System Sensor PDRP-1001 User Manual

2. Installation

Initiating Device Circuits

18

PDRP-1001 Instruction Manual  PN 50734:D0  04/06/01

The control panel provides four (4) Initiating Device Circuits (#1, #2, #3 and #4) and they may be 
configured as either Style D (Class A) or Style B (Class B).

Initiating devices include: Heat, Photoelectric and Ionization type detectors, Manual Pull Stations and 
Waterflow alarm devices.

Note: Refer to the "Appendix B: Compatible Devices" on page 39 for compatible devices.

• Wire all alarm initiating devices sequentially for proper supervision.
• Observe polarity when connecting polarized devices.
• All circuits are supervised and power-limited.
• Leave dummy load resistor (provided) on all unused circuits.  

Style D (Class A)

Initiating Device 

Circuit

Style B (Class B)

Initiating Device 

Circuit

Style B (Class B)

Supervisory 

Circuit

PA

R

3

-id

c.

cd

r

Note: Silk screen printing on circuit board moved to bottom for clarity

4.7K, 1/2-Watt ELR
PN 71252
(UL listed)

Normally Open 

Waterflow 

Devices

Normally Open 

Tamper or 

Pressure 
Switches

Heat 
Detector

Two-wire 
Smoke 
Detector

Manual
Pull Station

Style B (Class B)

Initiating Device 

Circuit