Edwards Signaling E-SDPCB User Manual

Detector housing

Sensing
chamber
gasket

Rotary
switch

HVAC duct

Detector cover

(rear view)

Sensing chamber gasket

PCB assembly

JP3 jumper

4 x 1/4 48-2

plastite screw

(4X)

Airflow

E-SDPCB Duct Smoke Detector PCB
Replacement Kit Installation Sheet

Description

The duct smoke detector PCB replacement kit is used to repair
E-PDD duct smoke detectors in the field. The kit contains a
printed circuit board and two sensing chamber gasket s.

Installation

WARNING: Before replacing the duct smoke detector’s print ed

circuit board assembly, notify the proper authorities that the fire
alarm system is undergoing maintenan ce and take steps to
prevent the control panel from responding to a false alarm.

Caution: This product contain s componen ts that ar e sen sitive

to static electricity. Use approved handling precautions to
prevent damage from electrostatic di sch arge.

To replace the detector printed circuit board:

1. Remove and retain the four screws securing the detector
cover, then remove the cover.

2. Identify the wire locations at the terminal blocks, then
disconnect wires.

3. Note the device address set o n the rotary switch es, the n
set the same device address on the replacement printed
circuit board.

4. Note the position of the JP3 jumper, and then set the
same JP3 jumper setting on the replacement printed
circuit board.

5. Remove and retain the four screws securing the printed
circuit board to the detector housing, and then remove the
printed circuit board.

6. Replace the sensing chamber gasket on the detector
housing with a new gasket from the kit.

7. Secure the replacement printed circuit board to the
detector housing using the four screws previously
removed.

Figure 1: Replacement diagram

Testing

After replacing the duct smoke detector print ed circ uit board,
the unit must be tested to ensure it is operating correctly before
leaving the job site. For details, refer to Technical Bulletin
P/N 3101212.

8. Connect the terminal block wiring at the locations marked

9. Replace the sensing chamber gasket on the detector

10. Secure the detector cover to the detector housing using

11. Test the detector in accordance with “Testing”.

© 2013 UTC Fire & Security. All rights reserved. 1 / 2 P/N 3101206 • REV 02 • REB 28JAN13

during removal.

cover with a new gasket from the kit.

the four screws previously removed.

2 / 2 P/N 3101206 • REV 02 • REB 28JAN13