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STEP 7. PERFORM DETECTOR CHECK
AIR FLOW
1. To verify sufficient sampling of ducted air, use a manometer to measure the differential pressure created from air flow
across the sampling tubes. The pressure should measure no less than 0.01 inches of water and no greater than 1.20
inches of water.
2. Inspect the duct housing sensing chamber and clear any obstructions that may impede air flow across the detector
head. If a smoke test is required, smoke such as cigarette, cotton wick, or punk smoke may be blown directly at the
smoke sensor head. It is important to plug the exhaust and sampling tube hole to prevent ducted air from blowing
smoke away from the smoke sensor head. Record all test records in the Detector Test Log enclosed (Page 12).
CAUTION:
REMOVE THE PLUGS AFTER TESTING OR THE SENSOR WILL NOT SENSE SMOKE IN THE AIR
DUCT.
ALARM TESTS
Check the detector interconnections before replacing the duct housing cover. Check the 14506873-001 as follows:
A. SSDM0204 MAGNET TEST
1. Make sure power is applied to the detector.
2. Position the painted surface of the test magnet against the housing next to the rib molded onto the outside of the
housing (see Figure 7).
3. The LEDs on the detector should latch on as should any accessories (SSDPA400, SSDRA400Z, SSDRTS451), and
the alarm condition should be verified at the control panel. The control panel must be active for an alarm to be ini-
tiated.
DETECTOR
HEAD
TEST
LOCATOR
Figure 7. Testing Detector Alarm
B. SSDRTS451/SSDRTS451KEY REMOTE TEST STATION
The SSDRTS451/SSDRTS451KEY Remote Test Station facilitates test of the alarm capability of the duct detector, as indi-
cated in the SSDRTS451/SSDRTS451KEY manual. The 14506873-001 duct detector cannot be reset by the
SSDRTS451/SSDRTS451KEY. It must be reset at the system control panel.
To install the SSDRTS451/SSDRTS451KEY test coil, connect the device as shown in Figure 9. Position the coil in the
detector housing with the arrow facing up and pointing toward the detector as in Figure 9. Attach the coil leads to the
housing terminals as shown; polarity is not important. Firmly screw the test coil mounting bracket in place over the test
coil. The wire run connecting the remote test station to the duct detector must be less than 25 ohms.
H500-03-00
DUCT
HOUSING
TEST
MAGNET
PAINTED SIDE
TOWARD HOUSING
A78-2452-00
DETECTOR
HEAD
TWIST
CLOCKWISE
TO INSTALL
Figure 8. Detector Head Removal
8
TWIST
COUNTERCLOCKWISE
TO REMOVE
DUCT
HOUSING
A78-2453-00
I56-475-09R
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