Information and general instructions Information and general instructions Information about the instruction manual 1.1.1 Introduction 1.1.4 Danger: live components The instruction manual supplied with the burner: This symbol indicates operations which, if not car- is an integral and essential part of the product and must not be ried out correctly, lead to electric shocks with lethal separated from it;...
Information and general instructions Guarantee and responsibility The manufacturer guarantees its new products from the installa- 1.2.1 Owner’s responsibility tion date, in accordance with the regulations in force and/or the Please pay attention to the Safety Warnings contained within sales contract. At the moment of the first start-up, check that the this instruction manual.
Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with manufacturer; current regulations and directives, applying the known technical the type and pressure of the fuel, the voltage and frequency of rules of safety and envisaging all the potential danger situations. the electrical power supply, the minimum and maximum deliv- eries for which the burner has been regulated, the pressurisa- It is necessary, however, to bear in mind that the imprudent and...
70-100-130 burners to operate on LPG. L = Standard length L1 = Length obtainable with the kit • Gas train according to UL Standards: see page 17. Code 3010267 • RLS 70 L = 9 L1 = 15 32” 32” Code 3010268 •...
Technical description of the burner Burner description D2299 Fig. 3 Combustion head 19 Air pressure test point Ignition electrodes 20 Servomotor Screw for combustion head adjustment When the burner is not operating the air damper is fully closed Sleeve in order to reduce heat loss. Relay for oil / gas selection 21 Pump motor Fan motor...
Technical description of the burner Firing rates MAXIMUM OUTPUT must be selected in area A. RLS 70 In order to increase to area B (RLS 130) it is necessary to perform the calibration of the combustion head as explained on page 12.
Technical description of the burner Procedure to refer burner operating condition in high altitude plants Find the corrected burner capacity for the plant’s altitude in chart 1 Example and the corrected pressure in chart 2. Rated capacity = 3000 MBtu/hr - Rated air pressure = 1.5”w.c. Check in the firing rate graph of the burner page 9, if the working Real altitude = 5000 ft - Real temperature = 108°F point defined by the values above is within the range limits.
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Technical description of the burner CORRECTED BURNER AIR PRESSURE ACCORDING TO ALTITUDE Altitude m. a.s.l. 1220 1525 1830 2135 2440 Rated Pressure ft a.s.l 1000 2000 3000 4000 5000 6000 7000 8000 0,50 0,49 0,50 0,51 0,53 0,55 0,57 0,59 0,62 0,64 0,67...
Boiler plate Drill the combustion chamber mounting plate as shown in (Fig. 6). D455 The position of the threaded holes can be marked using the gasket supplied with the burner. inch RLS 70 “ “ - 12 “ RLS 100 “...
Installation Nozzle selection Both nozzles must be chosen from among those listed in (Tab. H). Nozzle MBtu/hr The first nozzle determines the delivery of the burner in low fire. size 174 PSI 145 PSI 174 PSI 203 PSI The second nozzle combines together with the 1st nozzle to deter- 5.00 6.15 6.79...
Installation Refit the burner to the slide bars 3) (Fig. 13) at approximately 4” from the sleeve 4) - burner positioned as shown in (Fig. 7, page 12) - insert the ignition electrode cables and then slide the burner up to the sleeve so that it is positioned as shown in (Fig.
It is good practice to ensure that the return and suction lines enter the burner from the same height; in this way it will be more improb- able that the suction line fails to prime or stops priming. L ft RLS 70 - 100 - 130 Ø inch ” ”...
Installation 4.11 Gas line • The main gas train must be connected to the gas attachment D2310 1) (Fig. 22), 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.
Installation 4.13 Gas pressure The adjacent diagrams are used to calculate manifold pressure RLS 70 taking into account combustion chamber pressure. Column 1 Gas manifold pressure measured at test point 1) (Fig. 25), with: • Combustion chamber at 0” WC •...
Installation 4.14 Adjustments before first firing Adjustment of the combustion head has been illustrated on – Adjust the air pressure switch to the zero position of the scale page 14. (Fig. 28). – Purge the air from the gas line. In addition, the following adjustments must also be made: –...
Installation 4.15 Servomotor In the Fig. 32 and Fig. 33 shows how the servomotor is released to manually check there is no binding though its motion. Don’t release the button indicated in this figure: the syncronization of the cams made in factory would be changed.
Installation 4.16 Cams and trim potentiometers functions Trim potentiometer MAX (gas only) Cam 1: 130° (GAS only) Limits maximum modulation. Limits rotation towards maximum for gas. It must be set near the stroke end (cam 1) to exploit as far as pos- Cam 2: 0°...
Installation 4.17.3 Maximum output Turn the burner on with switch C) (Fig. 34) on AUTO and the slide switch on OPE. Using button B) (Fig. 34), "increase output" until it stops, app. 130° After firing, turn the switch 1) (Fig. 35, page 21) to MAN position, (cam 1).
Installation 4.18 Air pressure switch Adjust the air pressure switch after having performed all other burn- The air pressure switch may operate in "differential" operation in er adjustments with the air pressure switch set to the start of the two pipe system. If a negative pressure in the combustion chamber scale (Fig.
Maintenance Maintenance Combustion UV scanner The optimum calibration of the burner requires an analysis of the Clean the glass cover from any dust that may have accumulated. flue gases. Significant differences with respect to the previous The scanner 1) (Fig. 40) is held in position by a pressure fit and can measurements indicate the points where more care should be ex- therefore be removed by pulling it outward forcefully.
Maintenance Opening the burner 5.1.1 To open the burner – Switch off the electrical power – Loosen screws 1) and withdraw the cover 2)(Fig. 41) – Disengage the swivel coupling 7) from the graduated sector. – Disconnect the light-oil pipes. –...
Electrical system Electrical system Electrical wiring Notes on safety for the electrical wiring The electrical wiring must be carried out with the electrical supply disconnected. Electrical wiring must be carried out by qualified personnel and in compliance with the regulations currently in force in the country of destination.
Electrical system Operation layout See (Fig. 43). High - Low Switching times are given in seconds, in the burner startup se- quence. LFL 1.335 Series 01 37.5 optional optional Tab. J Legend for the times t1 Pre-purge time with air damper open t2 Safety time t3 Pre-ignition time, short (ignition transformer on terminal 16) t4 Interval between start of t2 and release of valve at terminal 19...
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Electrical system Factory Wiring Diagram RLS 70 - 100 - 130 Field Wiring Diagram RLS 70 - 100 - 130 With burner mounted Siemens LFL control With burner mounted Siemens LFL control See attached insert for wiring diagram D2316 Fig. 45 Key to layouts (Fig.
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The setting of the thermal overload must be according to the to- tal burner amperage draw. • The RLS 70-100-130 burners leave the factory preset for: – 208-230 V power supply: only in this case, if 460 V power supply is required, change the fan and the pump motor con- nection from delta to star and change the setting of the ther- mal overload as well;...
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Electrical system Key to layouts UV cell Thermal overload (fan motor) Thermal overload (pump motor) K... Relay Fan motor contactor Pump motor contactor Fan motor Pump motor Air pressure switch High gas pressure switch Oil pressure switch Servomotor Ignition transformer (pilot) Ignition transformer (oil) Burner ground Burner terminal strip...
Faults - Possible causes - Solutions Faults - Possible causes - Solutions Find a list of faults, causes and possible solutions for a set of fail- If a burner malfunction is detected, first of all: ures that may occur and result in irregular burner operation or no •...
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Faults - Possible causes - Solutions 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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