ECOMAX · Edition 02.11
28
6 .5 .2 Direct heating
Approx. 90 to 100 mbar air pressure should be present at the
eductor. Furthermore, the pressure losses due to pipework
and valves are to be taken into consideration.
For burner adjustment, we recommend using the differential
air pressure measuring kit DA 1 – see page 17 (Differential air
To ensure accurate measurement of the pressure differential,
the following boundary conditions for the design of the air
connection must be taken into account:
– A straight inlet section which is 3 to 5 times as long as the
nominal diameter of the connection must be provided up-
stream of the differential air pressure measuring kit DA 1.
– All valves and fittings should have the same nominal size
and nominal connection diameter.
– Use bends with the largest possible radii.
– The pressure loss of the measuring orifice is approx.
6 mbar.
A quick opening, quick closing air valve or solenoid actuator
should be used.
Burner
Air valve
Butterfly valve/sole-
noid actuator
Ecomax 0
VR 40..N
–
Ecomax 1
VR 50..N
–
Ecomax 2
VR 65..N
–
Ecomax 3
–
BVHM 65/MB7NM3
Ecomax 4
–
BVHM 80/MB7NM3
Ecomax 5
–
BVHM 80/MB7NM3
Ecomax 6
BVHM 100/MB7NM3
VR..N
ECOMAX 0
ECOMAX 1
ECOMAX 2
ECOMAX 3
…
ECOMAX 6
MB
7
+
BVHM
Other types of control on request.
Project planning information > Air connection