Electrical Connections - Ecoflam Multicalor 170.1 Manual

B gas/light-oil dual burners

Hide thumbs Also See for Multicalor 170.1:

Manual (41 pages)

Manual (41 pages)

Table Of Contents

Table of Contents

Available languages

All burners are factory tested and set at 400 V 50 Hz three-phase for motors and 230 V 50 Hz monophase with neutral

for auxiliaries. If it is necessary to supply the burner at 230 V 50 Hz without neutral,make the necessary alterations

referring to the wiring diagram of the burner and check that the termal relay is within the absorption range of the

motor. Also check that the fan motor rotates in the correct direction.

Once connected the burner to the gas pipeline, it is necessary to control that this last is perfectly sealed. Also verify that

the chimney is not obstructed. Open the gas cock and carefully bleed the piping through the pressure gauge connector,

then check the pressure value trough a suitable gauge. Power on the system and adjust the thermostats to the desired

temperature. When thermostats close, the sealing control device runs a seal test of valves; at the end of the test the bur-

ner will be enabled to run the start-up sequence.

Dual fuel gas/light-oil fuel burners must always be adjusted for light-oil as first ignition. After having installed the bur-

ner, check the following points: - Burner's power and protection fuses. – Motors connections. – That pipe length is the

suitable one and relevant sealing. – That the fuel type is suitable for the burner. – Thermostats connections and the

safety devices. – The direction of motors rotation. – The correct adjustment of motors protections. – That the nozzles

flow rates are the suitable ones related to boiler's output. Connect a manometer to the light-oil pump. When all the

above conditions are met, it is possible to proceed with the first ignition of the burner. Switch on the burner. The con-

trol box powers the light-oil pump, as well as the fan, thus starting the prepurging phase of the

combustion chamber with the max. air flow rate. At the end of prepurging, the air damper gear

motor sets to the 1st light-oil stage (Low flame) whilst the control box powers the ignition

transformer and opens the safety and the 1st stage solenoid valves. The burner ignites in Low

flame. After a safety period of 3 seconds from the ignition, the transformer is switched off and

after 10 seconds the air damper gear motor sets the burner to High flame (2nd stage). In case

of a faulty ignition, the control box switches the burners to lockout safety condition within 3 seconds. In this case, the

burner must be rearmed manually. In order to obtain the best combustion it is necessary to adjust the burner in both

Low and High flame stages, according to the instructions supplied with (air damper gear motor and firing head adjust-

ments). During this phase, it is possible to manually switch from Low flame to High flame and back through the

High/Low manual selector switch. At the end of the adjustment operations, set the selector to High position. For a cor-

rect adjustment of the burner, it will be necessary to carry out some combustion analyses at the chimney.

IMPORTANT: to obtain the right adjustment of the combustion and thermal capacity it is important to analyze the

reducts of combustion with the aid of suitable instruments. The combustion and thermal capacity adjustment is done

simultaneously, together with the analysis of the products of combustion, making sure that the measured values are sui-

table and that they comply with current safety standards. On this matter, please refer to the table and figure below.

THESE OPERATIONS MUST BE DONE BY PROFESSIONALLY-QUALIFIED TECHNICIANS.

NOTE:

ALL SAFETY DEVICES (AIR PRESSURE SWITCH, MINIMUM GAS PRESSURE SWITCH, GAS SOLENOID

VALVES AND GAS GOVERNOR) SHALL BE DULY SEALED AFTER CALIBRATION AND BURNER START

UP BY ECOFLAM'S TECHNICIANS.

Natural Gas

9,6%

CO <100 ppm