Model 6820 / 6820-EVS Installation Manual
LS10144-001SK-E
10-19
and the “Pre-Alarm” output will deactivate.
10.8 Smoke Alarm Verification
Figure 10-10 illustrates how the Smoke Alarm Verification cycle operates.
Figure 10-10 Smoke Verification Cycle
During the Confirmation Period if there is no alarm indication then the system will return to normal operation.
Table 10-5: Double Interlock Zone Operation
Inputs
Output Results
1st Addressable
Detector
x
x
x
x
x
x
x
x
2nd Addressable
Detector
x
x
x
x
x
x
x
x
Manual Release
Station
x
x
x
x
x
x
x
x
Interlock/Pressure
Switch
x
x
x
x
x
x
x
x
Normal
Pr
e-
Al
ar
m
Pr
e-
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Pre
-Ala
rm an
d Ge
ner
a
l
Al
ar
m
Re
lea
se an
d Gene
ral
A
la
rm
Re
lea
se an
d Gene
ral
A
la
rm
Re
lea
se an
d Gene
ral
A
la
rm
Re
lea
se an
d Gene
ral
A
la
rm
Re
lea
se an
d Gene
ral
A
la
rm
