The duct smoke detector shall be a System

Sensor Model DH200PL or DH200RPL

Intelligent Low-Flow Duct Smoke Detector

to be used with compatible control pan-

els. The duct smoke detector shall be UL

listed per UL 268A, Standard for Smoke

Detectors for Duct Applications, specifi-

cally for use in air handling systems. The

detector shall operate in air velocities from

100 to 4000 feet per minute. The detec-

tor shall be an intelligent photoelectronic

detector. It shall be capable of local testing

via magnetic switch or remote testing from

the RTS451 or RTS451KEY Remote Test

Station. The duct smoke detector housing

shall incorporate an airtight smoke cham-

ber in compliance with UL 268A. The

housing shall be capable of mounting to

either rectangular or round ducts without

adapter brackets. An integral filter system

shall be included to reduce dust and resi-

due effects, thereby reducing maintenance

and servicing. Sampling tubes shall be eas-

ily installed after the housing is mounted

to the duct by passing through the duct

housing. Terminal connections shall be of

the strip and clamp method suitable for

12-18 AWG wiring.

Architect/Engineer Specifications

Voltage Range

15 to 32 VDC

Standby Current

300µA @ 24 VDC (one communica-

tion every 5 seconds with LED blink

enabled)

Wiring diagram for DH200PL Duct Smoke Detector with optional RA400Z

Wiring diagram for DH200PL Duct Smoke Detector with RTS451/RTS451KEY

+

–

COMMUNICATION

LINE

UL LISTED CONTROL

PANEL

1ST DETECTOR

IN LOOP

2ND DETECTOR

IN LOOP

DH200PL

RTS451/RTS451KEY

4

5

6

1

2

3

FIELD INSTALLED

JUMPER

COMMON TEST

LED

RESET

FOR RTS451, TERMINAL 3 IS NOT USED.

(RTS451 DOES NOT HAVE A TERMINAL 6.)

FOR RTS451KEY, TERMINALS 3 AND 6

ARE NOT USED.

DH200PL

+

RA400Z

Wiring diagram for DH200PL Duct Smoke Detector using a UL listed control panel

DH200PL Specifications

Device

Standby

Alarm

RA400Z

0 mA

10 mA Max.

RTS451/RTS451KEY

0 mA

7.5 mA Max.

Accessory Current Loads

(Must break tab on back of RA400Z when used with DH200PL.)