[_____] degree C F] [air atomizing; filtered compressed air shall
be available for burner atomization and the maximum requirement
for each burner shall not exceed [_____] standard L/s scfm of air
at [_____] kPa (gage) psig]. Provide pressure reducing valve and
controls as required.
c.
Electric Ignition System: Burner shall be equipped with an
electric ignition system. System shall be either the high energy
ignition or glow rod type. Gas ignition system is not acceptable.
The high energy ignition system shall use stored energy to
develop 2000 Vdc pulses. The glow rod system shall use a low
voltage, carbon rod electrode which develops a tip temperature of
1427 degrees C 2600 degrees F. Provide ignition system complete
in all respects.
d.
Windbox: Construct of carbon steel plate not less than 10 gage
thickness with 6 mm 1/4 inch thick front plate. Design windbox to
provide even and uniform air entrance into the burner register and
seal weld to the boiler front wall. Provide windbox with support
legs.
e.
Purge Connection: Provide [steam] [air] purge connection,
properly valved, for purging oil from gun prior to removal from
burner.
**************************************************************************
NOTE: At the text below, provide aspirating system
only for boilers in which the expected furnace
pressure exceeds 1245 Pa 5 inches water.
**************************************************************************
[f.
Aspirating System: Provide an air aspirating system for the fuel
oil atomizer guide pipes to prevent blowback of hot furnace gases.
Aspirating system shall use approximately [_____] L/s scfmof
[_____] kPa (gage) psig compressed air.]
g.
Piping: Provide piping and flexible hoses for the guide pipe
purge [and aspirating] system[s]. Air from the forced draft fan
shall be used for guide pipe purging during normal operation.
h.
Material: All metal parts exposed to radiant heat, including the
atomizer shield, shall be of stainless steel or other approved
alloy.
i.
Fuel Oil Control Valve: Fuel oil will be supplied at [_____] kPa
(gage) psig and [_____] degrees C F at the inlet of the fuel
piping train. Size fuel oil automatic control valve for 103 kPa
15 psi differential pressure as specified in VAMS Section 15901N
CONTROLS AND INSTRUMENTATIONS BOILER PLANT.
j.
Fuel:
ASTM D 396, Grade no. [_____].
**************************************************************************
NOTE: At the text below, the designer shall make a
technical evaluation to determine if the forced
draft fan should be integrated with or mounted
separately from the windbox on the floor next to the
boiler. If the forced draft fan is to be mounted
separately, delete this paragraph and specify the
SECTION 15511N
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