Macurco GD-2A Combustible Gas Detector for use with Fire Alarm/Burglary Control Panels
The GD-2A is a low-voltage (12-24 VAC or VDC) detector for combustible heating gases - methane (natural gas) and propane (LP) - in residential, multi-family and commercial office spaces. It is designed for connection to fire alarm / burglary control panels through its alarm and trouble relays, and a 12 or 24 VDC panel can provide battery backup. It has no internal sounder and does not detect carbon monoxide, smoke or fire.
Key Features
- 12-24 VAC or VDC input
- Detects methane (natural gas) and propane (LP)
- Flush or surface mount enclosure
- N.O. or N.C. alarm relay (SPDT) and N.C. trouble/supervisory relay
- Self-restoring or latching operation
- Solid-state sensor (5-year), no recalibration required
- Coverage area: 900 sq. ft.
- Alarm setpoint 25% LEL per UL 1484
- Listed to UL 2075; California State Fire Marshal listed
Specifications
| Input voltage |
12 to 24 VAC or VDC |
| Current (non-alarm) |
45 mA @ 12 VDC, 22 mA @ 24 VDC, 65 mA @ 12 VAC, 45 mA @ 24 VAC |
| Current (alarm) |
70 mA @ 12 VDC, 35 mA @ 24 VDC, 100 mA @ 12 VAC, 65 mA @ 24 VAC |
| Alarm relay rating |
0.125 A, 40 V, 3 VA |
| Trouble relay rating |
0.250 A, 40 V, 10 VA |
| Alarm set point |
25% LEL (per UL 1484) |
| Operating temperature |
32 to 120 F |
| Size |
4-1/2 x 5 x 1-5/8 in. |
| Color |
White |
Compatible With
- UL Listed fire alarm / burglary control panels (12 or 24 V)
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