Dungs MPA 5111 User Manual

15 … 68
14 … 68
Printed in Germany • Edition 02.14 • Nr. 254 722
7.4.3 Operation with reduced pre-
aeration time
Under specic circumstances, the
MPA can be started with a reduced
pre-aeration time. For doing this, the
valve tightness test after a regular
switch-o (P41) must have been suc-
cessful.
Settings for the operation without re-
duced pre-aeration:
a) Pre-aeration time A (P60): desired
duration of the pre-aeration
b) Pre-aeration time B (P61): 0 (= is
never carried out)
The common pre-valve must be con-
nected to V1. The ignition gas valve
is connected to the output V2 of the
MPA and the main gas ame to the
freely congurable additional valve
output.
V1
V2
GDW
VPS
V Zusatz
Hauptgas
Zündgas
Setting for the operation with reduced
pre-aeration time:
a) Pre-aeration time A (P60): 0 or
pre-aeration time that is always
required
b) Pre-aeration time B (P61): desired
duration of pre-aeration if the
valve tightness test was NOT n-
ished successfully. This duration
is ignored if the valve tightness
test was successful after the last
regular switch-o (duration 0)!
7.4.4 Operation with ignition gas
ame
Basically, the MPA can be used
for the operation with ignition gas
ame.
Attention!
There is only one input for ame
monitoring (ionisation).
Attention!
The additional valve output must be
congured according to the desired
behaviour, that means that the mo-
ment for opening (P50 and P52) and
closing (P51 and P53) must be de-
ned via the respective parameters.
It is useful to open the main gas valve
shortly after the state has switched to
the stabilisation time B. So the igni-
tion gas ame can be stabilised dur-
ing the stabilisation time A, then, after
the state has switched to the stabili-
sation time B, the fan power can be
increased and, with a delay of a few
seconds (P52), the main gas valve
can be opened (for ex. if 50% of the
typical duration time to reach the new
fan power has been elapsed).
7.5 Special setting options
7.5.1 Dierent types of the air
pressure detector monitoring
See section 8 "Parameter descrip-
tion" - P14.
7.5.2 Dierent types of the tem-
perature controller default or heat
request
See section 8 "Parameter descrip-
tion" - P15.
7.5.3 Dierent types of the modu-
lation degree default
See section 8.7 "Parameter descrip-
tion" - P72.
7.5.4 Waiting program with open
safety chain or lack of gas on the
GDWVPS
See section 7.5 State 36: "Waiting
program".
Ignition gas
Main gas
additional

Dungs MPA 5111 Specifications

General

Brand	Dungs
Model	MPA 5111
Category	Control Unit
Language	English