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4. CONTROL AND SECURITY BODIES
In this section you will find all the necessary
information to make it work properly MEC MIX
series generators.
The functioning of the MEC MIX series generator is
controlled by the BRAHMA digital thermoregulation
system mod. TC340.
The digital thermoregulation system performs
the dual function of room thermostat and clock
programmer as well as to diagnose any operating
errors.
The following are all the necessary instructions
for the correct use of the thermoregulation system
digital.
4.1 DESCRIPTION
This device is expressly designed for the control
of the safety cycle and for the thermoregulation in
the hot air generators using gas burners sealed
chamber with automatic ignition and pre-mixed
modulating burners.
4.2 GENERAL CHARACTERISTICS
Important device requirements are:
- compliance with EN 298: 2003-09 (European
standard for automatic programming systems
and verification of the presence of flame for
burners gas);
- CE certification in accordance with the Directive
Gas 90/396 / EEC and subsequent amendments
(Directive 93/68 / EEC);
- piloting and regulation by phase cutting of the
treated air convector fan (FAN);
- piloting and regulation of the fan
burner by phase cutting (applications with burners
forced draft gas) or via PWM signal (applications
with type gas burners premixed using type fans
brushless with integrated management
electronics);
- two independent safety contacts for the piloting
of the main gas solenoid valve EV1;
- exit for driving a transformer auxiliary electronic
ignition;
- regulation of the burner power via PWM signal
(for type applications premix);
- interfacing with a digital chronothermostat GA1
type via communication protocol OpenTherm ™;
- summer ventilation function (requires connection
to BRAHMA chronothermostat type GA1);
- management of a double NTC probe type ST16
for the control of the delivery temperature
air for regulation and safety functions;
- management of a double NTC probe type ST08
for the control of the delivery temperature
air for regulation functions;
- possibility of managing a thermostat safety;
- provision for the management of a probe ad
NTC type ST07 with room probe function or
external probe (fig 3);
- possibility of connecting a damper contact
fire barrier (optional);
- possibility of use in applications with regulation
by analogue 0¸10V signal (ex. PLC);
- manual reset button on the board;
- reporting of the operating status and of any
anomalies by means of two-colored LEDs;
- RS-232 communication interface for diagnostic
and setup functions;
- integrated EMI noise filter;
- two fuses with a suitable extractor for the power
line protection on both potentials;
- connections for integrated security lands on
card.
4.3 TECHNICAL DATA LOGIC CARD
Internal fuses:
6.3 A delayed type
for TC340P:
3.15 A delayed type
External fuses (recommended):
6.3 A quick type 1
for TC340P:
3.15 A rapid type 1
EC type examination certificate:
CE0051-PIN0051BU3887
Times:
Pre-ventilation time (TP):
0...60 s
Safety time (TS):
3 ... 120 s
Intervention time in case of shutdown
flame:
<1
s
Post-ventilation times
- on the burner fan
EF (tPOST):
0 ... 1200 s
- on treated air fan
FAN (tFS):
20 ... 1200 s
Delay time at power up
of the FAN fan (tFA)
:
2 0 ... 1200 s14
Waiting time or ventilation:
1 ... 240 s
Waiting time for entry
in modulation (tRP1):
1 ... 240 s
Block delay for parasitic
flame (option Knn):
0 ... 60 s
Block for air lack
(option Qnn) 3:
3 ... 120 s
SECTION B - USER
