GB-8
D
GB
F
NL
I
E
Coarse adjustment of the combustion air
volume
Close the gas supply.
Start pre-purge.
▷
For adjusting the air volume, especially for direct
heating, we recommend using the optional in-
termediate flange for differential pressure meas-
urement DA1.
▷
Air measuring nipple
L
,
external dia. = 9 mm
(0.35").
Measuring the differential air pressure using
DA
L
p
2
p
1
p
1
p
2
0
∆p
4
3
5
Loosen
the screws
2 turns.
Measuring the differential air pressure
without DA
L
L
p
2
p
1
p
1
p
2
0
∆p
4
3
5
Loosen
the screws
2 turns.
6
Set the required air pressure differential on the
air restrictor.
Coarse adjustment of motive air at the
eductor
▷
The settings of the air volume and the motive air
at the eductor affect each other. Coarse adjust-
ment should be carried out at the same time
during pre-purge.
p
FG
p
atm
p
FG
0
p
FG
8
7
9
Loosen
the screw
2 turns.
p
FG
p
atm
p
FG
0
p
FG
8
7
9
▷
Measure the negative flue gas pressure p
FG
against atmospheric pressure p
atm
.
0
Set the required negative flue gas pressure on
the motive air restrictor.
Pressure switch
▷
If the burner is equipped with a pressure switch
on the air connection to monitor the flow, the
switching point should be set to approx. 80%
of the pressure differential for the combustion air.
▷
If the burner is equipped with a pressure switch
for flue gas monitoring (indirect heating system
with ceramic radiant tube), the switching point
should be set to approx. 3 mbar.
Preparing the gas pressure measurement
Connect all measuring devices to the burner for
later adjustment.
▷
Leave the gas supply closed.
Read off the differential pressure for the required
gas flow rate from the enclosed flow rate curve.
p1: gas pressure upstream of the measuring
orifice, p2: gas pressure downstream of the
measuring orifice. Measuring range: select ap-
prox. 15 mbar.
▷
Gas measuring nipple
G
, external dia. = 9 mm
(0.35").
G
p
1
p
2
4
5
Loosen
the screws
2 turns.
Commissioning
Igniting and adjusting the burner
WARNING
Ensure adequate ventilation of the furnace chamber
before each burner start!
Risk of burning! Outflowing flue gases and burner
components are hot.
Wear ear defenders to protect yourself from harm-
ful noise.
Summary of Contents for ECOMAX Series
Page 17: ...GB 17 D GB...
