Chamberlain LiftMaster LM21XPBB Manual Download Page 10

10

W I R I N G

FIGURE 11

OPTIONAL CONNECTIONS (cont’d)

VOICE BOARD OPTION

The voice board provides one of two verbal warnings that the fire
door is closing. Typically, depending on the length of the delay
chosen on the release device, a warning tone will occur prior to
the message, which is approximately 10 seconds in length (for
example, a 20 second delay setting on the release device will
result in a 10 second warning tone followed by the verbal warning
message). There are two messages that may be selected: 

Message 1: Warning tone followed by the message, “Warning!
An emergency condition exists and this fire door is about to
close; please remove any obstructions from its path and stand
clear.” 

Message 2: Warning tone followed by the message, “Warning!
This fire door will close in 10 seconds... 5 seconds... the fire
door is now closing; please remove any obstructions from its
path and stand clear.” 

The release device has an 4-position DIP Switch mounted on the
circuit board, and the switch at position #3 permits selection of
either message. In the “ON” position, Message 1 is activated; in
the “OFF” position, Message 2 is activated (Figure 12). 

The voice board can drive up to two 70.7V speakers (Model
LM8SP) or speaker inputs to speaker strobes (Model
LMPSTR2475ADA). Maximum delivered power is 5 watts. 

A potentiometer (VR1) is mounted on the board and rotation
counterclockwise increases the volume (clockwise to decrease
volume) (Figure 11).

DIP SWITCH SELECTION

The release device will provide a factory default delay of 10
seconds (to minimize nuisance alarms) before releasing the
fusible link chain upon alarm or power loss. A 4-position DIP
Switch found on the PC board within the release device can be
used to adjust the length of the delay to one of four preset delays.
The optional delay settings are as follows:

FIGURE 12

Delay Setting

Switch Position

1

2

10 Seconds

Off

Off

20 Seconds

Off On

30 Seconds

On

Off

60 Seconds

On

On

NOTE:

Set all DIP switch options before applying power to the

system.

Wire to Speaker

Volume Control
CCW for Max

O

N

NOTE: 

Position 4 is unused and should remain in the OFF position.

Position 3 is used to select one of the two available voice messages.

Factory default setting of 10 seconds shown.

Summary of Contents for LiftMaster LM21XPBB

Page 1: ...L L M M 2 2 1 1 X X P P B B B B L L M M 2 2 1 1 X X P P B B B B V V B B E EX XT TE EN ND DE ED D P PE ER RF FO OR RM MA AN NC CE E R RE EL LE EA AS SE E D DE EV VI IC CE E APPROVED The Chamberlain Gro...

Page 2: ...you must read and fully understand this manual and follow all safety instructions DO NOT attempt repair or service of your release device unless you are an Authorized Service Technician GENERAL DESCR...

Page 3: ...that the wall or mounting surface provide adequate support for the release device Refer to the door manufacturer s recommendations for use of this product with specific door being utilized Use only ha...

Page 4: ...tion of pull must be perpendicular to the side of the release device enclosure Install an eyebolt a minimum distance of 12 from the release device to adequately redirect sash chain pull 4 Install end...

Page 5: ...ncillary devices i e smoke detectors horn strobes etc To reduce the risk of SEVERE INJURY or DEATH ALL electrical connections MUST be made by a qualified individual Disconnect power at the fuse box BE...

Page 6: ...3 2 1 Voice Board Wiring Annunciator Wiring with Sleeve Low Voltage Wiring High Voltage Wiring Ground L2 L1 Power Strip Mechanical Reset Plunger Refer to wiring section for proper application of thes...

Page 7: ...consist of 22 18 AWG wiring Use only 250Vac 3 Amp 3 AG Slo Blo fuses 1 Supervised power limited circuit 20 Ohm maximum line impedance 2 Unsupervised power limited circuit 20 Ohm maximum line impedance...

Page 8: ...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 Obs...

Page 9: ...is in the closed position and so that it will toggle states from its N O condition switch closed when door is closed to a closed condition indicating that the door edge has made contact with desired d...

Page 10: ...lection of either message In the ON position Message 1 is activated in the OFF position Message 2 is activated Figure 12 The voice board can drive up to two 70 7V speakers Model LM8SP or speaker input...

Page 11: ...ructions Raise door and then reset the release device by pushing downward on the mechanical reset button at the top of the device Fully insert the end link through the side opening on the device and r...

Page 12: ...orrect If not the release device will not release the fusible link assembly in a fire condition Conversely the release device will always release the fusible link assembly when powered or reset CIRCUI...

Page 13: ...ATH Stand clear of path of door Disconnect ALL electrical and battery power BEFORE performing maintenance ATTENTION AVERTISSEMENT AVERTISSEMENT AVERTISSEMENT WARNING CAUTION WARNING WARNING WARNING PR...

Page 14: ...ector 24Vdc Ion 9 LM1412 Smoke Detector 12Vdc Ion 10 LMTH135 Heat Detector 135 Degree Fixed Temperature 11 LMTH194 Heat Detector 194 Degree Fixed Temperature ITEM PART DESCRIPTION 12 LMEH1224ADA Horn...

Page 15: ...24MC LMHS2475ADA 24Vdc Horn Strobe P1224MC P2R LMEH1224ADA 24Vdc Horn H12 24 LM8SP Speaker SP201R MODEL NO DESCRIPTION LMEOLRES10 10 kOhm End of Line Resistor LMEOLRES 10 LMEOLR1224 End of Line Relay...

Page 16: ...01 32051D 2008 The Chamberlain Group Inc 2 11 08 All Rights Reserved...

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