CleaverBrooks CBLE - Basics of Firetube Operation

750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
v
Model CB-LE Packaged Boiler 250-350 HP
750-91
Table of Contents
CHAPTER 1 Basics of Firetube Operation 1-1
1.1 — Introduction 1-1
1.2 — The Boiler 1-3
1.3 — Construction 1-4
1.4 — Steam Controls (All Fuels) 1-5
1.4.1 — Operating Limit Pressure Control 1-5
1.4.2 — High Limit Pressure Control 1-5
1.4.3 — Modulating Pressure Control 1-6
1.4.4 — Low Water Cutoff and Pump Control 1-6
1.4.5 — Water Column Assembly 1-7
1.4.6 — Water Column Drain Valve 1-7
1.4.7 — Water Gauge Glass Drain Valve 1-7
1.4.8 — Vent Valve 1-7
1.4.9 — Stack Temperature gauge 1-7
1.4.10 — Auxiliary Low-Water Cutoff 1-8
1.4.11 — Safety Valve(s) 1-8
1.5 — Hot Water Controls (All Fuels) 1-9
1.5.1 — Water Pressure and Temperature Gauge 1-9
1.5.2 — Operating Limit Temperature Control 1-9
1.5.3 — High Limit Temperature Control 1-9
1.5.4 — Modulating Temperature Control 1-9
1.5.5 — Low-Water Cutoff 1-9
1.5.6 — Auxiliary Low-Water Cutoff (optional) 1-10
1.5.7 — Safety Valve(s) 1-10
1.6 — IFGR Components 1-10
1.6.1 — Flue Gas Transfer Port, IFGR Damper, & Flange Collar 1-10
1.6.2 — IFGR Damper Linkage 1-10
1.6.3 — Over-Travel Mechanism 1-11
1.6.4 — Fuel Change-Over Linkage 1-11
1.6.5 — Fan/Motor Cassette 1-12
1.6.6 — Burner Drawer 1-12
1.6.7 — Combustion Air Inlet 1-12
1.6.8 — Front Door Insulation 1-12