21
E
.
3
0
.0
7
.0
7
•
G
.
0
7
.0
6
.1
1
26. Gas train KEV
II
1 ½" , KEV 2" and KEV DN65
The air pressure connection nipple must be screwed into the gas jacket at the top.
Connect the blue hose to the "AIR" connection on the gas train and the air pressure connection on the gas
jacket. The blue hose serves as a control line for the gas train and must be routed in a loose loop without
kinking.
Remove the plate for covering the adjustment screws from the gas pressure regulator.
Start the burner.
1. Setting the air surplus in high and low-load operation
•
Set the air flap positions P9 for high-load operation and P1 for low-load operation according to
27. Adjustment tables. Follow the setting procedure described in 19. Adjustment mode for pneumatic
gas-fired operation with MPA 22 display.
•
In high-load operation, set the air surplus with the "large flame" adjustment screw on the gas pressure
regulator. The CO
2
level in the flue gas should be 9-10% for natural gas.
•
In high-load operation, set the air surplus with the "small flame" adjustment screw on the gas pressure
regulator. The CO
2
level in the flue gas should be 9-10% for natural gas. The low-load setting influ-
ences the high-load setting.
•
In high-load operation, check the air surplus and, if necessary, correct the setting with the "large
flame" adjustment screw on the gas pressure regulator.
2. Setting the output in high and low-load operation
•
Check the high-load setting via the gas flow at the gas meter or compare the nozzle pressure with the
values stated in 27. Adjustment tables. The output can be increased by opening the air flap (to
increase P9) and reduced by closing the air flap (to reduce P9). The air surplus is not affected by this
adjustment.
•
Check the low-load setting via the gas flow at the gas meter or compare the nozzle pressure with the
values stated in 27. Adjustment tables. The output can be increased by opening the air flap (increase
P1) and reduced by closing the air flap (reduce P1). The air surplus is not affected by this adjustment.
Installing the gas train
Installation position
only in horizontal line, not tilted.
Minimum distance to walling:
20 mm
Screw the measuring nipple for combustion chamber pressure into the gas jacket at the top.
Route the connecting hose between the measuring nipple for combustion chamber pressure and the gas train in a loose loop.
Gas pressure monitor
SKP 10
VGD
Pulse line p
G
SKP 70
Cover plate for
"AIR" air pressure connection
(gas inlet pressure)
Gas pressure monitor
for leak check
Adjustment screws
Y2
Y1
Direction of flow
Burner
Gas connection
