High Level Termination - Vaillant Vantage 120 Installation Instructions Manual

7 Installation requirements
Typical discharge pipe arrangement
metal discharge pipe from
temperature relief valve to tundish
safety
device
(e.g.
500 mm
temperature
tundish
maximum
relief valve)
300 mm
minimum
metal discharge pipe from tundish
with continuous fall. See 7.5
Table 4 and worked example
Fig. 8

High level termination

tundish
300 mm
minimum
Fig. 8a
20
Discharge below
fixed grating
fixed grating
trapped gully
discharge pipe
X = diameter of
discharge pipe
X
Under fault conditions, the discharge warning pipe can
emit water at near boiling temperature. Ensure the
discharge pipe terminates at a safe position where there
is no risk of contact with hot water by persons in or
about the building.
A suitable position for the discharge point is ideally
below a fixed grating and above the water seal in a
trapped gully. Downward discharges at low level, i. e. up
to 100 mm above external surfaces such as car parks,
hard standings, grassed areas, etc. are acceptable provi-
ding that where children may play or otherwise come
into contact with discharges a wire cage or similar guard
is positioned to prevent contact, whilst maintaining visi-
bility.
Do not fit any valves or taps to the discharge pipework.
Ensure the pipework has at least 1:200 fall
continuously from the tundish to the discharge point.
The discharge pipe from the pressure relief valve of the
Vaillant boiler may be teed-into the discharge pipework
from the VANTAGE downstream of the tundish.
7.5.1 High Level Termination
Providing that the point of termination is such that per-
sons in or around the building will not be endangered
should discharge take place, the method of termination
shown in fig. 8a is satisfactory. Examples of points to
consider when deciding whether a location for the high
level discharge is suitable are:
– The possibility, taking into account wind effect, that
someone may be in the path of the water being
discharged and if so, whether the temperature of the
discharge water will have been sufficiently reduced to
not be dangerous. Thermal conductivity of the struc-
ture's surface, climatic conditions and location and ori-
entation of the discharge pipe may or may not have
an effect on reducing the temperature of the dischar-
ge water.
– The location of windows and similar openings.
– The likelihood of a pram being left beneath the point
of discharge.
– The ability of the structures surface to withstand near
boiling water.
– The possibility of ice formation if water is discharged
onto pedestrian walkways.
Vaillant Vantage 120/150/200