fan in paragraph entitled "Fans."
**************************************************************************
[k.
Forced Draft Fan: Fan shall be fully integrated with and mounted
on the windbox. Provide an inlet silencer, if required, to insure
operation at noise level below 85 dBA as specified in Section
15070N MECHANICAL SOUND VIBRATION AND SEISMI CONTROL.
l.
Electric Motor: Motor shall be [variable speed], [_____] volt,
[_____] phase, 60 Hz, [totally enclosed, non-ventilated] [totally
enclosed, fan cooled], not less than [_____] hp as specified under
"Motors and Drives" in this section.]
2.4.1.2
Flame Safeguard Controls
a.
General: Provide a complete system of valves, interlocks and
controls in accordance with NFPA 8501 and FM DS 12-17.
b.
Fuel Oil Train: Provide fuel oil train consisting of [steam]
[air] atomizing oil gun, auxiliary [steam] [air] atomizing oil gun
for changing guns without a shutdown, fuel oil control valve, two
safety shutoff valves, recirculation valve, strainer, and flexible
hose connections to oil burner. Provide low oil pressure and low
atomizing air pressure switches, and other safety interlocks and
devices as required. Provide in panel mounted on burner package
the following gages. Gages shall be 150 mm 6 inchdiameter with
white coated dials and black lettering:
(1)
Fuel oil supply pressure (0 to 1034 kPa (gage) 150 psig)
(2)
Fuel oil pressure at burner (0 to 1034 kPa (gage) 150 psig)
[(3) Atomizing air pressure at burner (0 to 1034 kPa (gage) 150
psig)]
[(4) Atomizing steam pressure at burner (0 to 1034 kPa (gage) 150
psig)]
c.
Control Sequencing: Flame safeguard system shall be designed to
insure safe purge, light-off and shutdown procedures, and to
monitor light-off, main flame and boiler operating conditions.
[(1) Control Type: Flame safeguard system shall be of the
automatically sequenced type with programming timed and sequenced
by a heavy duty, industrial type timer. This timer shall be
tamper-proof and shall be designed so that advancement of the
timer to shorten purge will shut down the unit.]
(2) Scanner and Relay: Provide system with [ultraviolet]
[infrared] scanner and electronic relay located in the front wall
which will shut down the fuel within 2 to 4 seconds of loss of
flame.
(3) Output Meter: Provide scanner output meter in panel for
indication of scanner signal strength.
(4) Limit Devices: Safety system shall include the following
limit devices incorporated into a limit circuit:
SECTION 15511N
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