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Then push up on the bottom ledge until the frame pops out of the bottom track.
- Rotate the frame left or right until the lens clears the tracks.
- Remove lens and replace with appropriate lens. Install with smooth side
of lens facing out; rough side inward. The clipped corners should go on
the top of the unit. Bend two tabs inward to hold lens in place.
- To replace the window, center the window in the cover and slip the
bottom of both the frame and lens into the bottom track.
- Carefully push down and forward on the top frame ledge until the frame
snaps into the top track. Center the window so that the tracks are
between the frame stops.
- Replace the lens holder and snap into place.
• Apply power to the unit.
• Wait at least two minutes, after applying power, to
start walk tests.
NOTE: Walk testing should be done across the cov-
erage pattern.
• The edge of the coverage is determined by activation of the alarm LED.
• Walk test the unit from both directions to determine the boundaries.
If the rated range can not be achieved, try angling the coverage pattern up or
down to ensure the pattern is not aimed too high or low.
The angle of the pattern may be vertically positioned between -12° and +2° by
sliding the lens holder up or down. A good starting angle when the detector is
mounted at 6.5 ft. (2 m) is -7° for the standard, wide angle, and barrier
coverages, -4° for the dual corridor and -2° for the long range coverage.
NOTE: The pattern may also be moved ±10° horizontally by rotating the
window left or right.
Final Tests:
NOTE: Meter readings are very important in determining background distur-
bance levels and catch margin sensitivity.
• Connect a 20,000 ohm/volt (or greater) DC VOM to
the Background Noise Voltage connector pins as
shown. Set meter scale for about 5 VDC. (Use of
the TC6000 is recommended, but is not essential for
meter use.)
• The base reference level for reading background
noise or target voltages is approximately 2.0 VDC.
Installations in quiet environments, therefore, will result in a steady meter
reading between 1.8 and 2.2 VDC.
Voltage changes greater than 0.75 VDC from the reference level are desirable
for good catch performance. If changes are less than plus or minus 0.75 VDC,
the device may fail to respond at this distance if the temperature difference
between the intruder and the background is very small. Try aiming the unit up
and down to maximize the voltage change during walk tests.
• Turn on all heating and cooling sources that would normally be in operation
during times of protection. Stand away from the unit and outside the coverage
pattern, then monitor the background noise for at least three minutes. The
DS915 readings should not deviate from the reference level more than
±0.2 VDC. For readings outside these limits, eliminate the cause or adjust
the unit slightly.
Other Information:
Maintenance: At least once a year the range and coverage should be checked
in accordance with the section Set Up and Walk Testing. To ensure continued
daily operation, the end user should be instructed to walk through the far end
of the coverage pattern to assure an alarm output prior to arming the system.
© 2004 Bosch Security Systems
130 Perinton Parkway, Fairport, New York, USA 14450-9199
Customer Service: (800) 289-0096; Technical Support: (888) 886-6189
Pet Lens Considerations: The Pet Lens is intended to provide protection in
installations where pets are allowed to move about freely.
• Because the unit will be installed lower than normal, be sure to position the
unit so that it has a clear line-of-sight across the room.
• Adjust the Lens Holder Assembly for a 0° vertical angle.
• To provide an accurate safety margin, install the unit no lower than twice
the height of the pet.
• Make sure the field of view is free of all furniture or other objects upon
which the pet could climb or jump, resulting in an unwanted alarm.
Coverage Patterns:
0 METERS
20
TOP VIEW
10
0
10
20
0
10
SIDE VIEW
6
0 FEET
A B C D E
H
STANDARD
0 METERS
30
20
TOP VIEW
10
0
10
WHITE
20
RED
BLACK
TC6000
30
0
10
SIDE VIEW
0
0
FEET
M
Z
115° WIDE ANGLE
M ETE R S
0
5
TO P VIEW
0
5
10
S ID E VIE W
E
D
5 0°
0
FE ET
10
METERS
3
6
9
6
0
A
10
B
3
H
C
20
77°
I
D
B
30
E
J
F
3
40
G
6
50
10
30
20
A - G
60
0°
0
H - J
10
14.5°
20
30
10
0
F
G
I
J
OLS91
3
6
9
9
M
6
20
L
Z
K
Y
X
J
3
W
I
10
V
H
U
T
115°
G
S
F
R
E
Q
3
D
P
10
O
C
N
B
6
A
20
9
10
10
20
30
3
6
9
0°
A - M
N - Z
14.5°
10
20
30
A
N
OLW91
METERS
5
9
3
6
0
5
9°
FEET
0
10
SIDE VIEW
3
D
A
0°
B
FEET
5°
0
14 .3°
31 °
C
30
20
A
B
C
D
E
B A R R IE R
O LB 91
DS915 Installation Instructions
3
6
9
12
15
18
I
J
P
H
O
3
G
N
M
F
K L
E
6
D
C
9
12
89°
15
TOP VIEW
A
18
10
20
30
40
50
60
SIDE VIEW
A, J
B - I
K - P
10
20
30
40
50
60
FEET
H
G
F
E
D
C
J
A
I
K
B
P
O
N
M
L
DUAL CORRIDOR
OLC91
METERS
0
3
6
9
TOP VIEW
G
F
3
E
D
77°
0
C
B
3
A
10
20
30
0
SIDE VIEW
4
0
0
10
20
30
FEET
A B C D E
F
G
PET
AVOIDANCE OLP91
3
6
9
12
15
18
TOP VIEW
9°
10
20
30
40
50
60
3
6
9
12
15
18
A
C
B
10
20
30
40
50
60
A
B
C
D
LONG RANGE
BARRIER OLR91
02/04
P/N: 22489G
Page 2
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