elco Thision EVO WH 250-120, Руководство по эксплуатации и установке

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The Thision WH can be fed directly from the mains supply to the property without
the need for seperate feed cisterns or vent pipes. It is supplied complete with all its
necessary inlet and safety controls,
and thermal cut out .
Schematic installation details for unvented applications
PRESSURE REGULATING VALVE
c/w NON RETURN VALVE
T&P RELIEF
VA
L
VE
PRIMARY
FLOW &
RETURN
DRAIN COCK
(NOT SUPPLIED)
DISCHARGE
PIPE
TUNDISH
SECONDARY RETURN
T APPING
T O HOT
OUTLETS
MAINS
WATER
SUPP
LY
EXPANSION VA L VE
EXPANSION VESSEL
Thermal
cut out
Examples of acceptable discharge arrangements are;
i. Ideally below a fixed grating and above the water seal in a trapped gully.
ii. Downward discharges at low level; i.e. up to 100mm above external surfaces such
as car parks, hard standings, grassed areas etc. are acceptable providing 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 visibility.
iii. Discharges at high level; e.g. into a metal hopper and metal downpipe with the end of the
discharge pipe is clearly visible (tundish visible or not) or onto a roof capable of withstanding high
temperature discharges of water and 3m from any plastic guttering systems that would collect such
discharges (tundish visible).
iv. 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 individual discharge pipe (D2) to be connected. If unvented hot water storage systems are
installed where discharges from safety devices may not be apparent i.e. indwellings occupied by blind,
infirm or disabled people, consideration should be given to the installation of an electronically operated
device to warn when discharge takes place.
Note: The discharge will consist of scalding water and steam. Asphalt, roofing felt and non metallic
rainwater goods may be damaged by such discharges.
Unvented Applications
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