Regulating The System For Gas Operation; Setting The Gas Pressure Switch, Air Pressure Switch - elco VGL 06.1200 DP Betriebsanleitung

Start-up

Regulating the system for gas operation

Setting the gas pressure switch, air pressure switch

Regulating the burner for gas
operation
• Open the gas ball valve.
• Set the gas and air pressure
switches to the minimum setting.
• Connect a micro-amperemeter
(0-500µA) instead of the measure-
ment bridge (check polarity).
• Press S1/H10.1 - S29J - S2K -
S4 Gas.
• Switch on the boiler control system.
• Unlock the control and safety unit.
• Gas leak test device activates the
burner after a successful check.
• After the flame has formed, check
the combustion values (CO,CO
• Check the UV flow (target value
between 200 and 500 μA).
• Read the gas flow rate from the gas
counter.
• Increase the power to high load by
pressing + on the pulsation switch S3.
• Check the exhaust gas values.
Re-adjust the gas/air ratio depending
on the measurement value:
with SKP, act on adjustment screw
–
R. To do this, remove the upper
cover. Higher CO in direction +.
2
Lower CO in direction -. (see
2
symbols on the top SKP70 page 34)
with MBVEF valve, act on screw V.
–
Higher CO in direction of greater scale
2
setting. Lower CO in direction of
2
46
smaller scale setting. (see page 34)
• To achieve the desired level of effi-
ciency, use the CO
gas temperature settings recom-
mended by the boiler manufacturer.
• Check the UV flow (target value
between 200 and 500 μA).
• Read the gas flow rate from the gas
counter.
• Bring the burner to low load and
check the combustion values.
Depending on the measurement
value, adjust screw D on the SKP
regulator, or screw N on the MBVEF
regulator.
• Define the desired partial load with
).
2
key S3. To do this, re-adjust cam V
as required.
• Check the exhaust gas values again
and re-adjust the gas/air ratio
depending on the measurement
value.
• Bring the burner back to full load;
check the combustion values.
• If the measurement values have
changed through the adjustment of
screw D on the SKP regulator or
screw N on the MBVEF valve, the
ratio R on the SKP regulator, or ratio
V on the MBVEF valve must be
adjusted in the desired direction.
m
Dimension Y of the burner head
setting may not be changed.
• If the burner head setting (dimension Y)
06/2011 - Art. Nr. 13 018 118C
is changed, the entire adjustment
procedure for oil operation must be
repeated.
and exhaust
2
• Limit switch I may no longer be
changed, as the 3 stage oil has
already been adjusted.
Setting the ignition load
• Set the ignition load for gas
operation with cam III so that a safe
burner start is guaranteed. Here, the
ignition load can be set above or
below the low load value.
Setting the gas pressure switch
• Set the switch to the minimum input
pressure.
• Slowly close the gas shut-off valve.
• The burner should switch off
because of lack of gas pressure.
• Re-open the gas shut-off valve.
Setting the air pressure switch
• Once the burner is again burning at
low load, determine the shut-off
point of the air pressure switch by
turning the scale disk.
• Set the air pressure switch 10%
below this shut-off value.