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ENGLISH
EM 16/M-E
EM 26/M-E
MB VEF 4
07-3/4”
(Pi)
MB VEF 4
07-3/4” (Pi)
MB VEF 412-
1”1/4 (Pi)
Pt
Pt
Legend
Pi Inlet pressure
(combustion head + gas train)
Pt Pressure at combustion head
Thermal output
Pressure loss (mbars)
Pressure loss (mbars)
Thermal output
PRESSURE CURVES/GAS DELIVERY
These curves show the gas pressure, in millibars, (at points Pi and Pt along the gas train) necessary to produce a given
delivery in m
3
/h. The pressures have been measured with the burner working and with a pressure of 0 mbar in the com-
bustion chamber. If the chamber is pressurized, the gas pressure necessary will be that given in the diagram plus that in
the combustion chamber.
Legend
1 Interception cock - airtight at 1 bar and pressure loss
≤
0.5 mbar.
2 Vibration-damping
joint
3 Gas pressure point for pressure reading
4 Gas
filter
5 Gas pressure regulator
6 Minimum gas pressure control device (pressure switch)
7 Class A solenoid safety valve. Closure time Tc
≤
1”.
8 Class A solenoid adjustment valve, with slow
opening or various stages and incorporated gas delivery
adjustment device. Closure time Tc
≤
1”.
9 Gas delivery regulator, normally incorporated in either
solenoid valve 7 or 8.
10 Combustion head.
11 Minimum air pressure control device
12 Maximum gas pressure (over 350 kW) control device (on
request)
13 Tightness control device (on request)
BASIC
GAS TRAIN