Dungs VPM-VC Руководство - Страница 6

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Installation examples
The functional principle must be selected in accordance with the local regulations
Prevent soiling by using appropriate gas filters
Use of pilot valves recommended
Please note: Switch positions � � � �
According to
EN1643, 1 filling or
1 emptying attempt
for max. 3 s into the
burner chamber is
admissible (DUNGS
as-delivered con-
figuration). At filling
and emptying times
of 1 s of the gas
main valves, max. 3
attempts are admis-
sible.
1a
Direct valve check via LGV, venting through roof
Valve check system component: VPM-VC, Pp, LGV
- - -
LGV
VPM VC
(NO)
P
p
GW 1
V1
V2
1b
Direct valve check via LGV, venting into the burner chamber
Valve check system component: VPM-VC, Pp, LGV
- - -
LGV
VPM VC
(NO)
P
p
GW 1
V1
V2
Notes regarding 1a, 1b, 2:
If a valve closed when not powered is replaced instead of a LGV (open when not powered), it must be connected
to output V2 (terminal 8).
When filling or
emptying attempts
are carried out via
pilot valves, the
situation described
in �, shows that
the specifications
of EN1643 are
also met with 10
filling or emptying
attempts if pilot
valves are used
that can reach at
most only 1/10 of
the maximum gas
flow of the main
valves.
GW1
V2
TR
N
VPM-VC
1 a + 1b
Direkte Ventilkontrolle
mit LGV
GW1
V2
TR
N
VPM-VC
1 a + 1b
Direkte Ventilkontrolle
mit LGV
If the valve check is
carried after a regu-
lar shutdown, the
system setup must
ensure that locking
the system prevents
a valve check during
a fault situation. This
can only be achieved
by safe interruption
of the power supply
to the VPM when a
fault occurs.
FA
Pp1
V1
LGV
N
FA
Pp1
V1
LGV
N
If this switch position
is used, parameter
setting should be
checked via the
VisionBox.
DIP-mode:
A: 1100
1001 �
0011 � �
B: xxxx
C: 1100
0110
0011 � �
Parameter:
---
Pp1
Pp2
L1
DIP-mode:
A: 1100
1001 �
0011 � �
B: xxxx
C: 1100 �
0110
0011 � �
Parameter:
---
Pp1
Pp2
L1
6 ... 10