Honeywell FS20X Series User Manual page 14

FS20X Fire and Flame Detectors
Figure 19� Typical relay output wiring for monitoring separate alarm and fault contacts
Figure 20� Typical relay output wiring for monitoring alarm and fault contacts on a single two-wire input
Notes:
1� The cable shield must be earth grounded at one end only, at the control panel� Coil and tape the cable
shield at the detector end�
2� The alarm relay contacts are shown with no power applied� The alarm relay is de-energized during
normal operation and with no alarm� This relay will energize during alarm conditions�
3� Fault relay contacts are also shown with no power applied� During normal operation and with no fault,
this relay will energize and the N�O�contacts will close�
4� Install an E�O�L� device as required and supplied by the fire alarm panel�
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FS20X Fire and Flame Detectors
Figure 21� Recommended wiring configurations
Changing Detector Settings
1� Verify that the external 24 VDC power is turned off before connecting the detector�
2� After applying 24 VDC power, after tests (i�e�, butane lighter, FSC test lamp, or test fires), or after
resetting the detector, wait at least thirty seconds to allow its sensors to normalize to the spectral
background conditions�
3� To activate SW1/SW2/SW3 setting changes, reset the detector by cycling the power�
4� For applications requiring analog/digital communications, refer to
27�
"Configuring the Detector" on page
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