Discovery Carbon Monoxide (CO) Fire Detectors
Installation Guide
FIRE DETECTORS LIMITED
General
This product is not a smoke detector or general purpose fire detector, neither is it a carbon monoxide
gas leakage alarm.
Use only in accordance with the instructions given in PIN sheet PP2089,
available on request from Apollo Fire Detectors
.
Siting
CO detectors should be sited using the recommendations for smoke detectors from BS5839: Part 1 (or
other applicable code).
Wiring
L1 should be connected to the negative line for compatibility with negative isolators and polarity sensitive
devices.
Wiring diagram of Discovery loop with one remote indicator
+
–
From control panel
L2
L1
R+
R–
L2
L1
R+
R–
L2
L1
R+
R–
Loop return to
control panel
EARTH
EARTH
EARTH
ττ
ττ
ττ
This product is polarity sensitive (L1 is –ve and L2 is +ve). It is not electrically compatible with the
standard isolating base (45681-321) up to Build Standard 3A or the Discovery Test Set.
Discovery Carbon Monoxide (CO) Fire Detectors
Installation Guide
FIRE DETECTORS LIMITED
General
This product is not a smoke detector or general purpose fire detector, neither is it a carbon monoxide
gas leakage alarm.
Use only in accordance with the instructions given in PIN sheet PP2089,
available on request from Apollo Fire Detectors
.
Siting
CO detectors should be sited using the recommendations for smoke detectors from BS5839: Part 1 (or
other applicable code).
Wiring
L1 should be connected to the negative line for compatibility with negative isolators and polarity sensitive
devices.
Wiring diagram of Discovery loop with one remote indicator
+
–
From control panel
L2
L1
R+
R–
L2
L1
R+
R–
L2
L1
R+
R–
Loop return to
control panel
EARTH
EARTH
EARTH
ττ
ττ
ττ
This product is polarity sensitive (L1 is –ve and L2 is +ve). It is not electrically compatible with the
standard isolating base (45681-321) up to Build Standard 3A or the Discovery Test Set.