7 Start-up
18
Installation and maintenance instructions ecoCRAFT exclusive 0020149561_01
▶
Fill the condensate siphon with approx. 1.5 litres of wa-
ter via the condensate discharge pipe.
▶
Slide the condensate discharge pipe back onto the con-
densate trap.
7.10
Checking and adjusting the gas ratio
setting
7.10.1 Checking the gas setting
Note
Before starting up the boiler compare the details
of the type of gas specified on the identification
plate with the type of gas supplied at the install-
ation site. This boiler is suitable for Natural Gas
ONLY.
The combustion of this boiler has been checked, adjusted
and preset at the factory for operation on the type of gas
defined on the identification plate. No measurement of the
combustion is necessary to set up the boiler.
▶
Do not adjust the multifunctional automatic gas valve.
▶
Ensure:
–
that the boiler has been installed in accordance with
these instructions,
–
the integrity of the flue system and the flue seals, as
described in the flue installation instructions enclosed
with this boiler, and as described below
–
a visual check is carried out on the boiler combustion
circuit and the relevant seals,
–
that any defects have been corrected at this stage.
Proceed to put the boiler into operation as follows:
▶
Start the boiler by activating the test program
P.1
(
→
Page 15).
▶
Check for tightness of the flue gas system. (
→
Page 18)
▶
Check the gas inlet working pressure. (
→
Page 18)
▶
Check the gas flow rate. (
→
Page 19)
▶
Please note that you must re-measure the gas flow rate
or the gas inlet working pressure, if changes were re-
quired to correct any issues found.
7.10.2 Checking for tightness of the flue gas
system
Caution.
Risk of malfunctions due to dirt on the
burner.
If the combustion air contains particles of dirt,
this may make the burner dirty.
▶
Take particular care to ensure that there
is no building dust, fibres of insulating
material or pollen in the combustion air.
1.
Check the integrity of the flues system according to
TB 008 (Edition 2) and TB 017.
2.
Check entire length of the air and flue gas system for
correct installation to ensure that:
–
there are no blockages,
–
all joints are sound,
–
the fall angle is correct
–
it is adequately supported
–
all in accordance with the relevant flue installation
instructions.
3.
Correct the defects.
4.
If you cannot correct the defects you must not start up
the boiler.
7.10.3 Checking the gas inlet working pressure
1.
Ensure that the gas inlet working pressure can be
obtained with all other gas appliances in the property
working.
2.
Remove the front casing from the boiler.
3.
Close gas isolation valve of the boiler.
1
4.
Loosen the sealing screw of the pressure measurement
nipple marked „in“
(1)
on the gas pipe.
5.
Connect a digital pressure gauge or U-tube manometer.
6.
Open gas isolation valve of the boiler.
7.
Start the boiler by activating the test program
P.1
(
→
Page 15).
–
In addition, ensure that maximum heat can be dis-
sipated into the heating system.
8.
With the boiler operating at full load check that the gas
inlet working pressure at the reference test point
(1)
complies with the requirements:
Boiler
Natural Gas (G 20)
Minimum
pressure
Maximum
pressure
ecoCRAFT exclusive
VKK GB 806/3-E R1 -
VKK GB 2806/3-E R1
1.7 kPa
(17.0 mbar)
2.5 kPa
(25.0 mbar)
9.
Should the pressure recorded at the reference test point
in the boiler be lower than indicated check if there is
any blockage in the pipework or if the pipework is un-
dersized.
10. If the supply pressure is out of tolerance contact your
Emergency Service Provider.
11. If the gas inlet working pressure at the reference test
point
(1)
is not within the permissible range and you
cannot correct the failure, notify the gas supply com-
pany.
12. Take the boiler out of operation by pressing the
+
and
i
buttons simultaneously and turn down both thermostat
control knobs.
13. Close the gas isolation valve of the boiler.
