Mircom MIX-2251APA, MIX-2251TAPA, MIX-2251TMAPA Instruction Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

CAUTION

REMOTE ANNUNCIATOR

CAUTION: DO NOT LOOP WIRE

TENS ONES

25 Interchange Way,

MIX-2251APA, MIX-2251TAPA and MIX-2251TMAPA
Intelligent Photoelectric Smoke Sensors

SPECIFICATIONS

Operating Voltage Range: 15 to 32 VDC
Average operating Current: 300µA @ 24 VDC (one communication every 5 seconds with LED blink enabled)
Maximum Alarm Current (LED on:) 6.5 mA @ 24 VDC
Operating Humidity Range: 10% to 93% Relative Humidity, Non-condensing
Operating Temperature Range: 32°F to 120°F (0°C to 49°C) MIX-2251APA; 32°F to 100°F (0°C to 38°C) MIX-2251TAPA and MIX-2251TMAPA
Heat Sensor: 135°F Fixed Temperature Electronic Thermistor

Height: 2.0˝ (51 mm) installed in B210LPA Base
Diameter: 6.1˝ (155 mm) installed in B210LPA Base; 4.1˝ (104 mm) installed in B501 Base

Weight: 5.2 oz. (147 g)

BEFORE INSTALLING

This sensor must be installed in compliance with the control panel system
installation manual. The installation must meet the requirements of the Au­thority Having Jurisdiction (AHJ). Sensors offer maximum performance when
installed in compliance with CAN/ULC-S524.

GENERAL DESCRIPTION

Models MIX-2251APA, MIX-2251TAPA and MIX-2251TMAPA are plug-in
type smoke sensors that combine a photoelectronic sensing chamber with
addressable-analog communications. The sensors transmit an analog rep­resentation of smoke density over a communication line to a control panel.
Rotary-decade switches are provided for setting the sensor’s address.

Two LEDs on the sensor are controlled by the panel to indicate sensor status.
An output is provided for connection to an optional remote LED annuncia­tor (P/N RA400ZA/RA100ZA). Models MIX-2251TAPA and MIX-2251TMAPA
combine a photoelectronic sensing chamber and 135°F (57.2°C) fixed tem­perature heat detector.

The MIX-2251APA, MIX-2251TAPA and MIX-2251TMAPA require compat­ible addressable communications to function properly. Connect these
sensors to listed-compatible control panels only.

SPACING

Mircom recommends spacing sensors in compliance with CAN/ULC-S524. In
low air flow applications with smooth ceilings, space sensors 30 feet apart.
For specific information regarding sensor spacing, placement, and special
applications, refer to CAN/ULC-S524 or the System Smoke Detector Applica­tion Guide, available from Mircom.

ing shipping. Dust covers must be removed before the sensors can sense
smoke. Remove sensors prior to heavy remodeling or construction.

FIGURE 1. WIRING DIAGRAM:

+–

+

2

3

1

CONTROL PANEL

–

ULC LISTED COMPATIBLE

–
+

FIGURE 2. ROTARY DECADE ADDRESS SWITCHES:

OPTIONAL RETURN LOOP

7

8

6

9

5

4

3

2

1

10

11
12

13

14

15

0

Vaughan Ontario, L4K 5W3

Phone: [phone];

Fax: [phone]

UNDER TERMINAL 1 OR 2.
BREAK WIRE RUN TO PROVIDE
SUPERVISION OF CONNECTIONS.

2

3

1

C0100-01

7

8

6

5

9

4

3

2

1

0

WIRING GUIDE

All wiring must be installed in compliance with the Canadian Electrical Code,
applicable local codes, and any special requirements of the Authority Hav­ing Jurisdiction. Proper wire gauges should be used. The installation wires
should be color-coded to limit wiring mistakes and ease system troubleshoot­ing. Improper connections will prevent a system from responding properly in
the event of a fire.

Remove power from the communication line before installing sensors.

1. Wire the sensor base (supplied separately) per the wiring diagram, Figure

1.

2. Set the desired address on the sensor address switches, see Figure 2.

3. Install the sensor into the sensor base. Push the sensor into the base

while turning it clockwise to secure it in place.

4. After all sensors have been installed, apply power to the control unit and
activate the communication line.

5. Test the sensor(s) as described in the TESTING section of this manual.

Dust covers provide limited protection against airborne dust particles dur-

MC-400-006 1 I56-3319-000

C0146-00

TAMPER-RESISTANCE

Models MIX-2251APA, MIX-2251TAPA and MIX-2251TMAPA include a tam­per-resistant capability that prevents their removal from the bracket without
the use of a tool. Refer to the base manual for details on making use of this
capability.

TESTING

Before testing, notify the proper authorities that the system is undergoing

maintenance, and will temporarily be out of service. Disable the system to
prevent unwanted alarms.

All sensors must be tested after installation and periodically thereafter. Test­ing methods must satisfy the Authority Having Jurisdiction (AHJ). Sensors
offer maximum performance when tested and maintained in compliance with
CAN/ULC-S536.

The sensor can be tested in the following ways:

A. Functional: Magnet Test (P/N M02-04-01 or M02-09-00)

This sensor can be functionally tested with a test magnet. The test mag-

net electronically simulates smoke in the sensing chamber, testing the
sensor electronics and connections to the control panel.

1. Hold the test magnet in the magnet test area as shown in Figure 3.

2. The sensor should alarm the panel.

Two LEDs on the sensor are controlled by the panel to indicate sen-

sor status. Coded signals, transmitted from the panel, can cause the

CAUTION

LED

LED

SENSOR

OPTIONAL
THERMIST

(MIX-2251T
MIX-2251TMAP

LEDs to blink, latch on, or latch off. Refer to the control panel technical
documentation for sensor LED status operation and expected delay to
alarm.

B. Smoke Entry: Aerosol Generator (Gemini 501)

The GEMINI model 501 aerosol generator can be used for smoke entry

testing. Set the generator to represent 4%/ft to 5%/ft obscuration as de­scribed in the GEMINI 501 manual. Using the bowl shaped applicator,
apply aerosol until the panel alarms. Additionally, canned aerosol simu­lated smoke (canned smoke agent) may be used for smoke entry testing
of the smoke detector. Tested and approved aerosol smoke products are
the Smoke Detector Tester model 25S available from Home Safeguard
Industries. When used properly, the canned smoke agent will cause the
smoke detector to go into alarm. Refer to the manufacturer’s published
instructions for proper use of the canned smoke agent.

Canned aerosol simulated smoke (canned smoke agent) formulas will vary
by manufacturer. Misuse or overuse of these products may have long term
adverse effects on the smoke detector. Consult the canned smoke agent
manufacturer’s published instructions for any further warnings or caution
statements.

For MIX-2251TMAPA, smoke entry testing should be performed imme-

diately following the magnet test. Magnet test initiates an approximately
10 minute period when the detector’s signal processing software rou­tines are not active. Failure to first perform the magnet test will introduce
a time delay before the detector alarms.

C. Direct Heat Method (Hair Dryer of 1000-1500 watts) MIX-2251TAPA

and MIX-2251TMAPA only

A hair dryer of 1000-1500 watts should be used to test the thermistors.

Direct the heat toward either of the two thermistors, holding the heat
source approximately 12 inches from the detector in order to avoid dam­aging the plastic housing. The detector will reset only after it has had suf­ficient time to cool. Make sure both thermistors are tested individually.

A sensor that fails any of these tests should be cleaned as described under
CLEANING, and retested. If the sensor fails after cleaning, it must be re­placed.

When testing is complete, restore the system to normal operation and notify
the proper authorities that the system is back in operation.

FIGURE 3. TEST MAGNET POSITION:

2. Remove the sensor cover by pressing firmly on each of the four removal
tabs that hold the cover in place.

3. Vacuum the screen carefully without removing it. If further cleaning is
required continue with Step 4, otherwise skip to Step 7.

4. Remove the chamber cover/screen assembly by pulling it straight out.

5. Use a vacuum cleaner or compressed air to remove dust and debris
from the sensing chamber.

6. Reinstall the chamber cover/screen assembly by sliding the edge over
the sensing chamber. Turn until it is firmly in place.

7. Replace the cover using the LEDs to align the cover and then gently
pushing it until it locks into place. Make sure that the thermistors do not
become bent under the cover on MIX-2251TAPA and MIX-2251TMAPA
models.

8. Reinstall the detector.

9. Test the detector as described in TESTING.

10. Reconnect disabled circuits.

11. Notify the proper authorities that the system is back on line.

FIGURE 4. SENSOR ASSEMBLY:

COVER

COVER
REMOVAL
TABS

ORS

APA and

A)

SENSING
CHAMBER
COVER AND
SCREEN

SENSING
CHAMBER

TEST MAGNET

POSITION

MAGNET TEST

MARKER

CLEANING

Before removing the detector, notify the proper authorities that the smoke

detector system is undergoing maintenance and will be temporarily out of
service. Disable the zone or system undergoing maintenance to prevent un­wanted alarms.

1. Remove the sensor to be cleaned from the system.

Please refer to insert for the Limitations of Fire Alarm Systems

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against

harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause Harmful interference to radio or television reception,

which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.

This Class B digital apparatus complies with Canadian ICES-003.

MC-400-006 2 I56-3319-000
©2008 Mircom

C0215-02

SPECIAL NOTE REGARDING SMOKE DETECTOR GUARDS

Smoke detectors are not to be used with detector guards unless the combina­tion has been evaluated and found suitable for that purpose.

C0145-02

FCC STATEMENT