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All manuals and user guides at all-guides.com Installation, use and maintenance instructions Gas Burners RS 28/M - 38/M - 50/M Low-High-Low or Modulating Operation C6505055 - 2915760 (0)
• MAXIMUM OUTPUT , selected within area A, • MINIMUM OUTPUT , which must not be lower than the minimum limit in the diagram. RS 28/M = 198 MBtu/hr 58 kW RS 38/M = 266 MBtu/hr 78 kW RS 50/M = 321 MBtu/hr 94 kW...
Calculate the approximate maximum output of the burner as follows: - subtract the combustion chamber pressure from the RS 38/M gas pressure measured at test point 1)(B). ∆p (“ WC) - Find the nearest pressure value to your result in col- umn 1A or B of the table for the burner in question.
9 / 32 “ 13 / 16 “ 3 / 8 The position of the threaded holes can be marked using RS 38/M 9 / 32 “ 13 / 16 “ 3 / 8 the head gasket supplied with the burner.
2 notches. Continuing with the previous example, page 6 indicates that for burner RS 38/M with output of 1288 MBtu/hr a pressure of approximately 1.81” WC is necessary at test point 6)(A). If this pressure cannot be reached, open the ring 2)(B) to notch 4 or 5.
All manuals and user guides at all-guides.com GAS PIPING • The main gas train must be connected to the gas attachment 1)(A), using flange 2), gasket 3) and screws 4) supplied with the burner. • The main gas train can enter the burner from the right or left side, depending on which is the most conven- ient, see fig.(A).
All manuals and user guides at all-guides.com ADJUSTMENTS BEFORE FIRST FIRING LOW GAS PRESSURE SWITCH AIR PRESSURE SWITCH Adjustment of the combustion head, and air and gas deliveries has been illustrated on page 8. In addition, the following adjustments must also be made: - open manual valves on the gas train.
All manuals and user guides at all-guides.com BURNER CALIBRATION The optimum calibration of the burner requires an analy- sis of the flue gases at the boiler outlet. Adjust successively: 1 - First firing output 2 - Max. burner output 3 - Min. burner output 4 - Intermediate outputs between low and high fire 5 - Air pressure switch D791...
All manuals and user guides at all-guides.com Adjusting air delivery Progressively adjust the end profile of cam 4)(A) by turn- ing the cam adjustment screws as they appear through the access opening 6)(A). - Turn the screws clockwise to increase air delivery. - Turn the screws counter-clockwise to reduce air deliv- ery.
All manuals and user guides at all-guides.com 5 - AIR PRESSURE SWITCH (A) - CO CHECK AIR PRESSURE SWITCH Adjust the air pressure switch after having performed all other burner adjustments with the air pressure switch set to the start of the scale (A). With the burner operating at min.
All manuals and user guides at all-guides.com MAINTENANCE FLAME INSPECTION WINDOW Combustion The optimum calibration of the burner requires an analy- sis of the flue gases. Significant differences with respect to the previous measurements indicate the points where more care should be exercised during maintenance. Gas leaks Make sure that there are no gas leaks on the pipework between the gas meter and the burner.
MAN = manual LAYOUT (B) AUT = automatic Burners RS 38/M - RS 50/M (three-phase) • Models RS 38/M and RS 50/M leave the factory preset for 208- - Button for: 230 V power supply. - = power reduction • If 460 V power supply is used, change the motor connection from + = power increase delta to star and change the setting of the thermal cut-out as well.
All manuals and user guides at all-guides.com APPENDIX - Burner firing rates according to air density CORRECTION FACTOR average barom. above sea level Air temperature pressure °F (°C) “ W.C. mbar 0 (0°C) 41 (5°C) 50 (10°C) 59 (15°C) 68 (20°C) 77 (25°C) 86 (30°C) 104 (40°F)
All manuals and user guides at all-guides.com BURNER OPERATION Full Modulation BURNER STARTING • Operating closes. Fan motor starts. • Servomotor starts: 90° rotation to right, until contact is made on red cam. The air damper is positioned to MAX. output. •...
All manuals and user guides at all-guides.com BURNER FAULTS Control program under fault In case of any disturbance, the sequence mechanism stops and with it the lock-out indicator. The symbol above the reading mark of the indicator gives the type of disturbance: conditions and lock-out indication No start, e.g.
All manuals and user guides at all-guides.com BURNER START UP REPORT Model number: Serial number: Project name: Start-up date: Installing contractor: Phone number: GAS OPERATION Gas Supply Pressure: : Low Fire High Fire Main Power Supply: : Low Fire High Fire Control Power Supply: CO: Low Fire High Fire...
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