9 Start-up
34
Installation and maintenance instructions Energy
7
0020300877_01
Checking the CO
₂
content
Removed
front casing
Fitted front
casing
Natural gas H
Natural gas H
CO
₂
at full load
9.0
±
1.0 vol. %
9.2
±
1.0 vol. %
CO at full load
≤
250 ppm
≤
250 ppm
CO/CO
₂
≤
0.0031
≤
0.0031
◁
The value is OK.
▽
The value is not OK; you cannot start up the
product.
▶
Inform Customer Service.
9.11
Thoroughly flushing the heating installation
("hot")
1.
Operate the appliance until the boiler and the heating
system are up to temperature.
2.
Check the heating system for leaks.
3.
Connect a hose to the drain valve located at the lowest
position of the heating system.
4.
Shut off the boiler, open the drain valve and all purge
valves on the radiators and allow the water to flow out
of the heating system and the boiler quickly and fully.
5.
Close the drain valve.
6.
Fill the heating system again with water as described in
Filling the heating installation and Purging the heating
installation.
7.
Re-fill the system until the system design pressure of
0,1 MPa (1,0 bar) is attained.
Note
The actual reading on the digital pressure
gauge should ideally be 0,05 MPa (0,5 bar)
plus an additional pressure corresponding
to the highest point of the system above the
base of the boiler
–
10 m head equals an ad-
ditional 1 bar reading on the pressure gauge.
The minimum pressure should not be less
than 0,1 MPa (1 bar) in any installation. If
the system is to be treated with an inhibitor it
should be applied at this stage in accordance
with the manufacturer’s instructions
8.
Install the front casing.
9.12
Checking leak-tightness
▶
Check the gas pipe, the heating circuit and the hot water
circuit for leak-tightness.
▶
Check that the air/flue pipe has been installed correctly.
Condition
: Room-sealed operation
▶
Check whether the vacuum chamber has been closed
tightly.
9.13
Checking the heating mode
1.
Activate the heating mode on the user interface.
2.
Turn all thermostatic valves on the radiators until they
are fully open.
3.
Allow the product to operate for at least 15 minutes.
4.
Purge the heating installation.
5.
Activate the display for the current operating mode.
(
Status codes
–
Overview (
◁
If the product is working correctly, the display shows
S.04
.
