18
Eclipse RatioMatic Burners, RM Series, V5, Installation Guide 110, 12/3/2014
5. If burner goes out due to main gas flame failure, turn
bias adjusting screw
a half turn clockwise to
increase gas flow. Repeat ignition sequence until
burner lights.
6. Flame signal strength: adjust gas flow with bias
adjusting screw
for lowest gas flow that maintains
a stable flame signal:
• clockwise, for more fuel
• counterclockwise, for less fuel
7. Verify low fire flame:
a. Drive control motor from low fire and back. Verify
low fire and stable flame signal are repeated.
b. Turn the burner off and repeat the ignition
sequence. Verify low flow and stable flame signal
are repeated.
Bypass Start Gas with High Turndown Option
Figure 4.16. Ratio Regulator with
Internal Bypass Adjusting Screw
1. Verify bias adjusting screw
on ratio regulator spring
column in six full clockwise turns (360° x 6) down from
the top (initial setting).
2. Open all manual shut off valves.
3. Close internal bypass adjusting screw
by turning it
clockwise to closed position.
4. Set system control to stay at low fire during and after
ignition sequence.
5. Ignite the burner.
6. If burner goes out due to main gas flame failure, turn
bias adjusting screw
a half turn clockwise to
increase gas flow. Repeat ignition sequence until
burner lights.
7. Slowly decrease gas flow with bias adjusting screw
.
Decrease gas flow until the flame signal becomes
erratic. (Refer to flame monitoring relay literature for a
description of an erratic flame signal.)
8. If burner has gone out, repeat ignition sequence. Turn
internal bypass adjusting screw
a half turn
counterclockwise to increase gas flow at each attempt
until burner lights.
9. Flame signal strength, adjust gas flow with internal
bypass adjusting screw
for lowest gas flow that
maintains a stable flame signal:
• counterclockwise, for more fuel
• clockwise, for less fuel
10. Verify low fire flame:
a. Drive the control motor from low fire and back.
Verify low fire and stable flame signal are
repeated.
b. Turn the burner off and repeat the ignition
sequence. Verify low fire and stable flame signal
are repeated.
Step 5: Verify Air Settings (RM0050-RM0700
only)
NOTE:
There are no high fire gas adjustments or air
adjustments when firing into a neutral chamber. However,
air and gas pressures can be used to verify the burner
system is properly adjusted.
Figure 4.17. Setting Verification
1. With burner lit, drive control motor to high fire.
2. Wait for the chamber to reach normal operating
conditions (e.g. chamber temperature, process flows,
etc.).
3. Measure high fire fuel differential pressure between
tap “B” and tap “D”. this to the “Fuel Orifice
P vs.
Input” graph on the datasheet.
4. Measure high fire air differential pressure between tap
“C” and the chamber. Compare this pressure to the
“Air
P vs. Air Flow” graph on the datasheet.
5. Drive the control motor to low fire and verify low fire
flame signal and flame appearance (if viewing).
1
2
CW for
more gas
Bias
adjusting
screw
CCW for
more gas
Internal bypass
adjusting screw
Tap D
Tap B
Chamber
Tap C
