Ecoflam MAX GAS 170 P Manuel D'instructions page 9

Installation must be carried out in compliance with the local provisions
4,0
3,0
2,0
1,0
0,6
0,5
0,4
d=0,3
0,3
d=0,225
0,2
0,1
12 24 40 70 100
(a) d = diam tre chambre de combustion
kW
PRELIMINARY CHECKS
Before starting up the boiler check the following: - gas type and feed pressure; - gas valves closed; - the seals in the pipe
fittings; - gas pipe breather and input pressure; - that the cable complies with the diagram and the phase and neutral
wires correspond; - that the burner shuts down when the boiler thermostat opens; - the seal of the boiler furnace which
prevents air from entering; - the seal on the flue-boiler pipe fitting; - the condition of the flue (sealed, free from blocka-
ge, etc ). If all these conditions are present, start the burner. The control device starts the motor to carry out prewa-
shing of the combustion chamber. During this prewash period (about 30 seconds) the device checks that air pressure is
correct via the air pressure switch. At the end, it supplies power to the transformer and opens the gas valves. The flame
must be lit and stabilize within 3 seconds, which is the device's safety time limit. Check to ensure the flame is lit before
placing any control instrument in the flue. Adjust and check the gas flow necessary for the boiler at the meter. Adjust
the air flow according to the gas flow to obtain correct combustion.
IMPORTANT ADVICE
All adjustable parts must be fixed by the installer after making adjustments. Check flue combustion after each adjusti-
ment. The CO values must be approx. 9.7 (G20) 9.6 (G25 11.7 (13B) 11.7 (13P) axld the CO must be less than 75
2
ppm.
Adjusting the gas flow rate at the ignition for burners MAX GAS 170-250
The thermal power at the ignition, for such a burners, must be smaller than 120 kW or else than the ratio between the
rated thermal power and control box's safety time (ignition time is assumed equal to safety time, i.e. 3 seconds). The
adjustment of thermal power at the ignition is made by the manufacturer, anyhow, should it be necessary to intervene
on such an adjustment, proceed as follows: - check that the thermal power of the burner at full running is the correct
one. - With the burner switched off, disconnect the flame detection cable from relevant electrode, so as to make the
valve to automatically shut off at the ignition, after the safety time. - Make a reading on the gas meter. - Start the burner
GAS F
G20 (nat.gas) 34,02
G25 -
G30 (buthane) -
G31 (propane) 88
NOTE: should it be difficult to measure the quantity of delivered litres of gas, due to the particular meter's dial, it is
possible to repeat, sequentially, the above steps many times, so as to reach a significant amount of gas volume. In such a
case, the thermal power at the ignition shall be obtained by multiplying the ratio, between the amount of delivered
litres and the number of cumulated safety times (i.e. the value of the safety time multiplied by the number of ignitions)
by the F factor. See the following examples:
Example A: MAX GAS 170 burner, nat. gas; rated thermal power of 175 kW; safety time of 3 secs; a sequence of 4 igni-
tions is made, for a total amount of 41 delivered litres. The thermal power at the ignition, in kW, shall be:
41/(3x4)x34,02 = 116 kW and therefore correct, being smaller than 120 kW.
d=0,7
d=0,6
d=0,5
d=0,4
190 480 1200
STARTING-UP THE BURNER
and wait for the burner's lock out, after the repetition of the ignition sequence. - Make a
second reading on the meter, and note the number of delivered litres. - The delivered
thermal power, at the ignition, will then be equal to the ratio, between the delivered
litres and the safety time, multiplied by the F factor (as function of the type of gas used)
read on the table at the side. If the value thus obtained is higher than 120 kW it shall be
necessary to reduce the gas valve's initial flow rate. At the end, reconnect the flame detec-
tion cable to its relevant electrode.
The burners have been certified in combustion
d=0,8
chambers according to EN 676 standards.
Consult the burner manufacturer if the combu-
stion chamber of the boiler in which the burner
is to be installed has smaller dimensions.
2450
pag.9
420010249100 Max Gas 170 - 250 P
EN