Fired Heater Tuning Guide
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This document provides a 3-step process for tuning a fired heater: 1. Check the flame pattern and firebox, clean the burner if needed, and ensure the flame is stable. 2. Measure the arch draft and adjust the stack damper to achieve the proper draft of 0.1 inches water column. 3. Measure excess oxygen levels, adjust burner air registers to achieve excess O2 of 3%, and ensure stable flame and proper draft.
Fired Heater Tuning Guide
- 1. Fired Heater Tuning Step 1: Check Flames/Firebox Open All Peepholes Increase Airflow Shutdown Burner; Clean Burner; Light up Recheck Flame Pattern/ Impingement Good Flame Check Arch Draft (See Step-2) Check Excess O2 (See Step-3) Close All Peepholes Is Flame OK? Check Flame Pattern/Impingement Bad Flames ? Hazy Firebox? NO YES YES NO
- 2. Fired Heater Tuning Step 2- Arch Draft Read Draft At Arch Close Stack Damper Open Stack Damper Check Flame Characteristic (See Step-1) Check Excess O2 (See Step-3) Is Draft OK ? LOW YES HIGH Arch Draft= 0.1￣ WC
- 3. Fired Heater Tuning Step 3- Excess O2 Read Excess O2 Close Burner Air Registers Open Burner Air Registers Check Flame Characteristic (See Step-1) Check Arch Draft (See Step-2) Is Excess O2 OK LOW YES HIGH Excess O2= 3%