Multi
MAXX
HG
Commissioning
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
35
7.1.2 Burner settings
Check and set burner fan speed:
Carry out the following inspection steps in this sequence (see Fig. 7-1, Pos. 5):
•
Maximum power - MAX
•
Minimum power - MIN
•
Ignition power - START
(when changing the MIN and MAX speed, the START speed changes automatically).
The burner fan speed values must be in accordance with Tab. 7-2.
Check gas inlet pressure P1
Measure the gas inlet pressure with a pressure gauge. This must be within 2 + 1 kPa.
The pressure can be adjusted by the main pressure reducing valve. If you are setting
up multiple units connected to one gas distribution system, it may be difficult to main-
tain the specified tolerance. This can be achieved by installing a gas pressure regulator
in front of the unit.
Flue gas adjustment
Measure O
2
, CO
2
and CO at min. and max. heating output to optimize gas combus-
tion. The correct O2 values are 4 ÷ 5.5%. The CO
2
value must not exceed 9.5% and
the CO value must be 0%.
First, the values for the
maximum heating power
are set. To adjust these values on
the gas valves, follow these steps:
– To increase the amount of gas and CO
2
: turn the V1 screw (see Fig. 7-1, Pos. 1)
counterclockwise (unscrew).
– To reduce the amount of gas and CO
2
: turn the screw V1 (see Fig. 7-1, Pos. 1)
clockwise (screw in).
The settling time after changing the values is at least 10 minutes.
After setting the maximum power, switch to burner for
minimum heating power
. To
adjust these values on the gas valves, follow these steps:
– To increase the amount of gas and CO
2
: turn screw V2 (see Fig. 7-1, Pos. 2)
clockwise (screw in).
– To reduce the amount of gas and CO
2
: turn screw V2 (see Fig. 7-1, Pos. 2)
counterclockwise (unscrew).
The gas valve V2 is covered with a metal cap!
Use only the T40 bit to adjust the V2 valve. The screw itself is plastic and can be
damaged if an unsuitable tool is used! The settling time after changing the values is at
least 10 minutes. Repeat until the above values are within the tolerance.
After the flue gas adjustment is complete, replace the screw cap.
Procedure for aligning a lot of tormented torch
Using a caliper, measure the depth of the V1 and V2 valve bolts as shown in Fig. 7-2.
The depth of the valve bolts should correspond to the values given in Tab. 7-2.
If not, set the valves to the correct position and try to start the burner.
NOTE!
The actual setting may only be carried out by specialized or authorized companies.
Observe the provisions of this Operation Manual at all times during commissioning.
For correct adjustment of the burner it is necessary to use the ESYS - V2208 service
software with the communication cable marked DI100001U and the flue gas
analyzer.
Unit type
Gas
burner type
Adjusting the depth of the valve bolts
[mm]
V1
V2
HG 24
RX 35
14,5
7,1
HG 25
RX 35
14,5
7,1
HG 44
RX 70
9,8
7,9
HG 45
RX 70
9,4
7,2
Tab. 7-1:
Adjusting the screw depth values for valves V1 and V2. Applies to both natural gas
and PB
