SENSOR & SWITCH SOLUTIONS FOR HVAC

Product Overview

This brochure details Honeywell's extensive range of sensor and switch solutions specifically designed for Heating, Ventilation, and Air Conditioning (HVAC) applications. These products are crucial for optimizing system performance, improving air quality, and enhancing energy efficiency across various HVAC categories.

Honeywell Product Lines for HVAC Applications

The following table outlines Honeywell's product lines and their applicability across different HVAC categories:

✔ Primary sensor/switch used within application (key design consideration for OEM)

✔ Secondary sensor/switch used within application (not a key design consideration)

Demand Control Ventilation

Demand control ventilation systems respond to real-time data to optimize air recirculation, thereby improving air quality and reducing HVAC running costs. These systems help create more environmentally friendly buildings with better indoor air quality.

• Board Mount Pressure Sensors: Measure differential pressure for static duct pressure and indoor air quality.
• CO₂ Sensors: Adjust ventilation rates based on CO₂ levels, crucial for demand control and energy recovery ventilation.
• CO Sensors: Provide high-quality carbon monoxide detection in residential or commercial environments to help control indoor air quality.
• Magnetic Sensor ICs: Enable efficient control of electric motors driving fans, blowers, and pumps.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Basic Switches: Offer high-performance mechanical switching for direct-acting damper actuators.
• Pushbutton Switches: Activate or deactivate system elements or the entire ventilation system.

Variable Air Volume Control

Sensors monitor airflow into a room or duct, enabling monitor valves to control air volume for maximum energy efficiency. They are critical for ensuring the system operates as intended.

• Board Mount Pressure Sensors: Monitor and control variable airflow within ducting, ensuring proper air distribution to prevent hot and cold spots.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Airflow Sensors: Monitor mass airflow for VAV controllers and in-line transmitters, balancing airflow in complex HVAC systems.

Air Purification & Filter Monitoring

Recent trends emphasize cleaner and healthier air, increasing the need for air purification and filter monitoring. Sensors help detect clogged filters to improve air quality and reduce power consumption.

• Board Mount Pressure Sensors: Monitor differential pressure for clogged filter detection.
• Basic Switches: Used in air-proving switching assemblies and for mechanical switching for valve position detection.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Airflow Sensors: Monitor mass airflow for VAV controllers and in-line transmitters.
• Magnetic Sensor ICs: Provide motor and fan control, position sensing, and speed sensing for moving parts.

Air Conditioning

Air conditioning systems, whether centralized or standalone, provide cooling and filtration. Sensors enhance system efficiency and reduce power consumption.

• Heavy-Duty Pressure Sensors: Monitor air compressor output and input pressure.
• Board Mount Pressure Sensors: Monitor differential pressure for clogged filter detection.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Magnetic Sensor ICs: Enable efficient control of electric motors driving fans, blowers, and pumps.

Heating System: Commercial

Commercial boilers heat water and air for building heat. Sensors ensure energy efficiency and safety by detecting faults and leaks.

• Heavy-Duty Pressure Sensors: Monitor boiler water/steam output and input pressure for efficiency and reduced power consumption.
• Board Mount Pressure Sensors: Monitor warm air or water flow within the heating system for efficiency.
• CO Sensors: Measure CO levels, crucial for detecting incomplete combustion.
• Temperature Sensors: Placed on gas pilots to shut off gas flow if the pilot goes out.
• Pressure Switches: Monitor steam pressure to prevent potentially explosive situations.
• Airflow Sensors: Monitor mass airflow for VAV controllers and in-line transmitters.
• Magnetic Sensor ICs: Enable efficient control of electric motors driving fans, blowers, and pumps.
• Pushbutton Switches: Activate or deactivate system elements.
• Basic Switches: Used as air-proving switching assemblies or as float switches.
• Limit Switches: Monitor damper or valve position to start program sequences.

Heating System: Residential

Residential heating systems distribute heat efficiently, reliably, and safely. Honeywell sensors improve efficiency and detect faults and leaks.

• Board Mount Pressure Sensors: Control warm air or water flow and detect leaks.
• CO Sensors: Detect incomplete combustion, identifying odorless, colorless carbon monoxide gas.
• Temperature Sensors: Manage HVAC systems efficiently and improve occupant comfort.
• Magnetic Sensor ICs: Enable efficient control of electric motors driving fans, blowers, and pumps.
• Pushbutton Switches: Activate or deactivate system elements.

Refrigeration Systems

Refrigeration systems maintain temperatures below ambient levels. New refrigerants improve efficiency, requiring durable sensors and switches with stable temperatures and burst pressures.

• Heavy-Duty Pressure Sensors: Monitor refrigeration compressor output and input pressure for efficiency and reduced power consumption.
• Basic Switches: Detect presence, on/off function, function monitoring, and end-of-travel in hazardous locations.
• Thermal Sensors: Used in temperature controllers and for compressor temperature monitoring.
• Magnetic Sensor ICs: Enable efficient control of electric motors driving fans, blowers, and pumps.
• Toggle Switches: Activate or deactivate system elements.
• Pushbutton Switches: Activate or deactivate system elements.
• Pressure Switches: Monitor overpressure or low pressure to prevent potentially explosive situations.

Detailed Product Specifications

Pressure Sensors and Transducers

• Board Mount Pressure Sensors, Basic ABP/ABP2 Series: Pressure range: 1 inH₂O to 175 psi. High accuracy, TEB: 1.5%FSS. Temp compensated: -40°C to 110°C. Temp operating: -40°C to 110°C. Extensive media compatibility. Analogue & digital (I²C/SPI). Best for configurability & value.
• Board Mount Pressure Sensors, TruStability™ RSC, HSC and SSC Series: Pressure range: 0.5 inH₂O to 150 psi. High accuracy, TEB: 1.0%FSS. Temp compensated: -40°C to 85°C. Temp operating: -40°C to 85°C. Outstanding EMI/EMC performance. Analogue & digital (I²C/SPI). Best for accuracy, stability & performance.
• Heavy Duty Pressure Transducers, MIP Series: Pressure range: 15 psi to 900 psi. High accuracy, TEB: 0.75 %FSS. Temp operating: -40°C to 125°C. Compatible with a wide range of fluids and gases. Rugged stainless steel 304L construction. Outstanding EMI/EMC performance. Best for accuracy, stability & performance.

Hall-Effect and Magnetoresistive Sensor ICs

• Linear Hall-Effect Sensor ICs, SS490 Series: Small size with low power consumption. Single current sinking or current sourcing linear output. Built-in laser trimmed thin-film resistors for sensitivity and temperature compensation. Responds to either positive or negative gauss. Quad Hall sensing element for stable output.
• Magnetoresistive Sensor ICs, Nanopower Series (SM351LT/SM353LT); Standard Power Series (SM-351RT/SM451R/SM353RT/SM453R): SOT-23 package (SM351LT/SM353LT/SM351RT/SM353RT); flat TO-92-style (SM451R/SM453R). Sensitivity of 7 G typ., 11 G max. (SM351LT//SM-351RT/SM451R); 14 G typ., 20 G max. (SM353LT/SM353RT/SM453R). Omnipolar sensing activates with either pole from a magnet.
• High Sensitivity Latching Hall Sensors (SS360ST/NT/PT and SS460S for BLDC commutation): Fastest response time in its class. No chopper stabilization. High sensitivity; operates from only 30 gauss typ. Bipolar latching magnetics. Can be supplied on tape-and-reel.

Temperature Sensors

• Thermistors, 192/194 Series: High quality, low-cost, resistance temperature-matched interchangeable units. Dissipation constant in still air: 0,75 mW/°C. Time constant in air: 15.0 s. Maximum diameter: 2,413 mm [0.095 in]. Resistance temperature curve, interchangeability, enhanced stability and life, epoxy coated.

Gas Sensors

• Carbon Dioxide Gas Sensor, CRIR-M1 Series: Single channel, non-dispersive infrared (NDIR) sensor for detecting Carbon Dioxide. Small size. Maintenance free for normal indoor applications. Enhanced long term stability. Higher accuracy: ±40 ppm ±3% of reading. Consistency and repeatability. Auto baseline correction (ABC).
• Carbon Monoxide Gas Sensor, ECOSURE X: Cost-effective two-electrode electromechanical cell for detecting carbon monoxide in domestic/residential CO detection, industrial fire detection and ventilation control. Unique design for extreme environments. Suitable for BS, EN, UL, LPC, VDS and TÜV accredited products. Features an integrated active filter to eliminate false alarms from common household vapors.

Airflow Sensors

• AWM3300 Series: Small size. Amplified signal conditioning. 30 SCCM to 5 mBar. Analog output. 50 mW typ. power consumption. -25°C to 85°C [-13°F to 185°F] range.

Micro Switch Basic Switches

• MICRO SWITCH Large Basic Switches, IBZ and WA Series; DT Series: Accepted world-wide standard "Large Basic" switch. Low operating force and differential travel. Long mechanical life up to 20,000,000 cycles at 95% survival. Current rating ranges from 15 A to 25 A. Choice of actuation, termination and operating characteristics. Two independent single-pole double throw circuits in one housing and actuator (DT).
• MICRO SWITCH V-Basic Miniature Switches, V19 Series: RoHS/REACH/Cal Prop65 compliant. UL/CSA, cUL, ENEC, CQC certifications enable global design acceptance and cost savings in agency approvals. 5 A, 16 A: electrical ratings for design flexibility in one industry standard package. > 1M mechanical operations.
• MICRO SWITCH V-Basic Miniature Switches, V15 Series: Designed from 10K to 50K operations at a full load or 5M for mechanical life. World-wide package size acceptance. Current rating ranges of 10 A and 26 A. UL/CSA, cUL, UKCA, ENEC, and CQC approvals.
• MICRO SWITCH Explosion-Proof Basic Switches, V15W2 Series: Approved for use in Zone 2 hazardous locations. IP67 equivalent. UL, CUL, UKCA, ENEC, CQC, ATEX, IEC Ex approvals. 5 A electrical rating. Longer service life: over one million mechanical operations.
• MICRO SWITCH Subminiature Switches, ZM/ZW/ZX Series: Best suited for lower cost-of-failure applications. Small, lightweight, low cost, enhanced life, ample electrical capability. Choice of low energy or power-duty electrical ratings (gold-plated or silver contacts). Choice or ratings, actuation, termination and operating characteristics. UL/CSA, CUL, ENEC, and CE approvals.

Micro Switch Toggle Switches

• MICRO SWITCH Toggle Switches, NT Series: ISA 12.12.01 certified; designed for use near flammable hydrocarbon refrigerants. Quick-connect spade terminals. UL191 electrical rating. Sealed to NEMA 3, 3R, 4, 13, and IP67. Operating temperature range: -40 °C to 71 °C [-40 °F to 160 °F].

Micro Switch Pushbutton Switches

• Operator Interface Switches and Indicators, AML Series: Pushbuttons, paddles, rockers, key-actuated, and indicators within AML Series for coordinated panel appearance. Less than 1.75 inch panel depth. Two or three positions and maintained or momentary action. One-, two-, or four-poles with double throw available for most switches.

Pressure Switches

• Extended Duty Pressure Switches, 5000 Series: Specifically designed to stand up to extended duty applications. Factory set but capable of field adjustment. Direct action blade contact. Burst pressure: 750 psi for 0.5 psi to 24 psi set point range; 1250 psi for 25 psi to 150 psi set point range.

Warranty and Remedy

Honeywell warrants its goods of its manufacture as being free of defective materials and faulty workmanship. Honeywell's standard product warranty applies unless agreed to otherwise in writing. If warranted goods are returned during the coverage period, Honeywell will repair or replace, at its option, without charge, those items that Honeywell, in its sole discretion, finds defective. This is the buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Honeywell shall not be liable for consequential, special, or indirect damages.

Honeywell may provide information or engineering support through its personnel, literature, and website. However, it is the buyer's sole responsibility to determine the suitability of Honeywell products for the buyer's requirements. Specifications are subject to change without notice. While the information supplied is believed to be accurate and reliable, Honeywell assumes no responsibility for its use.

For More Information

Honeywell Sensing Solutions services customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing, or the nearest Authorized Distributor, visit automation.honeywell.com/hss or call:

• USA/Canada: +302 613 4491
• Latin America: +1 305 805 8188
• Europe: +44 1344 238258
• Japan: +81 (0) 3-6730-7152
• Singapore: +65 6355 2828
• Greater China: +86 4006396841

Honeywell Sensing Solutions
830 East Arapaho Road
Richardson, TX 75081
www.honeywell.com