BRAHMA NDM31 Manual

NEW DIGITAL MICROFLAT SERIES
TYPES
ND(M/E).. NDT(M/E)..
ND(M/E)O.. NDT(M/E)O..
AUTOMATIC CONTROL DIGITAL SYSTEM FOR
GAS, OIL OR BIOMASS BURNERS AND
APPLIANCES
26295_r10
APPLICATION
The microcontroller-based controllers of the NEW DIGITAL
MICROFLAT series are an evolution of the DIGITAL MICROFLAT
"N" series and they are specifically designed to control burners with
gaseous fuel (with or without fan in the combustion circuit), liquid or
solid in non-permanent operation applications.
These devices are provided with non-volatile or volatile lockout, in
the first case restarting the controller from a safety lockout
condition can be accomplished only by a manual reset, while in the
second case restarting the controller from a safety lockout
condition can be achieved only by the interruption of the power
supply and its subsequent restoration (and not by switching the
heating demand device).
The automatic controllers of this series are suitable for:
Combi, Heating, Steam boilers;
-
- Hot air generators, Radiant tube heaters;
Fan-assisted convector heater, Water heater;
-
Power washer, Furnaces, Monoblock burners;
-
- Premix, Biomass burners or decorative fireplaces.
The NEW DIGITAL MICROFLAT series keeps the main features
and reliability of the previous MICROFLAT and DIGITAL
MICROFLAT series, and in addition it's got accessories related to
the control of wireless device, brushless motors, gas pressure and
air flow rate and options related to the driving of auxiliary motors,
direct current solenoid valves, modulating solenoid valves among
which the new Brahma solenoid valve type VCMxx (with or without
pressure control). Besides, this series can be employed also in
appliances with liquid (oil) or solid fuel (biomass). The flexibility of
the microcontroller-base technology creates different possibilities
related to the installation times and to the operation modes. The
controllers of this series are suitable to be used in burners of gas in
accordance with EN746-2, EN676, EN525, EN1020 and EN1319
standards, of oil in accordance with part 2 of DIN4794 standard
(December 1980 edition related to the hot air generators, only in
version TW=20s and TS=5s) or of biomass in accordance with
EN303-5.
FEATURES
The main features of this series are:
− EC- type certification (CE PIN 0476CQ0671) in accordance
with Gas Appliances Directive 2009/142/EC (until 20 April
2018) and with Gas Appliances Regulation (EU) 2016/426
(from 21 April 2018);
− conformity to EC directives, Electromagnetic compatibility*
EMC (immunity) 2014/30/EU and Low-voltage directive
2014/35/EU
− In accordance with EN298:2012 (European Standard for
automatic gas and oil burner control systems and flame
detection) and with EN60730-2-5 (European Standard for
automatic controls with C class software);
− AGA- type certification (Certificate no. 8010 rev. 04) in
accordance to standards requirements AS 4625-2008 + EN
298-2012;
− A microcontroller based technology for precise and repeatable
installation times, two independent safety contacts for driving
the solenoid valve;
− Possibility to drive the Brahma modulating solenoid valve Type
VCMxx and VCMxx *S (solenoid valve with pressure sensor);
− Possibility to drive the first direct current solenoid valve by
means of a high voltage modulator circuit or through a bridge
rectifier (integrated);
− Output employable for the control of the second stage
(intermittent pilot system), for the control of auxiliary fans or
acting as a NO auxiliary contact (this contact is not isolated
from the main supply voltage by reinforced isolation, therefore it
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