CleaverBrooks CBLE - Page 7

750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
vii
3.2.2 — Water Circulation 3-2
3.2.2.1 — Multiple Boiler Installations 3-3
3.2.2.2 — Pump Location 3-4
3.2.2.3 — Pump Operation 3-4
3.2.3 — Pressure 3-4
3.3 — Water Requirements: Steam Boiler 3-5
3.3.1 — Feed Pump Operation 3-5
3.3.2 — Water Feeder (optional) Operation 3-6
3.4 — Water Treatment 3-6
3.5 — Cleaning 3-7
3.5.1 — Hot Water and Steam Piping 3-7
3.5.2 — Pressure Vessel 3-7
3.6 — Boil-Out of a New Unit 3-8
3.7 — Washing Out 3-10
3.7.1 — Hot Water Boiler 3-10
3.7.2 — Steam Boiler 3-10
3.7.3 — Flushing of Pressure Vessel Interior 3-10
3.8 — Blowdown: Steam Boiler 3-10
3.8.1 — Intermittent Manual Blowdown 3-11
3.8.2 — Continuous Blowdown 3-11
3.8.3 — Frequency of Manual Blowdown 3-11
3.8.4 — Manual Blowdown Procedure 3-12
3.9 — Periodic Inspection 3-13
3.10 — Preparation for Extended Lay-Up 3-14
CHAPTER 4
Sequence of Operation 4-1
4.1 — Overview 4-1
4.2 — Circuit and Interlock Controls 4-2
4.3 — Sequence of Operation: Oil or Gas 4-3
4.3.1 — Pre-Purge Cycle 4-3
4.3.2 — Ignition Cycle 4-4
4.3.3 — Run Cycle 4-4
4.3.4 — Burner Shutdown: Post Purge 4-5