Conspec’s parking garage carbon monoxide detector system initiates exhaust fans and alarms when Carbon Monoxide (CO) levels become unsafe. Easy installation and setup make this detector the preferred choice for CO detection in enclosed parking areas.
The Conspec 911154-1 Ventilation Fan Controller is designated for enclosed parking areas where carbon monoxide gases must be continually ventilated or have a gas detection device installed. Before an unsafe level of carbon monoxide is reached, the detector will signal ventilation fans to cycle and operate until the atmosphere in the area has returned to normal.
Multiple gas detectors can be installed and easily connected without the need for a central panel by a simple series connection of the controllers. LED indicator lights clearly show the status of the detector and a large LCD display continually shows the CO levels being monitored. In the event of a power loss or malfunction, the controller activates the ventilation system.
Electricity and heating expenses can be dramatically reduced due to the ventilation fans operating only when needed as opposed to continuously running. Energy savings of up to 85% can be achieved and in most cases, the return on the cost of the system is realized in one year or less!
| Feature | Benefits |
|---|---|
| Configured for Automation | Automatically activates exhaust fans and alarms when CO reaches unsafe levels to protect occupants. |
| Energy Efficient Design | Continuously monitors CO and runs ventilation only when needed, reducing fan runtime and energy use. |
| Reduces Operating Costs | Delivers significant energy savings (up to 85%) with typical payback in about one year. |
| Engineered for Vehicle Areas | Purpose-built for enclosed garages and vehicle service areas requiring continuous CO control. |
| Stand-Alone System | Series wiring enables easy expansion without a central panel for large facilities. |
| Protects Against Outages | Fail-safe operation automatically engages ventilation during power loss or system faults. |
| Carbon monoxide (CO) | |
|---|---|
| Sensor Technology | Electrochemical (EC) |
| Range | 0–500 ppm |
| Life Expectancy | 7 years |
| Response Time | T90 < 30 seconds |
| Electrical | |
|---|---|
| Operating Voltage | 3 W @ 24 VAC |
| Power Consumption | 0.1 A maximum |
| Mechanical | |
|---|---|
| Enclosure | NEMA 4X non-metallic (UL & CSA approved) |
| Dimensions | 4.5 × 4.0 × 2.5 in (114 × 102 × 64 mm) |
| Weight | 1.2 lb (544 g) |
| Mounting | Mounts to a standard 4×4 electrical junction box (mounting plate included) |
| Conduit Entry | 1/2 in (12.7 mm) |
| Display | 2-line, 8-character LCD |
| Environmental | |
|---|---|
| Operating Temperature | -4°F to +122°F (-20°C to +50°C) |
| Operating Humidity | 10–90% RH non-condensing |
| Temperature Compensation | Full range |
| I/O Capabilities | |
|---|---|
| Output Signals | 2 × dry contact SPDT relays (fan, alarm) rated 2 A, 30 VDC |
| Alarms | |
|---|---|
| Alarm Set Point | 4 different alarm set points |
| Onboard Alarms | 80 dB @ 3 ft (0.9 m) |
| Enclosed Parking Garages |
| Vehicle Maintenance Facilities |
| Boiler / Mechanical Rooms |
| Factories / Warehouses |
| Bus Terminals & Depots |
| Tunnels |
| Car Dealerships |
| Fire / Police Stations |
| City of Los Angeles Approved |
| P1879-XX-YYYY | Calibration Kit |
| P1880 | Calibration Gas |
| 911154-SN | Replacement sensor |
| 911154-PS | Power supply |
| 911118M | Infrared handheld programmer |
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ACES Monitoring specializes in commercial gas detection systems, including carbon monoxide (CO) and nitrogen dioxide (NO2) monitoring for parking garages, warehouses, and other enclosed facilities. With expertise in system design, installation, calibration, and maintenance, ACES helps customers integrate Conspec Controls’ gas detection solutions with ventilation systems to improve occupant safety, support code compliance, and optimize energy efficiency. ACES is an ideal partner for facility managers seeking comprehensive gas monitoring solutions and ongoing technical support.
C.G. Wood Company is an experienced manufacturer’s representative serving commercial and industrial HVAC markets throughout Maryland, Washington, D.C., and Virginia. Specializing in engineered HVAC solutions, C.G. Wood helps mechanical engineers, contractors, and building owners select equipment for demanding applications. Its partnership with Conspec Controls brings reliable gas detection and monitoring solutions to commercial ventilation, mechanical room safety, and other HVAC applications where performance, regulatory compliance, and occupant protection are essential.
Hawk Equipment Services specializes in gas detection equipment, system installation, calibration, and maintenance for commercial and industrial facilities. With experience in refrigerant leak detection, mechanical room monitoring, and hazardous gas safety systems, Hawk helps customers identify effective solutions for their specific applications. As a Conspec Controls partner, Hawk combines gas detection expertise with hands-on technical services to support HVAC-R safety, reliable system performance, and long-term equipment maintenance.
Melia Associates is a trusted HVAC manufacturer’s representative serving Connecticut and Western Massachusetts. With extensive experience in commercial ventilation, air distribution, and indoor air quality, Melia helps engineers, mechanical contractors, and building owners specify effective HVAC solutions. By offering Conspec Controls’ gas detection and monitoring products, Melia supports safer building environments through CO and NO₂ monitoring, refrigerant leak detection, and demand-controlled ventilation applications, backed by knowledgeable product selection and technical support.
Ontor is a Canadian master distributor and sales representative specializing in heating, ventilation, air conditioning, and refrigeration (HVAC-R) products. Serving HVAC wholesalers and equipment manufacturers throughout Canada, Ontor provides access to quality components and technical solutions for commercial and industrial applications. Its partnership with Conspec Controls expands access to gas detection systems for refrigerant leak monitoring, mechanical room safety, and commercial ventilation, helping Canadian HVAC-R professionals protect facilities and address evolving safety requirements.
