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5
Commissioning Part I
5.4.2 ecoTEC plus combination boiler filling loop
3
Fig. 5.2 Filling device ecoTEC plus combination boiler
The ecoTEC plus combination boiler will be delivered
with a filling loop.
> Insert the double check valve (1) of the filling pipe at
the cold water shutoff valve and secure the double
check valve with the spring clip (2).
> To fill, first open the stop valve (3).
> Open the stop valve (4), so that water flows into the
heating system. Fill the heating system as described
in Section 5.4.4.
> Close both stop valves after filling and detach the fill-
ing device by pulling the double check valve from the
cold water stop valve.
i
Both stop valves must be closed while operat-
ing the heating system and the filling pipe
must be again detached at the double check
valve.
40
4
1
2
Fig. 5.3 Double check valve detached while heating
5.4.3
Filling the heating system in ecoTEC pro
combination boilers and ecoTEC plus system
boilers
The ecoTEC pro combination boilers and the
ecoTEC plus system boilers do not come with a filling
device. In these appliances, water is filled in the heating
system through a filling pipe provided onsite.
> Join a hose between a cold water dispensing valve
and the filling pipe of the heating system.
> To fill, first open the cold water dispensing valve.
> Open the stop valve on the filling pipe, so that water
flows into the heating system. Fill the heating system
as described in Section 5.4.4.
> After filling, close the stop valve on the filling pipe
and the cold water dispensing valve and remove the
filling hose.
5.4.4 Filling the heating system for the first time
i
As long as there is insufficient water pressure
in the heating system, the display indicator
changes between the error message F.22 and
the actual pressure indicator when the appli-
ance is on.
Fill the heating system as follows:
> Open all heating element thermostat valves.
> Check if both stop valves on the heater are open.
> Only in ecoTEC plus combination boilers: Connect the
filling pipe as described in Section 5.4.2.
> Only in ecoTEC plus system boilers and in ecoTEC pro
combination boilers: As described in Section 5.4.3 join
a hose between the cold water dispensing valve and
the filling pipe of the heating system.
> Open the cold water dispensing valve.
Instructions for installation and servicing ecoTEC 839592_13
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