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Eclipse RatioAir v1 - Installation Guide No. 115, 4/7/06
1.
Drive control motor to low fire.
2.
Be sure combustion air blower is running.
3.
Be sure main gas manual shut off valves are closed.
4.
Prepare to measure bypass gas flow at the fuel orifice
meter
4
.
5.
Open manual shut off valve
1
in the bypass.
6.
Set the system to operate on bypass gas only.
7.
Attempt to ignite burner by energizing spark and bypass
gas solenoid valves
2
.
8.
If burner does not ignite:
a.
Attempt to ignite burner again to purge air from the
gas piping.
b.
If burner still does not ignite, turn ALO adjusting
screw
3
a half turn counterclockwise to increase gas
flow.
c.
Attempt to ignite burner.
d.
Repeat steps
b
and
c
until burner ignites. If
necessary, refer to Chapter 5 for troubleshooting tips.
9.
Adjust bypass gas flow with ALO adjusting screw
3
to achieve the low fire gas flow indicated on data
sheet. Refer to the fuel orifice meter literature for
instructions on flow measurement.
Note:
When firing into negative or fluctuating chamber
pressures, a higher bypass gas flow may be necessary.
10.
Verify the bypass gas 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.
Verify repeatability of ignition and low fire flame
signal.
Step3:
Ignite the burner
Procedure D:
Bypass start gas
with
fuel orifice
meter
Adjustable Limiting Orifice
(ALO)
Main gas
shut-off
valve train
NC
NC
Bypass start gas with fuel orifice meter:
1
2
3
4