BURNER DESCRIPTION (A) 1 Fan 2 Fan motor 3 Air gate valve servomotor 4 Combustion head 5 Ignition electrodes 6 Flame stability disk 7 Panel board - cover 8 Air inlet to fan 9 Manifold 10 Thermal insulation screen for securing burner to boiler 11 Shutter 12 Air pressure test point...
• The burner stands on a wooden base which can be lifted by fork-lifts. Outer dimensions of packaging are indicated in (A). RL 250 MZ 1400 1040 • The weight of the burner complete with pack- aging is indicated in Table (A).
EN 267 regulations. Figure (B) indicates the diameter and length of the test combustion chamber. Example: 1600 1200 2000 2400 2800 3200 RL 250 MZ burner Output 1770 kW: diameter 80 cm - length 3 m. D3944 0,25 kg/h D1637...
(A). The position of the threaded holes can be marked using the thermal screen sup- plied with the burner. RL 250 MZ 325 - 368 BLAST TUBE LENGTH (B) The length of the blast tube must be selected...
NOZZLE ASSEMBLY Fit two nozzles with the box spanner 1)(A) (16 mm), after having removed the plastic plugs 2)(A), fitting the spanner through the central hole in the flame stability disk. Do not use any sealing products such as gas- kets, sealing compound, or tape.
FUEL SUPPLY Double-pipe circuit (A) The burner is equipped with a self-priming pump which is capable of feeding itself within the limits listed in the table at the side. The tank higher than the burner A The distance "P" must not exceed 10 meters in order to avoid subjecting the pump's seal to excessive strain;...
PUMP PUMP 1 - Suction G 1/2" SUNTEC TA 2 2 - Return G 1/2" 3 - Pressure gauge attachment G 1/8" 4 - Vacuum meter attachment G 1/8" 5 - Pressure adjustment screw 6 - By-pass screw A - Min. delivery rate at 12 bar pressure B - Delivery pressure range C - Max.
SERVOMOTOR (A) SERVOMOTOR The servomotor, by means of connection mech- anisms, simultaneously regulates air pressure and delivery and the flow of fuel in use. It features adjustable cams that operate as many switches. Cam 1: blue Limits servomotor travel to 0° position. With the burner off, the air damper is fully closed.
AIR PRESSURE SWITCH (A) CO CHECK AIR PRESSURE SWITCH 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 and slowly close the fan suction line inlet (for example, with cardboard) until the Bacharach index is equal...
FINAL CHECKS • Obscure the photocell and switch on the ther- mostats/pressure switches: the burner should start and then lock-out about 5 s after opening of the 1st stage operation valve. • Illuminate the photocell and switch on the ther- mostats/pressure switches: the burner should start and then go into lock-out after about 10 s.
BURNER OPERATION BURNER STARTING (A) - (B) Starting phases with progressive time intervals shown in seconds: • Thermostat/pressure switch TL closes. After about 3s: • 0 s : The control box starting cycle begins. • 2 s : The fan motor starts. Servomotor (12) stage position.
BURNER START-UP CYCLE DIAGNOSTICS During start-up, indication is according to the followig table: COLOUR CODE TABLE Sequences Colour code Pre-purging Ignition phase Operation, flame ok Operating with weak flame signal Electrical supply lower than ~ 170V Lock-out Extraneous light Key: Yellow Green RESETTING THE CONTROL BOX AND USING DIAGNOSTICS...
SIGNAL FAULT PROBABLE CAUSE SUGGESTED REMEDY No blink The burner does not - No electrical power supply ......Close all switches - Check fuses - The thermostat/pressure switch TL is open .
ACCESSORIES (optional) Code 3010322 • STATUS (see page 17) Code 3002719 • DIAGNOSTICS INTERFACE KIT Code 3000779 • SILENCER BOX KIT Code 3010422 • LONG HEAD KIT • RADIO DISTURBANCE PROTECTION KIT If the burner is installed in places particularly subject to radio disturbance (emission of signals Code 3010386 exceeding 10 V/m) owing to the presence of an INVERTER, or in applications where the length of the thermostat connections exceeds 20 metres, a protection kit is available as an interface...
NOTES The RL 250 MZ burner has been type- approved for intermittent operation. This means it shoulds compulsorily be stopped at least once every 24 hours to enable the control box to perform checks of its own efficiency at start-up. Burner halts are normally provided for automatically by the boiler load control system.
油泵 油泵 1 - 进油管 G 1/2" SUNTEC TA 2 2 - 回油管 G 1/2" 3 - 压力表表座 G 1/8" 4 - 真空计表座 G 1/8" 5 - 压力调节螺丝 6 - 旁路螺丝 A - 气压为 12 bar 时的最小供油量 B - 供油压力范围 C - 油泵吸入口最大真空度...