Description
The Reznor 193806 is a factory-specified pressure switch engineered to deliver accurate, dependable airflow and pressure sensing in Reznor heating equipment. Designed as a direct OEM replacement, this switch integrates seamlessly into the system’s safety circuit to verify proper draft and combustion airflow before allowing ignition to proceed — protecting both equipment and occupants.
Key Features
- Setpoint: .20″ water column (“wc) — factory-calibrated for precise pressure detection
- Switch type: SPDT (Single Pole Double Throw) — supports both normally open and normally closed circuit configurations
- Dual 1/4″ barb connections — accommodates two-port pressure sensing for differential or redundant monitoring
- OEM-specified replacement part for compatible Reznor heating units
- Compact, reliable design built for long service life in commercial and industrial heating applications
Application
This pressure switch is a critical safety component in Reznor gas-fired unit heaters and warm air furnaces. It monitors the pressure differential created by the draft inducer motor to confirm adequate venting airflow. If the required pressure is not achieved — indicating a blocked flue, failed inducer, or restricted vent — the switch interrupts the ignition sequence, preventing unsafe operation.
Why Choose the Reznor 193806?
- Direct OEM replacement ensures proper fit, function, and system compatibility
- SPDT switching logic provides flexible wiring options for control board integration
- Dual 1/4″ barb ports simplify hose connections to the pressure sensing tap and reference port
- Calibrated .20″wc setpoint maintains the precise safety threshold required by the equipment design
Reviews
There are no reviews yet.