BRAHMA DV Series Manual

DV(M/E) SERIES
COMBINED UNITS
COMBINED UNITS FOR GAS APPLIANCES
WITH ½" CONNECTION EQUIPPED WITH A
DIGITAL IGNITION AND FLAME MONITORING
DEVICE AND A MODULATING ADJUSTMENT
SAFETY SOLENOID VALVE
15491_r01
APPLICATION
The DV(M/E) series microcontroller-based units are suitable to
control atmospheric gas burners with or without fan in the
combustion circuit.
These systems can be provided with non-volatile lockout (i.e.
restart from the safety shutdown condition can only be
accomplished by manually resetting the system) or with volatile
lockout (the unit can be restarted by cutting off and then restoring
the power supply).
The automatic control units of this series are suitable for:
- combi boilers;
heating boilers;
-
- steam boilers;
- hot air generators;
radiant tube heaters;
-
- fan convector heaters;
water heaters;
-
furnaces;
-
- monobloc burners.
The combined units of this series incorporate a BRAHMA Digital
Microflat "N" series ignition and flame monitoring device and a
BRAHMA modulating adjustment safety solenoid valve type
VCM0X* xx 230VDC. The versatility of microcontroller-based
technology offers several options regarding the operation
sequence and settable times.
The systems of this series are suitable to be used in gas-fired hot
air generators in accordance with the standards EN 525, EN 1020
and EN 1319.
FEATURES
Table 1 shows the main features of this series. Other important
features are mentioned below:
− EC type examination certificate (CE PIN 0694BP0610) in
accordance with the European Gas Appliance Directive
2009/142/CE;
− in accordance with EN 298:2003-09 (European standard for
automatic gas burner control and flame detection systems);
− microcontroller-based
repeatable setting times;
− two independent safety contacts for driving the gas valve;
− auxiliary output for the control of an auxiliary fan or acting as a
N.O. auxiliary contact (this is not a SELV contact and is
therefore not suitable to control circuits type SELV – Safety
Extra Low Voltage, e.g. 24V –);
− possibility to incorporate a highly efficient, completely solid-
state design ignition device equipped with an EMC filter;
− possibility to mount a (100 ÷ 470 Kohm) resistor in series to the
lockout signal output to prevent any failures in the unit in case
the connections are reversed by mistake;
− possible connection to a user interface module with diagnostic
and modulation parameter setting functions (BRAHMA module
type 807);
− flame detection by means of an electrode (ionization, exploiting
the flame rectification effect) or through a BRAHMA sensor type
FD(1/2)D;
− possibility to perform multiple re-ignition attempts (see option
Ynn);
− possibility to be connected to live-live power supply systems.
technology allowing accurate and
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