Medical Electronic Gas Alarm · 2019-08-24 · Part No. 6-847684-00 Rev. D01 Pg. 1 MEGA 2 Medical...

Part No. 6-847684-00 Rev. D01 Pg. 1

MEGA 2®

Medical Electronic Gas Alarm

Installation, Operation, and Maintenance Instructions

MAN 01-027

Andersen Medical Gas12 Place LafifitteMadisonville, LA 70447http://www.TheMedicalGas.com1-866-288-3783

2 Part No. 6-847684-00 Rev. D01

Table of Contents

IntroductionAlarm Modular Components...............................................................................4Definitions...........................................................................................................5Alarm Configuration............................................................................................6

Unpacking ..............................................................................................................7

Rough-In InstallationAlarm Panel Back Box Mounting........................................................................8Remote Sensor Back Box Mounting ..................................................................9Pipeline Connection

Sensor Module .............................................................................................9Pressure Switch..........................................................................................10

Wiring InstallationGeneral Requirements......................................................................................11Wire Type and Size ..........................................................................................11Wire Routing Inside The Alarm Panel ..............................................................11Determining Number Of Conductors ................................................................12Wiring Schematics............................................................................................13Alarm Wiring Examples ....................................................................................13

Finish InstallationLine Voltage Electrical Connection...................................................................27Front Panel Installation.....................................................................................27Sensor Installation

Remote Sensors.........................................................................................28Local Sensors.............................................................................................29

Remote Sensor Wiring .....................................................................................29Source Equipment Wiring.................................................................................30Field Wiring Cable Shield Grounding ...............................................................31Building Automation System Wiring

Multi-Signal Module Relays........................................................................32Digital Display Module High/Low Relays....................................................32Annunciator Module General Fault Relay ..................................................32Annunciator Module Auxiliary Relay (optional)...........................................32Johnson Controls METASYS® System......................................................33

Slave Panel Wiring ...........................................................................................33

3Part No. 6-847684-00 Rev. D01

Table of Contents

OperationStart-Up and Checking .....................................................................................34Set-Up Procedure

Digital Display Module................................................................................35Multi-Signal Module ....................................................................................38

Monitoring ModeDigital Display Module................................................................................40Multi-Signal Module ....................................................................................41

TestingDigital Display Module......................................................................................41Multi-Signal Module ..........................................................................................42Power Supply Module ......................................................................................43

Troubleshooting Guide ........................................................................................45

Replacement PartsFront Panel Components .................................................................................50Back Box Components.....................................................................................51Sensor Components.........................................................................................52Field Installation Kits.........................................................................................53

4 Part No. 6-847684-00 Rev. D01

Annunciator ModuleFeatures:• User interface

pushbuttons for alarmpanel TEST function,audible alarm MUTE

and set-up increase! and decrease ".

• Green alarm panelPOWER ON and redaudible alarm muteindicators.

• Audible alarm withvolume control.

• Network wiring terminals and testconnector.

• General fault relay that activates on anyalarm panel fault condition.

Alarm Modular Components

Introduction

Digital Display ModuleFeatures:• Digital LED readout

of system pressuresignal transmittedfrom sensor module.

• Adjustablebrightness of digitalLED readout.

• Individual LED’s indicate when systempressure/vacuum is HIGH (red), LOW(red), or NORMAL (green).

• Programmable high and low alarmthresholds.

• Adjustable audible alarm mute duration.• Individual high and low alarm dry-contact

relay outputs.• Can transmit pressure or vacuum signal to

another digital display module for remoteapplications.

• Can be networked to communicate with apersonal computer or Johnson ControlsMetasys® building automationsystem(using Metasys Integrator).

Multi-Signal ModuleFeatures:• Monitors up to five

normally closed dry-contact switchsignals.

• Separate indicatorsfor each of fivesignals for normal(green) or abnormal (red) conditions.

• Available (optional) with separate dry-contact relay outputs for each of fivesignals.

• Can be networked to communicate with apersonal computer or Johnson ControlsMetasys® building automation system(using Metasys Integrator).

Blank ModuleFeatures:• Reserves a space in

alarm panel forfuture expansion.

• Used to fill unusedalarm panel modulelocations.

5Part No. 6-847684-00 Rev. D01

Definitions

Area Alarm PanelAlarm panel that monitors medical gas andvacuum systems serving a specific area.

Auxiliary Fault Relay (optional)A single-pole double-throw dry-contact relayoutput located on annunciator module. Usedto activate a remote alarm or buildingmanagement system. The relay will activatewhenever ANY audible alarm on panel is inprogress. Pressing MUTE button onannunciator module deactivates relay untilaudible alarm is again reactivated. Relaycontact ratings are 2 A @ 30 VDC/0.5 A @125 VAC.

Dry-ContactAn electrical contact that is isolated orunconnected from any electrical source.

General Fault RelayA single-pole double-throw dry-contact relayoutput located on annunciator module. Usedto activate a remote alarm or buildingmanagement system. The relay will activatewhenever ANY audible alarm on panel is inprogress. Unlike Auxiliary Fault Relay,pressing MUTE button on annunciatormodule WILL NOT deactivate relay. TheGeneral Fault Relay will deactivate only afteralarm condition is corrected and alarm panelresumes normal status. Relay contact ratingsare 2 A @ 30 VDC/0.5 A @ 125 VAC.

LEDLight Emitting Diode

Local SensorsPressure/vacuum sensors that are mountedinside alarm panel box. The sensor rough-inmust be piped to medical gas/vacuumpipelines.

Master Alarm PanelAlarm panel that monitors medical gas andvacuum source equipment and main pipelines.

Remote SensorsPressure/vacuum sensors that are mountedoutside of alarm panel box. Sensor rough-insmay be mounted separately or ganged togethernear pressure/vacuum pipelines. Sensors mustthen be wired to alarm panel.

All MEGA2 alarm panels are factory pre-configured. The configuration of alarm panelvaries dependent upon customer’srequirements.Two sizes of alarm panels are available. Thesmall alarm panel (Figure 1) will accommodatean annunciator module with four alarmmodules. The large alarm panel (Figure 2) willaccommodate an annunciator module witheight alarm modules.

Figure 1: Four Module Panel

Figure 2: Eight Module Panel

Alarm Configuration

Introduction

6 Part No. 6-847684-00 Rev. D01

Alarm Configuration

Introduction

An alarm panel may consist of anycombination of digital display modules, multi-signal modules, or blank modules.

If alarm panel is configured with digital displaymodules, pressure/vacuum sensors will beincluded for connection to pressure/vacuumpipeline (except for 6-M2N).

Sensors may be located inside alarm panelrough-in box (local sensors) or outside alarmpanel rough-in box (remote sensors).

Local sensors must be connected topressure/vacuum pipelines via copper tubing(Figure 3). Remote sensor may be mountednear pressure/vacuum pipeline and then wiredto alarm panel (Figure 4).

The required alarm panel configuration may bespecified within the part number scheme asdescribed below:

Part Number Scheme:

6-M2 ? - ? ? ? ? ? ? ? ?

Figure 3: Local Sensors

Figure 4: Remote Sensors

1 2 3 4 5 6 7 8 Position within alarmpanel (Figures 1 and 2)

L = Local SensorsR = Remote SensorsN = No Sensors

(Slave Applications)

Designates type ofalarm panel componentfrom chart below

O OXYGEN D OXYGEN - 100 PSI X NITROUS OXIDE A MEDICAL AIR F MEDICAL AIR - 100 PSI 5 AIR (ISO) 7 LABORATORY AIR 2 O2-CO2 4 O2-He C CARBON DIOXIDE G CARBON DIOXIDE - 100 PSI 1 CO2-O2 3 He-O2 H HELIUM V VACUUM 6 VACUUM (ISO) 8 LABORATORY VAC W WAGD N NITROGEN 9 INSTRUMENT AIR

DIG

ITA

L D

ISPL

AY

MO

DU

LES

M MULTI-SIGNAL MODULE R MULTI-SIGNAL MODULE W/ RELAYS B BLANK

Sensor modules aremounted inside thealarm panel box

Copper tubes connect topressure/vacuumpipelines

Sensors have separatemounting boxes for mountingnear pressure/vacuumpipeline and then must bewired to alarm panel

Copper tubes connect topressure/vacuumpipelines NOTE:

When an alarm panel is ordered with either localor remote sensors, ALL sensors will either belocal or remote. Alarm panels with a combinationof local and remote sensors are not available.

NOTE:Alarm panel components in table above are listedin order of criticality. Unless otherwise specified,the most critical component will fill position one,the next less critical component will fill positiontwo, etc. etc.

7Part No. 6-847684-00 Rev. D01

Introduction

Alarm Configuration

Example: P/N 6-M2R-OAVB

Example: P/N 6-M2R-OXAVNWMM

Unpacking

1. Remove alarm panel back box fromshipping carton. Do not remove alarmfront panel (wrapped in anti-staticshipping bag).

2. If alarm panel is configured withremote sensors, remove sensorrough-in and mounting box from smallindividual boxes shipped within mainalarm panel shipping carton.

3. Store all other components notremoved in steps 1 and 2 insideshipping carton in a safe place forinstallation later.

4. Install back box and sensor rough-inas described in this manual.

8 Part No. 6-847684-00 Rev. D01

Rough-In Installation

The alarm panel back box will be one oftwo sizes. The height and depth of bothsize boxes are the same. Refer to Figure5 below for dimensions of both boxes.

If alarm panel is configured with digitaldisplay modules, sensor assemblies willbe included for connection topressure/vacuum pipeline.

Sensors may be located inside alarmpanel rough-in box (local sensors) oroutside alarm panel rough-in box (remotesensors).

If equipped with local sensors, coppertubes will extend from top of back box tobe connected to pressure/vacuumpipeline.

Figure 5: Alarm Panel Back Box Dimensions

Alarm Panel Back Box Mounting 1. Prepare a rough wall opening largeenough to accommodate alarm panelback box. Alarm panel back box musthave rigid vertical members forsupport on both left and right sides.Power to alarm panel shall enterthrough lower left or top left conduithole in back box.

2. Remove cardboard dust cover andinsert alarm panel back box into wallopening. Secure with fastenerssuitable for vertical supports as shownin Figure 6.

3. Mounting brackets on each side ofback box are adjustable and factorypreset for 5/8” thick drywall. Afterdrywall installation, front edge of backbox should be flush with finishedsurface of wall. If needed, make anynecessary bracket adjustments at thistime. Refer to Figure 7.

4. Reinstall cardboard dust cover.

Figure 6: Back Box Mounting

Two choices ofconduit holes forentrance of ACmains power

Small box - (four modules)

Large box - (eight modules)

top entryside entry

For top entry, removeshield for access.Reinstall shield afterconnection is made

9Part No. 6-847684-00 Rev. D01

Figure 7: Mounting Bracket Adjustment


Pipeline Connection

Figure 8: Remote Sensor Back Box

Sensor Module1. Braze copper extension tubes from

sensor rough-in to appropriatepressure/vacuum piping system dropsas shown in Figure 9. Brazeconnections per procedures requiredby NFPA 99 or CAN/CSA-Z305.1.Use appropriate measures to preventoverheating and damage to internalcomponents of sensor rough-inassemblies.

2. Perform standing pressure tests andcross connection tests as required byNFPA and CSA.

Loosen screws toadjust back box depth(same each side)

Four holes in back of box areprovided for surface mounting

Alarm panels ordered with remotesensors are provided with separate metalboxes for each sensor. Mount eachsensor box as follows:

1. Remove sensor rough-in frommounting box (Figure 8).

2. Using four mounting holes provided,attach box to a wall or other structuralsupport. (fasteners by others).

3. Reinstall sensor rough-in.

Rear conduit knockouts(either side) are recommend-ed for sensor wiring

Alarm Panel Back Box Mounting

Remote Sensor Back Box Mounting

10 Part No. 6-847684-00 Rev. D01


Pipeline Connection Pressure Switch

DISS (Diameter Index Safety System)connection kits are recommended for usewhen attaching pressure switches topressure/vacuum pipeline. To utilizethese kits, a 1/4-18 NPT female threadmust be provided in piping system. Allnecessary components are included ineach gas specific kit as shown in Figure10.

Figure 10: Pressure Switch Pipeline Connection

DISS Kit P/N Gas Service6-120004-10 Oxygen6-120004-11 Nitrous Oxide6-120004-12 Medical Air6-120004-13 Vacuum6-120004-14 Nitrogen6-120004-18 Instrument Air6-120004-19 Evac. (WAGD)6-120004-20 Carbon Dioxide6-120004-21 CO2/O26-120004-22 O2/CO26-120004-23 He/O26-120004-24 O2/He6-120004-25 Helium

To pipeline

To pressure switch

DISS malebody

with check

DISS nutand nipple

Figure 9: Sensor Pipeline Connection

Connectionshould be madeon top of pipe

Horiz. run of pipeline

Horiz. run of pipeline

Connectionshould be madeon top of pipe

REMOTE SENSOR

LOCAL SENSOR

11Part No. 6-847684-00 Rev. D01

Wiring Installation

• Power all alarms from life safetybranch of emergency power system asrequired by applicable standards.

• Protect all wiring from physicaldamage by raceways or conduit asrequired by applicable standards.

• Wire master panels directly toswitches or sensors as required byapplicable standards.

• Wiring runs should be made with colorcoded wire. Record color, signal, andsource of signal for each wiring lead toaid in connection of alarm finishcomponents.

• Avoid installing alarm panels nearradio transmitters, electrical motors, orswitchgear.

Figure 11: Wire Routing

General Requirements

Wire Type And Size

Wire Routing

Holes for entrance oflow voltage field wiring

All low voltage MEGA2 wiring must meetthe following criteria:

• Copper wire no smaller than 22 AWG.

• Circuit length not to exceed 5000 feet.

• Cable must be twisted pair shieldedtype. Multi-pair cables within onecommon shield are acceptable.

Two 7/8” holes are provided for entranceof AC mains power. One hole on lowerleft side and one hole on top left of alarmpanel back box. NO OTHER HOLESSHOULD BE PUNCHED OR USED. Ifhole on top left is used, remove shield foraccess. Reinstall shield after connectionis made.

Several additional 7/8” holes are providedon right side of top panel for entrance oflow voltage field wiring. Refer to Figure11.

Two choices ofconduit holes forentrance of ACmains power

top entry

side entry

For top entry, removeshield for access. Reinstallshield after connection ismade

12 Part No. 6-847684-00 Rev. D01

Wiring Installation

MEGA2 alarm panels can be ordered innumerous configurations. The followingrules along with references to thismanual’s schematics clarify wiringrequirements.

• All alarm panels require 100 to 250VAC 50/60 Hz. power. Refer toWiring Schematic 1 (Pg. 14).

• Sensor modules sendpressure/vacuum signals to digitaldisplay modules. If the alarm panelconfiguration contains digital displaymodules and sensor modules that areremotely mounted, two conductors arerequired between EACH sensormodule and digital display module. Asensor module can not be wired tomore than one digital display module.Refer to Wiring Schematic 2 (Pg. 15).

• Multi-signal modules monitor signalsfrom dry normally closed switch/relaycontacts. These signals can originateat source equipment or from pressureswitches mounted on mainpressure/vacuum pipelines. When twomaster alarms are required, the sameswitch/relay contacts can be wired toboth alarm panels. Two conductorsare required for each alarm panel foreach signal. That is, for any givensignal, two wires will route to firstalarm panel and another two wires willroute to second panel. Both pairs ofwires will originate from switch/relaycontacts. This wiring is duplicated foreach source equipment/pressureswitch signal. Refer to WiringSchematics 3 and 8 (Pgs. 16 and20).

Determining Number Of Conductors • Two panels may be connectedtogether so digital display modulepressure reading(s) of first panel willbe duplicated at second panel. Twoconductors for EACH digital displaymodule must be routed from firstalarm panel to second alarm panel.Refer to Wiring Schematic 4 (Pg. 17).

• If an alarm panel is to be connected toa Johnson Controls METASYS®system, two conductors must beconnected between alarm panel’sannunciator module and monitoringsystem’s two-wire data bus. Refer toWiring Schematic 9 (Pg. 21).

• Most building automation systems arecapable of monitoring dry normallyclosed relay contacts. If alarm panelis to be connected to this type ofbuilding automation system, twoconductors must be routed from alarmpanel to building automation systemfor each signal monitored. Refer toWiring Schematics 5,6, and 7 (Pgs.18 and 19).

13Part No. 6-847684-00 Rev. D01

Wiring Schematics Alarm Wiring Examples

Wiring Installation

The wiring schematics listed below areprovided. Call BeaconMedæs at 1-888-4MEDGAS (1-888-463-3427), for technicalsupport .

1. Power Supply Module

2. Sensor Module to Digital DisplayModule

3. Multi-Signal Module

4. Remote Pressure/VacuumTransmission

5. Multi-Signal Module Relays

6. General Fault/Auxiliary Relays

7. Digital Display Module High/Low Relays

8. Remote Pressure/Vacuum Switches

9. Johnson Controls METASYS®

Wiring examples of master/area alarms forthe following systems are provided:

1. Two master alarm panels with digitaldisplays - high-pressure manifold/noreserve (oxygen shown) - Pg. 22.

2. Two master alarm panels with digitaldisplays - liquid manifold/high-pressurereserve (oxygen shown) - Pg. 23.

3. Two master alarm panels with digitaldisplays - liquid bulk/liquid reserve(oxygen shown) - Pg. 24.

4. Two multi-signal master alarm panels -duplex air compressor and vacuumpump systems - Pg. 25.

5. Area alarm panel - gas services foroxygen, medical air, and vacuum - Pg.26.

14 Part No. 6-847684-00 Rev. D01

Wiring Schematic 1: Power Supply Module

Annunciator Module

20-wire ribbon cableto adjacent module

20-wire ribbon cableto adjacent module

Power SupplyFuse Holder

Ground (green)

Line (black)

Neutral (white)

3-wire power supply harness

120V

AC

Mai

ns P

ower

Con

nect

ions

GroundScrew

Red

Orange

Black

Red

Orange

Black

15Part No. 6-847684-00 Rev. D01

Wiring Schematic 2: Sensor Module to Digital Display Module

Digital Display Module

Digital Display ModuleRemote sensor mounting box

(remote from alarm panel)

Local sensor(inside alarm panel back box)

2-pin polarized connector

2-pin polarized connector

ribbon toadjacentmodule

LOCAL SENSOR

REMOTE SENSOR


* Sensor pigtail

Sensor pigtail(provided)

Wire nuts

Field wiring(by others)

* NOTE:Sensor pigtails for local sensorsare factory connected to digital dis-play module.

Pin 5 - red (+)Pin 6 - black (-)

Pin 5 (+)Pin 6 (-)

NOTE:Field wiring cable shields must be grounded atonly one end, inside alarm panel back box. Referto page 31 for details.

16 Part No. 6-847684-00 Rev. D01

Wiring Schematic 3: Multi-Signal Module

SIGNAL 1

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

Dry normally-closedcontacts at sourceequipment or linepressure switches

COM +

COM +

COM +

COM +

COM +



Pin 1Pin 10 Pin 1Pin 10

Multi-Signal Moduleat FIRST master alarm

panel

Multi-Signal Moduleat SECOND master alarm panel

SIGNAL 1 - pin 1 (+), pin 2 (COM)





NOTE:Installer assigns source signals to desired front panel locationsand installs provided labels (Refer to Figure 23, page 31).

Multi-Signal Module front panel


17Part No. 6-847684-00 Rev. D01

Wiring Schematic 4: Remote Pressure / Vacuum Transmission

Digital Display Moduleat master alarm panel

Digital Display Moduleat slave alarm panel

Signal fromsensor module

Pin 5 (+)Pin 6 (-)

Master outputto slavePin 4 (-) / Pin 3 (+)

Slave inputfrom masterPin 1 (+)Pin 2 (-)



NOTE:The above master to slave wiring configuration DOES NOT comply with NFPA 99wiring guidelines for two required master panels. In order to comply, EACH mas-ter panel must be directly connected to a Sensor Module for each pressure/vacu-um service. Additional panels, if desired, may be connected as indicated above.


18 Part No. 6-847684-00 Rev. D01

Wiring Schematic 5: Multi-Signal Module Relays (Optional)

SIGNAL 1

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

Dry normally-closedcontacts at sourceequipment or linepressure switches

COM +

COM +

COM +

COM +

COM +

Multi-Signal Moduleribbon toadjacentmodule

SIGNAL 1 - pins 1 & 2





Dry normally-closed outputrelay contacts

NOTE:Output relay contacts are dry normally closed type. Contacts openupon designated alarm activation. Contacts remain open untilalarm condition is corrected. Alarm mute DOES NOT affect relaycondition. Relay contact ratings are 2 A @ 30 VDC/0.5 A @ 125 VAC.


19Part No. 6-847684-00 Rev. D01

Wiring Schematic 6: General Fault / Auxiliary Relays

Wiring Schematic 7: Digital Display Module High / Low Relays

Annunciator Module



General Fault Relay

N/C (pin 5)

N/O (pin 3)Common (pin 4)

N/O (pin 6)Common (pin 7)

N/C (pin 8)

Auxiliary Relay NOTE:General Fault Relay activates when ANYalarm on panel is in progress. PressingMUTE on Annunciator Module DOESNOT reset relay. Relay deactivates whenalarm condition is corrected.

Auxiliary Relay (optional) activates whenANY audible alarm on panel is in progress.Pressing MUTE on Annunciator ModuleWILL deactivate relay until audible alarm isagain reactivated.

Relay contact ratings are 2A @ 30 VDC/0.5A @ 125 VAC.


Low Alarm Relay

N/C (pin 8)Common (pin 7)N/C (pin 10)

Common (pin 9)

High Alarm Relay NOTE:High Alarm Relay activates when high linepressure alarm on digital display module isin progress. When relay activates normallyclosed contacts open. Pressing MUTE on Annunciator Module DOES NOT deacti-vate relay. Relay deactivates when high linepressure alarm condition is corrected.

Low Alarm Relay activates when low linepressure alarm on digital display module isin progress. When relay activates normallyclosed contacts open. Pressing MUTE on Annunciator Module DOES NOT deacti-vate relay. Relay deactivates when low linepressure alarm condition is corrected.

Relay contact ratings are 2A @ 30 VDC/0.5A @ 125 VAC.

20 Part No. 6-847684-00 Rev. D01

Wiring Schematic 8: Remote Pressure / Vacuum Switches

P/N 6-129020-01 (Dual switch for medical gases with 50 PSI nominal pressure)

P/N 6-129021-01 (Dual switch for medical gases with 175 PSI nominal pressure)

P/N 6-129022-01 (Single switch for vacuum)

1/4 NPT female port

1/4 NPTfemale port

seven - approx. 18” free leadsthrough 3/4” conduit connection

terminal strip1/2” conduitconnection

groundscrew

low

high

adjustmentdialshigh

low high

yello

wbr

own*

oran

ge*

purp

le*

red*

blue

(N/C

)

(N/C

)

(N/O

)

(N/O

)

(C)

(C)

NOTE:Switch contacts shown with50 PSI pressure applied.

Low switch ispreset at 40 PSI.

High switch is preset at 60PSI.

*Wires/contacts to be used with MEGA2 alarm system

adjustmentscrews

NOTE:Switch contacts shown with 20inHg vacuum applied.

Low switch ispreset at 12 inHg.

gree

ngr

ound

low low high

yello

wbr

own*

oran

ge*

purp

le*

red*

blue

(N/C

)

(N/C

)

(N/O

)

(N/O

)

(C)

(C)

NOTE:Switch contacts shown with 175PSI pressure applied.

Low switch ispreset at 140 PSI.

High switch is preset at 190 PSI.


1/4 NPT female port

four - approx. 18” free leadsthrough 3/4” conduit connection

low

adjustmentdial


low

purp

le*

red*

blue

(N/C

)

(N/O

)

(C)

gree

ngr

ound

P/N 0208-5096-300 (Single switch for medical gases with 175 PSI nominal pressure)

1/4 NPT male port

three - approx. 12” free leadsthrough 1/2” NPT conduit connection

adjustmentsleeve

NOTE:2 Switches Required.

Switch contacts shownwith 175 PSI pressureapplied.

Switch is preset at 195PSI increasing.

Installer must set lowswitch to 140 PSIdecreasing.


low

purp

le*

red*

blue

(N/C

)

(N/O

)

(C)

high

purp

le*

red

blue

*(N

/C)

(N/O

)

(C)

21Part No. 6-847684-00 Rev. D01

Wiring Schematic 9: Johnson Controls METASYS®

Johnson ControlsMETASYS® orcompatible buildingautomation system(Metasys Integrator)

Serial +

Serial -

Annunciator Module of each alarm panelconnected to the network shown above

Serial + (pin 1)Serial - (pin 2)

NOTE:Maintain correct network wiring polarity.

22 Part No. 6-847684-00 Rev. D01

Typical Master/Area Alarm Wiring Examples

MAIN LINE

MAIN LINE

O2 SecondarySupply

O2 SecondarySupply

MASTER ALARM PANEL #1


OxygenSensorModule

OxygenSensorModule



Multi-Signal Module

Multi-Signal Module

pin 1 (+)

pin 2 (com) pin 1 (+)

pin 5 (+)pin 6 (-)

pin 5 (+)pin 6 (-)

pin 2 (com)

Connected to mainoxygen pipeline


Normally-closed contacts athigh-pressure oxygen manifold

Example 1: Two master alarm panels with digital displays -high-pressure manifold/no reserve (oxygen shown).

NOTE:Switch contacts must be dry,normally-closed type. Alarmactivates when contacts open.

Com

23Part No. 6-847684-00 Rev. D01



MAIN LINE

MAIN LINE

O2 SecondarySupply

O2 ReserveIn Use

O2 ReserveLow

O2 SecondarySupply

O2 ReserveIn Use

O2 ReserveLow

OxygenSensorModule


pin 5 (+)pin 6 (-)


OxygenSensorModule


Multi-Signal Module

Multi-Signal Module

pin 6 (com)

pin 5 (+)pin 6 (-)

pin 1 (+)


Secondary Supply -from liquid O2 manifold

Com

Com

Compin 6 (com) pin 1 (+)

Reserve In Use -from liquid O2 system

Reserve Low -from liquid O2 HP back-up


Example 2: Two master alarm panels with digital displays -liquid manifold/high-pressure reserve (oxygen shown).


24 Part No. 6-847684-00 Rev. D01



MAIN LINE

OxygenSensorModule

OxygenSensorModule



Multi-Signal Module

Multi-Signal Module

pin 1

pin 5 (+)pin 6 (-)

pin 5 (+)pin 6 (-)

pin 1



Example 3: Two master alarm panels with digital displays -liquid bulk/liquid reserve (oxygen shown).


MAIN LINE

O2 ReserveIn Use

O2 Main TankLiquid Low

O2 ReserveLiquid Low

O2 Reserve TankPressure Low

O2 ReserveIn Use

O2 Main TankLiquid Level Low

O2 ReserveLiquid Level Low

O2 Reserve TankPressure Low

Main Tank Liquid Low -from main bulk tank

Com

Com

Com

Reserve In Use -from bulk O2 system

Com

Res. Tank Pressure Low -from reserve bulk tank

Res. Tank Liquid Low -from main bulk tank


25Part No. 6-847684-00 Rev. D01

BA

CD

EF

GH

IJ

K

L

M

N

ABCDEFGHIJ

KLMN

Example 4: Two multi-signal master alarm panels -duplex air compressor and vacuum pump systems.

O

P

Q

R

OPQR


Med. Air LinePressure LowMed. Air LinePressure High

Med. AirCO High

Med. AirDew Point High

Med. AirLag Compressor

Air Comp.High Temp.

Low LineVacuum

Lag VacuumPump

Vacuum PumpHigh Temp.

Med. Air LinePressure LowMed. Air LinePressure High

Med. AirCO High

Med. AirDew Point High

Med. AirLag Compressor

Air Comp.High Temp.Low LineVacuum

Lag VacuumPump

Vacuum PumpHigh Temp.

LOW

HIGH

com

com

n/c - not used

n/c

n/o

n/o - not used

Multi-Signal Module

Multi-Signal Module

Multi-Signal Module

Multi-Signal Module

Med. Air Line Pressure Switch -connected to main med. air pipeline

High Dew Point -from air comp. panel

High Carbon Monoxide -from air comp. panel

Air Compressor Lag -from air comp. panel

High Temp. # 2 -from air comp. panel

High Temp. # 1 -from air comp. panel

LOWcom

n/c - not used

n/o

High Temp. # 2 -from vac pump panel

High Temp. # 1 -from vac pump panel

Vacuum Pump Lag -from vac pump panel



Vacuum Line Pressure Switch -connected to main vacuum pipeline

26 Part No. 6-847684-00 Rev. D01

Example 5: Area alarm panel - gas services foroxygen, medical air, and vacuum.

I. C. U.

I. C. U.

I. C. U.

OxygenSensorModule


Med. AirSensorModule

Connected to mainmed. air pipeline

VacuumSensorModule

Connected to mainvacuum pipeline

Oxygen Digital Display Module

Med. Air Digital Display Module

Vacuum Digital Display Module

pin 5 (+)pin 6 (-)

pin 5 (+)pin 6 (-)

pin 5 (+)pin 6 (-)



27Part No. 6-847684-00 Rev. D01

Front Panel Installation

Finish Installation

1. Remove front panel assembly fromanti-static shipping bag.

2. Remove two front panel hingemounting screws and lanyard mountingscrew from alarm panel back boxassembly (Figure 13).

3. Attach front panel hinge and lanyard toalarm panel back box using screwsremoved in step 2 as shown in Figure14. Large (8-module) back boxes usetwo lanyards, one on each side.

Figure 13: Front Panel Hinge and Lanyard Screws

Figure 14: Attach Front Panel and Lanyard

Line Voltage Electrical Connection

1. Remove four nuts from plastic powersupply shield.

2. Remove plastic shield from powersupply. The plastic shield contains anin-line fuse holder that is wired to atwo-pin plug on left side of powersupply assembly. Remove two-pinplug from power supply.

3. The incoming line voltage hot andneutral wires should be connected viawire nuts to black (hot) and white(neutral) wires of power supply two-pinharness. Connect incoming groundwire to alarm box green ground wire.Refer to Figure 12.

4. Carefully position wires in bottom leftcorner of alarm panel box. Reconnecttwo-pin harness to power supply maleconnector. Harness connector iskeyed to prevent incorrect orientation,however, use care to ensure correctpin alignment.

5. Reinstall plastic power supply shieldwhile making sure all high voltagewires are contained within plasticshield.

6. Secure plastic shield with four nuts.

Figure 12: Line Voltage Connection

Hinge screwsLanyard screw

Power Supply

Fuse Holder

Neutral (white)

Line (black)

Ground (green)

28 Part No. 6-847684-00 Rev. D01

Finish Installation

4. The alarm panel’s power supply isfactory installed with a three-wireharness attached to its right side.Connect loose end of three wireharness to male connector onannunciator module circuit board asshown in Figure 15. The harnessconnector is keyed to prevent incorrectorientation, however, use care toensure correct pin alignment.

Figure 15: Power Supply Wire Harness

Remote Sensors:

1. Remove sensor module from shippingcarton. Each sensor module isshipped with a wiring pigtail that has atwo-pin polarized connector.

2. Wire nut pigtail to field installed wiringinside sensor mounting box. Notepolarity of wiring and correspondingfield wiring color or number for later.

3. Join polarized connector in sensormounting box to mating connector onsensor module. Refer to Figure 16.

4. Insert sensor into valve opening insensor rough-in. An indexing pinprovides for proper orientation andprevents gas service cross-connection. Push sensor all the wayin and secure with (2) #6-32 x 1-1/4”screws.

Figure 16: Sensor Module Connection

NOTE:Remove the blue protective netting from the sen-sor connector.

Sensor Installation

Annunciator Module

Power Supply

Three-wire harness

Front Panel Installation

Valve openingSensor

Polarizedconnector

Male connector

NOTE:Field wiring cable shields must be grounded atonly on one end, inside alarm panel back box.Refer to page 31 for details.

black

red

29Part No. 6-847684-00 Rev. D01

1. Identify each pair of field installedsensor wires inside alarm panel backbox assembly. Note polarity of eachwire from previously installed remotesensor module.

2. Route each pair of sensor wires asshown in Figure 18 to appropriatedigital display module. Each digitaldisplay module is labeled with the gastype. Verify the appropriate remotesensor wires are connected to correctdigital display module.

Finish Installation

5. Tuck excess wiring into open spacebehind sensor.

6. Mark location monitored by sensor inspace provided on sensor label. Referto Figure 17.

Local Sensors:1. Remove sensor module from shipping

carton.

2. Insert sensor into valve opening inpressure/vacuum service rough-in. Anindexing pin provides for properorientation and prevents gas servicecross-connection. Push sensor all theway in and secure with (2) #6-32 x 1-1/4” screws. Repeat this process forall sensors within alarm panel.

3. The digital display module(s) locatedon front panel assembly are factorywired with a harness and polarizedtwo-pin connector for each sensormodule. Each digital display moduleis labeled with the gas type. Matchgas type of each sensor to gas type ofeach digital display module and joinpolarized connectors of sensor anddigital display module harnesses.

4. Mark location monitored by sensor inspace provided on sensor label. Referto Figure 17.

Figure 17: Sensor Module Location Label

Remote Sensor Wiring

Figure 18: Remote Sensor Wire Routing

NOTE:Remove the blue protective netting from the sen-sor connector.

Location label

Holes provided forentrance of remote wiring

Route wires behindmetal brace

Sensor Installation

30 Part No. 6-847684-00 Rev. D01

1. Identify each pair of field installedsource equipment signal wires insidealarm panel back box assembly.

2. Route each pair of signal wires asshown in Figure 21 to appropriatemulti-signal module.

3. Connect each pair of signal wires todesired multi-signal module terminals.The terminals are labeled “Signal 1”through “Signal 5”. Signal 1corresponds to top row of indicatorson front panel of multi-signal module.Signal 5 corresponds to bottom row.Refer to Figure 22.

4. Insert appropriate source equipmentlabel into multi-signal module frontpanel as shown in Figure 23. A sheetof common source equipment signalshas been provided for convenience.Blank labels are also provided.

Finish Installation

Source Equipment Wiring

CAUTION:Source equipment signal wires must be connect-ed to normally-closed, dry contacts. No electricalvoltage can be present and contacts must beclosed during normal equipment operation. Whencontacts open, an alarm condition will be activat-ed.

NOTE:Each pair of terminals labeled on the multi-signalmodule connector is labeled “+” and “COM”.Ensure that when a source equipment dry contactis wired to two master panels, the same side ofthe dry contact is connected to the same terminalat both panels. For example, if the source equip-ment’s normally closed contact is wired to the “+”of the first master panel, ensure it is also connect-ed to the “+” terminal of the second master panel.

3. Connect positive sensor wire toterminal 5 and negative sensor wire toterminal 6 for each remote sensor anddigital display module. Refer to Figure19.

4. Blank digital display module locationlabels are provided so each digitaldisplay module may be identified witharea/zone that it is monitoring. Insertlocation labels (if desired) as shown inFigure 20.

Figure 19: Remote Sensor Wire Termination


From remote sensor

Pin 5 (+)Pin 6 (-)

Figure 20: Digital Display Module

Remote Sensor Wiring

Label(provided)

Slide label into slit infront panel overlay

31Part No. 6-847684-00 Rev. D01

Figure 23: Multi-Signal Front Panel Labeling

Finish Installation

Source Equipment Wiring

Figure 21: Source Equipment Wire Routing

Holes provided forentrance of remote wiring

Route wires behindmetal brace

Figure 22: Source Signal Wiring Termination

Multi-Signal Module

Signal 1

Signal 2

Signal 3

Signal 4

Signal 5

Sample label(provided)

Slide label(s) into slitsin front panel overlay

Field Wiring Cable Shield GroundingAll field wiring cable shields must begrounded inside alarm panel back box. Agrounding screw is provided in upper rightcorner of alarm back box as shown inFigure 24. Shields from several cablesmay be wrapped together and crimped intoone ring lug (by others) .

Figure 24: Field Wiring Cable Shield Grounding

Cable shieldgrounding screw

(crimp lug not provided)

CAUTION:Keep shield wires to ground screw as short aspossible so they can not touch front panel circuitboards when front panel is closed

32 Part No. 6-847684-00 Rev. D01

There are several methods of connectingMEGA2 alarm panels to a buildingautomation system depending upon whattype of information is required and whattype of building automation system isbeing used.

Multi-Signal Module Relays:As an option, mutli-signal modules maybe ordered with five output relays, one foreach of five signals that multi-signal iscapable of monitoring. Each relay has aset of dry, normally-closed contacts thatwill open when an alarm is activated oncorresponding front panel signal. Forexample, when an alarm conditionactivates on top multi-signal front panelalarm location (Signal 1), relay labeled“Signal 1” will activate opening itscontacts. Relay contacts will remain openas long as alarm condition is active, evenif audible alarm is silenced by MUTE button. When alarm condition iscorrected, relay contacts will close. Relaycontact ratings are 2 A @ 30 VDC/0.5 A @125 VAC. Refer to Schematic 5 (Pg. 18).

Digital Display Module High/LowRelays:Each digital display module is suppliedwith two separate output relays. Onerelay for high line pressure alarm andanother for low line pressure alarm.Each relay has a set of dry, normally-closed contacts that will open when analarm is activated on corresponding frontpanel signal. For example, when a lowpressure alarm condition activates ondigital display module front panel, relaylabeled “Low Relay” will activate, openingits contacts. Relay contacts will remainopen as long as alarm condition is active,even if audible alarm is silenced by MUTE

button.

Finish Installation

Building Automation System Wiring

When alarm condition is corrected, relaycontacts will close. Relay contact ratingsare 2 A @ 30 VDC/0.5 A @ 125 VAC.Refer to Figure Schematic 7 (Pg. 19).

Annunciator Module General Fault Relay:The annunciator module is supplied withan alarm panel general fault output relay.This relay has a set of dry contacts thatmay be wired either normally open ornormally closed. The relay will activatewhen ANY alarm on ENTIRE alarm panelis activated. Relay will remain activatedas long as alarm condition is active, evenif audible alarm is silenced by MUTE button. When alarm condition iscorrected, relay will deactivate. Relaycontact ratings are 2 A @ 30 VDC/0.5 A @125 VAC. Refer to Schematic 6 (Pg. 19).

Annunciator Module Auxiliary Relay:As an option, annunciator module may besupplied with an additional auxiliary relay.This auxiliary relay does not replacegeneral fault relay described above.Auxiliary relay has a set of dry contactsthat may be wired either normally open ornormally closed. Like general fault relay,auxiliary relay will activate when ANYalarm on ENTIRE alarm panel is initiated.Unlike general fault relay, auxiliary relaywill deactivate when audible alarm issilenced by MUTE button. If alarmcondition is still active when mute functioncancels, auxiliary relay will reactivate.Relay contact ratings are 2 A @ 30VDC/0.5 A @ 125 VAC. Refer toSchematic 6 (Pg. 19).

33Part No. 6-847684-00 Rev. D01

Finish Installation

Johnson Controls METASYS® System:The MEGA2 alarm panel is compatiblewith Johnson Controls METASYS®building automation system (UsingMETASYS® Integrator). Each MEGA2alarm panel is connected to a commontwo-wire RS-485 serial computer interfacebus. Two wires are connected to pins 1and 2 of annunciator module and thenconnected to common data bus. Refer toSchematic 9 (Pg. 21) for details. Eachdigital display module and multi-signalmodule within alarm panel is fieldprogrammed with a unique networkaddress. Using this address, JohnsonControls system can monitor alarm panelstatus including digital pressure readingsand programmed alarm set points.

Building Automation System WiringDigital display modules of two alarmpanels may be wired together in such away that pressure readings of first panelcan be duplicated at second panel. Eachdigital display module has RS-422 digitaloutputs and inputs. By connecting digitaloutput (master output) of first panel todigital inputs (slave input) of the secondpanel, second panel will duplicatepressure readings. Refer to Schematic 4(Pg. 17) for details.

Slave Panel Wiring

34 Part No. 6-847684-00 Rev. D01

Operation

Start-Up and Checking


Multi-Signal Module

Status LEDIndicators

LED Display

SIGNAL #1

SIGNAL #2

SIGNAL #3

SIGNAL #4

SIGNAL #5

Status LEDIndicators

NOTE:If any module appears to be malfunctioning, referto Troubleshooting Guide.

1. Turn on electrical power to alarmpanel.

2. Make following observations:• POWER ON light illuminates on

front of alarm panel.• Digital display and multi-signal

modules warm-up for ten seconds.During warm-up, no audible orvisual alarms activated. Afterwarm-up, audible and visualalarms are initiated for any activealarm.

3. Press MUTE button to silenceaudible alarm.

4. Pressurize piping system (medical gasand vacuum).

5. Make following observations:• Digital display modules display

actual pipeline pressures orvacuum levels.

• If digital display module pipelinepressures and vacuum levels arewithin pre-set limits, NORMALindicator is illuminated.

• If digital display module pipelinepressures and vacuum levels areoutside pre-set limits, statusindicators show HIGH or LOW.

• If a fault code is displayed (-- FF 11 --,-- FF 22 --, -- FF 33 -- or -- FF 44 --) refer toTroubleshooting Guide.

• Multi-signal modules indicatecurrent status from dry-contactswitches. Unused signals can bedisabled. Refer to Set-UpProcedure.

35Part No. 6-847684-00 Rev. D01

Operation

Set-Up Procedure

Digital display modules are shipped fromthe factory with the following settings:

Gas/Vacuum Alarm Set PointService Low HighPressure (50 psig) 40 psig 60 psigPressure (100 psig) 80 psig 120 psigNitrogen, Instr. Air 140 psig 190 psigVacuum/WAGD 12 in Hg. noneChanging units and alarm set points:1. Loosen two screws on front of alarm

panel. Hinge open alarm panel’s frontcover.

2. Locate SETUP button on circuit boardof digital display module to be adjust-ed.

3. Press and release SETUP button.Audible alarm will chirp and SS EE TT 11 willbe displayed.

4. Press and release TEST button onfront of alarm panel. Current unit ofmeasure will be displayed. Selectdesired unit of measure by pressingeither ! or " buttons. Available unitsof measure are:KK PP AA (kPa)PP SS II (psig)II NN KK 99 (in Hg)NN NN KK 99 (mm Hg)

5. Press and release TEST button. TheLOW indicator will illuminate and LL OOwill be displayed. After two secondscurrent low alarm setting will be dis-played. Select desired low alarm set-ting by pressing either ! or " but-tons. Low alarm setting ranges are:00 to 11 33 88 00 (11 77 22 55*) (kPa)00 to 22 00 00 (22 55 00*) (psig)00 to 33 22 (in Hg)00 to 88 00 00 (mm Hg)

*N2 and instrument air only, DDM firmware 1.0.6 or later


SETUPbutton

TESTbutton

Up and downbuttons

NOTE:Audible alarm will chirp with each button push.

If module is idle for more than one minute duringset-up procedure, module will chirp three times,return to monitor mode and will default to previ-ous settings. No changes to settings will besaved.

The set-up must be completed and the modulemust display DD OO NN EE in order for changes to besaved.

Low alarmindicator

High alarmindicator

Display


36 Part No. 6-847684-00 Rev. D01

Operation

Set-Up Procedure

6. Press and release TEST button.HIGH indicator will illuminate and KK ,,will be displayed. After two secondscurrent high alarm setting will be dis-played. Select desired high alarm set-ting by pressing either ! or " but-tons. High alarm setting ranges are:

00 to 11 33 88 00 (11 77 22 55*) (kPa)00 to 22 00 00 (22 55 00*) (psig)00 to 33 22 or NN OO NN EE (in Hg)00 to 88 00 00 or NN OO NN EE (mm Hg)

*N2 and instrument air only, DDM firmware 1.0.6 or later

7. Press and release TEST button tosave changes. DD OO NN EE will be dis-played for two seconds. Digital dis-play module will return to monitoringmode.

NN DD FF (network data format)Defines data word length transmitted tobuilding automation system. Userchoices are 88 (bits) or 11 66 (bits). Factorysetting is 88.

PP DD FF (pressure data format)Defines data word length transmitted toa slave alarm panel. User choices are88 (bits) or 11 66 (bits). Factory setting is 88.

The second advanced level, SS EE TT 33, isused to adjust other miscellaneousparameters as listed below:

SS EE RR UU (gas service identification)Used to set digital display module’s gasservice identification for communicationwith a digital sensor. User choices are:

00 22 (oxygen)NN 22 00 (nitrous oxide)AA ,, RR (medical air)UU AA (( (vacuum)NN 22 (nitrogen)LL AA ,, RR (lab air)LL UU AA (( (lab vacuum)AA RR 99 NN (argon) (DDM firmware 1.0.6 or later)

II AA ,, RR (instrument air)UU AA 99 DD (WAGD)(( 00 22 (carbon dioxide)(( -- 00 22 (CO2/O2)00 22 -- (( (O2/CO2)KK EE 00 22 (He/O2)00 22 KK EE (O2/He)KK EE (Helium)NN OO NN EE (none)

OO FF FF SS (display offset)Used to adjust digital module’s display.User choices are 00, 11, 22, -- 11, or -- 22 .Factory setting is 00.

Digital Display Module (Advanced)


Two additional levels of “advanced” set-upfeatures are available. The first advanced level, SS EE TT 22 , is used toadjust basic communication relatedparameters. The parameters adjustablewithin SS EE TT 22 are listed below:

AA DD DD RR (network address)A network address uniquely identifieseach digital display module to apersonal computer or Johnson ControlsMetasys® system. Address range is 00to 22 55 55. Factory setting is 00.

BB AA UU DD (baud rate)Used to set communication speed.User choices are 44 88 00 00 or 99 66 00 00.Factory setting is 44 88 00 00.

NOTE:Set to NN OO NN EE if using analog sensors.

37Part No. 6-847684-00 Rev. D01

RR EE PP TT (audible alarm repeat)Used to set time interval forreactivation of audible alarm afteralarm MUTE button has beenpressed. User choices are OO FF FF, 11, 55,11 55, 33 00 (minutes), 11 HH RR, 88 HH RR, 11 22 HH RR or22 44 HH RR (hour). Factory setting is OO FF FF.When set to OO FF FF, audible alarm willnot reactivate after an active alarmhas been silenced. Any new alarm willreactivate audible alarm.

II NN TT SS (display intensity)Used to adjust digital module’s displaybrightness. Factory setting ismaximum intensity.

Changing Communication Parameters - (SS EE TT 22):1. Press and HOLD SETUP button for

TWO seconds until SS EE TT 22 is displayed.2. Press and release TEST button on

front of alarm panel. AA DD DD RR will bedisplayed for one second and thencurrent network address. Selectdesired address by pressing ! or "buttons. Each module must have aunique address.

3. Press and release TEST button.BB AA UU DD will be displayed for one secondand then current baud rate. Selectdesired baud rate by pressing ! or" buttons.

4. Press and release TEST button. NN DD FFwill be displayed for one second and

Operation

Set-Up Procedure

NOTE:If module is idle for more than one minute duringset-up procedure, module will chirp three times,return to monitor mode and will default to previoussettings. No changes to settings will be saved.

Set-up must be completed and module must dis-play DD OO NN EE in order for changes to be saved.

then current network data format.Select desired data format bypressing ! or " buttons.

5. Press and release TEST button. PP DD FFwill be displayed for one second andthen current pressure data format.Select desired data format bypressing ! or " buttons.

6. Press and release TEST button tosave changes. DD OO NN EE will bedisplayed for two seconds. Digitaldisplay module will return tomonitoring mode.

Changing Miscellaneous Parameters - (SS EE TT 33):

1. Press and HOLD SETUP button forFOUR seconds until SS EE TT 33 isdisplayed.

2. Press and release TEST button onfront of alarm panel. SS EE RR UU will bedisplayed for one second and thencurrent gas service identification.Select desired gas service bypressing ! or " buttons.

3. Press and release TEST button.OO FF FF SS will be displayed for one secondand then current display offset. Selectoffset by pressing ! or " buttons.

4. Press and release TEST button.RR EE PP TT will be displayed for one secondand then current audible alarm repeattime. Select desired repeat time bypressing ! or " buttons.

5. Press and release TEST button. II NN TT SSwill be displayed. Select desireddisplay brightness by pressing ! or "buttons. Each push will changebrightness of display. Audible alarmwill chirp one time with each push andtwo times when limit reached.

6. Press and release TEST button tosave changes. DD OO NN EE will bedisplayed for two seconds. Digitaldisplay module will return tomonitoring mode.

Digital Display Module (Advanced)

38 Part No. 6-847684-00 Rev. D01

Operation

Set-Up Procedure

Multi-Signal Module

Changing signal options:1. Loosen two screws on front of alarm

panel. Hinge open front cover.2. Locate SETUP button on circuit board

of multi-signal module to be adjusted.3. Press and release SETUP button.

Audible alarm will chirp and bothgreen and red indicators for toplocation (Signal 1) will illuminate.

4. Using either ! or " buttons, enableor disable Signal 1 location. When redindicator is illuminated, location isENABLED. Turning off red indicatordisables location. Signal locations cannot be disabled if wired to a closed-contact circuit.

5. Press and release TEST button onfront of alarm panel. Both green andred indicators for second location(Signal 2) will be illuminated.

6. Using either ! or " buttons, enableor disable Signal 2 location. When redLED is illuminated, location is enabled.Turning off red LED disables location.

7. Repeat steps 5 and 6 above forremaining signal locations (Signal 3, 4,and 5).

8. Press and release TEST button tosave changes. LEDs will sweep fromtop to bottom to indicate end of set-upsequence has been reached. Multi-signal module will return to monitoringmode.

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

TESTbutton

Up and downbuttons

NOTE:Audible alarm will chirp with each button push.

If module is idle for more than one minute duringset-up procedure, module will chirp three times,return to monitor mode and will default to previ-ous settings. No changes to settings will besaved.

The set-up must be completed in order forchanges to be saved.

Multi-Signal Alarm Module Circuit Board

SETUPbutton

Green LEDRed LED

SIGNAL 1

39Part No. 6-847684-00 Rev. D01

Operation

Multi-Signal Module (Advanced)

Set-Up Procedure

Two additional levels of “advanced” set-upfeatures are available. The first level isused to adjust basic communicationrelated parameters. The second level isused to adjust alarm repeat time anddisplay intensity.

Setting Communication Parameters:A network address uniquely identifieseach multi-signal alarm module to apersonal computer or Johnson ControlsMetasys® system. Address range is 0 to255. Factory default setting is 0. Since amulti-signal alarm module does not havea digital display, network address isshown as a binary number on specific redand green front panel LED indicators.Table below assigns a numeric value toeach specific LED indicators. Forexample, if LED indicators for bits 0, 1, 2,and 3 were all illuminated, networkaddress would be 15 (1+2+4+8=15).

Binary data represented by LED indicatorsBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

128 64 32 16 8 4 2 1Numeric value of each bit

SIGNAL 1

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

Bit 4 (green)

Bit 0 (red)

Bit 1 (red)

Bit 2 (red)

Bit 3 (red)

Bit 5 (green)

Bit 6 (green)

Bit 7 (green)

1. Press and HOLD set-up button.Audible alarm will chirp when set-upbutton is first pushed and again twoseconds later. Release button aftersecond audible alarm chirp. Multi-signal alarm module front panel LEDindicators (Bit 0 through Bit 7) willshow current network address. If noindicators are illuminated, address is 0(factory setting).

2. Using either ! or " buttons, selectdesired network address between 0and 255.

3. Press and release TEST button onfront of alarm panel. Front panel LEDindicators (Bit 0 and Bit 4) will showcurrent communication baud rate. Ifonly Bit 4 LED is illuminated, baudrate is 4800 (factory setting). If BOTHBit 0 and Bit 4 LEDs are illuminated,baud rate is 9600.

4. Using either ! or " buttons, selectdesired baud rate (4800 or 9600).

5 Press and release TEST button onfront of alarm panel. Front panel LEDindicators (Bit 1 and Bit 5) will showcurrent communication data format. Ifonly Bit 5 LED is illuminated, dataformat is 8-bit word length (factorysetting). If BOTH Bit 1 and Bit 5 LEDsare illuminated, data format is 16-bitword length.

6. Using either ! or " buttons, selectdesired data format (8-bit or 16-bit).

7. Press and release TEST button tosave changes. LEDs will sweep fromtop to bottom to indicate end of set-upsequence has been reached. Multi-signal module will return to monitoringmode.

40 Part No. 6-847684-00 Rev. D01

Setting Audible Alarm Repeat Time andDisplay Intensity:Used to set time interval for reactivationof audible alarm after alarm MUTE button has been pressed. 1. Press and HOLD SETUP button.

Audible alarm will chirp when SETUPbutton is first pushed, again after twoseconds and a third time after fourseconds. Release button after thirdaudible alarm chirp. Multi-signalmodule front panel LED indicators willshow current audible alarm repeattime as shown below:Indicator Illuminated Repeat Time

None OFFSignal 1 - red 1 Min.Signal 2 - red 5 Min.Signal 3 - red 15 Min.Signal 4 - red 30 Min.Signal 1 - green 1 Hr.Signal 2 - green 2 Hr.Signal 3 - green 8 Hr.Signal 4 - green 12 Hr.Signal 5 - green 24 Hr.

2. Using either ! or " buttons, selectdesired audible alarm repeat time.

3 Press and release TEST button onfront of alarm panel. All LEDindicators will illuminate.

4. Select desired display brightness bypressing either ! or " buttons. Eachpush will increase or decreasebrightness of display. Audible alarmwill chirp one time with each buttonpush and two times when limit isreached.

5. Press and release TEST button tosave changes. LEDs will sweep fromtop to bottom to indicate end of set-upsequence. Multi-signal module willreturn to monitoring mode.

Operation

Set-Up Procedure Monitoring ModeMonitoring mode is the normal operatingmode of the MEGA2 system.

Digital Display Module:Digital display modules monitor pipelinepressure or vacuum.

• The LED display indicates pipelinepressure or vacuum.

• If piping pressure or vacuum level iswithin high and low alarm limits, greenNORMAL indicator is illuminated.

• If pressure or vacuum level drops to,or below, low alarm set-point, audiblealarm activates and red LOW indicatorflashes.

• If pressure or vacuum level rises to, orabove, high alarm set-point, audiblealarm activates and red HIGHindicator flashes.

• When front panel alarm MUTE button is pressed, audible alarm issilenced. Alarm indicator remainsilluminated, but does not flash.

• Visual indicator will remain illuminatedas long as alarm condition remains.

• If audible alarm repeat time has beenset, audible alarm will reactivate, andvisual indicator will again flash afterspecified time.

NOTE:Sensor faults will be displayed as -- FF 11 --, -- FF 22 --,-- FF 33 -- or -- FF 44 -- error codes. Refer to trou-bleshooting section for details.

Multi-Signal Module (Advanced)

41Part No. 6-847684-00 Rev. D01

Operation

Multi-Signal Module:

Multi-Signal modules monitor up to fivedry-contact switches.

• If the signal is normal (switch contactsclosed), green indicator for signal isilluminated.

• If an alarm occurs (switch contactsopen), audible alarm activates and redindicator for signal flashes.

• When front panel alarm MUTE button is pressed, audible alarm issilenced. Alarm indicator remainsilluminated, but does not flash.

• Visual indicator will remain illuminatedas long as alarm condition remains.

• If audible alarm repeat time has beenset, audible alarm will reactivate, andvisual indicator will again flash afterspecified time.

Monitoring Mode

SIGNAL 1

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

Testing

Digital Display Module:

Press and hold the front panel TEST but-ton for five seconds to initiate the followingsequence:

• Audible alarm sounds briefly as TT EE SS TT isdisplayed.

• All LED display segments and LOW,NORMAL, and HIGH indicators flash forfive seconds (firmware up to revision1.0.3).

• LED display segments and LOW,NORMAL, and HIGH indicators illuminatein sequence (firmware revision 1.0.4 andlater).

• Firmware revision (e.g. 11.. 00.. 66) is displayedfor two seconds.

• AA DD DD RR is briefly displayed and then currentMEGA network module address isdisplayed for two seconds. (Factory defaultaddress is 00).

• Current units of measure setting (e.g. PP SS II)is displayed for two seconds.

• LL OO is briefly displayed, LOW alarm indicatoris illuminated, and current low alarm setpoint is displayed for two seconds.

• KK ,, is briefly displayed, HIGH alarmindicator is illuminated, and current highalarm set point is displayed for twoseconds.

• Module returns to monitoring mode.

Front panelTEST button

Periodic testing of alarm system isrecommended. Digital display modulesand multi-signal alarm modules have built-in self-test modes. Front panel TESTbutton will initiate self-test mode on allalarm panel modules at same time.

42 Part No. 6-847684-00 Rev. D01

Testing

Multi-Signal Module:

Press and hold front panel TEST button forfive seconds to initiate following sequence:.

• Audible alarm sounds briefly.• All red and green indictors flash for five

seconds.• Software revision is displayed as

follows:- Expressed as a three digit number

(e.g. 1.0.2).- Each digit of number is displayed

separately for two seconds andseparated from the next digit by abrief flashing of all indicators.

- Each number is displayed in abinary code where each multi-signalmodule indicator has a binary value.

- Example: Software revision 1.0.2would be displayed as follows:• First digit is determined by two

second illumination of top leftindicator (bit 0 = number 1).

• All indicators quickly flash.• Second digit is determined to be

0 because no indicators areilluminated for two seconds.

• All indicators quickly flash.• Third digit of is determined by

two second illumination ofsecond left indicator (bit 1 =number 2).

• After all three digits of software revisionhave been displayed, all indicatorsilluminate for one second beforedisplaying current MEGA networkaddress.

• Current network address is displayedfor two seconds in a binary code whereeach multi-signal module indicator hasa binary value.

• All indicators illuminate for one secondand module returns to monitoringmode.

SIGNAL 1

SIGNAL 2

SIGNAL 3

SIGNAL 4

SIGNAL 5

Bit 4 (green)

Bit 0 (red)

Bit 1 (red)

Bit 2 (red)

Bit 3 (red)

Bit 5 (green)

Bit 6 (green)

Bit 7 (green)

Binary data represented by LED indicatorsBit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

128 64 32 16 8 4 2 1Numeric value of each bit

43Part No. 6-847684-00 Rev. D01

Testing

Power Supply Assembly:The power supply assembly converts ACmains power to +5 and +24 volts DC. ACmains power can be any value between100 and 250 volts AC. In order to verifypower supply assembly is functioningcorrectly, perform following procedure.

1. Loosen two front panel screws andopen alarm panel.

2. If no indicator lights or LED displaysare illuminated on front of alarmpanel, first verify internal fuse isgood (Figure 25). If fuse is good,continue this procedure.

3. Using a digital volt meter, measureDC voltage between black (-) andorange (+) wires where powersupply harness plugs intoannunciator module (Figure 26).When making measurements, donot disconnect cable fromannunciator board. Insert meterprobes into back of white plasticconnector.

4. Verify DC voltage is 4.5 to 5.5 volts.5. Measure voltage between black (-)

and red (+) wires.6. Verify DC voltage is 22.0 to 26.0

volts.7. If voltages above are not within

specification, verify correct AC inputpower as follows:

8. Remove four keps nuts and plasticshield from power supply. Do notdisconnect wires from fuse holder orharness from power supply.

9. Position plastic shield (wiresattached) so that power supply’s ACinput connector is accessible.

WARNING:RISK OF ELECTRIC SHOCK !USE EXTREME CAUTION -The remainder of this procedure requires removalof the clear plastic power supply shield. Even iffuse is removed, the high voltage input wiringremains energized.

10.Using a digital volt meter, measureAC voltage between white (neutral)and black (line) wires on back ofpower supply connector (Figure 27).Verify AC input voltage is 100 to 250volts.

11. If AC input voltage is withinspecification, replace power supplyassembly.

Figure 25: Alarm Panel Internal Fuse

Internal fuse holder

44 Part No. 6-847684-00 Rev. D01

Testing

Figure 26: Power Supply Output Testing

Figure 27: Power Supply AC Input Testing

Three-wire harnessfrom power supplyBlack (gnd)

Orange (+5) Red (+24)

Annunciator Module

Line (black)

Neutral (white)

Power Supply Assembly

FuseHolder

45Part No. 6-847684-00 Rev. D01

Troubleshooting Guide

Symptom Possible Cause Corrective Actiona. AC power is not turned on.b. Blown internal fuse.c. AC power wiring is not

connected.d. Three-wire power supply

harness is not connectedbetween power supply andannunciator board

e. Faulty power supplyassembly.

a. Check AC power source.b. Replace fuse.c. Check AC entrance wiring at power

supply terminals. Verify two-pinplastic connector is plugged intopower supply circuit board.

d. Check connections on each endincluding orientation of cableconnectors. Reconnect if necessary.

e. Replace power supply assembly.

1) No visual indicatorsilluminated on entire alarmpanel

a. 20-wire ribbon cable(s)between annunciator moduleand digital display or multi-signal modules notconnected.

b. Faulty 20-wire ribbon cable.c. Faulty digital display or multi-

signal module.d. Faulty annunciator module.

2) No visual indicatorsilluminated on isolatedmodule(s). Greenannunciator module POWERindicator is illuminated.

a. Reconnect ribbon cable(s).b. All alarm panels have two 20-wire

ribbon cables (attached toannunciator connectors “J1” and“J2”). Remove suspect cable (bothends) and replace with other cable. Ifproblem is corrected, replace faultycable.

c. If alarm panel contains anotherworking digital display or multi-signalmodule, unplug ribbon cable fromworking module and connect to non-working module. If module does notilluminate, replace faulty digitaldisplay or multi-signal module.

d. Replace faulty annunciator module.

3) Constant audible alarm thatcan not be silenced bypressing front panel MUTE

button. No visual alarmon any digital display ormulti-signal module.

a. Faulty digital display or multi-signal module.

b. Faulty 20-wire ribbon cable.c. Faulty annunciator module.

a. Disconnect digital display and/ormulti-signal modules one at a timefrom 20-wire ribbon cables. Ifdisconnecting a module cancelsaudible alarm, replace that faultymodule.

b. After all modules have beendisconnected from 20-wire ribboncables, disconnect each cable, one ata time from annunciator module. Ifdisconnecting ribbon cable cancelsalarm, replace that faulty cable.

c. If both 20-wire ribbon cables havebeen removed from annunciatormodule, and audible alarm has notcancelled, replace faulty annunciatormodule.

46 Part No. 6-847684-00 Rev. D01

6) Audible alarm does notsound when visual indicatoris illuminated. Pressing frontpanel MUTE buttoncauses visual indicator tostop flashing but remainilluminated.

a. 20-wire ribbon cable notconnected well toannunciator module or digitaldisplay/multi-signal modulewith visual alarm.

b. Faulty 20-wire ribbon cable.c. Faulty annunciator module.d. Faulty digital display or multi-

signal module.

a. Reconnect ribbon cable(s).b. All alarm panels will incorporate two

20-wire ribbon cables. Exchange cableconnected to affected module withother one (assuming all modulesconnected to that cable are workingcorrectly). If problem follows cable,replace cable.

c. Cause an alarm condition (byunplugging field wiring connector) onanother module that is connected tosame 20-wire ribbon cable. Verifyaudible alarm on this test moduleactivates. If audible alarm does notactivate, replace faulty annunciatormodule.

d. If audible alarm on test module (step c)activates, replace faulty digital displayor multi-signal module.


Symptom Possible Cause Corrective Action

5) Flashing visual indicator andaudible alarm on digitaldisplay or multi-signalmodule that can not besilenced by pressing frontpanel MUTE button.When MUTE button ispressed, visual indicatorcontinues to flash.

a. 20-wire ribbon cable notconnected well toannunciator module or digitaldisplay/multi-signal modulewith visual alarm.

b. Faulty 20-wire ribbon cable.c. Faulty annunciator module.d. Faulty digital display or multi-

signal module.

a. Reconnect ribbon cable(s).b. All alarm panels will incorporate two 20-

wire ribbon cables. Exchange cableconnected to affected module with otherone (assuming all modules connectedto that cable are working correctly). Ifproblem follows cable, replace cable.

c. Cause an alarm condition (byunplugging field wiring connector) onanother module that is connected tosame 20-wire ribbon cable. Verifyvisual indicators on this test modulestop flashing when MUTE button ispressed. If visual indicators continue toflash, replace faulty annunciatormodule.

d. If visual indicators on test module (stepc) stop flashing when MUTE buttonis pressed, replace faulty digital displayor multi-signal module.

4) Visual indicators are dimlyilluminated or vary inbrightness between one ormore digital display or multi-signal modules. Front panelgreen POWER indicator isilluminated brightly.

a. Programmable displayintensity levels have beenset too low or at differentvalues between modules.

b. Faulty digital display or multi-signal module.

a. Reset display intensity values foreach module. Refer to Set-Upinstructions pages 35 - 40.

b. Replace faulty module.

47Part No. 6-847684-00 Rev. D01


Symptom Possible Cause Corrective Action7) Audible alarm reactivates a

short period of time afterMUTE button has beenpressed.

a. A new alarm condition hasoccurred.

b. Programmable alarm repeatfunction has reactivatedaudible alarm.

a. If alarm condition previously silencedself-corrects and then reactivatesagain, alarm panel treats as a newalarm condition. Flashing visualindicators represent new alarmconditions. After being silenced,visual indicators will stop flashing, butremain illuminated.

b. Set alarm repeat value at desiredtime interval. Refer to Set-Upinstructions pages 35 - 40.

8) Audible alarm activates whenit should, but sound level istoo low.

a. Audible alarm volume is settoo low.

b. Faulty annunciator module.

a. Adjust alarm volume potentiometerlocated on annunciator moduleclockwise to increase. Factorydefault setting is max. clockwiseposition (max. volume).

b. Replace faulty annunciator module.

10)Multi-signal alarm will notactivate on either masteralarm when source contactsopen.

a. Correct field wiring. Verify commonwire of both master panels areconnected to same side of sourceequipment switch.

9) Multi-signal alarm will notactivate on one masteralarm when source contactsopen. Second master workscorrectly.

a. Field wiring misconnection.b. Faulty multi-signal module.

a. Correct field wiring. Verify multi-signal module is connected to correctsource equipment switch.

b. Replace multi-signal module.

11) One or more multi-signalalarms are in alarmcondition even though theyare not wired to sourceequipment.

a. Field wiring misconnection.

a. Unused signals have notbeen turned off.

a. Perform programming procedure inorder to turn off unused signals.Refer to Set-Up instructions pages35 through 40.

12)High or low pressure alarmactivated when digital dis-play indicates pressure orvacuum is within normal lim-its.

a. Alarm set-points have beenchanged.

b. Faulty digital display module.

a. Use digital display module test modeas described on page 41 to checkcurrent set-points. If incorrect,reprogram low and/or high alarm set-pints. Refer to Set-Up instructionspages 35 through 40.

b. Replace faulty digital display module.

48 Part No. 6-847684-00 Rev. D01

14)Low alarm with -- FF II -- displayon digital display module.

No pressure or vacuumsignal to digital displaymodule as a result of:a. Sensor wiring disconnected

or wiring polarity reversed.b. Faulty digital display module.c. Faulty sensor module.

a. Correct sensor wiring. If sensor ismounted remotely, verify field wiringcontinuity and polarity from sensor todigital display module connector pins5 (+) and 6 (-).

b. If alarm panel contains anotherworking digital display module,remove field wiring connector fromsuspect module and connect toworking (test) module. If test moduleprovides any reading other than -- FF II --, replace faulty digital display module.

c. If test module in step b above alsogives -- FF II --, replace faulty sensormodule.

15)Low alarm with -- FF 22 --display on digital displaymodule.

Pressure or vacuum signalto digital display module outof measurement range (toolow) as a result of:a. No pressure or vacuum in

pipeline.b. Faulty digital display module.c. Faulty sensor module.

a. Apply appropriate pressure orvacuum to pipeline.

b. If alarm panel contains anotherworking digital display module,remove field wiring connector fromsuspect module and connect toworking (test) module. If test moduleprovides any reading other than-- FF 22 --, replace faulty digital displaymodule.

c. If test module in step b above alsogives -- FF 22 --, replace faulty sensormodule.

13)Pressure or vacuum digitaldisplay does not matchpressure or vacuum levelsin pipeline.

a. Incorrect digital display “unitof measure”.

b. Faulty digital display module.c. Faulty sensor module.

a. Use digital display module test modeas described on page 41 to checkcurrent unit of measure (PSI, in Hg,kPa, mm Hg). If incorrect, reprogramunit of measure. Refer to Set-Upinstructions pages 35 through 40.

b. If alarm panel contains anotherworking digital display module,remove field wiring connector fromsuspect module and connect toworking (test) module. If test moduleprovides correct reading, replacefaulty digital display module.

c. If test module in step b above alsogives incorrect display, replace faultysensor module.



49Part No. 6-847684-00 Rev. D01



16)High alarm with -- FF 33 --display on digital displaymodule.

Pressure or vacuum signalto digital display module outof measurement range (toohigh) as a result of:a. Shorted sensor wiring.b. Faulty digital display module.c. Faulty sensor module.

a. Correct sensor wiring.b. If alarm panel contains another

working digital display module,remove field wiring connector fromsuspect module and connect toworking (test) module. If test moduleprovides any reading other than-- FF 33 --, replace faulty digital displaymodule.

c. If test module in step b above alsogives -- FF 33 --, replace faulty sensormodule.

17)High and low alarm with-- FF 44 -- display on digitaldisplay module.

Gas/vacuum servicemismatch between digitaldisplay module and digitalsensor module as a resultof:a. Sensor wired to wrong digital

display module.b. Digital display module

programmed with the wrongservice.

a. Correct sensor wiring.b. Program digital display module for

the correct gas/vacuum service.Refer to Set-Up instructions page 36.

18)No blinking LED on digitalsensor module.

No power to digital sensordue to:a. Faulty wiring.b. Faulty digital sensor module.

a. Correct sensor wiring.b. Replace digital sensor module.

19)Fast blinking LED on digitalsensor module.

Sensor out of range:a. Vacuum digital sensor

module connected topressure service.

b. Pressure digital sensormodule connected tovacuum service.

c. Faulty digital sensor module.

a. Verify piping connections. Vacuumsensor maximum overpressure: 30psi.

b. Verify piping connections.c. Replace digital sensor module.

50 Part No. 6-847684-00 Rev. D01

1

23

12

11

910

8

7

Replacement Parts

ITEM PART NUMBER DESCRIPTION1 6-868163-00 20-wire Ribbon Cable (4-module alarm box)- 6-868164-00 20-wire Ribbon Cable (8-module alarm box)

2 6-865315-00 Field Wiring Connector - Annunciator Module3 6-231982-00 Circuit Board - Annunciator Module (includes item 2)- 6-231982-RL Circuit Board - Annunciator Module with Auxiliary Relay

(includes item 2)

4 6-811611-00 Screw - #6-32 x 7/16”, Pan Head5 6-838104-00 Lanyard6 6-814669-00 Screw - #6-20 x 1/4”, Pan Head, Self-Tapping7 6-811752-00 Screw - #6-32 x 1-1/4”, Pan Head8 6-811058-00 Screw - #4-40 x 1/4”, Flat Head9 6-838982-00 Hinge10 6-231980-00 Circuit Board - Digital Display Module (includes item 12)- 6-231981-00 Circuit Board - Multi-Signal Module (includes item 12)- 6-231981-RL Circuit Board - Multi-Signal Module with Relays (includes item 12)

11 6-811608-00 Screw - #6-32 x 1/4”, Pan Head12 6-865316-00 Field Wiring Connector - Digital Display/Multi-Signal Module

4

6

5

Front Panel Components

51Part No. 6-847684-00 Rev. D01

Replacement Parts

Back Box Components

4

5

6

7

8

910

1112

13

14

15

16

18

17

1

ITEM PART NUMBER DESCRIPTION1 6-814669-00 Screw - #6-20 x 1/4”, Pan Head, Self-Tapping2 6-425458-00 Shield3 6-814669-00 Screw - #6-20 x 1/4”, Pan Head, Self-Tapping4 6-231938-00 Wire Harness - Power Supply Ground5 6-231941-00 Wire Harness - Ground6 6-814008-00 Screw - Grounding7 6-231937-00 Wire Harness - AC Input8 6-231939-00 Wire Harness - Fuse9 Included In Item 11 Nut - Fuse Holder10 6-616506-00 Shield - Power Supply11 6-865500-00 Fuse Holder12 6-865546-00 Fuse - 1.0 Amp, 250VAC, Time Delay13 Included In Item 11 Fuse Holder Cap14 6-827530-00 Nut - #6-32, Keps15 6-231936-00 Wire Harness - Power Supply DC Output16 6-829628-00 Standoff17 6-867540-00 Power Supply Assembly18 6-831904-00 Spacer

3

2

52 Part No. 6-847684-00 Rev. D01

Replacement Parts

Sensor Components

Applicable to both local and

remote sensor mounting

Remote sensor mounting only

1

2

9

6

7

4

5

ITEM PART NUMBER DESCRIPTION1 6-814669-00 Screw - #6-20 x 1/4”,

Pan Head, Self-Tap2 6-425428-00 End Cap3 Sensor Mounting Assy.

(incl. items 1,2,6,7& 9)- 6-129340-10 Oxygen- 6-129340-11 Nitrous Oxide- 6-129340-12 Medical Air- 6-129340-13 Vacuum- 6-129340-14 Nitrogen- 6-129340-16 Air (ISO)- 6-129340-17 Vacuum (ISO)- 6-129340-18 Instrument Air- 6-129340-19 WAGD- 6-129340-20 Carbon Dioxide- 6-129340-21 CO2/O2- 6-129340-22 O2/CO2- 6-129340-23 He/O2- 6-129340-24 O2/He- 6-129340-25 Helium- 6-129340-26 Lab Air- 6-129340-27 Lab Vacuum- 6-129340-28 O2 (100 PSI)- 6-129340-29 Air (100 PSI)- 6-129340-30 CO2 (100 PSI)

ITEM PART NUMBER DESCRIPTION4 6-231935-00 Sensor Pigtail5 Analog Sensor- 6-231760-00 Oxygen- 6-231761-00 Nitrous Oxide- 6-231762-00 Medical Air- 6-231763-00 Vacuum- 6-231764-00 Nitrogen- 6-231765-00 Helium- 6-231766-00 Lab Air- 6-231767-00 Lab Vacuum- 6-231768-00 Instrument Air- 6-231769-00 WAGD- 6-231770-00 Carbon Dioxide- 6-231771-00 CO2/O2- 6-231772-00 O2/CO2- 6-231773-00 He/O2- 6-231774-00 O2/He- 6-231776-00 Air (ISO)- 6-231777-00 Vacuum (ISO)- 6-231778-00 Oxygen (100PSI)- 6-231779-00 Air (100 PSI)- 6-231780-00 CO2 (100 PSI)6 6-814669-00 Screw - #6-20 x 1/4”,

Pan Head, Self-Tap7 6-425555-00 Mounting Box

3

8

53Part No. 6-847684-00 Rev. D01

ITEM PART NUMBER DESCRIPTION8 Digital Sensor- 6-232460-00 Oxygen- 6-232461-00 Nitrous Oxide- 6-232462-00 Medical Air- 6-232463-00 Vacuum- 6-232464-00 Nitrogen- 6-232465-00 Helium- 6-232466-00 Lab Air- 6-232467-00 Lab Vacuum- 6-232468-00 Instrument Air- 6-232469-00 WAGD- 6-232470-00 Carbon Dioxide- 6-232471-00 CO2/O2- 6-232472-00 O2/CO2- 6-232473-00 He/O2- 6-232474-00 O2/He- 6-232476-00 Air (ISO)- 6-232477-00 Vacuum (ISO)- 6-232478-00 O2 (100 PSI)- 6-232479-00 Air (100 PSI)- 6-232480-00 CO2 (100 PSI)

9 Console Rough-In- 6-233010-00 Oxygen

O2 (100 PSI)- 6-233011-00 Nitrous Oxide- 6-233012-00 Medical Air

Air (100 PSI)Lab Air

- 6-233013-00 VacuumLab Vacuum

- 6-233014-00 Nitrogen- 6-233016-00 Air (ISO)- 6-233017-00 Vacuum (ISO)- 6-233018-00 Instrument Air- 6-233019-00 WAGD- 6-233020-00 Carbon Dioxide

CO2 (100 PSI)- 6-233021-00 CO2/O2- 6-233022-00 O2/CO2- 6-233023-00 He/O2- 6-233024-00 O2/He

Field Installation Kits

ITEM PART NUMBER DESCRIPTION1 Digital Display Module- 6-290980-10 Oxygen- 6-290980-11 Nitrous Oxide- 6-290980-12 Medical Air- 6-290980-13 Vacuum- 6-290980-14 Nitrogen- 6-290980-16 Air (ISO)- 6-290980-17 Vacuum (ISO)- 6-290980-18 Instrument Air- 6-290980-19 WAGD- 6-290980-20 Carbon Dioxide- 6-290980-21 CO2/O2- 6-290980-22 O2/CO2- 6-290980-23 He/O2- 6-290980-24 O2/He- 6-290980-25 Helium- 6-290980-26 Lab Air- 6-290980-27 Lab Vacuum- 6-290980-28 O2 (100 PSI)- 6-290980-29 Air (100 PSI)- 6-290980-30 CO2 (100 PSI)

2 Multi-Signal Module- 6-290981-00 W/O Relays- 6-290981-RL W/ Relays

Field installation kits include everything required toreplace a blank module with a digital display mod-ule or a multi-signal module. Digital display modulekits include sensors.

NOTE:Before ordering replacement sensor, determinewhether faulty sensor is analog or digital type bypart number listed on sensor label.

Faulty sensors must be replaced with same type.

54 Part No. 6-847684-00 Rev. D01

Notes

55Part No. 6-847684-00 Rev. D01

Notes

Metasys is a trademark of Johnson ControlsMEGA is a trademark of BeaconMedæs

©2005 BeaconMedæs. All rights reserved.Part No. 847684-00 Rev. D01

Corporate Headquarters:

BeaconMedæs13325 Carowinds BoulevardCharlotte, NC 28273

Phone (704) 588-0854Fax (704) 588-4949

For technical support or toplace an order call:

1 888 4 MEDGAS(1-888-463-3427)

Fax (866) 635-3296www.beaconmedaes.com

BeaconMedæs warrants the MEGA2 MedicalElectronic Gas Alarm to be free of defects inmaterials or workmanship when installed andoperated in accordance with instructions. Thewarranty period is 30 months from shipment dateor 24 months from startup, whichever period ter-minates earlier.

This warranty covers all necessary parts andlabor required for correction of the defect whetherby any or all of repair, replacement, or credit,which election shall be made by Beacon at it’ssole discretion.

This warranty requires the owner to ensurethat the equipment is 1) started up or placed inservice by an authorized representative ofBeaconMedæs, 2) certified in accordance withNFPA 99, most recent edition, by a properly quali-fied certification agency, and 3) maintained instrict accordance with Operation and MaintenanceInstructions provided with the product.

Warranty claims will be honored only afterexamination by BeaconMedæs and only whensuch examination shall disclose toBeaconMedæs’ reasonable satisfaction that suchequipment has not been damaged in shipment orinstallation, improperly installed, operated outsideof any published operating limits (including but notlimited to temperature, pressure, humidity, or ven-tilation), improperly or inadequately maintained,field modified in any way, improperly repaired, orin any other way improperly applied or used.

All claims against this warranty require promptnotification, within the warranty period, of anyseeming defect. Failure to promptly notifyBeaconMedæs of the seeming defect will invali-date all warranties.

This warranty excludes damage or defectcaused by shipping, acts of God, fire, war, labordifficulties, action of government, or other causebeyond the reasonable control of BeaconMedæs.

This warranty is given in lieu of all other war-ranties, expressed or implied, including impliedwarranties of fitness for a particular purpose andmerchantability. In no event shall BeaconMedæsbe liable for damages in excess of the value ofthe defective product, nor shall BeaconMedæs beliable for any direct, special or consequentialdamages, loss of profit of any kind, or for loss ofuse of the products.

Warranty

MAN01-027

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