DeDietrich Elitec DTG 1304 Eco.NOx/V, Technical Instructions

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DTG 1300 Eco.NOx/V 23/06/05 - 300002940-001B
Operating cycle with the anti-smoke release thermostat cut
off
In the event of smoke release, the burner is cut and the boiler goes
into standby for 15 minutes. This timed phase is indicated by an
alarm indicator flashing. The 15 minute timed period can only be
interrupted by a sector cut.
Key :
A
Start of operation
A
1
Second ignition attempt
A
2
Third ignition attempt
B Formation of flame in ignition burner
C End of first ignition attempt
C
1
End of second ignition attempt
C
2
On safety through absence of flame signal
D Smoke anti-release thermostat cut
E Resetting
F Restart of heater
SF Burner flame signal
VA Alarm indicator
TA Ignition transformer
TAF Anti-backflow thermostat
TCH Heat requirement
VBA Ignition burner valve
VBP Main burner valve
ts Safety time : about 55 seconds
tn Anti-smoke release thermostat cooling time (times
vary)
t
TAF
Box standby time : 15 minutes
5 Checks and adjustments after commissioning
5.1 Checking pressure to the nozzle
`
Unscrew the screw inside the nozzle pressure socket a few
turns.
`
Connect a manometer to the pressure socket and check that
the pressure to the socket corresponds to the pressure stated
below. Adjust the pressure to the injectors if necessary.
`
Tighten the pressure socket screw.
`
Check the seal again
Checking burner safety
Cut the gas by closing the stop tap.
Check the reaction of the safety system. (Safety box on safety
because of ionisation fault).
Checking the safety thermostat
` Place the Summer/Winter switch on
%
to cut the heating
accelerator to prevent the temperature rising in the installation.
` Place the 3 position switch "
!
- AUTO - TEST STB" on the
TEST STB position. The burner starts regardless of the setting.
Keep the switch in this position until the safety thermostat cuts
(110ºC).
` To restart the heater, press the safety thermostat reset button
and repeat the starting operations.
Required input signals
Box output signals
Contact closed
Manifold pressure (mbar)
Natural gas H/E 15
Natural gas L/LL 12,1
Propane 29