CleaverBrooks CBLE, Operation And Maintenance Manual

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750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual 3-1
CHAPTER 3
Waterside Care and
Requirements
3.1 — Overview
The operator should be familiar with this chapter before attempting to place the unit into operation.
Although it is of prime importance, the subject of water supply and treatment cannot adequately be covered in this
manual. For specific information or assistance with your water treatment requirements, contact your Cleaver-
Brooks service and parts representative.
Feedwater equipment should be checked and ready for use. Be sure that all valves, piping, boiler feed pumps, and
receivers are installed in accordance with prevailing codes and practices.
Water requirements for both steam and hot water boilers are essential to boiler life and length of service. It is vital
care be taken in placing the pressure vessel into initial service. The waterside of new boilers and new or remodeled
steam or hot water systems may contain oil, grease, or other foreign matter. A method of boiling out the vessels to
remove the accumulations is described later in this chapter.
Boilers, as a part of a hot water system, require proper water circulation. The system must be operated as intended
by its designer in order to avoid thermal shock or severe, possibly damaging, stresses from occurring to the pres-
sure vessel.
3.2 — Water Requirements: Hot Water Boiler
3.2.1 — Air Removal
The hot water outlet includes a dip tube which extends 2 to 3 inches into the boiler. The dip tube reduces the pos-
sibility of air, which may be trapped at the top of the shell, from entering into the system. Oxygen or air released in
the boiler will collect or be trapped at the top of the boiler shell.
NOTE: This manual only covers boilers using water. Glycol solutions have different operating requirements, circula-
tion rates, temperatures, etc.