6
3. Terminals
Provided for the connection of the 120 volt supply and for
external connections for field wiring.
4. Relays
Provided for water level and pump controls.
5. Wiring/Controls
All devices and wiring are in accordance with the latest
UL/NFPA 70 requirements. Each device is UL listed or
recognized and bears the UL label or stamp. As
standard, flexible conduit is used. Or, in accordance with
specifications, thin wall or seal tight may be used to
connect controls to main panel box.
G. Combustion
Safeguard
1. Thermocouple
Pilots
Thermocouple pilots and controls are standard on
models below 400,000 BTUs.
2. Solid State Control
Spark-ignited pilot (intermittent) models may be provided
on all models with electronic combustion safeguard
controls. These pre-programmed solid state controls are
mounted adjacent to the burner, provide safe start
sequencing of the burner during start-up, run, normal
shutdown, and safety shutdown.
H. 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 Code. In accordance with the
ASME Code, 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 "M" symbol for 100 psi design units or with the
"S" symbol for 125 psi and greater designs. One copy of
the ASME data sheet is provided to the purchaser. One
copy is sent to the National Board of Pressure Vessel
Inspectors. The original copy is archived 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/Pressure
Controls
All burner and boiler controls are checked for circuit
continuity after wiring is complete. Factory fire testing
may be requested as on option on some sizes.
I.
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.
J. Guarantees
1. Efficiency
The boiler package is guaranteed to operate at a
minimum of 75% or greater, fuel input to steam pounds
per hour output efficiency.
2. Warranty
The complete package is warranted for a period of one
(1) year from the date of initial start-up or 18 months
from the date of shipment or notice to ship, whichever
occurs first.
3. Damage
This guarantee does not include items that are
damaged due to circumstances of carelessness,
neglect, or operating the unit beyond its capacity and
rating.
