Installation guide

Eclipse RatioMatic v3.10 - Installation Guide No. 110, 7/1/03

Bypass start gas with fuel orifice meter:

Main gas

shut-off

valve train

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

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

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.

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.

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.

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)