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Contents
WARNING
Important Notices About Safe Burner Operation
For Ratiomatic Serial Numbers 95-5500 and Above
Version 1.01
3.0 Installation ............................................................. page 6
4.0 Start-Up and Adjustment ...................................... page 8
5.0 Trouble-Shooting .................................................. page 13
6.0 Maintenance .......................................................... page 14
7.0 Servicing ................................................................ page 15
The burners covered in this Guide are designed to mix fuel with air and
burn the resulting mixture. All fuel burning devices are capable of pro-
ducing explosions and fires when improperly applied, installed, adjusted,
controlled, or maintained. This Guide will provide information for using
these burners for their limited design purpose. Do not deviate from any
instructions or application limits in this Guide without written advice from
the Eclipse Combustion, Inc. Read this entire Guide before attempting to
light burners. If you do not understand any part of the information in this
Guide, contact your local Eclipse representative or Eclipse Combustion,
Inc., before proceeding further.
Store the burner inside. Exposure to the elements can damage the burner.
Adjustment, maintenance, and troubleshooting of the mechanical parts of this
unit should be done by people with good mechanical aptitude and experience
with combustion equipment.
Order replacement parts from Eclipse Combustion, Inc., only. Any customer-
supplied valves or switches should carry UL, FM , CSA, and/or CGA approval where
applicable.
The best safety precaution is an alert and competent operator. Thoroughly in-
struct new operators so they demonstrate an adequate understanding of the
equipment and its operation. Regular retraining must be scheduled to maintain a
high degree of proficiency. The operator must have easy access to this Informa-
tion Guide at all times.
7/97
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Summary of Contents for Eclipse RatioMatic 50
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Page 1: Table Of Contents
Do not deviate from any instructions or application limits in this Guide without written advice from the Eclipse Combustion, Inc. Read this entire Guide before attempting to light burners. If you do not understand any part of the information in this Guide, contact your local Eclipse representative or Eclipse Combustion, Inc., before proceeding further. -
Page 2: Operating Parameters & Requirements
Cast Head & Alloy Firing Tube: 1500° F. maximum. (816° C) Alloy Head & Refractory Block: 1800° F. maximum. (982° C) Temperatures shown are for average installations. Depending on conditions, higher operating temperatures can be obtained. Contact Eclipse for specific in- formation for your application. Capacities & Pressures See Figure 1. - Page 3 At the inlet to the pilot cock. High fire flame length measured from the end of the firing tube, firing parallel to air flow with neutral chamber pressure. When firing perpendicular to air flow, flame length will be shorter. Contact your local Eclipse representative for details.
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Page 4: Burner Operation & Controls
Control Motor Requirements Stroke: 90°. For applications with unusually high backpressures or drafts, motor travel may need to be restricted to less than 90°. Eclipse recommends adjustable stroke motors or motors with travel-limiting auxiliary switches for these jobs. Timing: 15 seconds minimum. - Page 5 Figure 2–Ratiomatic Operation Air Valve Control Motor Rotates air valve: Open for more heat Closed for less heat Low Fire Gas Adjustment Factory set for most applications; can be field adjusted if necessary. Pilot Adjusting Valve Main Gas Proportionator Adjusting Changes gas flow Valve in proportion to...
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Page 6: Installation
Shipped loose for remote mounting. Connect with tubing to Tap “D,” Figure 4. Main Gas Valve Trains Valve trains ordered from Eclipse are shipped loose for installation at the job site. They must be mounted with horizontal flow and the actuators of the automatic fuel shut-off valves pointing up. - Page 7 Figure 3–Burner Mounting for Ratiomatics with Alloy Firing Tube For installation of Ratiomatics with blocks and holders, refer to Eclipse Installation 295. Mounting Studs 3/8" Dia. x 1-3/4" lg. Same Grade (10 mm x 44 mm) Sheet Metal As Inner Oven Wall 45 Deg.
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Page 8: Start-Up And Adjustment
See the literature included with the flame monitoring relay and/ or control panel for information on operation with pilot only. Eclipse flame moni- toring relays have a front panel pilot test button that will hold the start-up sequence on pilot during pilot adjustment. - Page 9 4.0 Start-Up And Adjustment (continued) Step 2: Adjust Low Fire Air Setting Measure differential air pressure as shown below. Low Fire Air Differential Pressure Must be a minimum of 0.2" w.c. (0.5 mbar), which is obtained with the air butterfly valve in the fully closed position under neutral conditions.
- Page 10 4.0 Start-Up And Adjustment (continued) Step 3: Adjust Pilot Drive the control motor to low fire and set the system to operate on pilot only. Turn the handle of the pilot adjusting cock open to light the pilot. Turn the internal screw shown below counterclockwise to increase flow, clockwise to decrease flow, until the pilot gives reliable ignition and a steady flame signal with minimum pilot gas flow.
- Page 11 4.0 Start-Up And Adjustment (continued) Step 4: Set High Fire Gas 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. Drive the control motor to its high fire position. Measure the gas differential pressure as shown below.
- Page 12 4.0 Start-Up And Adjustment (continued) Step 5: Adjust Low Fire Flame Return the control motor to the low fire position. Check the combustion air differential pressure as discussed in Step 2. Gas pressure drop across the burner Remove Cover & Turn Screw will be too low to read reliably, but the Clockwise for more low fire gas, Counterclockwise for less low fire gas.
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Page 13: Trouble-Shooting
1. Burner internals loose, dirty or burned out. If any of these problems exist, con- Burner behaves erratically, does tact your Eclipse representative or the Eclipse factory for service. not respond to adjustment. 1. Gas flow is too high. Gas butterfly valve is open too far, or main gas regu- Main flame too long &... -
Page 14: Maintenance
6.0 Maintenance Maintenance Program A sound preventative maintenance program, carried out by qualified individuals, will greatly increase equipment reliability and productivity. Frequency of mainte- nance checks should reflect the duty cycle of the heating equipment and condi- tions such as dirt and temperature. Any maintenance program should include at least the following steps: Check Pressure Settings Check burner high and low fire air and gas settings. -
Page 15: Servicing
For Ratiomatic burners, the part number used as the ignition plug is the same as that used for the flame rod. Eclipse recommends that the user keep at least one of these in stock at all times to prevent nuisance shutdowns. See Figure 7 for plug and rod replacement.