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3

Burner Size

50

100

150

200

300

400

500

600

750

1000

1250

1500

2000

2500

-12.5

205

410

616

850

1076

1369

1612

2052

2726

3664

4279

5188

6800

8090

-7.5

191

366

557

733

1002

1345

1612

1934

2521

3400

4045

4895

6448

7800

-2.5

161

322

484

645

924

1231

1521

1817

2315

3107

3781

4572

6067

7474

0.0

147

293

440

586

879

1172

1466

1759

2198

2931

3664

4397

5862

7328

+2.5

132

264

396

528

835

1112

1407

1685

2081

2755

3517

4221

5657

7152

+5.0

117

234

352

469

786

1049

1348

1612

1964

2579

3371

4015

5452

6990

11.7

7.3

8.8

8.8

19.1

16.1

19.1

19.1

22.0

29.3

36.6

44.0

58.6

73.3

Turndown

12:1

40:1

50:1

67:1

46:1

73:1

77:1

92:1

100:1

100:1

100:1

100:1

100:1

100:1

-12.5

11.2

13.7

12.2

15.2

18.2

18.7

11.2

18.4

20.2

24.4

29.9

22.7

21.7

30.6

-7.5

9.7

11.0

10.0

11.2

15.9

17.9

11.2

16.2

17.4

21.2

26.7

20.2

19.7

28.4

-2.5

7.0

8.5

7.5

8.7

13.5

15.2

10.0

14.4

14.7

17.2

23.4

17.4

17.4

26.2

0.0

5.7

7.0

6.2

7.2

12.2

13.7

9.2

13.5

13.2

15.7

21.9

16.2

16.2

25.2

+2.5

4.7

5.7

5.0

5.7

11.0

12.5

8.5

12.5

11.7

14.0

20.2

14.9

15.2

23.9

+5.0

3.7

4.5

4.0

4.7

9.7

11.0

7.7

11.2

10.5

12.2

18.4

13.5

14.0

22.9

Minimum mbar

17

20

27

40

30

42

35

50

30

35

50

55

75

95

  Maximum mbar

4

69

69

69

69

138

138

138

138

138

138

138

138

138

138

15

15

15

15

15

15

15

15

15

15

15

15

15

15

0.61

0.76

0.81

0.91

1.37

1.37

1.52

1.68

2.44

3.15

3.66

3.66

3.81

4.32

1/3

1/2

3/4

3/4

1-1/2

2

3

5

5

7-1/2

10

15

20

30

English Units

1

With neutral chamber.  Will be slightly higher with negative chamber pressure.

2

Measured between tap“B” and the combustion chamber as shown on page 11.

3

At the inlet to the proportionator.

4

Under certain conditions, up to 5 psig (345 mbars) is allowable on RM 300 and larger burners; contact the factory for details.

5

At the inlet to the pilot cock.

6

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.

Burner Size

50

100

150

200

300

400

500

600

750

1000

1250

1500

2000

2500

-5.0

0.70

1.40

2.10

2.90

3.67

4.67

5.50

7.00

9.30

12.50

14.60

17.70

23.20

27.60

-3.0

0.65

1.25

1.90

2.50

3.42

4.59

5.50

6.60

8.60

11.60

13.80

16.70

22.00

26.60

-1.0

0.55

1.10

1.65

2.20

3.15

4.20

5.19

6.20

7.90

10.50

12.90

15.60

20.70

25.50

0.0

0.50

1.00

1.5

2.00

3.00

4.00

5.00

6.00

7.50

10.00

12.50

15.00

20.00

25.00

+1.0

0.45

0.90

1.35

1.80

2.85

3.80

4.80

5.75

7.10

9.40

12.00

14.40

19.30

24.40

+2.0

0.40

0.80

1.20

1.60

2.68

3.58

4.60

5.50

6.70

8.80

11.50

13.70

18.60

23.85

40

25

30

30

65

65

65

65

75

100

125

150

200

250

Turndown

12:1

40:1

50:1

67:1

46:1

73:1

77:1

92:1

100:1

100:1

100:1

100:1

100:1

100:1

-5.0

4.5

5.5

4.9

6.1

7.3

7.5

4.5

7.4

8.1

9.8

12.0

9.1

8.7

12.3

-3.0

3.9

4.4

4.0

4.5

6.4

7.2

4.5

6.5

7.0

8.5

10.7

8.1

7.9

11.4

-1.0

2.8

3.4

3.0

3.5

5.4

6.1

4.0

5.8

5.9

6.9

9.4

7.0

7.0

10.5

0.0

2.3

2.8

2.5

2.9

4.9

5.5

3.7

5.4

5.3

6.3

8.8

6.5

6.5

10.1

+1.0

1.9

2.3

2.0

2.3

4.4

5.0

3.4

5.0

4.7

5.6

8.1

6.0

6.1

9.6

+2.0

1.5

1.8

1.6

1.9

3.9

4.4

3.1

4.5

4.2

4.9

7.4

5.4

5.6

9.2

Minimum " w.c.

7

8

11

16

12

17

14

20

12

14

20

22

30

38

Maximum psig

4

1

1

1

1

2

2

2

2

2

2

2

2

2

2

6

6

6

6

6

6

6

6

6

6

6

6

6

6

24

30

32

36

54

54

60

66

96

124

144

144

150

170

1/3

1/2

3/4

3/4

1-1/2

2

3

5

5

7-1/2

10

15

20

30

Chamber

Pressure

Inches w.c.

Chamber

Pressure

Inches w.c.

Maximum

Input,

Btu/hr.

In Millions

Gas Inlet

Press.

3

Chamber

Pressure

mbar

Gas Inlet

Press.

3

Minimum Input, Btu/hr. In 1000’s

1

High Fire
Gas 

P,

2

"w.c.

Blower Motor HP

High Fire Flame Length, Inches

6

Min. Pilot Gas Press., " w.c.

5

Metric Units

High Fire
Gas 

P,

2

mbar

Chamber

Pressure

mbar

Minimum Input, kW

1

Maximum

Input,

kW

High Fire Flame Length, m

6

Blower Motor HP

Min. Pilot Gas Press., mbar

5

Figure 1– Operating Parameters, Ratiomatics with Standard Blower & Motor

For natural gas, .65 s.g.  Contact your Eclipse representative for propane data.

Capacities may be increased by 20% if sufficient secondary air is available to complete combustion.

14

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.

Check Filters

Examine and, if necessary, clean or replace air and gas filter elements.

Check Pipes for Leaks

Check all piping connections for leaks.

Check Flame Supervision Equipment

Check the ability of the flame supervision system to function properly by simulat-
ing system failures:
Simulate burner flame-out by manually shutting off the gas.

Trip out pressure switches and other limit interlocks.

Try to light the burner before the purge and other timers have finished their cycles.

If simulated limit or flame failures do not shut down the fuel system within an ac-
ceptably short period of time, immediately take the equipment out of service and
correct the problem.

Leak test automatic and manual reset fuel valves per insurance company procedures.

Check Bolts & Screws

Check all bolts and screws for tightness.

Check for Overheating

Check the area around the burner mounting flange for signs of overheating.
Gasket or insulation replacement may be necessary.

Figure 6–Filter Element Replacement

Blower

Housing

Gasket

Blower

Housing

#10-24 x 3/8" Long Screws

& Lockwashers (6)

Hold-Down Screws (4)

1/4 Turn to Release Ring

Filter Element

Retaining

Ring

Summary of Contents for RatioMatic 50

Page 1: ...e 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 Important...

Page 2: ...t See Figure 6 for filter element replacement Spark Plug Flame Rod Replacement Ignition plugs and flame rods wear out over long periods of normal burner opera tion For Ratiomatic burners the part numb...

Page 3: ...4 9 6 1 7 3 7 5 4 5 7 4 8 1 9 8 12 0 9 1 8 7 12 3 3 0 3 9 4 4 4 0 4 5 6 4 7 2 4 5 6 5 7 0 8 5 10 7 8 1 7 9 11 4 1 0 2 8 3 4 3 0 3 5 5 4 6 1 4 0 5 8 5 9 6 9 9 4 7 0 7 0 10 5 0 0 2 3 2 8 2 5 2 9 4 9 5 5...

Page 4: ...portionator damage Limit Controls Limit controls and safety equipment should comply with current NFPA Standard 86 and all applicable local codes and or standards NFPA Standards are available from Nati...

Page 5: ...lame 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 will be too low to read reliably but th...

Page 6: ...e Trains The pilot gas valve train should be connected as close as possible to the pilot adjusting cock Flame Rod and U V Scanner See Figure 4 When mounting a UV scanner use short pipe nipples to insu...

Page 7: ...t 1 2 N P T Air Valve Shaft Tap D Air Switch Connection 1 8 N P T Blower Ignition Plug 750 1250 150000 5 1500 2000 150000 12 DETAIL Peepsight 1 2 N P T Spark Plug 1 2 N P T Flame Rod or UV Scanner 1 2...

Page 8: ...matic gas valves including the main gas butterfly and the pilot gas cock Combustion Air Blower Start the blower and check the impeller for correct rotation If it s running back wards have a qualified...

Page 9: ...matic gas valves including the main gas butterfly and the pilot gas cock Combustion Air Blower Start the blower and check the impeller for correct rotation If it s running back wards have a qualified...

Page 10: ...t 1 2 N P T Air Valve Shaft Tap D Air Switch Connection 1 8 N P T Blower Ignition Plug 750 1250 150000 5 1500 2000 150000 12 DETAIL Peepsight 1 2 N P T Spark Plug 1 2 N P T Flame Rod or UV Scanner 1 2...

Page 11: ...e Trains The pilot gas valve train should be connected as close as possible to the pilot adjusting cock Flame Rod and U V Scanner See Figure 4 When mounting a UV scanner use short pipe nipples to insu...

Page 12: ...lame 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 will be too low to read reliably but th...

Page 13: ...portionator damage Limit Controls Limit controls and safety equipment should comply with current NFPA Standard 86 and all applicable local codes and or standards NFPA Standards are available from Nati...

Page 14: ...4 9 6 1 7 3 7 5 4 5 7 4 8 1 9 8 12 0 9 1 8 7 12 3 3 0 3 9 4 4 4 0 4 5 6 4 7 2 4 5 6 5 7 0 8 5 10 7 8 1 7 9 11 4 1 0 2 8 3 4 3 0 3 5 5 4 6 1 4 0 5 8 5 9 6 9 9 4 7 0 7 0 10 5 0 0 2 3 2 8 2 5 2 9 4 9 5 5...

Page 15: ...t See Figure 6 for filter element replacement Spark Plug Flame Rod Replacement Ignition plugs and flame rods wear out over long periods of normal burner opera tion For Ratiomatic burners the part numb...

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