Reznor rz197029 Pressure Switch SFT45 173312

Product Description

The REZNOR rz197029 is a pressure switch designed for use in REZNOR unit heater applications. Pressure switches monitor airflow or draft conditions within the venting and heat exchanger circuit, providing a safety interlock that prevents burner operation when adequate airflow is not confirmed. This switch is a direct replacement component installed by licensed HVAC technicians servicing REZNOR heating equipment. It plays a critical role in safe furnace or unit heater operation by verifying proper inducer or combustion air pressure before allowing ignition to proceed.

The rz197029 pressure switch is specified for use with the REZNOR SFT45 unit heater, cross-referencing OEM part number 173312. It is suited for commercial and industrial heating environments where REZNOR gas-fired unit heaters are installed, such as warehouses, garages, and manufacturing facilities. Technicians replacing a failed or out-of-calibration pressure switch on an SFT45 unit should confirm the replacement matches the setpoint and port configuration of the original component before installation.

Key Features

• Direct OEM-style replacement for REZNOR SFT45 unit heater pressure switch
• Cross-references OEM part number 173312
• Provides combustion air or draft safety interlock function
• Prevents burner ignition when airflow conditions are not met
• Designed for commercial and industrial gas-fired unit heater applications

Compatibility

Specified as a replacement pressure switch for the REZNOR SFT45 unit heater, cross-referencing OEM part number 173312.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut off all gas and electrical supply to the unit heater before beginning any service work. Pressure switch tubing and port connections should be inspected for cracks or blockages before the new switch is installed. Refer to the unit manufacturer service manual and applicable local mechanical codes for proper installation and commissioning procedures.

Technical Specifications

• Application: REZNOR SFT45 unit heater
• Cross-Reference Part Number: 173312

Standard Information

• Brand: REZNOR
• Manufacturer Part Number: rz197029