INVERTER, or in applications where the length of the thermostat connections exceeds 20 metres, a protection kit is available as an interface between the control box and the burner. BURNER RS 25/M BLU - RS 35/M BLU Code 3010386 • LONG HEAD KIT...
- power reduction 19 Motor contact maker and thermal cut-out with reset button (RS 35/M BLU three-phase) 20 Motor capacitor (RS 25/M BLU single-phase) 21 Control box with lockout pilot light and lock- out reset button 22 Sockets for electrical connection...
• a MAXIMUM OUTPUT, selected within area A, • and a MINIMUM OUTPUT, which must not be lower than the minimum limit in the diagram. RS 25/M BLU = 45 kW RS 35/M BLU = 72 kW Important The FIRING RATE values have been obtained considering an ambient temperature of 20°C, an...
GAS PRESSURE RS 25/M BLU RS 35/M BLU The adjacent tables show minimum pressure 1 p 2 p 1 p 2 p losses along the gas supply line depending on (mbar) (mbar) (mbar) (mbar) the maximum burner output operation. Column 1 Pressure loss at combustion head.
15. Any other position could compromise the correct working of the appliance. Installation 5 is forbidden, for safety reasons. RS 25/M BLU RS 35/M BLU BOILER PLATE (B) Pierce the closing plate of the combustion D455 chamber, as in (B).
COMBUSTION HEAD SETTING 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 therefore par- ticularly easy to adjust the combustion head. Air adjustment (A - B) Rotate the screw 1)(A) until the notch on the lamina 2)(A) corresponds with the surface of the plate 3)(A).
GAS FEEDING LINE The fuel supply line must be installed by qualified personnel, in com- pliance with current standards and WARNING laws. Explosion danger due to fuel leaks in the presence of a flammable source. Precautions: avoid knocking, attri- tion, sparks and heat. Make sure that the fuel interception tap is closed before performing any operation on the burner.
ADJUSTMENTS PRIOR TO IGNITION MIN GAS PRESSURE SWITCH AIR PRESSURE SWITCH ATTENTION THE FIRST IGNITION MUST BE CARRIED OUT BY QUALIFIED PERSONNEL WITH THE RIGHT INSTRUMENTS. The adjustment of the combustion head, air, was described on page 8. In addition, the following adjustments must also be made: - open manual valves up-line from the gas train.
BURNER CALIBRATION The optimum calibration of the burner requires an analysis of the flue gases at the boiler outlet. Adjust successively: 1 - Output upon ignition (minimum) 2 - Max. burner output 3 - Intermediate outputs between Min. and Max. 4 - Air pressure switch 5 - Minimum gas pressure switch DETERMINATION OF OUTPUT UPON IGNI-...
NOTE The servomotor follows the adjustment of cam III only when the angle of the cam is reduced. If it is necessary to increase the angle of the cam, you must first increase the angle of the servo- motor by means of the “output increase” key, then increase the angle of cam III, and finally bring the servomotor to the position of MIN out- put, with the “output reduction”...
4 - AIR PRESSURE SWITCH (A) AIR PRESSURE SWITCH 4)(A)p. 4 Adjust the air pressure switch after having per- formed all other burner adjustments with the air pressure switch set to the start of the scale (A). With the burner working at MIN output, insert a combustion analyser in the stack, slowly close the suction inlet of the fan (for example, with cardboard) until the CO value does not exceed...
BURNER OPERATION STANDARD IGNITION (n° = seconds from the moment 0) BURNER START-UP (A) • 0s: Closure thermostat/pressure switch TL. • 2s: Start of electrical control box pro- gramme. Servomotor starts: rotate to the left by 90°, i.e. until the contact intervenes with cam I (D)p.
FINAL CHECKS (with the burner working): • disconnect a wire of the minimum gas pres- sure switch; • switch on the thermostat/pressure switch TL; • switch on the thermostat/pressure switch TS; the burner must stop. • disconnect the air adduction tube of the pres- sure switch;...
TO OPEN THE BURNER (A): OPENING THE BURNER - Switch off the electrical power. - Remove the screw 1) and pull out the hood - Disengage the articulated coupling 3) from the graduated sector 4). - Remove the screw 5) only with the long head models;...
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BURNER START-UP CYCLE DIAGNOSTICS During start-up, the indications are explained in the following table: COLOUR CODE TABLE Sequences Colour code Pre-purging Ignition phase Operation, flame OK Operation with weak flame signal Electrical supply lower than ~ 170V Lockout Extraneous light Key to layout: Yellow Green...
Signal Problem Possible cause Recommended remedy Once the pre-purging phase - The operation solenoid lets little gas through ..Increase 2 blinks and safety time have passed, - One of the two solenoid valves does not open..Replace the burner goes into lockout without the appearance of the...
NORMAL OPERATION / FLAME DETECTION TIME The control box has a further function to guarantee the correct burner operation (signal: GREEN LED permanently on). To use this function, wait at least ten seconds from the burner ignition and then press the control box button for a minimum of 3 seconds. After releasing the button, the GREEN LED starts flashing as shown in the figure below.
The electrical wirings must be carried out in conform- ity with the regulations in force in the countries of destination, and by qualified personnel. Riello S.p.A. cannot accept any responsibility for modifications or connections other than those shown in these diagrams.
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NOTES • The model RS 35/M BLU three phase leaves the factory with an electrical supply setting of 400V. If 230V power supply is used, change the motor connection from star to delta and change the setting of the thermal relay as well. •...
Electrical panel layout INDEX Indication of references RMG/M operational layout Operational layout Electrical connections set by installer Electrical connections set by installer RWF50 operational layout Indication of references /1 .A 1 Sheet no. Co-ordinates...
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KEY TO ELECTRICAL LAYOUT 电气接线图图例 – Electrical control box - 电气控制盒 – Radio noise filter - 电磁噪音过滤器 – Output power regulator RWF - 出力比调仪 RWF – Input under current 4...20 mA DC - 输入,电流低于 4...20 mA DC – Input under current 4...20 mA DC to modify the - 输入,电流低于...
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