Vaillant ECOTEC PLUS VU 80 User Manual

Hydraulic installation
20 ecoTEC plus installation and maintenance instructions 0020134823_01
6
Power
Max. pressure
loss (mbar)
< 120 kW
86
in conjunction with the hydraulic cascade
< 240 kW
96
< 360 kW
76
< 480 kW
82
< 600 kW
87
< 720 kW
92
6.2 System separation pressure loss
6.3 Connecting the condensate drain pipework
a
Danger!
Risk of death from escaping flue gases!
An empty or insufficiently filled condensate
siphon may allow flue gases to escape into
the room air.
> Make sure that the condensate siphon is
filled with water when switching on the
boiler.
a
Danger!
Risk of death from escaping flue gases!
If the condensate drain pipework is con-
nected tightly to a fixed connection on the
waste-water piping, the internal condensate
siphon can be fully drained until empty.
> Do not connect the condensate drain
pipework tightly to the waste-water
piping.
> It is recommended that the condensate
is drained into a tundish. The condensate
drain is totally sealed. It may be possible
to empty the trap due to syphonic action
causing leackage of combustion
products:
Condensate forms in the boiler during combustion. The con-
densate drain pipework routes the condensate to the waste
water connection via a tundish.
The boiler is equipped with a condensate siphon. The filling
height is 145mm. The condensate siphon collects any con-
densate that occurs and feeds it into the condensate drain
pipework.
min.
180
2
3
1
6.3 Condensate siphon
Install the enclosed condensate siphon as follows:
> Place the condensate siphon on the underside of the
boiler on the condensate drain pipe and secure it using
the retaining clips.
> Leave an installation space of at least 180mm beneath
the condensate siphon so that you can clean the conden-
sate siphon in the case of service work.
> Check the connection for leaks.
> Check if a neutralising unit is required in accordance
with national regulations.
To connect the condensate drain pipework, proceed as
follows:
> Hang the condensate drain pipework of the boiler in the
pre-installed tundish.
> If required, guide the drain hose (1) of the automatic air
vent into the tundish.
i
The condensate drain pipework connected to the
condensate discharge of the boiler must have a
downward gradient throughout its entire length
(45mm per metre) and should be installed and
connected within the building to prevent possi-
ble freezing.
> The connections for the condensate drain pipework must
not be modified or blocked
> The condensate drain pipework must terminate in a suit-
able location.
Further information can be obtained from "BS 6798 Specifi-
cation for installation of gas-fired boilers of rated input not
exceeding 70 kW net". Before the boiler is started up, the
condensate siphon (1) must be filled with water as
described in the relevant section.

Vaillant ECOTEC PLUS VU 80 Specifications

General

Brand	Vaillant
Model	ECOTEC PLUS VU 80
Category	Boiler
Language	English