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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
1/13

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Summary of Contents for BRAHMA DV Series

  • Page 1 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.
  • Page 2: Technical Data

    Max contact rating Table 1 – Main features of DV(M/E) units 0.5 A cos ϕ ≥ 0.4 Room thermostat: 0.5 A cos ϕ ≥ 0.4 Combustion fan: EN 298 Type Reset 0.5 A cos ϕ ≥ 0.4 Ignition transformer code Cross flow fan –...
  • Page 3 The electronic board equipped with surface mount components, representing the “logic core” of the system, and an innovative circuit patented by BRAHMA for the generation of the ignition spark (limiting electromagnetic interference to a minimum) have enabled to reduce the PCB dimensions; consequently, even the Fig.
  • Page 4 (Option “B”). − the ignition probes should be adjusted in the most stable way − Option 9 (“C3”, “C4”, “C5”): BRAHMA modulating valve type for a spark gap between 2-4 mm; VCM01 with soft-start function −...
  • Page 5 The following figure shows the wiring diagram for the connection of If insufficient or no air flow is detected at start-up or during the the control unit to a BRAHMA interface module. waiting/pre-purge time, the control unit will go to lockout within 3÷120 seconds (the time is settable upon request).
  • Page 6 BRAHMA valve type VCM0X without control BRAHMA valve type VCM0X with soft-start control during ignition BRAHMA valve type VCM0X with soft-start control during ignition and during the delay time to reach the second flow rate value BRAHMA valve type VCM0X with soft-start control during ignition, during the delay time to reach the second...
  • Page 7 No letter: no user interface. Standard mode Un * BRAHMA user interface module available (see “TECHNICAL DATA” paragraph) * Note: the letter “n” indicates the user interface reference number representing a specific function. For further details, please refer to our data sheets about user interface modules for DMN series burner control units.
  • Page 8: Wiring Diagrams

    WIRING DIAGRAMS The following wiring diagrams refer to the most complete device versions and show which parts are available or different according to the options requested. FUSE MAIN SWITCH ROOM SAFETY AIR PRESSURE REMOTE RESET LOCKOUT SIGNAL THERMOSTAT THERMOSTAT SWITCH (note 1) VCM01 VALVE Note 1: not available in case of volatile lockout (option E)
  • Page 9 Type DTVM11 – DTVE11 - DTVM12 – DTVE12 Type DTVM11PR – DTVE11PR - DTVM12PR – DTVE12PR Type DTVM31 – DTVE31 - DTVM32 – DTVE32 Type DTVM31PR – DTVE31PR - DTVM32PR – DTVE32PR Notes: (1) available in case of option "Un" only (2) in case of option T1 or T2, the wiring diagram will be as follows: Option T1...
  • Page 10: Operating Cycles

    OPERATING CYCLES STANDARD VERSIONS WITHOUT SAFETY THERMOSTAT DVM11 - DVE11 – DVM11PR – DVE11PR Ignition power Operation power DVM31 – DVE31 – DVM31PR – DVE31PR Ignition power Operation power DVM12 - DVE12 – DVM12PR – DVE12PR DVM32 – DVE32 – DVM32PR – DVE32PR STANDARD VERSIONS WITH SAFETY THERMOSTAT DTVM11 - DTVE11 –...
  • Page 11: Available Options

    AVAILABLE OPTIONS NOTA 1 NOTE 2 NOTA 1 TW/TP OPTION Q – Insufficient or OPTION Q – Air pressure switch no air flow OPTION S restoration failure OPTION K and Knn OPTION V FIRST CYCLE 1 TO 10 AVAILABLE RECYCLING ATTEMPTS TW/TP TW/TP TW/TP...
  • Page 12 AVAILABLE OPTIONS NOTE 2 -- 2nd stage -- 2nd stage -- 1st stage -- 1st stage OPTION G OPTION M1 OPTION M2 TPost TPost OPTION PT OPTION P (NOTE 1) NOTES The same behaviour occurs for the auxiliary cross flow fan in case of option “Onn”. The time required to shift from the first to the second modulation stage is settable upon request.
  • Page 13: Overall Dimensions

    83.5 ± 1 82 ± 1 Pressure test point Pressure test point ATTENTION -> Company Brahma S.p.A. takes no responsibility for any damage resulting from Customer's tampering with the device. BRAHMA S.p.A. Via del Pontiere, 31 37045 Legnago (VR) - ITALY Tel.

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