M039150CF
29
Adjustments - brief description
z
Check that the combustion parameters are in the suggested limits.
z
Check the flow rate measuring it on the counter or, if it was not possible, verifying the combustion head pressure by means of a dif-
ferential pressure gauge.
z
Adjust the combustion values in the high-flame stage.
z
Set, now, the low flame output, acting on the low flame microswitch of the actuator in order to avoid the low flame output increasing
too much or that the flues temperature gets too low to cause condensation in the chimney.
Adjustment procedure for light oil operation
1
The light oil flow rate is set by choosing a nozzle that suits the boiler/utilisation output and setting the delivery and return pressure
values according to the ones quoted on the table below and the diagram on page 26 (as far as reading the pressure values, see
next paragraphs). Once the air and gas flow rates are adjusted, turn the burner off, switch the
CM
switch to the heavy oil operation
(OIL, on the burner control panel (see page 36).
2
with the electrical panel open, prime the oil pump acting on the related
CP
contactor (see next picture): check the pump motor rota-
tion and keep pressing for some seconds until the oil circuit is charged;
3
start the burner up by means of the thermostat series;
4
bleed the air from the
M
pressure gauge port (Fig. 25) by loosing the cap without removing it, then release the contactor.
Fig. 25
5
drive the burner to high flame stage, by means fo the thermostat
TAB
(high/low flame thermostat - see Wiring diagrams).
6
the nozzle supply pressure is already factory-set and must not be changed. Only if necessary, adjust the supply pressure as fol-
lows (see related paragraph); insert a pressure gauge into the port shown on Fig. 26 and act on on the pump adjusting screw
VR
(see Fig. 27) as to get the nozzle pressure at 20bar (Monarch or Fluidics nozzles - see page 26).
7
the oil flow rate in the high flame stage is the maximum pressure with the return line closed
8
To adjust the
air flow rate in the high flame stage
, loose the
RA
nut and screw
VRA
as to get the desired air flow rate: moving
the rod
TR
towards the air damper shaft, the air damper opens and consequently the air flow rate increases, moving it far from the
shaft the air damper closes and the air flow rate decreases.
Note:
once the procedure is perfomed, be sure that the blocking nut
RA
is fasten. Do not change the position of the air damper
rods.
Suntec AJ6
Suntec E7
Danfoss RSF41
Danfoss KSM..L..
Suntec TA.
CP
M
VR
VR
M
VR
M
M
VR
VR
M
