Riello GAS 8 P/M Installation, Use And Maintenance Instructions
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Riello GAS 8 P/M Installation, Use And Maintenance Instructions

Riello GAS 8 P/M Installation, Use And Maintenance Instructions

Forced draught gas burners, progressive two-stage or modulating operation
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Installation, use and maintenance instructions
Forced draught gas burners
GB
Progressive two-stage or modulating operation
CODE
3753883
3753884
3754083
3754084
3754185
3754186
3754187
3754188
MODEL
GAS 8 P/M
GAS 8 P/M
GAS 9 P/M
GAS 9 P/M
GAS 10 P/M
GAS 10 P/M
GAS 10 P/M
GAS 10 P/M
TYPE
538 T80
538 T80
540 T80
540 T80
541 T80
541 T80
541 T80
541 T80
2915247 (9) - 01/2015

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Summary of Contents for Riello GAS 8 P/M

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners Progressive two-stage or modulating operation CODE MODEL TYPE 3753883 GAS 8 P/M 538 T80 3753884 GAS 8 P/M 538 T80 3754083 GAS 9 P/M 540 T80 3754084 GAS 9 P/M 540 T80...
  • Page 2 The quality is guaranteed by a quality and management system certified in accordance with UNI EN ISO 9001. Legnago, 03.09.2014 Executive General Manager Research & Development Director RIELLO S.p.A. - Burner Department RIELLO S.p.A. - Burner Department Mr. U. Ferretti Mr. R. Cattaneo...

  • Page 3: Table Of Contents

    Warning CONTENTS page These instructions are an integral part of the product and should therefore GENERAL ........3 never be detached from the plant.

  • Page 4: General

    1 - GENERAL 1.1 TECHNICAL DATA MODEL GAS 8 P/M GAS 9 P/M GAS 10 P/M Type 538 T80 540 T80 541 T80 1163 - 2326 1744 - 3488 2441 - 5000 stage 2° Mcal/h 1000 - 2000 1500 - 3000...

  • Page 5: Burner Description

    Approximate measurements. · The burner stands on a wooden base which can be lifted by fork-lifts. Outer dimensions of packaging are indicated in (B). GAS 8 P/M 1690 · The weight of the burner with the longest GAS 9 P/M 1870...

  • Page 6: Accessories

    1.7 ACCESSORIES (optional) A1 COD. 3000722 L = 110 L1 = 281 mm • GAS 8 P/M Table 1.2 shows the accessories available for A2 COD. 3000723 L = 130 L1 = 314 mm • GAS 9 P/M each burner A3 COD.

  • Page 7: Firing Rates

    The meeting point between the two lines gives the operating point, which must lie within the FIRING RATE. Example: for GAS 8 P/M the range is defined by: · the 1163 - 2326 kW output axis · the 0 +14 mbar comb. chamber pressure axis ·...

  • Page 8: Installation

    If there is any doubt, inform the distributor. • Collect all packaging elements and store them in a suitable place. GAS 8 P/M GAS 9 P/M 2.1 BOILER PLATE (B) GAS 10 P/M Drill the combustion chamber locking plate as shown in (B).

  • Page 9: Securing The Burner To The Boiler

    2.3 SECURING THE BURNER TO THE BOILER (A) - Detach the combustion head, as follows: - Remove screws 5)(A) from the two slide bars - Detach head drive rod 11) by removing pin - Detach the gas throttle valve control rod 4) by removing screw 3).

  • Page 10: Gas Line

    - 0,81 Mcal/Nm the gas pipework, particularly down-line from filter 5)(A). GAS 8 P/M GAS 9 P/M GAS 10 P/M GAS TRAIN (A) Supplied on request by Riello (part L) To UNI-CIG 8042 standards. 1150 0,59 0,99 1800 1,41 2,37...

  • Page 11: Electrical Equipment, Factory-Set

    2.6 ELECTRICAL EQUIPMENT factory- GAS 8 - 9 P/M DIRECT MOTOR STARTING LAYOUT (A) GAS 8 - 9 P/M Burners with direct motor starting These models leave the factory preset for a 380 V operating voltage. For a 220 V operating voltage, change the motor connection (from star to delta) and the calibration of the thermal relay, see layout (E)p.12.
  • Page 12 1 and 2 TL - Limit load control system:shuts down the Cable section burner when the boiler temperature or GAS 8 P/M GAS 9 P/M pressure exceeds the maximum preset 220 V 380 V 220 V 380 V value.
  • Page 13 LAYOUT (A) GAS 10 P/M - ELECTRICAL CONNECTION OF BURNER BY INSTALLER Electrical connection GAS 10 P/M burn- with star - delta motor starting and VPS gas valve leak detection control · with star-delta motor starting The two fair leads supplied are for starter input- output electrical connections.

  • Page 14: Controls And Calibrations Before Firing

    3 - CONTROLS AND CALIBRA- MIN GAS PRESSURE SWITCH 7)(A) pag. 9 TIONS BEFORE FIRING 3.1 BOILER Make sure that: - water or diathermic oil is available - the water circuit valves are open - the stack is not obstructed and is of dimensions and construction conforming to required stand- ards - the burner is closed and securely fixed to the...

  • Page 15: Combustion Air

    3.3 COMBUSTION AIR AIR PRESSURE SWITCH 7)(A) pag. 4 - The boiler room must be equipped with the pre- scribed ventilation outlets to free air. It is sug- gested that combustion tests be taken at Max. delivery with the room aired only by the outlets which will feed air to the burner and then repeat the measurements with doors and windows open.

  • Page 16: Burner Firing

    (A). For example, with the GAS 8 P/M model, a vari- ation in output between 750 MIN and 1.500 MAX Mcal/h, the cylinder 2) must move from notch 1,5 (MIN) to notch 6 (MAX), representing a travel of 4,5 notches.

  • Page 17: Setting The Servomotor

    Proceed as follows (burner OFF): • Calculate from graph (A) the notches for the desired MIN and MAX outputs and then for re- lated travel of cylinder 2)(B): notch MAX Æ notch MIN. • Release the variable profile cam 2)(C)p.18 from the servo-motor by pressing lever 9)(C)p.18.

  • Page 18: Setting Gas Pressure

    5.3 SETTING GAS PRESSURE PRESSURE GOVERNOR 6)(A) pag. 9 - To increase P1 output pressure, tighten screw 1) on pressure governor (A). Position A = P1 max. - To decrease P1 output pressure, unscrew screw 1) on pressure governor (A). Position B = P1 min.

  • Page 19: Setting Max Output

    · The burner is factory-calibrated for a MIN-MAX output ratio of 1:3-1:4. The ball joint 1)(A) which drives arm (B) of the gas butterfly valve is posi- tioned at 90°. In this way, the gas butterfly valve passes through an angle of 90° when cam 2)(C) com- pletes its full 130°...

  • Page 20: Setting Min Output

    - If delivery needs to be reduced, slightly close adjustment valve 9)(A)p.9 fitted on the gas train (the pressure governor has already been cali- brated to the minimum pressure, see point 3.2). - If delivery needs to be increased, first fully open adjustment valve 9) and then, if this is insuffi- cient, tighten the screw 1) of governor (A)p.17 by 1-2 turns to increase output pressure.

  • Page 21: Setting Intermediate Outputs

    5.4.3 SETTING INTERMEDIATE OUT- AIR PRESSURE SWITCH 7)(A) pag. 4 PUTS (required particularly for modulating opera- tion) No adjustment is required. The adjustment is made by acting on intermedi- ate screws 1)(A)p.19 which regulate the profile of the cam, taking care not to move those for minimum and maximum delivery.

  • Page 22: Setting Combustion

    5.8 SETTING COMBUSTION DIN 4788 (2-90) Burner output max = 100 mg/kWh = 80 = 0,008% MAX burner output must not exceed the output max = 200 mg/kWh = 100 0,01% envisaged for the boiler; it should be adjusted in = min relation to the user's effective heating require- = min...

  • Page 23: Operation

    6 - OPERATION NORMAL FIRING (n° seconds from instant 0) Burner starting (A) · When the load control TL closes, the control box 12)(A)p.4 programmes the starting phase. The following odescription refers to gas train (A)p.9 in which the adjustment valve 9) opens with two speeds: 1.

  • Page 24: Final Controls

    7 FINAL CONTROLS 1 kW = 860 kcal/h 1 Mcal = 1000 kcal - Check burner halts or lock-outs as follows: detach: (kW) η (%) = 100 - Qs (%) PB (kW) = η · a lead from the minimum gas pressure switch ·...
  • Page 25 The control box 12)(A)p.4 is fitted with a disc which rotates during the firing programme, which can be seen through the transparent lock-out reset button. When the burner does not fire or comes to a halt following a fault, the symbol which appears behind the reset button indicates the type of problem. SYMBOL FAULT PROBABLE CAUSE...

  • Page 26: Maintenance

    10 MAINTENANCE Maintenance should be performed by qualified personnel at least once a year. - Check meter-burner pipework for leaks in rela- tion to local regulations, - Check the efficiency of the gas valve leak de- tection control device 1)(A), by simulating a D286 failed valve leak detection.

  • Page 27: Table

    11 TABLE BURNER MODEL TYPE CODE BOILER COMPANY MODEL = Delivery = Carbon monoxide = Fan pressure = Mains pressure NOx = Nitrogen monoxide = Temperature or pressure = Adjustment pressure = Temperature = Pressure of the combustion chamber = Combustion head pressure = Pressure +/- in smoke stack = Loss of heat CO2 = Carbon dioxide...
  • Page 28 SMOKE FLUE GAS BOILER STACK mbar mbar mbar °C mbar °C mbar °C/bar mbar SMOKE FLUE GAS BOILER STACK mbar mbar mbar °C mbar °C mbar °C/bar mbar SMOKE FLUE GAS BOILER STACK mbar mbar mbar °C mbar °C mbar °C/bar mbar SMOKE...
  • Page 32 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.riello.com Subject to modifications...

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