Reznor 196855 Burner Orifice
The Reznor 196855 Burner Orifice is a high-precision OEM replacement part engineered for specific commercial and industrial gas-fired unit heaters. This #19 drill size orifice is factory-calibrated for natural gas (NG) applications, typically found in PREEVA series units like the Reznor SDH 75 or Reznor RDH 75. In a combustion system, the orifice is a critical component that meters the fuel flow to the burner assembly. A worn or mismatched burner gas orifice can lead to incomplete combustion, carbon buildup, or erratic BTU output, compromising the efficiency of the heat exchanger. For contractors performing a gas conversion or manifold servicing, utilizing this machined brass orifice ensures the manifold pressure aligns with the unit’s nameplate specifications. Maintaining precise aperture dimensions is non-negotiable for achieving the correct stoichiometric ratio in high-demand HVAC environments where reliability is paramount.
Key Benefits:
- Precision Machined Housing: Optimized for the Natural Gas #19 specification to maintain consistent manifold flow.
- Direct OEM Compatibility: Ensures an exact fit for Reznor PREEVA series heaters, eliminating the risks associated with universal or re-drilled parts.
- Optimal Combustion Performance: Correctly manages fuel-to-air ratios to prevent soot accumulation and maximize HVAC efficiency.
- Industrial Grade Durability: Solid brass construction resists thermal stress and corrosion within the burner box.
Common Questions:
Is the Reznor 196855 compatible with propane?
No, this part is specifically a Natural Gas burner orifice. For Liquid Propane (LP) conversions, a different drill size orifice and regulator spring kit are required to meet the higher pressure requirements of propane fuel.
How do I verify if this fits my specific unit?
Check the rating plate on your Reznor unit heater. This orifice is most commonly utilized in Size 75 heater configurations. Always cross-reference the model number and serial number in the technical manual before installation.
What are the symptoms of a failing burner orifice?
Common indicators include persistent yellow flames, evidence of "lifting" flames, or erratic ignition. If the orifice is clogged or the bore has been compromised, it will fail to deliver the precise BTU input required for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Reznor 196855 Burner Orifice
The Reznor 196855 Burner Orifice is a high-precision OEM replacement part engineered for specific commercial and industrial gas-fired unit heaters. This #19 drill size orifice is factory-calibrated for natural gas (NG) applications, typically found in PREEVA series units like the Reznor SDH 75 or Reznor RDH 75. In a combustion system, the orifice is a critical component that meters the fuel flow to the burner assembly. A worn or mismatched burner gas orifice can lead to incomplete combustion, carbon buildup, or erratic BTU output, compromising the efficiency of the heat exchanger. For contractors performing a gas conversion or manifold servicing, utilizing this machined brass orifice ensures the manifold pressure aligns with the unit’s nameplate specifications. Maintaining precise aperture dimensions is non-negotiable for achieving the correct stoichiometric ratio in high-demand HVAC environments where reliability is paramount.
Key Benefits:
- Precision Machined Housing: Optimized for the Natural Gas #19 specification to maintain consistent manifold flow.
- Direct OEM Compatibility: Ensures an exact fit for Reznor PREEVA series heaters, eliminating the risks associated with universal or re-drilled parts.
- Optimal Combustion Performance: Correctly manages fuel-to-air ratios to prevent soot accumulation and maximize HVAC efficiency.
- Industrial Grade Durability: Solid brass construction resists thermal stress and corrosion within the burner box.
Common Questions:
Is the Reznor 196855 compatible with propane?
No, this part is specifically a Natural Gas burner orifice. For Liquid Propane (LP) conversions, a different drill size orifice and regulator spring kit are required to meet the higher pressure requirements of propane fuel.
How do I verify if this fits my specific unit?
Check the rating plate on your Reznor unit heater. This orifice is most commonly utilized in Size 75 heater configurations. Always cross-reference the model number and serial number in the technical manual before installation.
What are the symptoms of a failing burner orifice?
Common indicators include persistent yellow flames, evidence of "lifting" flames, or erratic ignition. If the orifice is clogged or the bore has been compromised, it will fail to deliver the precise BTU input required for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Reznor 196855 Burner Orifice is a high-precision OEM replacement part engineered for specific commercial and industrial gas-fired unit heaters. This #19 drill size orifice is factory-calibrated for natural gas (NG) applications, typically found in PREEVA series units like the Reznor SDH 75 or Reznor RDH 75. In a combustion system, the orifice is a critical component that meters the fuel flow to the burner assembly. A worn or mismatched burner gas orifice can lead to incomplete combustion, carbon buildup, or erratic BTU output, compromising the efficiency of the heat exchanger. For contractors performing a gas conversion or manifold servicing, utilizing this machined brass orifice ensures the manifold pressure aligns with the unit’s nameplate specifications. Maintaining precise aperture dimensions is non-negotiable for achieving the correct stoichiometric ratio in high-demand HVAC environments where reliability is paramount.
Key Benefits:
- Precision Machined Housing: Optimized for the Natural Gas #19 specification to maintain consistent manifold flow.
- Direct OEM Compatibility: Ensures an exact fit for Reznor PREEVA series heaters, eliminating the risks associated with universal or re-drilled parts.
- Optimal Combustion Performance: Correctly manages fuel-to-air ratios to prevent soot accumulation and maximize HVAC efficiency.
- Industrial Grade Durability: Solid brass construction resists thermal stress and corrosion within the burner box.
Common Questions:
Is the Reznor 196855 compatible with propane?
No, this part is specifically a Natural Gas burner orifice. For Liquid Propane (LP) conversions, a different drill size orifice and regulator spring kit are required to meet the higher pressure requirements of propane fuel.
How do I verify if this fits my specific unit?
Check the rating plate on your Reznor unit heater. This orifice is most commonly utilized in Size 75 heater configurations. Always cross-reference the model number and serial number in the technical manual before installation.
What are the symptoms of a failing burner orifice?
Common indicators include persistent yellow flames, evidence of "lifting" flames, or erratic ignition. If the orifice is clogged or the bore has been compromised, it will fail to deliver the precise BTU input required for safe operation.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
