17
Start-up
Checking procedure
Check the following prior to the
initial operation of the boiler system:
• Take care to observe the operating
instructions supplied by the boiler
manufacturer. The boiler must be
mounted ready for operation.
• Ensure that the heating system is
filled with water to capacity.
• Check the complete system for cor-
rect electrical wiring.
• Check the burner motor for correct
direction of rotation.
• Check for the proper setting of the
temperature and pressure controllers,
limiters, safety switches and electrical
limit switches.
• Check the gas connection pressure.
• Make a test of the all gas-carrying ele-
ments for absence of leaks.
• Bleed the fuel-carrying lines (make
sure they are free of air).
• Check the exhaust gas ports are ope-
ned and adequate fresh air intake is
ensured.
• With burner in starting position check
that air damper is in „CLOSED“ posi-
tion.
• Check that automatic furnace control-
ler is unlocked and that it is in original
position.
Gas butterfly valve:
The position indicator can be altered on
the system without the use of tools. As
a result, the position indicator is not
always a definitive indication of flap
position. The position of the gas flap is
always determined by the pin that forms
a positive connection with the valve
shaft and is arranged at a 90° angle to
the position of the valve.
Gas start-up
• Connect the measuring instruments
for the gas head pressure on the test
connection downstream of the gas
damper and the air pressure on the
burner test connection.
• Open the gas shut-off valve before the
gas-armatures and test the gas pres-
sure on the pressure gauge.
Prior to the initial fuel feed start
make a functional test of the burner
program flow:
• Shortly open the gas shut-off valve in
the valve group until pressure is avai-
lable and close again.
• Start burner and check program flow
for correct start-up sequence:
1.
Valve tightness check.
2.
Fan.
3.
Pre-ventilation damper.
4.
Check air pressure.
5.
Partial-load damper.
6.
Ignition.
7.
Valves open (disconnected valve
remains closed).
8.
Shut-off upon trouble after expiry
of safety period (see automatic
furnace controller) or shut-off
because of gas supply failure.
• Reset the Electronic Burner Controller
12/2011 14 072 205
Summary of Contents for Low-NOx N10.12000.30 G-EU2
Page 33: ...34 Manufacturer s declaration...
