DE DIETRICH ELITEC DTG 130 Eco.Nox - Manual (Page 30)

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DTG 130 Eco.NOx 01/02/11 - 300002915-001-E
7.1.4 Checking pressure to the nozzle
- Unscrew the screw inside the nozzle pressure socket a few turns.
- Connect a manometer to the pressure outlet. Check that the
pressure is correct.
- Tighten the pressure socket screw.
Carry out a gas tightness check.
7.1.5 Checking burner safety
Close the gas valve. Check the reaction of the safety system. (Safety box on safety
because of ionization fault).
7.1.6 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.
7.1.7 Checking the downdraught thermostat
In the event of smoke release by the anti-blowback device, the anti-
release safety device switches off the burner with the safety box on
standby for 15 minutes (this is indicated by an alarm indicator
flashing).
Check that the anti-overflow system is working correctly on
commissioning for the first time and during annual servicing of the
boiler.
„ Checking procedure
Only a qualified professional may carry out the check.
Ensure correct ventilation in the premises during the check.
- Turn of the heater and take out the smoke duct linking the heater
to the chimney. Block the boiler flue gas nozzle using a metal plate
(or other heat-resistant material).
- On start up, combustion products are evacuated to the back of the
heater by the anti-blowback device opening inside.
- The anti-blowback thermostat triggers for a few seconds, cuts the
burner and starts the safety box timer (alarm indicator flashing).
- After checking, re-assemble the smoke duct connecting the heater
to the chimney. Wait for about 5 minutes (thermostat cooling time)
the cut and reconnect the current using the Start/Stop switch. The
boiler restarts.
Manifold pressure
(mbar)
Natural gas H/E
GZ50
DTG 133 to 137
DTG 138 to 139 16
15
Natural gas L/LL 12.1
GZ410 12.5
Propane 29
H - 13 mbar
8.4 to 10.2
depending on the model
GZ350
6 to 7
depending on the model