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D100-101-00C   

  1  

  I56-6476-000 

INSTALLATION AND MAINTENANCE INSTRUCTIONS  

Model 885-WP Weatherproof  

Heat Detector  

SPECIFICATIONS 

Diameter: 
Height (including mounting bracket):  
Weight (including mounting bracket): 
Operating Temperature Range:  
IP Rating: 
Sensitivity:  
Operating Voltage:  
Standby Current:  
Alarm Current: 
Latching Alarm: 
Software Ver.  
Standard:  
Type: 

102.5 mm (4.04 inches)  
47.5 mm (1.87 inches)  
142 g (5.0 ounce) 
-10°C to 50°C (14°F to 122°F) 
IP66 
60°C (140°F) Fixed Temperature with Rate-of-Rise 
8.5VDC to 35VDC 

140

μ

10mA 

130mA (Controlled by panel and current limiting resistor) 

≤5s 

AS 7240.5

2004 

A2R 

BEFORE INSTALLING 

Please thoroughly read System Sensor manual which provides detailed 
information on detector spacing, placement, zoning, wiring, and special 
applications. Copies of this manual are available at no charge from System 
Sensor.  

NOTICE: This manual shall be left with the owner/user of this equipment. 

IMPORTANT: This detector must be tested and maintained regularly in 
accordance with the requirements of the local standards and regulations. 
The detector should be cleaned at least once a year. 

GENERAL DESCRIPTION 

Model 885-WP is a 2-wire rate-of-rise with fixed temperature (60°C) heat 
detector. This detector is designed to provide open area protection in areas 
subject to moisture. This detector is sealed against the entry of moisture to 
a rating of IP66. The LED will latch on when the detector is in alarm.  

MOUNTING 

Each 885-WP detector is supplied with a mounting bracket that permits the 
detector to be mounted directly to the ceiling or to a junction box.   

Tamper-resistant Feature 

This detector includes a tamper-resistant feature that prevents its removal 
from the mounting bracket without the use of a key. To make the detector 
tamper-resistant, remove the tab from the tamper arm on the mounting 
bracket using a cutting tool. Remove the tamper key from the center of the 
mounting bracket by twisting it back and forth several times (see Figure2). 
Once the detector is installed, it may be removed from the mounting 
bracket by inserting the T-shaped end of the key into the slot on the side of 
the unit and rotating the detector counter-clockwise. 

Figure1.   Surface mounting of the 885-WP weatherproof 
heat detector into a 50/60 mm junction box. 

NOTE: Please dispose electronic waste following national or local regulations 
after being scrapped or replaced. Do not discard. 

Figure2.  Module 885-WP weatherproof Heat Detector 

Mounting bracket 

Wiring Installation Guidelines  

This detector provides six wires which are divided into three groups, 
separately two red, two white and two black wires. Refer to Figure 4.  
Terminal Notes:  
Red wire:       Power / Detector Cve  
Black wire     Power / Detector Circuit -ve  

(the power and the LED use the same cathode) 

White wire     Remote LED +ve  
Wiring Diagram refers to Figure 4. 

Remove power from the communication line before installing detector. 

1.

Connect the wires to power wiring as per the wiring diagram, see
Figure 4.

2.

The wiring connections must be prevented from water, see figure 3.

INSTALLATION 

NOTE: All wiring must conform to applicable local codes, ordinances, and 
regulations. 
NOTE: Verify that all detector mounting brackets are installed, that the 
initiating-device circuits have been tested, and that the wiring is correct.  

Remove power from initiating-device circuits before installing detectors. 

1.

 

Secure mounting bracket to the roof or ceiling.

2.

Push the detector into the mounting bracket while turning it
clockwise to secure it into place. Connect the wires to power wiring
in junction box, see Figure 3.

3.

 

After all detectors have been installed, apply power to the control unit
or initiating-device circuits.

I56-6476-000

 

 

A5665‐112

TAMPER KEY

ALIGNMENT

NOTCHES

TAMPER ARM

(CUT OFF SMALL TAB TO ACTUATE

 TAMPER-RESIST FEATURE-DEPRESS
 ARM WITH KEY TO REMOVE DETECTOR)

A5665‐113 

WARNING

 

mounted onto the mounting bracket

the detector

hen

w

ent

m

Align

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