Gems Lattner, Instruction Manual

Page: 7 / 66

7
I. Factory Tests
1. Pressure Vessel
The boiler is subjected to an ASME certified hydrostatic
pressure test to ensure the pressure vessel meets the
standards of the ASME. In accordance with the ASME
Code (Section IV Heating Boilers or Section I Power
Boilers), this test is supervised by an independent
inspection agency. Upon acceptance of the test by the
authorized independent inspector, the unit is stamped
with the "H" symbol for 15 psi design units and with the
"S" symbol for 150 psi and greater designs. One copy of
the ASME data sheets is provided to the purchaser.
One copy is sent to the National Board of Pressure
Vessel Inspectors. The original copy is archive at
Lattner.
2. Boiler
Piping Hydro
Each Section I High Pressure Boiler ("S" stamped), is
subjected to an additional hydrostatic pressure test. This
test includes the integral steam and water trim piping
and the trim valves. An ASME P-6 piping hydro
certificate can be provided for an additional cost.
3. Burner/Controls
To ensure proper operation of the combustion
safeguard control, ignition, and main fuel light off the
burner manufacturer subjects the packaged burner to a
preliminary factory fire test. All burner and boiler
controls are checked for circuit continuity and operation
after mounting and wiring the burner onto the boiler.
J. Nameplates & Stamping
1. National Board of Pressure Vessel Inspectors
The National Board of Pressure Vessel Inspectors
registration number is stamped on the pressure vessel
along with the boiler serial number, year built, maximum
boiler output and minimum safety valve capacity. This
information is stamped on the top head of the pressure
vessel. A facsimile nameplate of this data stamping is
mounted near or on the front door of the boiler control
panel.