OSO HOTWATER Delta Twincoil DTC 200, Руководство пользователя

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7.2 Alternative discharge
Discharge pipes should be in metal and dedicat-
ed to the unvented cylinder. The pipe should have
a continuous fall and should terminate in a safe
and visible place.
Downward discharges at low level, i.e. up to 100
mm above external surfaces such as car parks,
hard standings, grassed areas etc. are accept-
able providing that where children may play or
otherwise come into contact with discharges, a
wire cage or similar guard is positioned to pre-
vent contact, whilst maintaining visibility.
Discharge at high level, i.e. into a metal hopper and
metal down pipe with the end of the discharge
pipe clearly visible (tundish visible or not) or onto
a roof capable of withstanding high temperature
discharges of water and 3 m from any plastics gut-
tering system that would collect such discharges
(tundish visible).
7.2.1 Single pipe discharge
Where a single pipe serves a number of discharges,
such as in blocks of flats, the number served should
be limited to not more than 6 systems so that any
installation discharging can be traced reasonably
easily. The single common discharge pipe should
be at least one pipe size larger than the largest indi-
vidual discharge pipe to be connected. For further
information contact your Building Control Office
Valve outlet
size
Minimum size of
discharge pipe D1
Minimum size of discharge
pipe D2 from tundish
Minimum resistance allowed, expressed as a
length of straight pipe (i.e. no elbows or bends)
Resistance created by
each elbow or bend
G 1/2 15 mm
22 mm Up to 9 m. 0.8 m.
28 mm Up to 18 m. 1.0 m.
35 mm Up to 27 m. 1.4 m.
G 3/4 22 mm
28 mm Up to 9 m. 1.0 m.
35 mm Up to 18 m. 1.4 m.
42 mm Up to 27 m. 1.7 m.
G 1 28 mm
35 mm Up to 9 m. 1.4 m.
42 mm Up to 18 m. 1.7 m.
54 mm Up to 27 m. 2.3 m.