Related Manuals for Riello RS 28/1
Summary of Contents for Riello RS 28/1
- Page 1 Installation, use and maintenance instructions Gas Burners RS 28/1 - 38/1 On - Off Operation C6505054 - 2915763 (3)
-
Page 2: Table Of Contents
CONTENTS WARNING If you smell gas: TECHNICAL DATA .......page 3 Burner models . -
Page 3: Technical Data
L1 = Length obtainable with the kit COD. 3010262 L = 8 1 / 2 ” L1 = 13 13 / 16 “ • RS 28/1 COD. 3010263 L = 8 1 / 2 ” L1 = 13 ” • RS 38/1 13 / 16 Gas train according to ul standards: see page 9. -
Page 4: Burner Description
• The burner are shipped in cardboard boxes with the maximum dimensions shown in Table (B). inch • The weight of the burner complete with packaging is indicated in Table (B). RS 28/1 31 / 32 “ 24 13 / 16 “ 19 11 / 16 “... -
Page 5: Firing Rates
FIRING RATES (A) The burner delivery must be selected within the area of the adjacent diagram. Important: the FIRING RATE value range has been obtained con- sidering an ambient temperature of 68 °F (20 °C), and an atmospheric pressure of 394” WC and with the com- bustion head adjusted as shown on page 8. -
Page 6: Gas Pressure
• Pressure in combustion chamber = 0.79” WC 2.36 - 0.79 = 1.57” WC An output of 795 MBtu/hr shown in Table RS 28/1 corre- 1.02 sponds to 1.57” WC pressure, column 1. 1.22 This value serves as a rough guide, the exact flow rate 1099 1.46... -
Page 7: Installation
D455 boiler, and it must be greater than the thickness of the boiler door complete with its insulation. The range of lengths available, L (inch), is as follows: Blast tube 7): RS 28/1 RS 38/1 • short ” ” 1 / 2 1 / 2 •... -
Page 8: Combustion Head Adjustment
COMBUSTION HEAD ADJUSTMENT (For PROPANE operation see page 14). Installation operations are now at the stage where the blast tube and sleeve are secured to the boiler as shown in fig.(A). It is now a very simple matter to set up the combustion head, as this depends solely on the out- put developed by the burner. -
Page 9: Gas Piping
GAS PIPING TYPICAL UL SCHEMATIC GAS PIPING KEY (A) 1 - Gas input pipe 2 - Manual valve 3 - Pressure regulator 4 - Low gas pressure switch 5 - 1st gas safety shut off valve 6 - 2nd safety shut off valve 7 - Standard issue burner gasket with flange 8 - Burner Note... -
Page 10: Adjustments Before Firing
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. - Adjust the low gas pressure switch to the start of the scale (A). -
Page 11: Burner Calibration
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 - Maximum output of the burner 3 - Air pressure switch 4 - Low gas pressure switch 1 - FIRING OUTPUT Pilot adjustment has been illustrated on page 7. -
Page 12: Air Pressure Switch
3 - AIR PRESSURE SWITCH (A) 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, increase adjustment pressure by slowly turning the relative dial clockwise until the burner locks out. -
Page 13: Maintenance
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. -
Page 14: Propane Operation
PROPANE OPERATION The RS 28/1 and 38/1 Models burners can be operated on both natural gas and propane. FIRING RATE It is the same as the one calculated for natural gas, see page 5. SETTING THE COMBUSTION HEAD Adjusting air delivery Adjust the screw 1)(A) as was done for natural gas, according to the burner output, see page 8. -
Page 15: Appendix
Field Wiring Connections • The RS 28/1 - 38/1 burners have been type- approved for intermittent operation. This means they should compulsorily be stopped at least once every 24 hours to enable the flame safeguard to check its own efficiency at start-up. Burner halts are normally provided for auto- matically by the boiler load control system. -
Page 18: Appendix - Burner Firing Rates According To Air Density
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°C) 1013 1,087 1,068... - Page 19 BURNER OPERATION BURNER STARTING Control device closes. Fan motor starts. The air damper is set on maximum adjustment output. The pre-purge stage follows. Ignition electrode strikes a spark. Pilot valve opens. The pilot flame is ignited. After about 12s the main flame ignites and starting cycle ends.
- Page 20 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 tPhe reading mark of the indicator gives the type of disturbance: conditions and lock-out indication No start, e.g. because one contact is not closed. Lock-out during or after control program sequence due to extraneous light (e.g.
- Page 21 Key to Layouts + BB - Components on board burners + BQ - Components on board main panel + BC - Components on board boller DISC1 - Disconnect switch motor DISC2 - Disconnect switch auxiliary - Motor fuse - Auxiliary fuse - High limit control - Control box - Remote lock-out signal...
-
Page 22: Start Up Report
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 Burner Firing Rate: : Low Fire... - Page 24 RIELLO S.p.A. I - 37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.rielloburners.com RIELLO BURNERS NORTH AMERICA 1-800-4-RIELLO 35 Pond Park Road 2165 Meadowpine Blvd. Hingham, Massachusetts, 1-800-474-3556 Mississauga, Ontario, U.S.A. 02043 Canada L5N 6H6 http://www.riello-burners.com Subject to modifications...