MPH COLUMBIA BOILER COMPANY
3
INTRODUCTION
Series MPH Modified Scotch Boiler
The Columbia Multi-Pass Horizontal (MPH) boiler is a modified scotch boiler
designed for hot water, and/or low pressure steam applications. The pressure vessel
is available as a welded pipe boiler or a rolled tube boiler. These units are manufac-
tured to the specifications set forth by Section IV of the ASME Boiler and Pressure
Vessel Code. Boilers are inspected and stamped for conformity to requirements of
the National Board of Boiler and Pressure Vessel Inspectors. All boilers are designed
to be fired using No. 2 fuel oil, and/or natural, manufactured, or liquid propane (LP)
gas, and are powered by standard AC electrical service.
Columbia MPH hot water and low pressure steam boilers are typically shipped
knocked down (unassembled), but are also available factory packaged. All boilers are
furnished with a burner and boiler trim (the jacket is factory installed). Boiler trim con-
sists of the operating and limit controls, pump control and/or low water cut off
(LWCO) controls, and a safety valve. Factory packaged boilers are fully assembled
and test fired.
