How Does a Flame Safeguard Work on a Boiler? Burner Management System Explained. - The Boiling Point

How Does a Flame Safeguard Work on a Boiler? (Full BMS Startup Sequence Explained)

Every boiler startup must go through a series of critical safety checks — and the Flame Safeguard/Burner Management System (BMS) is the brain behind it all. In this episode of The Boiling Point, Richie Ware and the WARE team break down exactly what a flame safeguard does before, during, and after burner ignition.

📌 What You’ll Learn:

What is a flame safeguard on a boiler?

What is a burner management system (BMS)?

How does the ignition trial and pilot proving work?

How does a boiler purge cycle prevent explosions?

What's the difference between Fireye, Honeywell, and Autoflame systems?

Why does a boiler lock out during startup?

📍 Boiler Flame Safety — Chapter Markers
00:00 — Flame safeguard introduction
00:16 — What the BMS checks before startup
00:45 — Gas valve confirmation / proving closed
01:08 — Pre-purge sequence & airflow proving
01:29 — Ignition trial & pilot proving
01:50 — Main flame validation / flame scanner signals
02:55 — Running interlocks & airflow safety
03:40 — Lockout behavior and alarms
04:21 — Safe shutdown & post-purge
05:52 — Cold start considerations and refractory protection
06:29 — Modern BMS vs legacy systems
07:08 — Flame safeguard jumpers & customization
10:03 — Fireye overview (red box)
14:56 — Honeywell overview (blue box)
15:36 — What a BMS actually controls in the boiler
16:20 — Autoflame flame safeguard benefits
17:02 — Upgrading to parallel positioning
18:44 — Why downloadable data & password protection matter
19:34 — Demonstration of burner modulation control
22:13 — Purge & light-off sequencing with relays
24:17 — Linking flame safeguard with pressure control
26:12 — Unlocking Autoflame for full modulation control
26:40 — Part numbers & installation resources

✅ Need Flame Safeguard Parts or Support?

BoilerWAREhouse can ship Fireye, Honeywell, and Autoflame controls fast:
👉 BoilerWAREhouse.com — Parts You Need. People You Trust.


© 2025 @wareboilers. All rights reserved. Unauthorized reproduction or distribution of this content is prohibited. Ware Boilers’ videos are intended for promotional purposes only and does not constitute professional advice. Please contact our boiler professionals via https://www.wareinc.com/ with specific questions or repair needs. You should not attempt any boiler repair or modification without first consulting with a licensed contractor and the manufacturer. Ware Boilers does not warrant the accuracy, completeness, or usefulness of information available on this YouTube page. Nothing contained in or provided in any of Ware Boilers’ videos is intended to constitute advice or to serve as a substitute for a licensed contractor’s inspection or manufacturer specifications. Any reliance you place on such information is strictly at your own risk.

WARE is All Ways Steam!