Honeywell Sensor and Switch Solutions for HVAC

Overview of Honeywell Product Lines for HVAC

The following chart details various Honeywell product lines applicable to HVAC systems, with '*' indicating focus products:

✓ 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

An efficient ventilation system responds to real-time data to optimize air recirculation, improving air quality and reducing HVAC running costs. Demand control ventilation systems meet the needs of growing trends for more environmentally friendly buildings with better indoor air quality.

Features:

• Measures differential pressure for static duct pressure and indoor air quality.
• Adjusts ventilation rates as the sensor is highly sensitive to carbon dioxide in the air.
• Senses CO₂ in demand control & energy recovery ventilation.
• High-quality CO detection in residential or commercial environments.
• Helps control indoor air quality.
• Enables efficient control of electric motors that drive fans, blowers, and pumps.
• Used in HVAC temperature controllers and for thermostat control.
• Provides high-performance mechanical switching on direct-acting damper actuators.
• Activates or deactivates an element or the entire ventilation system.

Key Components:

• Board-Mount Pressure Sensors: Measure differential pressure for static duct pressure and indoor air quality.
• CO₂ Sensor: Senses CO₂ for demand control and energy recovery ventilation, adjusting ventilation rates based on air quality.
• CO Sensor: Detects carbon monoxide in residential or commercial environments to help control indoor air quality.
• Magnetic Sensor ICs: Enable efficient control of electric motors.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Basic Switch: Provides high-performance mechanical switching on damper actuators.
• Pushbutton Switch: Activates or deactivates system elements.

Air Purification & Filter Monitoring

Recent trends emphasize cleaner and healthier air, increasing the need for air purification and filter monitoring. Sensors are critical for ensuring systems operate as intended and at peak performance.

Functionality:

• Controls airflow into a room or duct.
• Sensors enable monitor valves to control air volume for maximum energy efficiency.
• Used to monitor differential pressure for clogged filter detection, improving air quality and reducing power consumption.
• Used as air-proving switching assemblies and for mechanical switching for valve position detection.
• Used in HVAC temperature controllers and for thermostat control.
• Used to monitor mass airflow for VAV controllers and in-line transmitters, balancing airflow in complex HVAC systems.
• Provides motor and fan control, position sensing, and speed sensing for moving parts.

Key Components:

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

Air Conditioning

Air conditioning systems, whether centralized or standalone, cool and filter air. New refrigerants improve system efficiency, requiring durable sensors and switches with stable temperatures and burst pressures.

Applications:

• Monitors air conditioning compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Used to monitor differential pressure for clogged filter detection to improve air quality.
• Used in HVAC temperature controllers and for thermostat control.
• Enables efficient control of electric motors that drive fans, blowers, and pumps.

Key Components:

• Heavy-Duty Pressure Transducers: Monitor 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.

Heating System: Commercial

Commercial boilers heat water and air for distribution throughout buildings. Energy efficiency and safety are paramount. Honeywell sensors enhance efficiency and detect faults and leaks.

Key Functions:

• Monitors boiler water/steam output and input pressure to enhance system efficiency and reduce power consumption.
• Used to monitor mass airflow for VAV controllers and in-line transmitters.
• Monitors the flow of warm air or water within the heating system to enhance system efficiency.
• Enables efficient control of electric motors that drive fans, blowers, and pumps.
• Measures CO levels, as incomplete combustion can produce carbon monoxide, a risk from gas-burning products.
• Placed on gas pilots to shut off gas flow if the pilot goes out.
• Activates or deactivates system elements.
• Monitors steam pressure (overpressure or low pressure indication) in boilers to prevent explosive situations.
• Acts as air-proving switching assemblies or as a float switch for indicating pipe flow backup.
• Limit Switch: Monitors damper or valve position; starts program sequence when fully open.

Key Components:

• Heavy-Duty Pressure Sensors: Monitor boiler pressures.
• Airflow Sensors: Monitor mass airflow for VAV controllers.
• Board Mount Pressure Sensors: Monitor flow of warm air or water.
• CO Sensors: Measure CO levels from incomplete combustion.
• Thermal Sensors: Monitor flow of warm air or water.
• Magnetic Sensor ICs: Enable motor and fan control.
• Limit Switch: Monitors damper/valve position.
• Pushbutton Switch: Activates/deactivates system elements.
• Pressure Switch: Monitors steam pressure.

Heating System: Residential

Residential heating systems distribute heated air or water. Energy efficiency, reliability, and safety are key. Honeywell sensors improve efficiency and detect faults and leaks.

Applications:

• Controls the flow of warm air or water and detects leaks.
• Detects incomplete combustion, as carbon monoxide is a hazardous gas produced by incomplete fuel combustion.
• Used in smart thermostats to efficiently manage HVAC systems and improve occupant comfort.
• Enables efficient control of electric motors that drive fans, blowers, and pumps.
• Activates or deactivates system elements.

Key Components:

• Board Mount Pressure Sensors: Control airflow and detect leaks.
• CO Sensors: Detect incomplete combustion.
• Temperature Sensors: Used in smart thermostats for efficient HVAC management.
• Magnetic Sensor ICs: Enable efficient control of electric motors.
• Pushbutton Switch: Activates or deactivates system elements.

Refrigeration

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

Key Functions:

• Monitors refrigeration compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Provides presence detection, on/off function, function monitoring, and end-of-travel in Zone 2 hazardous locations.
• Used in temperature controllers and for compressor temperature monitoring in refrigeration.
• Enables efficient control of electric motors that drive fans, blowers, and pumps.
• Activates or deactivates system elements.
• Monitors overpressure or low pressure indication to prevent potentially explosive situations.

Key Components:

• Heavy-Duty Pressure Sensors: Monitor compressor pressures.
• Basic Switch: Provides presence detection and on/off functions.
• Thermal Sensors: Used in temperature controllers and for compressor temperature monitoring.
• Magnetic Sensor ICs: Enable efficient control of electric motors.
• Toggle Switch: Activates or deactivates system elements.
• Pushbutton Switch: Activates or deactivates system elements.
• Pressure Switch: Monitors overpressure or low pressure.

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 (FC/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 (FC/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 allow 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 (SM351RT/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/ /SM351RT/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 electrochemical cell designed for the detection of carbon monoxide in domestic/residential CO detection, industrial fire detection and ventilation control; Unique design for use in extreme environments; Suitable for use in BS, EN, UL, LPC, VDS and TÜV accredited products; Features an integrated active filter to eliminate false alarms caused by 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 of 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 manufactured goods to be free from defective materials and faulty workmanship. The standard Honeywell product warranty applies unless otherwise agreed in writing. For specific warranty details, refer to your order acknowledgment or consult your local sales office. If warranted goods are returned during the coverage period and found defective by Honeywell, Honeywell will, at its option, repair or replace them without charge. 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.

While Honeywell may provide information or engineering support, it is the buyer's sole responsibility to determine the suitability of Honeywell products for their requirements. Specifications are subject to change without notice.

For More Information

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

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

Document Number: 009636-3-EN | Revision: 3 | Date: 07/25
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