Data Sheet

Certifications and approvals
3M (Macurco) holds the following Listings and
Approvals:
Region Certification
USA UL FTAM: Gas and Vapor Detectors and
Sensors (UL2075)
CSFM see our website
Installation/configuration notes
Compatibility Information
The combustible gas detector is compatible with all UL
Listed control panels that have four-wire power and
alarm initiating circuits.
Mounting Considerations
The detector is capable of supervising an area of up to
900 ft
2
(83.6 m
2
). In larger areas, space the detectors
on 30 ft (10 m) centers.
Natural gas (methane) is lighter than air and collects
at the ceiling. Bottle gas (propane) is heavier than air
and collects on the floor. Mount the detector 1 ft.
(0.3 m) from the floor, or 1 ft. (0.3 m) from the ceiling,
depending on the targeted gas. Mount the detector at
least 6 in. (15.2 cm) from corners to avoid dead air
space.
The detector mounts on a standard four-inch square
back box or a double-gang box.
Wiring Considerations
The combustible gas detector must be installed on a
separate circuit or zone reserved for combustible gas
detectors and cannot be combined with smoke, heat,
or intrusion detectors. Alarms for this circuit or zone
must activate audible notification appliances of at
least 85 dB with a distinctive sound for gas detection.
Use the indicated wire size for the detector loop:
Length of Wire Run Recommended Wire Size
200 ft (61 m) or less 22 AWG (0.8 mm)
Up to 575 ft (175 m) 20 AWG (1.0 mm)
Up to 686 ft (209 m) 18 AWG (1.2 mm)
Up to 1300 ft (396 m) 16 AWG (1.5 mm)
Up to 2100 ft (640 m) 14 AWG (1.8 mm)
Up to 3200 ft (975 m) 12 AWG (2.3 mm)
Parts included
Quant. Component
1 Combustible gas detector
1 Hardware pack
1 Literature pack
Technical specifications
Electrical
Current
Alarm: At 12 VDC: 70 mA; at 24 VDC: 35 mA
At 12 VAC: 100 mA; at 24 VAC: 65 mA
Standby: At 12 VDC: 45 mA; at 24 VDC: 22 mA
At 12 VAC: 65 mA; at 24 VAC: 45 mA
Voltage
VDC input: 12 VDC to 24 VDC
VAC input: 12 VAC to 24 VAC, 50 Hz or 60 Hz
Environmental
Temperature
(operating):
+32°F to +120°F (0°C to +49°C);
For UL installations, +40°F to +120°F (+4.4°C
to +49°C)
Mechanical
Color: White
Dimensions
(H x W x D):
4.5 in. x 5.0 in. x 1. 625 in.
(11.4 cm x 12.7 cm x 4.1 cm)
Weight (shipping): 0.54 lb (0.25 kg)
Outputs
Alarm
Relay Configuration: one SPDT (Form C)
Relay Rating: 0.125 A, 40 V, 3 VA
Set Point: 25% below LEL for propane or methane
Trouble
Relay Configuration: one SPST (Form A)
Relay Rating: 0.25 A, 40 v, 10 VA
Trademarks
All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.
Ordering information
D382 Combustible Gas Detector (Macurco GD-2A)
The D382 is installed in rooms where gas appliances
are located or rooms susceptible to gas seepage
where it detects the presence of combustible gases
such as propane and methane. It is compatible with all
UL Listed control panels with four-wire power and
alarm initiating circuits.
Order number D382
2 | D382 Combustible Gas Detector (Macurco GD-2A)