. 1
WARD1
MEGA
POWERSUPPLY
cal electronic gasalarm
OXYGEN
SILENCE
50
SYSTEMSTATUS
psig
LOW NORMAL HIGH
GREEN
REDCORRECTIVE ACTION REQUIRED
SYSTEM NORMAL
co
MEGA
WARD1
medical electronic gasalarm
MEGA
OXYGEN
WARD1
medical electronic gasalarm
MEDICALAIR
50
SYSTEMSTATUS
psig
LOW NORMAL HIGH
MEGA®
Medical Electronic Gas Alarm
Installation, Operation, and Maintenance Instructions

2Part No. 6-847681-00 Rev. D
Table of Contents
Introduction
Alarm Modular Components............................................................................................................4
Definitions................................................................................................................................................5
Alarm Configurations...........................................................................................................................5
Unpacking
Factory Preassembled Alarm Panels..............................................................................................5
Field Assembled Alarm Panels ........................................................................................................6
Rough-In Installation
Alarm Panel Rough-In Boxes ...........................................................................................................7
Interconnect Boards.............................................................................................................................8
Sensor Pigtail..........................................................................................................................................8
Sensor Module Rough-In boxes .....................................................................................................9
Gas/Vacuum Service Rough-In........................................................................................................9
Mount Alarm Panel............................................................................................................................10
Electrical Connections ......................................................................................................................11
Pipeline Connections.........................................................................................................................11
Dust Covers...........................................................................................................................................11
Wiring Installation
General Requirements......................................................................................................................12
Wiring Requirements and Routing ..............................................................................................13
Wiring Schematics
Power Supply Module...............................................................................................................15
Digital Display Module to Sensor Module........................................................................16
Digital Display Module User-Assigned Signals..............................................................17
Digital Display Module Remote Pressure/Vacuum Transmission............................18
Digital Display Modules As Master Alarms .....................................................................19
Multi-Signal Alarm Module ....................................................................................................20
Computer Interface Relay Module.......................................................................................21
Digital Display Module/Multi-Signal Alarm Module External Signal Relay.........22
Pressure/Vacuum Switches ....................................................................................................23
MEGA Network Wiring.............................................................................................................24
Typical Master Alarm Wiring Examples
Bulk Oxygen System With Reserve......................................................................................25
Nitrous Oxide Manifold System Without Reserve..........................................................26
Duplex Medical Air Compressor ..........................................................................................27
Nitrogen Manifold System Without Reserve....................................................................28
Duplex Vacuum Pump System...............................................................................................29

3
Part No. 6-847681-00 Rev. D
Finish Installation
Power Supply Module.......................................................................................................................30
Digital Display Module.....................................................................................................................31
Sensor Module ....................................................................................................................................31
Multi-Signal Alarm Module ............................................................................................................32
Computer Interface Relay Module...............................................................................................32
Blank Module.......................................................................................................................................32
Trim Plate Alignment .........................................................................................................................33
Cover Plates (All Modules).............................................................................................................33
Operation
Start-Up and Checking ....................................................................................................................34
Set-Up Procedure
Digital Display Module .............................................................................................................35
Multi-Signal Alarm Module....................................................................................................38
Monitoring Mode
Digital Display Module.............................................................................................................41
Multi-Signal Alarm Module ....................................................................................................42
Testing
Digital Display Module .....................................................................................................................43
Multi-Signal Alarm Module ............................................................................................................43
Manual Testing ....................................................................................................................................44
Troubleshooting Guide .........................................................................................................................46
Replacement Components
Power Supply Module.......................................................................................................................49
Digital Display Module.....................................................................................................................49
Sensor Module ....................................................................................................................................50
Multi-Signal Alarm Module............................................................................................................51
Computer Interface Relay Module...............................................................................................51
Table of Contents

4Part No. 6-847681-00 Rev. D
Power Supply Module
Features:
•Provideselectrical
power for digital
display modules,
sensor modules, multi-
signal alarm modules,
and computer interface
relay modules.
• Replaceable fuse.
•Audiblealarmwithvolumecontrol.
• Network wiring terminals and tester
connection.
Digital Display Module
Features:
•DigitalLCDreadoutofthe
system pressure or vacuum
signal transmitted from a sensor
module. LEDs indicate if the
levels are low, normal, or high.
•Threeuser-assignedLED
indicators may be connected to dry-contact
switches.
•Generalfaultrelayactivatesonanyalarmfault
condition.
•Cantransmitthepressureorvacuumsignalto
another digital display module for remote
applications.
• Can be networked to communicate with a
personal computer or Johnson Controls
Metasys® building automation system.
Sensor Module
Features:
• Sensor modules are
gas/vacuum service specific and
connect directly to the pipeline.
• Transmits a signal to a digital
display module at the alarm
panel.
•Canbelocatedadjacenttothealarmpanelor
in remote locations from the alarm panel.
Computer Interface Relay
Module
Features:
•Providesaninterfacebetweena
multi-signal alarm module or
the three user-assigned signals
on a digital display module and
a building automation system
computer.
•Notrequiredwhencommunicatingwitha
Johnson Controls Metasys® building
automation system.
Multi-Signal Alarm Module
Features:
•Monitorsuptosixdry-contact
switch signals.
•Generalfaultrelayactivateson
any alarm fault condition.
• Can be networked to
communicate with a personal
computer or Johnson Controls Metasys®
building automation system.
Alarm Modular Components
Introduction
Blank Module
Features:
•Reservesaspaceinthealarm
panel for future expansion.
Power Supply Blank
Features:
•Usedabovethepower
supply module to make
the alarm panel
rectangular when local
sensors are used.

5
Part No. 6-847681-00 Rev. D
Introduction
Definitions
Unpacking
Area Alarm Panel
Alarm panel which monitors the medical gas
and vacuum systems serving a specific area.
Dry-Contact
An electrical contact that is isolated or
unconnected from any electrical source.
LCD
Liquid Crystal Display
LED
Light Emitting Diode
Master Alarm Panel
Alarm panel which monitors the medical gas
and vacuum sources.
Alarm panels ordered under the APL,
APR, MPL and MPR part number series are
preassembled at the factory.
1. Carefully open the carton and verify
contents.
APL or MPL
• Factory preassembled rough-in
•Carton(s)offinishcomponents
•Instructions
APR or MPR
• Factory preassembled rough-in
•Carton(s)offinishcomponents
•Carton(s)ofremotesensors
•Instructions
2. Remove finish components carton(s).
3. Write the alarm panel location on the
finish component carton(s).
4. Store the finish components carton(s) in
a safe place for installation after the walls
are finished.
5. Proceed to Rough-In Installation.
Factory Preassembled Alarm Panels
Alarm Configurations
APL
Area alarm panel with local sensors. The
sensor modules are mounted directly above
the corresponding digital display modules.
APR
Area alarm panel with remote sensors. The
sensor modules are located up to 5000 ft
from the alarm panel.
MPL
Master alarm panel with local sensors. The
sensor modules are mounted directly above
the corresponding digital display modules.
MPR
Master alarm panel with remote sensors.
The sensor modules or switches are located
up to 5000 ft from the alarm panel.

6Part No. 6-847681-00 Rev. D
Alarms ordered as separate modules are
assembled on-site.
1. Carefully open the carton(s) and verify
contents.
Refer to diagrams on pages 49-51.
Power Supply Module
•Instructions
Rough-in components:
•Mountingboxwithdustcover
• (2) End panels
•(2)Grommets
•(4)Screws,#6-20x1/4
Finish components:
•Powersupplymodulechassis
•Trimplate
•Coverplate
•(4)Screws,#6-32x9/16
•(2)Screws,#6-32x3/4
• Gas ID and location labels
Digital Display Module
Rough-in components:
•Mountingboxwithdustcover
• Interconnect board
•(4)Screws,#6-20x1/4
Finish components:
•Digitaldisplaymodulechassis
•Coverplate
•(2)Screws,#6-32x1-1/2
•Systemstatuslabels
Field Assembled Alarm Panels
Unpacking
Sensor Module
Rough-in components:
•Mountingboxwithdustcover
• (2) End panels
• Gas/vacuum service rough-in
•(8)Screws,#6-20x1/4
Finish components:
• Sensor
•Trimplate
•Coverplate
•(2)Screws,#6-32x1-1/2
Multi-Signal Alarm Module
Rough-in components:
•Mountingboxwithdustcover
• Interconnect board
•(4)Screws,#6-20x1/4
Finish components:
•Multi-signalalarmmodulechassis
•Coverplate
•(2)Screws,#6-32x1-1/2
•Systemstatuslabels
Computer Interface Relay Module
Rough-in components:
•Mountingboxwithdustcover
• Interconnect board
•(4)Screws,#6-20x1/4
Finish components:
•Trimplate
•Coverplate
•(2)Screws,#6-32x1-1/2
2. Store the finish components in a safe
place for installation after the walls are
finished.
3. Proceed to Rough-In Installation.

7
Part No. 6-847681-00 Rev. D
Rough-In Installation
Alarm Panel Rough-In Boxes
Refer to the building plans to determine
alarm locations and configurations. Alarm
panels may be assembled into horizontal or
vertical configurations.
1. Arrange the mounting boxes to the
desired alarm panel configuration. The
larger power supply module mounting
box must be at the lower left of the alarm
panel.
2. Install a rubber grommet in the hole in
the right side of the power supply
mounting box.
3. Install an end cap onto the left side of the
mounting box which will be adjacent to
the power supply. Use (2) #6-20 x 1/4”
screws.
NOTE:
If the alarm panel part number series is APL or MPL,
proceed to Mount Alarm Panel.
NOTE:
If the alarm panel part number series is APR or MPR,
proceed to Sensor Module Rough-In Boxes.
4. Remove the lower rear knockout from the
end panel and install a rubber grommet.
5. Place the right flange of the power supply
mounting box over the left flange of the
alarm module mounting box and attach
with (2) #6-20 x 1/4” screws.
6. Assemble remaining mounting boxes
using (2) #6-20 x 1/4” screws per
mounting box until the desired horizontal
width is reached.
7. Install an end cap on the last box in the
row using (2) #6-20 x 1/4” screws.
8. If the alarm panel will contain more than
one horizontal row, assemble the next
row.
NOTE:
Each row of mounting boxes must have end caps attached
to both ends.
TOPTOPTOPTOP
TOPTOPTOPTOP
TOP
TOP
TOP TOPTOPTOP TOP
Power supply
mounting box
Alarm module
mounting boxes
Mounting plate only
(used to make alarm
panel rectangular)
Figure 1. Arrange Mounting Boxes
NOTE:
The rubber grommet in the power supply mounting box
must align with the rubber grommet in the alarm
mounting box.
Figure 2. Assemble Horizontal Rows

8Part No. 6-847681-00 Rev. D
Rough-In Installation
9. Install a 1/2” x 2” pipe nipple (supplied by
others) between digital display module
mounting boxes and sensor module
mounting boxes. Refer to Figure 4.
10. Place the top of each lower mounting box
over the bottom of each upper mounting
box and attach with (2) #6-20 x 1/4”
screws per pair of mounting boxes.
Refer to Figure 3.
Figure 4. Local Sensor Rough-In Detail
1/2” x 2”
pipe nipple
(2) Locknuts
(2) Bushings
TOPTOPTOP
TOP TOP
TOP TOPTOPTOP TOP
Figure 3. Attach Mounting Boxes
Sensor
module
mounting
box
Digital
display
module
mounting
box
NOTE:
If the alarm panel has local sensor modules, they should
be mounted directly above the corresponding digital
display modules.
Alarm Panel Rough-In Boxes (Cont.)
1. Locate the interconnect board for the
module to be installed adjacent to the
power supply module.
2. Insert the end of the ten-wire ribbon
cable through the grommeted opening in
the lower left side of the mounting box
and into the power supply mounting box.
3. Install interconnect boards into alarm
mounting boxes using (2) #6-20 x 1/4”
screws. Refer to Figure 4.
Interconnect Boards Sensor Pigtail (Local Sensors)
Interconnect
board
4. Connect the ten-wire ribbon cable to the
plug on the adjacent interconnect board.
Gas/vacuum
service
rough-in
Sensor
pigtail
1. Route the sensor pigtail through the pipe
nipple. Refer to Figure 4.
2. Install the red wire into the T+ terminal
(Terminal block 2, terminal 6) on the
digital display module interconnect board.
To install the wire, use a small flat
screwdriver to depress the lever on the
terminal block.
3. Install the black wire into the T- terminal
(Terminal block 2, terminal 7).

Figure 5. Rough-In Dimensions
9
Part No. 6-847681-00 Rev. D
Rough-In Installation
Gas/Vacuum Service Rough-In
1. Remove the small knockout from the top
of each sensor module mounting box.
2. Insert the gas/vacuum service rough-in
assembly into the mounting box and
secure with (2) #6-20 x 1/4” screws.
Refer to Figure 4.
Sensor Module Rough-In Boxes
NOTE:
Gas/vacuum service rough-in assemblies are gas specific.
Be sure to install the gas/vacuum service rough-in in the
correct order according to the building plans.
Remote sensor modules may be installed
as individual units or ganged in a panel
configuration.
1. If sensor modules are to be ganged,
attach the mounting boxes together using
(2) #6-20 x 1/4” screws.
2. Install end panels to each end of the
assembled mounting boxes or to the
sides of each mounting box if installed as
individual units.
NOTE:
Sensor modules receive power from their corresponding
digital display modules. A separate power supply module
is not required for remote sensors.
TOPTOPTOP
TOP TOP
TOP TOPTOPTOP TOP
7-5/8”
10-7/8”
14-1/8”
Add 3-1/4” for
each additional
box.
3-1/2” Depth
8-1/2”
4-1/8”
9-5/8”

10 Part No. 6-847681-00 Rev. D
Rough-In Installation
Vertical Structural
Member (wall stud)
Horizontal supports
(supplied by others)
Copper Extension
Tu be s
Figure 6. Rough-In Installation
Dust
Covers
1. Prepare a rough wall opening large
enough to accommodate the rough-in
assembly. The opening must have rigid
horizontal members to support the rough-
in assembly. Refer to Figure 6.
2. Insert the rough-in assembly into the wall
opening and secure in place with
fasteners suitable for the horizontal
support materials.
Mount Alarm Panel

11
Part No. 6-847681-00 Rev. D
Rough-In Installation
Pipeline Connections
1. Braze the copper extension tubes from the
rough-in assembly to the appropriate
gas/vacuum piping system drops. Braze the
connections per the procedures required by
NFPA 99 or CAN/CSA-Z305.1. Use
appropriate measures to prevent overheating
and damage to the internal components of the
gas/vacuum service rough-in assemblies.
2. Perform standing pressure tests and cross-
connection tests as required by NFPA and
CSA. Note that vacuum service rough-in
assemblies include a plastic plug to permit
system testing under vacuum.
Dust Covers
1. Install the dust covers to protect the alarm
during the finishing of the walls. Refer to
Figure 8.
Figure 8. Install Dust Covers
Dust covers
Electrical Connections
1. Connect the power supply conduit from the
life safety branch of the building emergency
power system to the power supply mounting
box using the knockout shown in Figure 7.
2. If alarm panels are to be networked, connect
the conduit for the network wiring to the
power supply mounting box using the
knockout shown in Figure 7.
3. If using remote sensors or switches, connect
the conduit for external signal wiring to the
alarm mounting box using the knockout
shown in Figure 7.
NOTE:
Refer to Wiring Installation to determine the quantity
and routing of alarm signal wires.
Power supply wiring
120 VAC 50/60 Hz
Network wiring
Remote sensor or
switch wiring
Right side of alarm panel
Top of alarm panel
Figure 7. Knockouts

12 Part No. 6-847681-00 Rev. D
Wiring Installation
NOTE:
For sensor, switch, and network wiring, determine
the circuit length and then select the proper wire
size from the chart below.
Circuit Length (ft) Copper Wire (AWG)
0 to 2,000 18
2000 to 3,000 16
3,000 to 5,000 14
•PerNFPA99,medicalgasalarmsshallbe
powered by the life safety branch of the
emergency power system.
•PerNFPA99,allwiringshallbeprotectedfrom
physical damage by raceways or conduit in
accordance with NFPA 70, National Electrical
Code.
•Wiringrunsshouldbemadewithcolor-coded
wire. Record the color, signal and source of
the signal for each wiring lead to aid in
connection of the alarm finish components
•Whenroutingwiringinsidemountingboxes,
protect wire covering from damage.
IMPORTANT:
To reduce the possibility of electromagnetic
interference adversely affecting alarm performance,
follow these guidelines:
•Installalarmwiringinelectricalmetallictubing(EMT)
or other metallic conduit.
•Verifyendpanelsareinstalledonbothsidesofalarm
panels.
•Verifythatcoversarepresentonalljunctionboxes.
• Avoid installing alarms near radio transmitters.
•Avoidinstallingalarmsnearelectricalmotorsor
switchgear.
General Requirements

13
Part No. 6-847681-00 Rev. D
Wiring Installation
Wiring Requirements and Routing
• Two conductors are required from each signal
switch to each master alarm. Refer to
Schematics 3 and 6.
• Two conductors are required from each
remote sensor module to its corresponding
digital display module. Refer to Schematics
2 and 5.
•Ifalarmsaretobenetworked,twoconductors
are required to daisy-chain between power
supplies. Refer to Schematic 10.
Figure 9. Wire Routing Diagram
•Ifpressure/vacuumdatatransmissionisused,
two conductors are required between the two
digital display modules. Refer to Schematic
4.
•Ifacomputerinterfacerelaymoduleisused,
two conductors are required from each
relayed signal to the computer interface relay
module. Refer to Schematic 7.

14 Part No. 6-847681-00 Rev. D
Typical wiring diagrams of master alarms for
the following systems are provided:
1BulkOxygenSystemwithReserve
2NitrousOxideManifoldSystemwithout
Reserve
3 Duplex Medical Air Compressor
4NitrogenManifoldSystemwithoutReserve
5DuplexVacuumPumpSystem
The following wiring schematics are provided.
If you have any questions, please call Beacon
Medical Products Technical Support at 1-800-676-
1115.
1. Power Supply Module
2. Sensor Module to Digital Display Module
3. Digital Display Module User-Assigned Signals
4. Remote Pressure/Vacuum Transmission
5. Digital Display Modules As Master Alarms
6. Multi-Signal Alarm Module
7. Computer Interface Relay Module
8. External Signal Relay
9. Remote Pressure/Vacuum Switches
10. MEGA Network
Wiring Schematics Typical Master Alarm Wiring
Wiring Installation

J1 J2
PANEL
BUSS
CABLE
LINE GRD N
Power Supply Module
(top view)
Digital Display Module,
Multi-Signal Alarm Module, or
Computer Interface Relay Module
Interconnect Board
Line
Ground
Neutral
120 VAC 50/60 Hz
from building
normal and
emergency power
sources
RS-485
Computer
Interface
Alarm
Connection
Ten- w i re ribb o n
cable
Ten- w i re ribb o n c abl e t o
additional interconnect boards
Schematic 1. Power Supply Module
Wiring terminals
accept up to #12
AWG wire
15
Part No. 6-847681-00 Rev. D
Wiring Schematic: Power Supply Module

Schematic 2. Sensor Module to Digital Display Module
Digital display module
interconnect board
Ten- w i re ribb o n c abl e
to adjacent module
Twenty-wire ribbon cable to
digital display module chassis
Polarized
connector
Sensor module
Wiring terminals accept up
to #14 AWG wire
16 Part No. 6-847681-00 Rev. D
Wiring Schematic: Sensor Module to Digital Display Module
NOTE:
Maintain correct sensor polarity.
RED
BLACK

Factory installed
jumper wires
NOTE 1:
Remove only jumper wires from the terminals
that are to have field wiring connected.
Leave all other jumper wires in place.
Schematic 3. Digital Display Module User-Assigned Signals
Ten- w i re ribb o n
cable to adjacent
module
Digital display module
interconnect board
Supply Status
Signal Switches
SIGNAL 3
SIGNAL 2
SIGNAL 1
NOTE 2:
Dry contact
switches activate
alarms upon
opening (normally
closed)
Digital display module
interconnect board
Wiring terminals accept up
to #14 AWG wire
Twenty-wire
ribbon cable to
digital display
module chassis
Twenty-wire ribbon cable to
digital display module chassis Ten- w i re
ribbon cable
to adjacent
module
17
Part No. 6-847681-00 Rev. D02
Wiring Schematic: Digital Display Module User-Assigned Signals
Jumpers wires
removed.
See Note 1.
Jumpers wires
removed.
See Note 1.

18 Part No. 6-847681-00 Rev. D
Schematic 4. Digital Display Module Remote Pressure/Vacuum Transmission
Wiring terminals accept up
to #14 AWG wire
Twenty-wire ribbon cable to
digital display module chassis
Digital display module
interconnect board
at local alarm panel
Digital display module
interconnect board
at remote alarm panel
Factory installed
jumper wires
To sensor module.
Refer to Figure 2.
Pressure/vacuum data transmission line
NOTE 1:
Remove only jumper wires from the terminals
that are to have field wiring connected.
Leave all other jumper wires in place.
jumper wire
removed.
See Note 1.
NOTE 2:
This method connects alarm panels
through indirect means. This does not
meet the requirements of NFPA 99 for
master alarms. Refer to Figure 5. for
wiring digital display modules as master
alarms.
Pressure
/Vacuum
Data Output
Pressure
/vacuum
data input
Wiring Schematic: Remote Pressure/Vacuum Transmission
Ten- w i re ribb o n c abl e
to adjacent module
Ten- w i re ribb o n c abl e
to adjacent module
Twenty-wire ribbon cable to
digital display module chassis

+
+
Schematic 5. Digital Display Modules As Master Alarms
Digital display module
interconnect board
Digital display module
interconnect board
NOTE:
Two MEGA sensor modules are required to
meet NFPA 99 requirements when using
digital display modules as master alarms.
MEGA Sensor Modules
Ten- w i re ribb o n
cable to adjacent
module
Twenty-wire ribbon cable to
digital display module chassis
Ten- w i re ribb o n
cable to adjacent
module
Twenty-wire ribbon cable to
digital display module chassis
19
Part No. 6-847681-00 Rev. D
Wiring Schematic: Digital Display Modules As Master Alarms

J3
SCREWDRIVER TO DEPRESS
USE SMALL FLAT BLADE
8
18
1
231955
P-B ASSY
INTERCONNECT CABLE
MULTI-SIGNAL MODULE
MADE IN THE USA
CABLE
BUSS
PANEL
HEADER
BUSS
PANEL
INPUTS
H
C
T
I
W
S
ALARM
DC/AC
2A 30V
RATING
RELAY
SIGNAL
EXT
3A
NO
COM
NC
EARTH GROUND
6
54
3
2
1
COM
COM
COM
COM
COM
COM 7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
TERMINAL BLOCK 2
TERMINAL BLOCK 1
F1
J1 J2
8
12345678
87
654321
+
+
+
+
+
+
J3
SCREWDRIVER TO DEPRESS
USE SMALL FLAT BLADE
8
18
1
231955
P-B ASSY
INTERCONNECT CABLE
MULTI-SIGNAL MODULE
MADE IN THE USA
CABLE
BUSS
PANEL
HEADER
BUSS
PANEL
INPUTS
H
C
T
I
W
S
ALARM
DC/AC
2A 30V
RATING
RELAY
SIGNAL
EXT
3A
NO
COM
NC
EARTH GROUND
6
54
3
2
1
COM
COM
COM
COM
COM
COM 7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
TERMINAL BLOCK 2
TERMINAL BLOCK 1
F1
J1 J2
8
12345678
87
654321
+
+
+
+
+
+
+
COM
+
COM
+
COM
+
COM
COM
COM
+
+
20 Part No. 6-847681-00 Rev. D
Wiring Schematic: Multi-Signal Alarm Module
Schematic 6. Multi-Signal Alarm Module
NOTE:
Dry contact switches
activate alarms upon
opening (normally closed)
Multi-signal alarm module
interconnect board
Signal Switches
Wiring terminals accept up
to #14 AWG wire
Multi-signal alarm module
interconnect board
Ten- w i re
ribbon cable
to adjacent
module
Sixteen-wire
ribbon cable to
multi-signal alarm
module chassis
SIGNAL 1
SIGNAL 2
SIGNAL 3
SIGNAL 4
SIGNAL 5
SIGNAL 6