General Description
1-2
750-136
Model WB Electric Boiler Manual
1.1.2 — Abbreviations
Following is an explanation of the abbreviations, acronyms, and symbols used in this manual.
1.2 — Application
The Cleaver-Brooks Models WB boilers come equipped with 75 wsi Incoloy elements. The boilers are designed
to operate in hot water heating systems, and to deliver maximum kilowatts in minimum space requirements. The
WB is ideal for new boiler applications or as a replacement unit to upgrade existing installations.
These boilers are also designed for use as supplemental heat for heat pump systems operating between 55º F
and 175º F, or standard hot water systems up to 250º F. (Higher temperature boilers are available on special
order.)
1.3 — Description
A typical Model WB hot water boiler system includes operating controls, elements, fuses, contactors, relief valve,
drain valve, etc.; wired, tested, and ready for installation.
The vessel construction complies with the ASME Boiler & Pressure Vessel Code, Section IV, and is suitable for
operation at pressures to 160 psig and temperatures to 250º F. All WB boilers carry the “H” stamp.
An 11” x 15” manhole is provided on the WB models 361 through 422, smaller boilers are supplied with hand-
holes as required by ASME Code, Section IV.
Abbreviation Explanation Abbreviation Explanation
ASME American Society of Mechani-
cal Engineers
LWCO Low Water Cut Off
AR Automatic Reset MR Manual Reset
BHP Boiler Horsepower pH Measure of the degree of acid-
ity or basicity of a solution
BTU British Thermal Unit P/N Part Number
C Degree Celsius PPB Parts Per Billion
F Degree Fahrenheit PPM Parts Per Million
Ft Feet PSI Pounds Per Square Inch
GPM Gallons Per Minute T Temperature
Ht Height TC Temperature Control
Hz Hertz TI Temperature Gauge
KW Kilowatt wsi Watts Per Square Inch
Lb Pound
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