background image

5. Refer to 

E. Vertical Pattern Adjustment

and Table 1 for recom-

mended detector pattern setting for various mounting heights and

protection ranges.

6. Replace front cover.

D. Horizontal Adjustment of Lens

The protection pattern can be moved to the left or right by horizontal

adjustment as follows:
1. Remove front cover.

2. Release the lens frame as shown in Figure 4.
3. Grasp the lens firmly on both sides (front and back) and slide the

lens to the left or right, as needed. The lens may be moved as much

as 4¡ (from center) in either direction.

4. Replace lens, lens frame and the front cover.
After adjustment, conduct a Walk-Test to ensure proper coverage of

the area to be protected (see 

TEST PROCEDURES

).

E. Vertical Pattern Adjustment

The protection pattern can be raised or lowered by repositioning the

PC board in the detector. A graduated scale to the left of the board

(see Figure 5) indicates the approximate number of degrees by which

the pattern can be raised (max. +5¡) or lowered (max. -20¡). To make

this adjustment, slide the board upward or downward by the number

of degrees required. After any adjustment, conduct a Walk-Test to

ensure proper coverage of the area to be protected (see 

TEST PROCE-

DURES

).

Table 1 indicates the recommended setting at various mounting

heights.

F. Lens Masking

The supplied masking strips can be used to produce a protection pat-

tern that suits the particular requirements of the protected area, or

eliminate coverage from areas where you anticipate environmental

disturbances that might reduce the PIRÕs stability (a heater or other

heat-producing object, for example).  Simply peel off the appropriate

pressure-sensitive adhesive strip(s) and apply over the desired lens

segment(s).  Be sure to affix the masking strips to the 

inside

of the

lens (not the outer, smooth side). Each lens segment that is masked

results in the elimination of one zone of protection from the coverage

pattern. 

Figure 1. Cover Removal

Figure 2. Detector Base

Figure 3. Corner Mounting

Figure 4. Changing Lenses

Figure 5. Wiring Connections

WIRING CONNECTIONS

Bring all wires in through the wire access slot at the top of the detec-

tor base (near the terminal block) and connect to the screw terminals

(see Figure 5 for wiring details). Seal any openings in the base with

foam or RTV (not supplied) to prevent drafts or insects from entering

the unit.

Apply power only after all connections have been made and

are inspected.

LED ENABLE/DISABLE OPTION

To enable the LED,

set the DIP switch #1 

DOWN

(see Figure 5 for

switch location). To disable the LED, set DIP switch #1 

UP

.  Use a

small pointed tool to move the switch handle up or down.

PULSE COUNT OPTION

For Intermediate Pulse Count, 

set the Pulse Count DIP switch #2

UP

(see Figure 5 for switch location). 

For Standard Pulse Count,

set DIP switch #2 

DOWN

.  Use a small pointed tool to move the

IMPORTANT

NOTE THE MOUNTING 
ORIENTATION OF THIS
DETECTOR. WIRE ENTRY
IS AT THE TOP, AND LENS
IS AT THE BOTTOM!

(1) INSERT SCREWDRIVER
     IN GROOVE AND TWIST

(2)  REMOVE 
      COVER

CORNER

OF 

WALL

DETECTOR

BASE

1

2

3

4

ALARM

LED

TO CLOSED
CIRCUIT
PROTECTIVE LOOP

12VDC POWER

CONNECTS

HERE

(OBSERVE

POLARITY)

MARKER

VERTICAL
ADJUSTMENT
SCALE

+5˚
-0˚
-5˚
-10˚
-15˚
-20˚

DET

TERMINALS:
1-12VDC (+)
2-12VDC (–)
3-
4-

RELAY
(OPENS
ON ALARM)

+

WIRING

DETAILS

1

2

3

4

}

+ 12V –  

RELAY

DIP

SWITCH

NOT
USED

PULSE
COUNT

LED
ENABLE/
DISABLE

#1: UP

= LED DISABLE

DOWN = ENABLE

#2: UP 

= INTERMEDIATE PULSE COUNT

DOWN = STANDARD PULSE COUNT

DIP

SWITCH

5-
6-

TAMPER
(998EXPI
ONLY)

}

5

6

TAMPER

5

6

TO TAMPER LOOP
(998EXPI ONLY)

TAB

TAB

LENS 
FRAME

LENS

(SMOOTH

SIDE

FACING

OUTWARD)

INSERT BLADE 

UNDER TAB AND 

LEVER INWARD TO

RELEASE EACH
CORNER OF LENS
FRAME, THEN
REMOVE LENS
FRAME.

LED

+5˚
-0˚
-5˚
-10˚
-15˚
-20˚

+ 12V –  

RELAY

A

X2

X1

A

A

A

B

B

B

B

KNOCKOUT HOLES

A  = SURFACE

MOUNTING (4)

B  = CORNER

MOUNTING (4)

X1 = TOP WIRE ENTRY

(SURFACE WIRING)

X2 = REAR WIRE ENTRY

(IN-WALL WIRING)

998EXPI

ONLY

TAMPER

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