F300-28-00
2
I56-1974-006R
WARNING
LIMITATIONS OF DUCT DETECTORS
WARNING
The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN
AREA DETECTOR PROTECTION as a means of providing life safety. Nor are they a substitute for early warning in a building’s regular
fire detection system.
It is strongly recommended that the user read NFPA Standards 90A, 72, and 101.
This device will not operate without electrical power. Fire situations may cause an interruption of power. The system safeguards should
be discussed with your local fire protection specialist.
This device will not sense smoke unless the ventilation system is operating.
In order to function properly, this detector must be installed according to the instructions. Do not exceed the electrical or ambient
specifications or the detector will not function properly. This detector must be protected from the elements.
INSTALLATION SEQUENCE
Step 1.
Verify duct air flow direction and velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2.
Drill the mounting holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2.1 Install the sampling tube for ducts less than 1
1
⁄
2
feet (0.46m) wide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 3.
Secure the detector housing to the duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 4.
Install the sampling tube for ducts greater than 1
1
⁄
2
feet (0.46m) wide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 4.1 Installation for ducts greater than 1
1
⁄
2
feet (0.46m) but less than 8 feet (2.4m) wide . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 4.2 Installation for ducts more than 8 feet (2.4m) wide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 5.
Install the filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6.
Field wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 7.
Perform detector check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 8.
Install the cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 9.
Detector Maintenance and Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
[1] Verify Duct Air Flow Direction And Velocity
The D350RPL duct smoke detector is designed to be used in air handling systems having air velocities of 100 to 4000 feet per minute
(0.5 to 20.32 m/s). Be sure to check engineering specifications to ensure that the air velocity in the duct falls within these parameters.
If necessary, use a velocity meter to check the air velocity in the duct. See Air Flow Test, section 9.1.
[2] Drill The Mounting Holes
Remove the paper backing from the mounting template supplied. Affix the template to the duct at the desired mounting location. Make
sure the template lies flat and smooth on the duct. Center punch holes A and B. Drill the holes as indicated on the template.
[2.1] Sampling Tube Installation for Ducts Less Than 1
1⁄2
Feet (0.46m) Wide (see Figure 2)
1. Remove the front cover.
2. Slide the plastic sampling tube into the housing bushing.
3. Align the holes in the bushing with the holes in the sampling tube. Make sure there are 6 exposed holes on the plastic sampling
tube. Secure with the #8 self-tapping screw into the bottom of the permanent tube (shown in Figure 2).
Figure 2. Plastic sampling tube connected to duct smoke detector:
NOTE:
For ducts greater than 1
1
⁄
2
feet (0.46m) in width, refer to
sections [4], [4.1] and [4.2].
H0110-00