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Overview
Combustion control unit MPA22
Function description
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Additional propane gas valve ¬
1
2
Safety gas valve Y15
3
Main gas valve Y13
4
Burner motor M1
5
Ignition transformer T1
6
Power 230V-50Hz
7
GW max: Bridge connector
(Safety chain inlet ¬)
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8
GW min F4
GW VPS ¬
9
10
Air pressure switch F6
Light sensor ¬
11
Flame monitor UV/Ion ¬
12
Pulse counter ¬
13
14
Gas servomotor Y11
09/2005 - Art. Nr. 13 019 526A
In addition to the function of a gas
combustion control unit, the MPA 22
combustion control unit also realises
power modulation of the burner via the
actuation of air flaps and gas throttle in
an electronic connection. The electronic
connection controls the opening of the
gas throttle proportional to the air flap
along a curve based on 10 adjustment
points. During start up, the adjustment
points are defined based on the
measurement values of the exhaust
gas analysis.
This guarantees optimal combustion
across the entire performance
modulation of the burner.
With adjustment point P0, a separate
ignition load can be defined for the
burner.
The thresholds for the normal range are
defined with adjustment points "bu" and
"bo" (lower operasssting point and
upper operating point). In addition,
other optional functions, such as leak
checks, reventilation or waiting times
can be activated.
The combustion control unit is operated
via a display and operating unit.
15
Air servomotor Y10
16
Display and operating unit
connection A
e-Bus connection ¬
17
18
Power regulator connection 4P
19
Boiler control panel connection 7P
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Option
EN
11
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