Honeywell SK-Beam Installation And Maintenance Instructions Manual page 7

FIGURE 13. OUTER HOUSING SCREW LOCATIONS
SCREW LOCATIONS
STEP 3. SENSITIVITY SELECTION
Set the sensitivity of the detector using the sensitivity switch (Figure 10) and
digital display. Use the chart below to determine which setting is acceptable
(per UL 268) for your installed distance. Before attempting to set the sensi-
tivity, make sure that you have completed the fine adjustment process (the
digital display should be "OFF"). To set the sensitivity, depress the sensitivity
button once. The digital display will illuminate and read the current sensitivity
setting as indicated on the chart. Continue to depress the sensitivity button
until the desired setting is achieved. The display will turn off automatically.
The default sensitivity will be factory set at level 4 or 50%.
Sensitivity % Display
Setting Obscuration Reading
Level 1 25 25
Level 2 30 30
Level 3 40 40
Level 4 50 50
Acclimate 30 to 50 A1
Level 1
Acclimate 40 to 50 A2
Level 2
In addition to the four standard sensitivity selections the detector has two Ac-
climate settings. When either of these settings is chosen the detector will au-
tomatically adjust its sensitivity using advanced software algorithms to select
the optimum sensitivity for the environment. The sensitivity will be continu-
ously adjusted within the ranges specified in the chart above.
Total obscuration can be converted to percent per foot, assuming uniform
smoke density for the entire length of the beam. The charts below converts
total obscuration to percent per foot for all acceptable sensitivity settings.
SENSITIVITY IN PERCENT PER FOOT VS. DISTANCE
(ASSUMES UNIFORM SMOKE DISTRIBUTION)
2.0
30% SETTING
1.5
40% SETTING
1.0
50% SETTING
0.5
25% SETTING
0.0
0 50 100 150
DISTANCE IN FEET
RESET SWITCH
C0266-00
Acceptable Acceptable
Distance Distance
Between Between
Detector and Detector and
Reflector (Feet) Reflector
(meters)
16.4 to 120 5.0 to 36.6
25 to 150 7.6 to 45.7
60 to 220 18.3 to 67
80 to 328 24.4 to 100
80 to 150 24.4 to 45.7
80 to 220 24.4 to 67
200 250 300 350
C0268-00
STEP 4. SHORT CIRCUIT ISOLATION
The detector includes an on-board circuit isolator that allows for NFPA72 style
7 operation. In cases where style 7 operation is not desired the isolator can be
disabled using the two shunts on the circuit board. See Figure 10 for jumper
locations. When the jumpers are present the isolator is disabled. This is the
default state.
STEP 5. COMPLETING THE INSTALLATION
Refer to Figure 13 for this step.
1. Tighten the optics lock down screws so the optics are secure. Take spe-
cial care not to shift or disturb the optics. Use a hand screwdriver to
avoid over-tightening or jarring the optics.
2. Install the outer housing of the detector, making sure to tighten all four
screws in each corner of the housing.
NOTE: The housing contains a gasket seal that protects the detector from
moisture.
3. Remove the protective film from the front surface of the outer housing.
4. Press the reset button, making sure to avoid blocking the line-of-sight
between the detector and reflector. The yellow LED will begin to blink
for about 20 seconds. At this time, the detector is making its final gain
adjustment to compensate for the effects of installing the outer housing.
When the gain adjustment is complete, the yellow LED will turn off and
the green LED will begin blinking, indicating a successful gain adjustment.
5. Install the trim ring by snapping it onto the outer housing. If the trim ring
was painted, ensure that the paint is completely dry before installing.
STEP 6. FINAL VERIFICATION
1. Block the entire reflector with an opaque material. Nearly any non-re-
flective opaque material will do, including this manual or the cardboard
packaging inserts. The detector should enter a trouble condition, indi-
cated by the fault relay and the yellow LED (see Appendix 1) after 30
seconds. If the detector does not enter a trouble condition, there is a
problem with the installation. Refer to troubleshooting section in Appen-
dix 1 for assistance.
2. Complete a sensitivity test of the detector. Refer to the Sensitivity Testing
section of this manual for the appropriate procedure.
3. Remove the orange adhesive-backed sheet used to aid in coarse adjustment.
Congratulations. You have completed the final installation and alignment pro-
cedure.
SENSITIVITY TESTING
NOTE: Before testing, notify the proper authorities that the smoke detector
system is undergoing maintenance, and therefore the system will be tempo-
rarily out of service. Disable the zone or system undergoing maintenance to
prevent unwanted alarms.
Detectors must be tested after installation and following periodic mainte-
nance. The sensitivity of the SK-Beam/SK-Beam-T may be tested as follows:
NOTE: Before testing the detector, check for the presence of the flashing green
LED at the receiver, making sure not to disturb or block the beam. If it does
not flash and the detector is not in trouble or alarm, power has been lost to
the detector (check the wiring).
A. CALIBRATED TEST FILTER
The sensitivity of the detector can be tested using an opaque material to cover
the reflector by an amount indicated by the graduated scale on the reflector.
(Due to the high optical efficiency of the reflector the selection of the opaque
material used to block the reflector is not critical. Acceptable materials in-
clude, but aren't limited to, this manual or the cardboard packaging inserts.)
Refer to Figure 14 for this procedure.
1. Verify the sensitivity setting of the detector in % obscuration. See the
Sensitivity Selection section of this manual for sensitivity determination
if sensitivity is unknown.
2. Place the blocking material over the reflector, lining it up with the gradu-
ated marks that are 10 less than the detector's setting in % obscuration.
The detector should not alarm or fault. Keep the material in place for a
minimum of 1 minute.
3. Place the blocking material over the reflector lining it up with the gradu-
ated marks that are 10 more than the detectors setting in % obscuration.
The detector should enter alarm within 1 minute.
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