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MAIN FLAME
TEST
(LOW NOX
PACKAGE)
1.
Familiarize
yourself
with
the
components of the burner and
the
low
NOx package.
2.
Install and
calibrate NOx
analyzer
in
boiler stack.
3.
Turn boiler on
FIRING NATURAL
GAS
in
the manual mode.
4.
Place boiler on HOLD
once low
fire
is achieved.
5.
Allow
boiler
to "warm
up" until
operating boiler pressure
is
achieved.
6.
Adjust
steam
valve mercury
switch to 1
psi.
7.
Observe flame and
adjust steam
flow
and excess oxygen.
8.
Modulate
the
burner
to
high
fire, adjusting the steam valve and gas valve
until the
proper
NOx and excess
oxygen
levels
are reached.
9.
Adjust steam regulator to give desired steam flow at
high
fire.
10.
Modulate
burner
from
high
fire to
low
tire several
times in
increments
;
adjusting the
steam flow and gas
valve to achieve the desired rates.
11. Turn
boiler OFF and switch
to back
up fuel
(ff so equipped)
.
WARNING:
The
second
fue
l is
meant
as a standby
fuel only.
Do
not operate on the
second fuel unless a
natural
gas curtailment
is in
effect.
12.
Modulate burner
to
high
fire
and adjust steam
regulator until
desired NOx
level
is
achieved.
13.
Adjust fuel valve
until
proper excess air level
is
reached.
Section 5
-
Start-up
23
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