Step 4: Set Low Fire Gas (Rm1000-Rm3000 Only); Step 5: Verify Settings (Rm1000-Rm3000 Only) - Eclipse RatioMatic RM Series Installation Manual

NOTE: Gas pressure at low fire will be too low to measure
and verify the fuel settings.
6. Cycle burner from high to low several times to check
repeatability of settings.
7. Readjust burner if the settings do not repeat as
expected. If necessary
Maintenance & Troubleshooting.
8. Record all setup data as an aid for future
troubleshooting and setup operations.
9. Stop the burner.
NOTE: Steps 3-5 RM1000-RM3000 Only (see page 15 for
RM0050-RM0700)
Step 3: Adjust Pilot (RM1000-RM3000 only)
1. Drive the control motor to low fire and set the system
to operate on pilot only
2. Turn the handle of the pilot adjusting cock open to
light the pilot.
3. Turn the internal
counterclockwise to increase flow, clockwise to
decrease flow, until the pilot gives reliable ignition and
a steady flame signal with minimum pilot gas flow.
Step 4: Set High Fire Gas (RM1000-RM3000
only)
1. With the pilot lit and the control motor in the low fire
position, open the main gas shut-off valve. The main
flame should light.
2. Drive the control motor to its high fire position.
3. Measure the gas differential pressure as shown in
Figure 4.19.
4. If necessary, adjust the gas flow with the butterfly
valve. The flame should be clear blue. If the flame is
yellow, see Troubleshooting, page 22.
Step 5: Adjust Low Fire Flame (RM1000-
RM3000 only)
1. Return the control motor to the low fire position.
2. Check the combustion air differential pressure as
discussed in Step 2.
3. Gas pressure drop across the burner will be too low to
read reliably, but the flame should be clear blue,
entirely within the firing tube, and tight on the burner
head.
4. If necessary, adjust the ratio regulator bias screw as
shown in Figure 4.20 to obtain the proper low fire
flame. If the flame cannot be viewed, adjust the bias
screw to produce the minimum gas flow that will
generate a steady flame detector signal of sufficient
strength.
5. After adjusting the low fire flame, return to high fire
and check gas differential pressure as described in
Step 4.
Eclipse RatioMatic Burners, RM Series, V5, Installation Guide 110, 12/3/2014
refer to Chapter
screw (Figure 4.18)
■ Do not turn the blower off until the chamber
temperature is below 250°F (121°C). This will
prevent hot gases from flowing back through the
5,
burner and blower and damaging them.
Figure 4.18. Pilot Valve Adjustment
t
Measure differential
pressure between here
and tap in chamber wall
Figure 4.19. High Fire Differential
Figure 4.20. Ratio Regulator
CAUTION
Pilot
Valve
Gas Pressure
19