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

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.

2 | D382 Combustible Gas Detector (Macurco GD-2A)