ecoTEC pro - Vaillant

6.2 Connecting the hot and cold water
6.1 Fitting the hot and cold water connection
4
5
> Make the domestic hot and cold water connections as
shown.
> Ensure correct water pressure and flow requirements
and that any expansion can be accommodated with the
cold supply pipe work (¬ section 2.5.7).
6.3 Connecting the heating flow and heating
return
6.2 Fitting the heating flow and heating return
> Make the water connections as shown.
6
7
5
4
3
1
3
2
2
1
6.4 Low loss header
Hydraulic installation
A low loss header disconnects the boiler from the heating
system. The system is no longer dependent on the remaining
feed head of the boiler. In conjunction with the heating
pump, the low loss header ensures that a sufficiently high
minimum quantity of water is always circulating through
the boiler. No electrical accessories are required in order to
use a low loss header.
6.5 Connecting the condensate discharge
pipework
a Danger!
Risk of death from flue gases!
An empty or insufficiently filled condensate
trap may allow flue gas to escape into the
room air.
> Make sure that the condensate trap is
filled with water when switching on the
boiler.
a Danger!
Risk of death from flue gases!
If the condensate discharge pipework is
connected tightly to a fixed connection to
the waste water piping, the internal condensate
trap can be drained fully.
> Do not connect the condensate discharge
pipework tightly to the waste water
piping.
ecoTEC pro boilers are equipped with a condensate trap
that continually deposits the contents to the discharge pipe.
Installation and maintenance instructions ecoTEC pro 0020129672_03 21
4
a
3
Internal
stackpipe
b
3
Internal
discharge system
6.3 Condensate discharge pipework
5
c
6
Gulley
1
2
3
7
d
Soakaway
6