Chamberlain LiftMaster LM21XPBB Page 8 Manual Download

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(–)

(+)

(–)

(+)

–

Power from
Control Panel

Terminal Strip

LMEOLR1224
12/24 Vdc EOL
Relay

IMPORTANT:

When using 4-wire smoke detectors with this

device, the smoke detectors must be powered from a source
other than the release device, such as an approved UL1481
regulated power supply providing battery backup support.

Power from
Control Panel

Purple

N/C

(+)

(–)

(+)

(–)

(+)

(–)

(+)

–

Power from
Control Panel

NOTE

: Follow this method of attachment when using LM4W-B,

LM4WT-B, or other N/O 4-wire smoke detectors.

NOTE

: Generic version of a N/C

4-wire smoke detector is shown.

– IN/OUT

+ OUT

+ IN

– IN/OUT

+ OUT

+ IN

–

(–)

(+)

COM

– IN/OUT

+ OUT

+ IN

COM

– IN/OUT

+ OUT

+ IN

–

10k Ohm @1/2 watt
Supervisory Resistor
(LMEOLRES-10)

Terminal Strip

Power from
Control Panel

LMEOLR1224
12/24 Vdc EOL
Relay

NOTE:

Follow this method

of attachment when using
LM2W-B, LM2WT-B, or
other 2-wire 24Vdc smoke
detectors.

24Vdc Power from
Terminal Strip

NOTE

: Follow this method of attachment when using LM4W-B,

LM4WT-B, or other N/O 4-wire smoke detectors.

IMPORTANT:

When using 4-wire smoke detectors with this device,

the smoke detectors must be powered from a source other than the
release device, such as an approved UL1481 regulated power
supply providing battery backup support.

Alarm
Contacts
Style A
(N/O)

CONNECTIONS OF INITIATING DEVICES AND
ACCESSORIES

A maximum of 4 smoke detectors may be installed with this
device. Refer to NFPA 72 and NFPA 80 for instructions
concerning proper placement and detection coverage. End-of-line
devices must be installed for supervision of electrical power to
4-wire smoke detector. When using 4-wire smoke detectors with
this device, electrical supervision must be provided by means of a
UL/ULC listed end-of-line relay.

NOTE:

For low voltage wiring #18 AWG is recommended.

Normally Open “2-Wire,” Class B Style A Initiating Devices

Connect wiring from N/O initiating device loop to positions 3 and
4. Place the supervisory resistor (LMEOLRES-10) contained
within the accessory pack. (Figure 3). Observe proper polarity, 3
(+), 4 (–) when attaching to the release device’s terminal board.

NOTE:

Make certain that the Wire Jumper is placed between

positions 5 and 6.

This option is a supervised, current-limited circuit.

Normally Open “4-Wire,” Class B Style A Initiating Devices

Connect wiring from N/O 4-Wire initiating device loop to
positions 3 and 4, making sure an end-of-line supervisory
resistor (LMEOLRES-10) is installed as shown in Figure 4 or 5,
depending upon the type of smoke detector being used. Observe
proper polarity, 3 (+), 4 (–) when attaching to the release device’s
terminal board.

NOTE:

Make certain that the Wire Jumper is placed between

positions 5 and 6.

This option is a supervised, current-limited circuit.

Normally Closed “4-Wire,” Class B Style A Initiating Devices

Connect wiring from N/C 4-Wire initiating device loop to
positions 5 and 6 (Figure 6). This option is a supervised,
current-limited circuit.

NOTE:

Make certain that the 10k ohm resistor is placed between

positions 3 and 4.

NOTE:

End-of-line devices must be installed adjacent and after

the last initiating device. Initiating device loops are supervised
and cannot be direct series or paralleled between multiple release
devices or shared with other alarm equipment. For proper wiring
configurations from multiple smoke detectors or signaling for
simultaneous closure on multiple doors, call technical support,
1-888-528-7870. Incorrect wiring between devices may cause
damage to the release control circuit and void warranty.

Relay Module Installation

as described on the following page.

W I R I N G

To prevent possible SERIOUS INJURY or DEATH:
• End-of-line devices MUST be installed for supervision of

electrical power to 4-wire smoke detector.

• DO NOT install this device on a motorized door without an

electric safety edge.

ATTENTION

AVERTISSEMENT

WARNING

CAUTION

WARNING