Riello Two stage operation forced draught natural gas/propane burner Service Manual

Installation, use and maintenance instructionsInstrucciones de Instalación, Funcionamiento y MantenimientoInstruções de Instalação, Funcionamento e M

9ELECTRICAL SYSTEMELECTRICAL SYSTEM as set up by the manu-facturerLAYOUT (A)Burner RS 28 (single-phase)LAYOUT (B)Burner RS 38 (single-phase)LAYOUT (C)

10ELECTRICAL CONNECTIONSUse flexible cables according to EN 60 335-1Regulations:• if in PVC sheath, use at least H05 VV-F• if in rubber sheath, use at

11LAYOUT (A) - The RS 38 - 50 Models electrical connection three-phase power supply with-out leak detection control deviceLAYOUT (B) - The RS 38 - 50

12ADJUSTMENTS BEFORE FIRST FIRINGAdjustment of the combustion head, and air andgas deliveries has been illustrated on page 7.In addition, the followin

13BURNER CALIBRATIONThe optimum calibration of the burner requiresan analysis of the flue gases at the boiler outlet.Adjust successively:1 - First firin

14Adjusting air deliveryProgressively adjust the end profile of cam 4)(A)by turning the cam adjustment screws as theyappear through the access opening

155 - AIR PRESSURE SWITCH (A)Adjust the air pressure switch after having per-formed all other burner adjustments with the airpressure switch set to th

16BURNER OPERATIONBURNER STARTING (A)• : Control device TL closes.Servomotor starts: it rotates duringopening up to the angle set on camSt1.After abou

17FINAL CHECKS (with burner running)• Disconnect one of the wires on the minimumgas pressure switch:• Open remote control device TL:• Open remote cont

18BURNER START-UP CYCLE DIAGNOSTICSDuring start-up, indication is according to the followin table: RESETTING THE CONTROL BOX AND USING DIAGNOSTICSThe

1 CONTENTS TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2 Variants . . . . . . . . . . . . . . . . . . . . .

19SIGNAL FAULT PROBABLE CAUSE SUGGESTED REMEDY2 x blinks After pre-purge and safety time, the burner goes tolock-out and the flame does not appear1 -

20STATUSAccessory available on request. See page 2.ASSEMBLYThe burners are preset to accept the Status. Toassemble, proceed as follows:- Connect Statu

RIELLO S.p.A.Via degli Alpini 1I - 37045 Legnago (VR)Tel.: +39.0442.630111 Fax: +39.0442.630375http:// www.rielloburners.comSubject to modifications -

2 TECHNICAL DATA (1) Reference conditions: Ambient temperature 20°C - Barometric pressure 1000 mbar - Altitude 100 m a.s.l.(2) Pressure at test point

3 BURNER DESCRIPTION (A) 1 Combustion head2 Ignition electrode3 Screw for combustion head adjustment4 Sleeve5 Minimum air pressure switch (differenti

4 FIRING RATES (A) The RS 28-38-50 burners can work in two ways:one-stage and two-stage MAXIMUM OUTPUT must be selected in area A. MINIMUM OUTPUT m

5 GAS PRESSURE The adjacent tables show minimum pressurelosses along the gas supply line depending onthe burner output in 2nd stage operation.Column

6 INSTALLATION BOILER PLATE (A) Drill the combustion chamber locking plate asshown in (A). The position of the threaded holes can bemarked using the

7 SETTING THE COMBUSTION HEAD Installation operations are now at the stagewhere the blast tube and sleeve are secured tothe boiler as shown in fig.(A)

8 GAS LINE • The gas train must be connected to the gasattachment 1)(A), using flange 2), gasket 3)and screws 4) supplied with the burner.• The gas tr