13
Eclipse Winnox Burner, WX Series, V2, Installation Guide 111, 2/26/2010
Step 3: Ignite the Burner
Low Fire Start
Ŷ
These procedures are written with the assumption
the burner has a flame monitoring control system
installed and operating. A proper purge cycle must
be part of the system and purge timing should not
be bypassed.
Figure 4.5 Low Fire Start
1. Drive control motor to low fire.
2. Be sure combustion air blower is running.
3. Turn bias adjusting screw
X
on ratio regulator spring
column three complete turns (360°) counter-clockwise
(up) from the bottom.
4. Open main gas manual shut off valves.
5. With pressure taps open, connect the manometer
between
Tap E
and the chamber.
6. Set system control to stay at low fire during and after
ignition sequence.
7. Attempt to ignite burner.
8. During trial for ignition, adjust bypass pressure
regulator
Y
and adjustable limiting orifice
Z
to achieve
the appropriate
'
p between
Tap E
and the chamber as
listed in the appropriate datasheet.
NOTE:
If viewing the flame, it should be blue with flashes
of yellow. The flame should be completely within the
combustion tube. When firing propane or butane, a proper
low fire flame may have sustained flashes of yellow.
9. If burner does not ignite.
a. Shut off gas. When chamber temperature is below
250°F (121°C) shut off combustion air blower.
b. Restart combustion air blower, drive through purge
cycle and ignite the burner.
c. Measure low fire gas pressure to the burner gas inlet
[
. Verify pressure at
[
is within the range specified
on the datasheet for your burner.
10.After ignition, verify low fire flame:
a. Shut off gas. When chamber temperature is below
250°F (121°C) shut off combustion air blower.
b. Restart combustion air blower and ignite burner.
c. Measure low fire gas pressure to the burner gas inlet
[
. Verify pressure at
[
is within the range specified
on the datasheet for your burner.
d. Verify repeatability of ignition and low fire flame
signal.
NOTE:
If the flame signal is too low the bypass
pressure regulator
Y
and adjustable limiting orifice
Z
can be used to increase the pressure at Tap E
and provide better flame signal. However, this can
have a negative impact on emissions and/or nozzle
life.
11. Close all pressure taps.
Pilot Start Option
Ŷ
These procedures are written with the assumption
the burner has a flame monitoring control system
installed and operating. A proper purge cycle must
be part of the system and purge timing should not
be bypassed.
Figure 4.6 Low Fire Start with Pilot Start Option
1. Drive control motor to low fire.
2. Be sure combustion air blower is running.
3. Turn bias adjusting screw
X
on ratio regulator spring
column three complete turns (360°) counter-clockwise
(up) from the bottom.
4. Open pilot gas manual shut off valve.
NOTE:
Be sure main gas manual shut off valves are
closed.
5. With pressure taps open, connect a manometer
between
Tap E
and the chamber.
WARNING
M
a
in
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shut-o
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in
T
a
p E
WARNING
M
a
in
ga
s
shut-o
ff
v
a
lve tr
a
in
T
a
p E
Pilot
ga
s
shut-o
ff
v
a
lve tr
a
in
