Velleman HAA52N - Manual (Page 5)

HAA52N
01 (10/10/2008) 5
b. Jumper Settings
LED ON Enables the LED
ON = alarm activated.
FLASH = power-up.
OFF Disables the LED. Does not affect detection.
MODE S Standard alternate polarity signal processing. For operation within a stable
environment.
P Double alternate polarity signal processing within 10 seconds. For a harsh
environment.
ALARM NC The alarm relay output contact is NC. The output relay is normally energized.
NO The alarm relay output contact is NO. The output relay is normally de-
energized.
7. Installation
a. Mounting Location
• The detector can be surface or corner mounted, or mounted with the supplies swivel bracket.
Always mount the unit on a sturdy surface.
• The detector should be mounted indoors, in areas that do not have openings constantly exposed
to the outside environment.
• Select the mounting location so that the expected movement of an intruder will cross the
detection beam.
• Do not locate the detector where hot or cold moving air will blow directly onto the unit.
• Avoid aiming the detector towards heating or air conditioning vents or ducts, exterior metal
walls, exterior windows or curtains covering windows, refrigerator or freezer grills or other
surfaces that may change temperature rapidly.
• Avoid putting large objects in front of the detector which will cause significant changes in the
area or volume protected.
• Select the mounting location so that the beam patterns are at a 45° angle to the intruder’s
expected path. Installation height should be 2 ~ 3m.
b. Front Cover Removal
Loosen the screw on the bottom of the box to release the front cover from the rear cover.
c. PCB Removal
It is necessary to remove the PCB before mounting the rear cover. Loosen the PCB fixing screw.
Pull out the PCB carefully.
d. Rear Cover Mounting
The rear cover is prepared for either surface or corner mounting, or mounting with the supplied
swivel bracket.
• Punch the cable hole at the back of the rear cover, together with the fixing holes (knockout
holes) according to the mounting (surface or corner mounting, or mounting with the supplied
swivel bracket).
• Mount the rear cover or mount the swivel bracket with screws (mount the rear cover on the
swivel bracket afterwards).
1. Rear cover
2. Fixing screw
3. Swivel bracket