2/18
14698_r00
−
prearranged for the remote connection of the manual reset and
status displaying signals through a BRAHMA module type 865
(containing a two-colour LED and a reset push-button);
−
communication interface type RS-232 for diagnostic and set-up
functions (through BRAHMA serial interface type 810 and
management software);
−
inbuilt EMC filter;
−
two fuses provided with removing tool to protect the power
supply network on both potentials;
−
connections for on-board safety earthing.
TECHNICAL DATA
Nominal supply voltage:
220÷240V
AC
@ 50/60 Hz
Power consumption:
20 VA
Operating temperature range:
-20 °C
÷
+60 °C
Humidity:
95% max. @ +40 °C
Protection rating:
IP00
IP40 with box (upon
request)
Internal fuse rating:
6.3 A slow-blow
for TC340P1:
3.15 A slow-blow
External fuse rating (recommended):
6.3 A fast-blow
1
for TC340P1:
3.15 A slow-blow
1
Max. total weight:
250 gr. approx.
EC type certificate:
CE0051-PIN0051BU3887
NOTES
1) The external protection fuse rating should be selected considering the max.
load consumption in the most unfavourable operation stage and conditions.
Classification codes according to EN 298:
TC340A.**.**
F T C L X N
TC340A.**.** opt. V
F T L L X N
TC340A.**.** opt. E
F T C V X N
TC340A.**.** opt. V E
F T V V X N
TC340P.**.**
F M C L X N
TC340P.**.** opt. V
F M L L X N
TC340P.**.** opt. E
F M C V X N
TC340P.**.** opt. V E
F M V V X N
Times:
Pre-purge time (TP):
0 … 60 s
Safety time (TS):
3 … 120 s
Response time in case of flame failure:
< 1 s
Post-purge times
- on burner motor (EF) (t
POST
):
- on hot air blower (FAN) (t
FS
):
2
0 … 1200 s
0 … 1200 s
Delay time on FAN activation (t
FA
):
2
0 … 1200 s
Inter-waiting or inter-purge time:
1 … 240 s
Waiting time for modulation start (t
RP1
):
1 … 240 s
Lockout delay for extraneous light (opt.
Knn):
0 … 60 s
Lockout for insufficient air flow (opt.
Qnn)
3
:
3 … 120 s
Pre-ignition time (opt. Jnn):
1 … 60 s
Recycling attempts (opt. Ynn):
1 … 10
Varnishing / Box:
upon request
NOTES
2) This parameter will be described in detail in the “Heating mode (FAN
function)” section. It can be modified through BRAHMA serial interface type
810 and management software.
3) If the air pressure switch remains in “no-air-flow” position (fan-assisted
versions) or if the burner motor revolutions per minute are insufficient in
case a brushless fan is used (premix versions).
4) This parameter can be modified through BRAHMA serial interface type 810
and management software.
Max. contact rating (@ 240V - 50Hz):
Hot air blower (FAN):
3.5 A cos
ϕ
≥
0.4
Burner motor (EF):
0.5 A cos
ϕ
≥
0.4
Remote ignition device (ACC1):
0.8 A cos
ϕ
≥
0.4
First valve stage (EV1):
0.4 A cos
ϕ
≥
0.4
6
Second valve stage (EV2):
0.4 A cos
ϕ
≥
0.4
6
Current modulator:
≤
170 mA
DC
@ 24 V
DC
5
NOTES
5) The limit can be increased up to 350mA upon request.
6) The valve load power supply is available on two independent connectors
(J7 and J8). In case both connectors are used, the max. rating for each
output should be considered equal to 0.2 A cos
ϕ
≥
0.4 approx.
Max. cable length for external components:
OpenTherm™ interfaces:
50 m
Ignition device (high voltage cables):
2 m
Any other cable (load power supply cables, user
interface connection cable, …):
1 m
Inbuilt ignition transformer (ACC2):
7
Peak voltage:
8
upon request:
15 kV
18 kV
Peak current:
800 mA
Spark repetition rate:
9
upon request:
25 Hz
1 … 50 Hz
Recommended spark gap:
2 ÷ 4 mm
Power consumption:
2.5 VA
Spark energy:
20 mJ
NOTES
7) For appliances equipped with fan-assisted burner only.
8) Value measured with 30 pF load.
9) ATTENTION: the ignition device output is not safe to touch if the spark
repetition rate is higher than 25Hz; in this case the appliance will have to
be provided with further protection.
Flame monitoring
The flame detection device exploits the rectification property of the
flame.
An important safety aspect to note is that the control unit is more
flame-sensitive at start-up or during the waiting/pre-purge time
(negative differential switching).
Min. ionization current:
upon request:
0.5
µ
A
1.2
µ
A
Recommended ionization current:
3 ÷ 5 times the
min. one
Min. insulation resistance of detection
cable and electrode to earth:
≥
50 M
Ω
Max. electrode stray capacitance:
≤
1nF
Max. short-circuit current:
< 200
µ
A
AC
System adjustment temperatures:
Manual reset limit temperature (T
L
):
10
100 °C
Switch-off temperature (T
OFF
):
11
70 °C
Re-ignition temperature (T
ON
):
11
50 °C
Ventilation temperature (T
V
):
11
30 °C
Ventilation-stop temperature (T
SV
):
11
10 °C
NOTES
10) Available in versions using BRAHMA safety probe type ST16.
11) This parameter can be set up on customer's request and modified through
BRAHMA serial interface type 810 and management software.
