Installation and maintenance instructions ecoTEC 0020029172_03
18
5.6
Expansion relief valve (safety group), heating
installation
bar
1
2
3
4
Fig. 5.10 Fitting the expansion relief valve
The ecoTEC is equipped ex factory with connections for
a safety group:
• Expansion relief valve (
1
)
• Pressure gauge (
2
)
• Filling device (combined filling and emptying valve) (
3
)
• Connection for expansion vessel (
4
)
As an accessory the expansion relief valve for the
heating installation is delivered with the boiler.
• Install the expansion relief valve (
1
).
• Fit a sufficiently sized expansion vessel (to be
provided on site) at the designated connection (
4
).
H
Danger!
Danger of burning and scalding!
The expansion relief valve (1) must be
noticeable! Terminate the line in such a way
that escaping water or steam cannot cause
injury to persons.
Please note that the end of the line must be
visible.
a
Caution!
Risk of damage!
The line should be terminated in such a way
that cables or other electrical components
cannot be damaged.
5.7 Condensate
drainage
pipework
2
1
7
d
c
6
5
a
3
4
3
b
Fig. 5.11 Condensate drainage pipework
Legend:
a Internal
stackpipe
b Internal drainage system
c Gully
d Soakaway
The ecoTEC boilers are equipped with a usual
condensate collector from which the condensate is
continuously removed via the drain pipe.
• Connect the condensate discharge (
1
) of the boiler to
a condensate drainage pipework (
2
) which has a
minimum internal diameter of 19 mm (22 mm outside
diameter for all external pipes) and should be made
from an acid-resistant material (e.g. plastic overflow
pipe).
h
Note!
The condensate drainage pipework connected to
the condensate discharge of the boiler must
have a fall throughout its entire length (45 mm
per metre) and should be installed and
connected within the building to prevent
freezing.
The condensate drainage pipework must terminate in a
suitable location, e.g.:
a) Preferably the condensate drainage pipework should
run and terminate internally to the house soil and
vent stack (at least 450 mm above the invert of the
stack). A siphon giving a water seal of at least 75 mm
(
3
) (built into the boiler) should be incorporated into
the pipe run, and there must be an air break (
4
) in the
condensate drainage pipework upstream of the
siphon.
5 Installation
Содержание ecoTEC VU 466/4
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