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Commissioning
Inspection
Before commissioning the system for
the first time, the following
inspections must be carried out:
• Observe the operating instructions of
the boiler manufacturer. The boiler
must be fitted and ready to operate
• The heating system must be filled with
sufficient water
• The entire system must be checked to
ensure that the electrical wiring of all
the system components is correct
• Check the direction of rotation of the
burner motor
• Ensure that the temperature or
pressure regulator, the limiter, the
safety switches and electrical limit
switches are set correctly.
• Check the gas connection pressure
• Check for leaks in the gas supply
elements
• Check bleeding of the fuel supply lines
(no trapped air)
• Are exhaust gas ducts open and is
there an adequate supply of fresh air?
• Is the burner in the start position: air
flap in the "CLOSED" position?
• The automatic firing device for the
electronic compound is unlocked and
in the starting position
Important:
No object which is capable of being
sucked up (for example, cloths,
instructions) must be left within 0.5m of
the burner air extraction intake. If these
objects are sucked into the burner, it
may lead to malfunctions and dangerous
operating states. This may result in a
switch to malfunction mode or damage
to the environment and to the
installation, and may even cause injury.
Fuel-oil commissioning
Open all the gate valves on the fuel-oil
supply system.
• Set the fuel selection via remote
control to "Fuel-oil"
• Fill the pump with fuel-oil
• Attach manometer for supply and
return pressure monitoring.
• Set the pressure gauge for pressure
regulation on the intake side of the
pump or check the ring line pressure.
Bleeding
Switch on the burner briefly and check
whether the direction of rotation is
correct. Bleed the fuel-oil tube and the
fuel-oil pump.
Please note:
At the factory, the hydraulic system is
filled with test oil. When commissioning
the unit for the first time, this may cause
ignition problems. To protect the pump
If the oil pressure regulator is
depressurised in the as-delivered
condition, this means that no pressure
has been set. When commissioning the
burner, the oil pressure must be
increased slowly until it reaches the
operating value.
Before the first fuel release, a
function test of the burner program
sequence must be carried out.
• Open the fuel-oil gate valve
• Disable oil solenoid valve in supply
(e.g. disconnect plug,
• remove coil, unplug)
• Start the burner and monitor the
program sequence to ensure that the
correct start-up sequence is followed:
1. Fan on
2. Preventilation of air flaps
3. Air pressure regulation
4. Part load of air flap
5. Pump starts
6. Ignition
7. Valves open (disconnected valve
remains shut)
8. Lockout after safety time expires (see
control and safety unit)
• Valve closes again
• Unlock control and safety unit of
electronic combination
Gas commissioning
• Connect the test devices for the gas
head pressure on the test connection
after the gas control damper and the
air pressure on the test connection for
the burner.
• Open the gas shut-off valve before the
gas valves and check the gas
pressure from the pressure gauge.
Before the first fuel release, a
function test must be carried out on
the burner program sequence.
03/2016 - Art. Nr. 4200 1044 8002A
• Open the gas shut-off valve on the
valve group briefly until there is
pressure, then shut it again
• Start the burner and monitor the
program sequence to ensure that the
correct start-up sequence is followed:
1.
Valve leaktightness check
2.
Fan
3.
Preventilation of air flaps
4.
Air pressure regulation
5.
Part load of air flap
6.
Ignition
7.
Open the valves
8.
Lockout after safety time expires
(see automatic firing device) or
system shuts down for a lack of
gas
• Unlock the automatic firing device for
the electronic compound.
Note for positioning the gas throttle
in N8/N9/EKEVO 8/EKEVO 9 burners
The position indicator on the gas throttle
can be modified on the installation
without using a tool. As a result, this
position indication is not necessarily that
of the throttle.
To obtain a reliable indication for the
position of the gas throttle, use the
screw (1) integrated in the coupling. The
screw position controls the angular
position of the gas throttle.
N8/N9
EKEVO8/EKEVO9
53
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