Edwards Signaling E-PD User Manual

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E-PD Photoelectric Smoke Detector

Installation Sheet


The E-PD Photoelectric Smoke Detector uses an optical sensing chamber to detect smoke. The detector analyzes the sensor data to determine whether to initiate an alarm. The detector is capable of performing comprehensive selfdiagnostics and storing the results. The detector continuously monitors changes in sensitivity due to the environment (e.g., dirt, smoke, temperature, humidity) and notifies the loop controller of its condition. The detector issues a dirty sensor warning when it reaches its preset limit. This notifies the operator of the need for service while the detector is still operating.

LED operation

The detector provides a bicolor LED that shows its status. Normal: Green LED flashes

Alarm/active: Red LED flashes


Refer to Edwards Signaling Smoke and Heat Detectors Applications Bulletin (P/N 3101212) for additional information on detector placement and spacing.


This detector does not operate without electrical power. As fires frequently cause power interruption, discuss further safeguards with the local fire protection specialist.

This detector does not sense fires in areas where smoke cannot reach the detector. Smoke from fires in walls, roofs, or on the opposite side of closed doors may not reach the detector.

Photoelectric detectors have a wide range of sensing capabilities, but are best suited for detecting slow, smoldering fires.

To ensure proper operation, schedule maintenance (regular or selected) in accordance with the requirements of the authority having jurisdiction. Refer to NFPA 72 and CAN/ULC-S536.

To ensure proper operation, store the detector within the recommended ranges. Allow the detector to stabilize to room temperature before applying power.

Keep the dust cover (supplied) on the detector during installation and remove it prior to commissioning and service. The dust cover is not a substitute for removing the detector during new construction or heavy remodeling.

To install the detector:

1.Install and wire the detector base using the installation sheet supplied with the detector base.

2.Set the detector address. Refer to the panel technical reference manual for a list of valid addresses. Use a screwdriver to adjust the two rotary switches on the back of the detector. See Figure 1.

3.Set the left rotary switch (0 through 12) for the 10s and 100s digit and the right rotary switch for the 0 through 9 digit.

4.Connect the detector to the base by rotating the detector clockwise until it snaps into the locked position.

The head can be removed by turning it counterclockwise.

5.If the head must lock to the base, break away the locking tab using a pair of pliers. See Figure 2.

To then remove the detector head after breaking away the locking tab, insert a small screwdriver into the slot on the side of the base and press in while simultaneously turning the detector head counterclockwise.

Figure 1: Setting detector address (address 32 shown)

1.Insert screwdriver here

Figure 2: Breakaway tab

45 6 7 8 9



5 6


10 2




21 0







1.Breakaway tab

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P/N 3101207 • REV 03 • REB 28JAN13

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