Dsc Meridian mn-220 series User manual

detector for two

secondstoresetthe

detector to normal.

If the smoke

detector does not

function properly,

call your Smoke

Detector Installer or

Dealer for service.

Smoke Sensitivity

maybemeasuredin

a correlated UL268

or CAN/ULC S529-

M87 smoke box. DSC will conduct this test for a nominal charge. If a

returned unit is found outside of its marked sensitivity range, DSC will

clean and restore the unit’s sensitivity to its marked range.

Smoke sensitivity of installed detectors can be measured without

removalwiththeGeminiModel501AerosolSmokeDetectorAnalyzer.

Follow the instructions supplied with the instrument. Start with the

sensitivitycorresponding tothe lowestmarked detectorsensitivity; no

alarm should be indicated. Reset with the highest sensitivity setting;

an alarm should then be indicated. These results indicate that the unit

is within its marked sensitivity range. Other settings can be tried to

bracket the detector’s sensitivity to a narrower sensitivity range, such

as may be important during annual tests to quantify any change over

time.

Owner’s Maintenance Instructions

The Meridian Smoke Detector is designed to require a minimum of

maintenance. If the case becomes dusty, wipe the case gently with

asoft drycloth. If thecaseisgreasy,wipe thecase gentlywith asoft

cloth slightly dampened with soapy water.

Never disassemble the smoke detector; there are no user

serviceable parts inside the unit. Never paint the unit, as paint

may prevent smoke from entering the unit. If you are planning

renovationsor repainting,contactyour Installerandask thatthe

unit be temporarily removed until work is complete.

If the unit is located in an area where it is exposed to high levels of

dust or insects and is found to cause false alarms, it may require

service; contact your Smoke Detector Installer or Dealer.

Guidelines for Locating Smoke Detectors

On smooth ceilings, detectors may be spaced 9.1m (30 feet) apart

as a guide. Other spacings may be required depending on ceiling

height, air movement, the presence of joists, uninsulated ceilings,

etc. Consult National Fire Alarm Code NFPA 72, CAN/ULC-S553-

M86 or other appropriate national standards for installation

recommendations.

Do not locate smoke detectors at the top of peaked or gabled

ceilings; the dead air space in these locations may prevent the unit

from detecting smoke.

Avoid areas with turbulent air flow, such as near doors, fans or

windows. Rapid air movement around the detector may prevent

smoke from entering the unit.

Do not locate detectors in areas of high humidity.

Do not locate detectors in areas where the temperature rises above

38oC (100oF) or falls below 5oC (41oF).

Normally, light pulses in the Smoke Chamber

do not reach the light sensor

Smoke in the Smoke Chamber deflects light

into the light sensor, triggering an alarm.

scattered by the smoke and is reflected into the sensor. When

enough light is detected by the sensor, an alarm is activated. On

alarm, the Alarm Indicator Light will come ON and the Detector will

send an alarm signal to the control panel. The Auxiliary Relay, if

equipped,is alsoactivated onalarm.

When the smoke clears from

the chamber, the detector will remain latched in the alarm state

untilresetbyturningoffthepowersupplyfromthecontrolpanel.

Units with the Temperature Sensor (T) option will activate an

AlarmIndicatorLightandauxiliaryrelaytoinitiateanalarmatthe

control panel also. When the high heat condition returns to

normal, the detector will remain latched in the alarm state until

reset from the control panel. Resetting is achieved by 2 seconds

of power down.

Alarm Indications

Condition Alarm LED Aux Relay

No Smoke or Heat Pulse every Deactivated

40 s

Smoke or Heat ON steady Activated

Sensitivity Test ON Activated

Functioning Normally Steady

Sensitivity Test Pulse every Deactivated

Insufficient Sensitivity 40 s

No Smoke or Heat ON Activated

but Latched in Alarm steady

Limitations of Smoke Detectors

WhiletheMeridian SmokeDetectorhasbeendesignedforreliability,

it is important to know that all smoke detectors have limitations.

• Smoke detectors will not work without power. Devices powered

from a control panel will not function if the control panel’s AC and

battery backup power supplies both fail.

• Smoke detectors can only generate an alarm when smoke gets

inside the Smoke Chamber; anything that prevents smoke from

enteringtheSmokeChambermaypreventordelayanalarm. Refer

to the Guidelines for Locating Smoke Detectors on this Instruction

Sheet; it is important that smoke detectors be located on at least

every floor of the premises, preferably in every room. It is also

important to avoid obstructions, such as closed doors, that may

prevent smoke from reaching the unit. A smoke detector will not

detect a fire in the walls, in the chimney or on the roof of a building

until smoke enters the Smoke Chamber.

• Smoke detectors have certain obvious limitations: they may not

provideprotectionforsomeonesmokinginbed,forchildrenplaying

with matches, or for sudden and violent explosions. A smoke

detectorisasinglepartofoverallfiresafetyprecautions;thesmoke

detector should never be seen as a substitute for a complete fire

safety program.

READ THIS INSTRUCTION SHEET THOROUGHLY BEFORE

INSTALLING AND USING YOUR MERIDIAN SMOKE DETECTOR

Features

• Advanced 90° photoelectric detection pattern and specially

designed smoke chamber

∗∗

∗

for superior detection and dust

resistance

• Unique high signal-to-noise ratio and superior RFI immunity to

prevent false alarms

• Excellent smoke access provides reliable detection for all

smoke flow directions and velocities

• Solid-state LED red Indicator Light

• Optional auxiliary relay Form C

• 57°C (135°F) fixed temperature heat sensor option

• Magnet-activated Sensitivity Test Switch

• Attractive styling for any decor

• This symbol on the nameplate means that the product is

listedbyUnderwritersLaboratoriesInc.(ULStandard268,

Smoke Detectors for Fire Protective Signalling Systems.)

∗∗

∗

Protected under Canadian patent No. 1452296. Other patents pending.

Models

MN220 2-Wire Detector

MN220T 2-Wire Detector and Fixed Temp 57oC (135oF) Sensor

MN220R 2-Wire Detector and Auxiliary Form “C” Relay

MN220RT 2-Wire Detector and Auxiliary Form “C” Relay and Fixed

Temp 57oC (135oF) Sensor

Introduction

The DSC Meridian MN 220 Series Smoke Detectors are two-wire

smoke detectors intended for open area protection. They are suited

for commercial and institutional fire alarm systems.

TheDSCMeridian PhotoelectricSmoke Detectorincorporatesmany

advanced design features to provide years of reliable operation. It

is important to follow the Installation and Operation instructions on

this sheet to ensure that the unit will function properly — even the

best designed smoke detector will be rendered useless if it is not

connected or located properly.

Itisveryimportantthatyou understandhowto testandmaintain your

system. Refer to the Instruction or User Manual for your alarm

system, and familiarise yourself with how the Fire Alarm functions of

your system operate. Be sure to test your system regularly following

the test procedures described in your manual. If you should ever

have problems operating or testing your system, and especially if

thereareproblemswiththeFireAlarmfunctions,contactyourSmoke

Detector Installer or Dealer immediately for service.

Whilesmokedetectors andalarm systemsaredesigned towarn you

of potentially dangerous situations, no system can prevent

emergencies. An alarm system is not a substitute for life and

property insurance; you should always maintain appropriate

insurance coverage.

How the Smoke Detector Works

As shown in the illustration, a light source is directed across the

smoke chamber and is not normally reflected into the sensing

element. When smoke enters the chamber, the light beam is

SmokedetectorsshouldalwaysbeinstalledinaccordancewithNFPA72,the

National Fire Alarm Code. Smoke detectors should always be located in

accordance with Paragraph 2.1.1.1 of NFPA 72, Chapter 2.:

“2-2.1.1.1 Smoke detectors shall be installed outside of each separate

sleeping area in the immediate vicinity of the bedrooms and on each

additional story of the family living unit, including basements and excluding

crawl spaces and unfinished attics. In new construction, a smoke detector

also shall be installed in each sleeping room.”

Photoelectric

Sm oke Detector

INSTRUCTIONS FOR

INSTALLATION AND USE

MN-220 SERIES 2-WIRE SMOKE DETECTORS

Bedroom Bedroom

Basement

Living

Room Dining

Room

NEVER

HERE

Acceptable

here

Top of detector

acceptable here

12"

(0.3m)

Max.

(0.1m)

Max.

(0.1m)

Ceiling

Wall

NOTE: Measurements shown are to

the closest edge of the detector.

Figure 2

Bedroom

Living

Room

Kitchen

Dining

Room

Family Room

Figure 1

Bedroom Bedroom

Bedroom

Living Room

Kitchen

Figure 4Figure 3

Fire Safety In The Home

Most fires occur in the home, and to minimize this danger, it is

recommended that a household fire safety audit be conducted and

a family escape plan be developed.

Household Fire Safety Audit

1 Areallelectricalappliancesandoutletsinasafecondition? Check

for frayed cords, overloaded lighting circuits, etc. If you are

uncertain about the condition of your electrical appliances or

household service, have a professional evaluation.

2 Are all flammable liquids stored safely in closed containers in a

cool, well ventilated area? Cleaning with flammable liquids should

be avoided.

3 Are hazardous materials such as matches out of the reach of

children?

4 Are furnaces and wood burning appliances properly installed,

clean and in good working order? If in doubt, have a professional

evaluation.

Family Escape Planning

There is often very little time between the detection of a fire and the

time it becomes deadly. Because of this, it is very important that a

family escape plan be developed and rehearsed.

Testing Your Smoke Detector

Test the detector for minimum sensitivity by activating the test feature.

To test the unit, hold the test magnet against the case as shown. The

AlarmIndicatorLightwillcomeON,theAuxiliaryRelay(ifequipped) will

be activated, and the alarm control panel should indicate a fire alarm.

When the magnet is removed, the Alarm Light and Auxiliary Relay will

remain ON. Turn off the voltage supply from the control panel to the

detector for two

secondstoresetthe

detector to normal.

If the smoke

detector does not

function properly,

call your Smoke

Detector Installer or

Dealer for service.

Smoke Sensitivity

maybemeasuredin

a correlated UL268

or CAN/ULC S529-

M87 smoke box. DSC will conduct this test for a nominal charge. If a

returned unit is found outside of its marked sensitivity range, DSC will

clean and restore the unit’s sensitivity to its marked range.

Smoke sensitivity of installed detectors can be measured without

removalwiththeGeminiModel501AerosolSmokeDetectorAnalyzer.

Follow the instructions supplied with the instrument. Start with the

sensitivitycorresponding tothe lowestmarked detectorsensitivity; no

alarm should be indicated. Reset with the highest sensitivity setting;

an alarm should then be indicated. These results indicate that the unit

is within its marked sensitivity range. Other settings can be tried to

bracket the detector’s sensitivity to a narrower sensitivity range, such

as may be important during annual tests to quantify any change over

time.

Owner’s Maintenance Instructions

The Meridian Smoke Detector is designed to require a minimum of

maintenance. If the case becomes dusty, wipe the case gently with

asoft drycloth. If thecaseisgreasy,wipe thecase gentlywith asoft

cloth slightly dampened with soapy water.

Never disassemble the smoke detector; there are no user

serviceable parts inside the unit. Never paint the unit, as paint

may prevent smoke from entering the unit. If you are planning

renovationsor repainting,contactyour Installerandask thatthe

unit be temporarily removed until work is complete.

If the unit is located in an area where it is exposed to high levels of

dust or insects and is found to cause false alarms, it may require

service; contact your Smoke Detector Installer or Dealer.

Guidelines for Locating Smoke Detectors

On smooth ceilings, detectors may be spaced 9.1m (30 feet) apart

as a guide. Other spacings may be required depending on ceiling

height, air movement, the presence of joists, uninsulated ceilings,

etc. Consult National Fire Alarm Code NFPA 72, CAN/ULC-S553-

M86 or other appropriate national standards for installation

recommendations.

Do not locate smoke detectors at the top of peaked or gabled

ceilings; the dead air space in these locations may prevent the unit

from detecting smoke.

Avoid areas with turbulent air flow, such as near doors, fans or

windows. Rapid air movement around the detector may prevent

smoke from entering the unit.

Do not locate detectors in areas of high humidity.

Do not locate detectors in areas where the temperature rises above

38oC (100oF) or falls below 5oC (41oF).

Normally, light pulses in the Smoke Chamber

do not reach the light sensor

Smoke in the Smoke Chamber deflects light

into the light sensor, triggering an alarm.

scattered by the smoke and is reflected into the sensor. When

enough light is detected by the sensor, an alarm is activated. On

alarm, the Alarm Indicator Light will come ON and the Detector will

send an alarm signal to the control panel. The Auxiliary Relay, if

equipped,is alsoactivated onalarm.

When the smoke clears from

the chamber, the detector will remain latched in the alarm state

untilresetbyturningoffthepowersupplyfromthecontrolpanel.

Units with the Temperature Sensor (T) option will activate an

AlarmIndicatorLightandauxiliaryrelaytoinitiateanalarmatthe

control panel also. When the high heat condition returns to

normal, the detector will remain latched in the alarm state until

reset from the control panel. Resetting is achieved by 2 seconds

of power down.

Alarm Indications

Condition Alarm LED Aux Relay

No Smoke or Heat Pulse every Deactivated

40 s

Smoke or Heat ON steady Activated

Sensitivity Test ON Activated

Functioning Normally Steady

Sensitivity Test Pulse every Deactivated

Insufficient Sensitivity 40 s

No Smoke or Heat ON Activated

but Latched in Alarm steady

Limitations of Smoke Detectors

WhiletheMeridian SmokeDetectorhasbeendesignedforreliability,

it is important to know that all smoke detectors have limitations.

• Smoke detectors will not work without power. Devices powered

from a control panel will not function if the control panel’s AC and

battery backup power supplies both fail.

• Smoke detectors can only generate an alarm when smoke gets

inside the Smoke Chamber; anything that prevents smoke from

enteringtheSmokeChambermaypreventordelayanalarm. Refer

to the Guidelines for Locating Smoke Detectors on this Instruction

Sheet; it is important that smoke detectors be located on at least

every floor of the premises, preferably in every room. It is also

important to avoid obstructions, such as closed doors, that may

prevent smoke from reaching the unit. A smoke detector will not

detect a fire in the walls, in the chimney or on the roof of a building

until smoke enters the Smoke Chamber.

• Smoke detectors have certain obvious limitations: they may not

provideprotectionforsomeonesmokinginbed,forchildrenplaying

with matches, or for sudden and violent explosions. A smoke

detectorisasinglepartofoverallfiresafetyprecautions;thesmoke

detector should never be seen as a substitute for a complete fire

safety program.

READ THIS INSTRUCTION SHEET THOROUGHLY BEFORE

INSTALLING AND USING YOUR MERIDIAN SMOKE DETECTOR

Features

• Advanced 90° photoelectric detection pattern and specially

designed smoke chamber

∗∗

∗

for superior detection and dust

resistance

• Unique high signal-to-noise ratio and superior RFI immunity to

prevent false alarms

• Excellent smoke access provides reliable detection for all

smoke flow directions and velocities

• Solid-state LED red Indicator Light

• Optional auxiliary relay Form C

• 57°C (135°F) fixed temperature heat sensor option

• Magnet-activated Sensitivity Test Switch

• Attractive styling for any decor

• This symbol on the nameplate means that the product is

listedbyUnderwritersLaboratoriesInc.(ULStandard268,

Smoke Detectors for Fire Protective Signalling Systems.)

∗∗

∗

Protected under Canadian patent No. 1452296. Other patents pending.

Models

MN220 2-Wire Detector

MN220T 2-Wire Detector and Fixed Temp 57oC (135oF) Sensor

MN220R 2-Wire Detector and Auxiliary Form “C” Relay

MN220RT 2-Wire Detector and Auxiliary Form “C” Relay and Fixed

Temp 57oC (135oF) Sensor

Introduction

The DSC Meridian MN 220 Series Smoke Detectors are two-wire

smoke detectors intended for open area protection. They are suited

for commercial and institutional fire alarm systems.

TheDSCMeridian PhotoelectricSmoke Detectorincorporatesmany

advanced design features to provide years of reliable operation. It

is important to follow the Installation and Operation instructions on

this sheet to ensure that the unit will function properly — even the

best designed smoke detector will be rendered useless if it is not

connected or located properly.

Itisveryimportantthatyou understandhowto testandmaintain your

system. Refer to the Instruction or User Manual for your alarm

system, and familiarise yourself with how the Fire Alarm functions of

your system operate. Be sure to test your system regularly following

the test procedures described in your manual. If you should ever

have problems operating or testing your system, and especially if

thereareproblemswiththeFireAlarmfunctions,contactyourSmoke

Detector Installer or Dealer immediately for service.

Whilesmokedetectors andalarm systemsaredesigned towarn you

of potentially dangerous situations, no system can prevent

emergencies. An alarm system is not a substitute for life and

property insurance; you should always maintain appropriate

insurance coverage.

How the Smoke Detector Works

As shown in the illustration, a light source is directed across the

smoke chamber and is not normally reflected into the sensing

element. When smoke enters the chamber, the light beam is

SmokedetectorsshouldalwaysbeinstalledinaccordancewithNFPA72,the

National Fire Alarm Code. Smoke detectors should always be located in

accordance with Paragraph 2.1.1.1 of NFPA 72, Chapter 2.:

“2-2.1.1.1 Smoke detectors shall be installed outside of each separate

sleeping area in the immediate vicinity of the bedrooms and on each

additional story of the family living unit, including basements and excluding

crawl spaces and unfinished attics. In new construction, a smoke detector

also shall be installed in each sleeping room.”

Photoelectric

Sm oke Detector

INSTRUCTIONS FOR

INSTALLATION AND USE

MN-220 SERIES 2-WIRE SMOKE DETECTORS

Bedroom Bedroom

Basement

Living

Room Dining

Room

NEVER

HERE

Acceptable

here

Top of detector

acceptable here

12"

(0.3m)

Max.

(0.1m)

Max.

(0.1m)

Ceiling

Wall

NOTE: Measurements shown are to

the closest edge of the detector.

Figure 2

Bedroom

Living

Room

Kitchen

Dining

Room

Family Room

Figure 1

Bedroom Bedroom

Bedroom

Living Room

Kitchen

Figure 4Figure 3

Fire Safety In The Home

Most fires occur in the home, and to minimize this danger, it is

recommended that a household fire safety audit be conducted and

a family escape plan be developed.

Household Fire Safety Audit

1 Areallelectricalappliancesandoutletsinasafecondition? Check

for frayed cords, overloaded lighting circuits, etc. If you are

uncertain about the condition of your electrical appliances or

household service, have a professional evaluation.

2 Are all flammable liquids stored safely in closed containers in a

cool, well ventilated area? Cleaning with flammable liquids should

be avoided.

3 Are hazardous materials such as matches out of the reach of

children?

4 Are furnaces and wood burning appliances properly installed,

clean and in good working order? If in doubt, have a professional

evaluation.

Family Escape Planning

There is often very little time between the detection of a fire and the

time it becomes deadly. Because of this, it is very important that a

family escape plan be developed and rehearsed.

Testing Your Smoke Detector

Test the detector for minimum sensitivity by activating the test feature.

To test the unit, hold the test magnet against the case as shown. The

AlarmIndicatorLightwillcomeON,theAuxiliaryRelay(ifequipped) will

be activated, and the alarm control panel should indicate a fire alarm.

When the magnet is removed, the Alarm Light and Auxiliary Relay will

remain ON. Turn off the voltage supply from the control panel to the

™

Field Test.................................. Magnet-activated switch and/or

...................................... Gemini 501 Smoke Alarm Analyser**

Smoke Detector Mounting Plate

When wiring is completed, inspect the wiring and correct any errors

before applying power to the unit. When the wiring has been

thoroughly reviewed, neatly insert the wires into the electrical box

and secure the unit to the mounting plate.

For Information and Technical Assistance:

Digital Security Controls Ltd.

1645 Flint Road

Downsview, Ontario, Canada M3J 2J6

Phone: (416) 665 8460

Fax: (416) 665 7498

Mounting

Holes

Locking Tab

THIS SIDE OUT

Form C Aux. Relay wires

dress through this opening

Power and Form A Relay wires

dress through this opening

functions of the alarm control system and any equipment, such as

smoke detectors, connected to it. The user should be provided with

all Instruction Sheets and Manuals for their system and any

components connected to it. Complete and thorough instruction for

the user is essential to ensure they will obtain the greatest benefit

from their system. Providing the user with complete operational

information will also benefit the Installer through a reduction in

service calls for nuisance alarms.

Limited Warranty

Digital Security Controls Ltd. warrants that for a period of twelve

months from the date of purchase, the product shall be free of

defects in material and workmanship under normal use and that in

fulfilment of any breach of such warranty, Digital Security Controls

Ltd. shall, at its option, repair or replace the defective equipment

upon return of the equipment to its repair depot. This warranty

appliesonly todefectsinpartsand workmanshipandnot todamage

incurred in shipping or handling, or damage due to causes beyond

control of Digital Security Controls Ltd. such as lightning, excessive

voltage, mechanical shock, water damage, or damage arising out of

abuse, alteration or improper application of the equipment.

The foregoing warranty shall apply only to the original buyer, and is

and shall be in lieu of any and all other warranties, whether express

orimpliedandofallotherobligationsorliabilitiesonthepartofDigital

Security Controls Ltd. This warranty contains the entire warranty.

Digital Security Controls Ltd. neither assumes, nor authorizes any

otherpersonpurportingtoactonitsbehalftomodifyortochangethis

warranty,nortoassumeforitanyotherwarrantyorliabilityconcerning

this product.

Innoevent shallDigitalSecurityControls Ltd.beliablefor anydirect,

indirect or consequential damages, loss of anticipated profits, loss

of time or any other losses incurred by the buyer in connection with

the purchase, installation or operation or failure of this product.

WARNING

DigitalSecurityControlsLtd.recommendsthattheentiresystem

becompletelytestedonaregularbasis.However,despitefrequent

testing, and due to but not limited to, criminal tampering or

electrical disruption, it is possible for this product to fail to

perform as expected.

Smoke detectors that are a part of this system may not properly

alert occupants of a fire for a number of reasons, some of which

follow.Thesmokedetectorsmayhavebeenimproperlyinstalled

or positioned. Smoke may not be able to reach the smoke

detectors, such as when the fire is in a chimney, walls or roofs,

or on the other side of closed doors. Smoke detectors may not

detect smoke from fires on another level of the residence or

building.

Every fire is different in the amount of smoke produced and the

rate of burning. Smoke detectors cannot sense all types of fires

equally well. Smoke detectors may not provide timely warning

of fires caused by carelessness or safety hazards such as

smoking in bed, violent explosions, escaping gas, improper

storage of flammable materials, overloaded electrical circuits,

children playing with matches or arson.

Even if the smoke detector operates as intended, there may be

circumstances when there is insufficient warning to allow all

occupants to escape in time to avoid injury or death.

1 Every family member should participate in developing the escape

plan.

2 Study the possible escape routes from each location within the

house.Sincemany firesoccuratnight,specialattentionshould be

given to the escape routes from sleeping quarters.

3 It is essential that escape from a bedroom be possible without

opening the interior door. Consider the following when making

your escape plans:

• Make sure that doors and windows that open to the outside are

easilyopened. Ensurethat theyarenotpaintedshut, andthat their

locking mechanisms operate smoothly.

• If opening the exit or using the exit is too difficult for children, the

elderly or handicapped, plans for rescue should be developed.

Thisincludesmakingsurethatthosewhoaretoperformtherescue

can promptly hear the fire warning signal.

• Iftheexitisabovethegroundlevel,anapprovedfireladderorrope

should be provided, as well as training in its use.

• Exits on the ground level should be kept clear. Be sure to remove

snow from exterior patio doors in winter; outdoor furniture or

equipment should not block exits.

• The family should have a predetermined assembly point where

everyone can be accounted for; for example, across the street or

at a neighbour’s house.

• Once everyone is out of the house, call the Fire Department.

• A good plan emphasizes quick escape. Do not investigate first or

attempt to fight the fire, and do not attempt to rescue belongings

or valuables as this takes up time. Once outside, do not re-enter

the house; wait for the Fire Department.

• Write the plan down and rehearse frequently so that should an

emergency arise, everyone will know what to do. Revise the plan

as conditions change; for example, when there are more or fewer

family members in the home, or if there are changes to the house.

• Make sure your fire warning system is operational by conducting

weekly tests. If you are unsure about system operation, contact

your Smoke Detector Installer or Dealer.

• Itisrecommended thatyoucontact yourlocal fire departmentand

requestfurtherinformationonhomefiresafetyandescapeplanning.

If available, have your local fire prevention officer conduct an in-

house fire safety inspection.

Installation Instructions

Specifications

Nominal Operating Voltage ......................12 - 24VDC or VFWR

Maximum Operating Voltage Range .................10 - 30VDC, or

.............................................................................. 10 - 26.4VFWR

Standby Current

@12V @24V

MN220 15µA 50µA

MN220T 25µA 60µA

MN220R 15µA 65µA

MN220RT 30µA 75µA

MN220 Series Compatiblity Identifier:............................. PS220

Compatible Control Units:

DSC PC5010 with compatibility identifier: ....................... PC5-1

Maximum no. of detectors per zone: ..................................... 30

Min. detector voltage/current

to operate relay (MN220R, MN220RT): ................. 7.5VDC/35mA

Auxiliary Relay Rating (Resistive)

Form C Relay...............................................2A at 30VDC / VAC

Temp Sensor.................................................... 57oC (135°F) fixed

Smoke Sensitivity....................2.0%/ft obscuration ±0.6%/ft (UL)

Operating Environment .......................0°C - 50°C (32°F - 100°F)

..................................................5% - 93% RH, non-condensing ** Gemini Scientific, 1122B Aster Ave., Sunnyvale, CA 94086 Tel: 408-554-0310

Dimensions

Wiring (bottom view)

2-Wire Detector System Wiring

Models: MN220

MN220T Models: MN220R

MN220RT

Installation Testing

When all connections are completed, apply power to the system as

describedinthecontrolpanel’sInstallationManual. Ifallconnections

are correct, there should be no alarm from any of the smoke

detectors. Ifanalarmoccurs,ensurethatthereisnotanactualalarm

condition. If there is no actual alarm, remove power from the system

and check all smoke detectors for correct wiring.

If no alarm occurs, test each smoke detector by holding the test

magnet against the case near the Alarm Indicator. Refer to the

illustration in the “Testing Your Smoke Detector” section of these

instructions.When the magnetis inplace, analarm willbeactivated:

the Alarm Indicator Light will come ON, the Auxiliary Relay will be

activated,andthe alarmcontrol panelwill indicatea firealarm. When

the magnet is removed, the detector will remain latched in the alarm

condition. To reset the detector, remove the power supplied by the

alarm control panel.

Installer’s Maintenance Instructions

Normally,theMeridianSmokeDetectorwillnotrequiremaintenance.

Iftheunitismountedinahigh dustenvironment,theinletareas ofthe

case may be vacuumed with a soft brush attachment.

Be sure to inform the user and their monitoring station when

maintenance of any sort is performed on the smoke detector or any

part of the alarm control system. Always test smoke detectors after

maintenance. If a smoke detector continues to generate nuisance

alarms even after vacuuming, return the unit to DSC for service.

Contact DSC at the address and number below to obtain a return

authorisation number before returning the unit.

Installer’s Responsibility to the User

Itisthe Installer’sresponsibility tothoroughly instruct theend userof

the system on the operation, testing and maintenance of their

system. The Installer should fully explain and demonstrate all

Mounting the Unit

The Meridian Smoke

Detector mounts to a

standard 4" octagonal

electrical box.

12 to 24V

or Full Wave Rectified

power must be supplied

fromaUL/ULC-listedalarm

controlunit. Wiringshould

be in accordance with the

appropriate national

electrical code and

applicable local codes.

Remove the mounting plate

from the case by pushing the locking tab and turning the mounting

plate counter-clockwise. Attach the mounting plate to the electrical

box (see diagram above for orientation).

THISEQUIPMENTSHOULDBEINSTALLEDINACCORDANCEWITH

THE NATIONAL FIRE PROTECTION ASSOCIATION’S STANDARD

72.(NationalFireProtectionAssociation,BatterymarchPark,Quincy,

MA 02269)

Wiring

Refer to the wiring diagrams on this installation sheet and those

provided in the Installation Manual of the alarm control panel being

used with the unit.

Before connecting the unit, prepare the wires from the electrical box

for connection; the wires should not be frayed or bent.

CAUTION: If the power connections are reversed, the unit will

notoperate. Theunitisprotectedagainstdamagefromincorrect

wiring.

CAUTION: FORSYSTEMSUPERVISION,DONOTUSELOOPEDWIRE

UNDER TERMINALS. BREAK WIRE RUN TO PROVIDE

SUPERVISION OF CONNECTIONS.

5.13"

131 mm

2.0"

51 mm

Test Button &

Alarm Indicator

29002397 R0

August1997