background image

7) Turn on power to the system.

8) Slide the alignment switch on the receiver to A (see

Figure 14). The yellow trouble LED should light to in-
dicate alignment mode, but the trouble relay will not
activate. If the receiver is left in the alignment mode
for more than an hour, the trouble relay will activate.

9) Point the receiver directly at the transmitter.

B) RECEIVER ALIGNMENT PROCEDURE:

1) Align the receiver by slowly moving it back and forth,

and up and down until all four LEDs light. (NOTE: If
it is impossible to get all four LEDs to light, the trans-
mitter may need to be adjusted. Go to the transmitter
and align it so that all four LEDs light, and then go
back to the receiver and continue with step 2.)

2) Adjust the alignment adjust pot until only three align-

ment LEDs are lit.

3) Further align the receiver by slowly moving it back

and forth, and up and down, trying to get all four
LEDs to light.

REPEAT STEPS 2 AND 3 UNTIL IT IS IMPOSSIBLE TO
GET MORE THAN THREE LEDs TO LIGHT. (NOTE: If
steps 2 and 3 are carefully executed, it should take
two to five tries to align the receiver.)

4) Carefully tighten the horizontal adjustment screws

first and then the two vertical adjustment screws on
the receiver bracket, making sure all three alignment
LEDs remain lit.

C) TRANSMITTER ALIGNMENT PROCEDURE:

1) Slowly move the transmitter back and forth, and up

and down, trying to get all four LEDs to light.

2) If four LEDs light, adjust the alignment adjust pot on

the receiver until only three alignment LEDs are on.

REPEAT STEPS 1 AND 2 UNTIL IT IS IMPOSSIBLE TO
GET MORE THAN THREE LEDs TO LIGHT. (NOTE: If
steps 1 and 2 are carefully executed, it should take
between two and five tries to achieve this.)

3) When it is impossible to get more than three LEDs to

light, carefully tighten the horizontal adjustment
screws and then the vertical adjustment screws on the
transmitter bracket, making sure all three alignment
LEDs stay lit.

4) Slide the alignment switch on the transmitter to the

NORMAL MODE (N) position (see figure 15) and dis-
connect any temporary wiring. Carefully close the
door on the transmitter and go to the receiver.

5) Verify that three alignment LEDs are lit and switch

back to NORMAL MODE (N) at the receiver. It is im-
portant that three alignment LEDs are on (not four)
when leaving alignment mode. This ensures that the
amplifier is not saturated with signal and will be ca-
pable of detecting smoke within its sensitivity limits.
Wait at least one minute before continuing. Do not
block or disturb the beam while it is calibrating. Any
interference could cause a trouble signal. If there is a
trouble signal during this period, switch the receiver
back to ALIGN MODE to make sure that only three
LEDs are lit. Switch back to NORMAL MODE and
wait again. If three alignment LEDs are not on, repeat
the transmitter alignment procedure.

6) When the detector has completed it’s self-calibration,

the green (normal) operation LED will flash every two
or three seconds. Alignment is now complete.

Sensitivity

Total obscuration can be converted to percent per foot, as-
suming uniform smoke density for the entire length of the
beam. The chart below converts total obscuration to per-
cent per foot at both 30% and 55% sensitivity settings.

SENSITIVITY IN %/FT VS DISTANCE

ASSUMING UNIFORM SMOKE DISTRIBUTION

DISTANCE (FEET)

OBSCURA

TION (%/FT)

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

1.3

1.2

1.1

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

= 30% Sensitivity Setting

= 55% Sensitivity Setting

A78-2321-00

D400-18-00

10

I56-494-10R

Summary of Contents for 6424

Page 1: ...put Local LED yellow Normal Operation Local LED flashing green Alignment Aid LED Bar Graph 4 red LEDs Relays Alarm Trouble Environmental Temperature 30 C to 55 C 22 F to 131 F Humidity 10 to 93 RH Noncondensing Mechanical Weight Receiver 1 5 lbs 663 g Transmitter 1 3 lbs 598 g Mounting Ceiling or Wall Separate Mounting Brackets Provided Wiring Plug with Attached Cable Adjustment Angle Ceiling 30 H...

Page 2: ...ectors the EOL Power Supervisory Module is energized The relay contacts along with the detector s trouble relay contacts can provide a closed series circuit in the control panel s alarm initiating loop A loss in power or a trouble condition at the detector causes the respective EOL or trouble relay to open resulting in a trouble signal at the control panel Parts List Description Quantity Receiver ...

Page 3: ...roof or ceiling Figures 3 and 4 show the spac ing for both the shed type and peaked type sloped ceilings Figure 3 Sloped ceiling shed type S 3 FT MAX S 1 2 S MAX Tx Rx A78 2036 01 Figure 4 Sloped ceiling peaked type 1 2 S S S 1 2 S 3 FT MAX 3 FT MAX MOUNT DETECTOR ANYWHERE IN THIS AREA Tx Rx A78 2035 01 Mounting Locations Beam detectors require a stable mounting surface for proper operation A surf...

Page 4: ...he likelihood of wiring er rors Improper connections can prevent a system from re sponding properly in the event of a fire Installation wire used for the beam detector shall be no smaller than 18 gauge 1 0 square mm For best system performance all wiring should be twisted pair and in stalled in separate grounded conduit Do NOT mix fire sys tem wiring in the same conduit as any other electrical wir...

Page 5: ...nsmitter permanently wired to receiver A78 2043 00 CLASS A RETURN LOOP INITIATING LOOP POWER TO DETECTORS LISTED PANEL LISTED REMOTE POWER SOURCE POWER INPUTS TO TRANSMITTER ARE NONPOLAR TRANSMITTER BLUE GREEN WHITE BROWN BLACK RED ORANGE GREEN BLACK RED WHITE STRIPE WHITE WHITE BLACK STRIPE GRAY VIOLET WHITE VIOLET STRIPE BROWN WHITE YELLOW STRIPE WHITE RED STRIPE TRANSMITTER BLUE GREEN BLACK RED...

Page 6: ...ve In any applications where the BMB Beam Mounting Bracket kit is used the kit should be installed before the detector is mounted Instructions for mount ing the BMB are included in the BMB kit 3 Insert the flange of the detector mounting bracket into the keyed hole of the wall or ceiling mounting bracket Slide the detector forward into position The detector should now hang from the bracket 4 Inser...

Page 7: ...NT SCREWS 2 U BRACKET WALL MOUNTING BRACKET MOUNTING HOLE PLASTIC WASHER A78 2034 01 Figure 13 Ceiling mounting MOUNTING HUB MOUNTING HUB ALIGNMENT LEDs STATUS LEDs RECEIVER ONLY BEAM LENS HOLE PLUG ALIGNMENT ADJUST POTENTIOMETER RECEIVER ONLY CABLE EGRESS HOLE PLUG USED TO PLUG UNUSED HOLE VERTICAL ADJUSTMENT SCREWS 2 U BRACKET HORIZONTAL ADJUSTMENT SCREW 10 24 x 2 1 4 in CEILING MOUNTING BRACKET...

Page 8: ...CTOR CABLE RESET SWITCH 30 55 SENSITIVITY SELECT SWITCH N A ALIGNMENT MODE SWITCH A78 2032 01 Figure 15 Rear view transmitter ACCESS DOOR CONNECTOR 6 CONDUCTOR CABLE A N ALIGNMENT MODE SWITCH SW1 L S RANGE SELECT SWITCH SW2 A78 2031 01 D400 18 00 8 I56 494 10R ...

Page 9: ...ge L 100 to 330 feet 2 If the transmitter is directly wired to the receiver Figure 7 slide the alignment switch SW1 on the transmitter to the A align position see Figure 15 Point the trans mitter directly at the receiver then go to step 5 3 If the transmitter is wired directly to a power supply it should be temporarily wired to the receiver if pos sible see Figure 8 NOTE Temporarily wiring the tra...

Page 10: ...this 3 When it is impossible to get more than three LEDs to light carefully tighten the horizontal adjustment screws and then the vertical adjustment screws on the transmitter bracket making sure all three alignment LEDs stay lit 4 Slide the alignment switch on the transmitter to the NORMAL MODE N position see figure 15 and dis connect any temporary wiring Carefully close the door on the transmitt...

Page 11: ... Units that alarm during the non alarm test step 3 should be cleaned and tested again before being returned Follow the maintenance instructions for cleaning B Remote Test Switch The remote test station RTS451 can be used with the 6424 beam smoke detector Follow instructions included with the test station for proper use See Figure 9 Remote Test Station for wiring diagram If the detector is not in t...

Page 12: ...ence or fault Some states do not allow the exclusion or limitation of incidental or conse quential damages so the above limitation or exclusion may not apply to you This Warranty gives you specific legal rights and you may also have other rights which vary from state to state FCC Statement This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 Thi...

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