gledhill Torrent Stainless OV, Инструкция по эксплуатации, Страница: 8 / 25

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INSTALLATION INSTALLATION
TORRENT STAINLESS OV TORRENT STAINLESS SP SOL
Sealed heating system
All Torrent Stainless SP models are suitable for
sealed heating systems up to 3.5 bar maximum
operating pressure, however the normal
pressure relief valve setting is 3.0 bar. The typical
layout of the open vented ‘Y Plan’ and ‘S Plan’ for
the indirect Torrent Stainless models is shown
in the diagrams on this page.
A boiler used in a sealed heating system must
be suitable for this application i.e. it must be
fitted with an overheat cut-out thermostat
and can be located above the thermal store
F&E tank, as can the central heating system
connected to the boiler.
It is recommended that the F&E tank (for the
thermal store) is fitted at a high level in the same
cupboard as the Torrent Stainless. However
it can be fitted remotely up to 10m above
the base of the Torrent Stainless, and sized to
accomodate the expansion of the cylinder and
any attached central heating and solid fuel
volumes.
The F&E tank overflow/warning pipe should
be installed in a material suitable for a heating
system feed and expansion tank.
There shall be no permanent connection to
the mains water supply for filling the heating
system even through a non-return valve
without the approval of the Local Water
Authority. An approved filling loop is required
for filling the heating system, which should be
disconnected after commissioning the system.
The filling loop should be located adjacent
to the boiler along with a suitable expansion
vessel, pressure gauge, pressure relief valve and
discharge arrangement.
The minimum system pressure should not be
less than the static head plus 0.5 bar i.e. the
height of the highest point in the system above
the expansion vessel plus a margin of 0.5 bar.
A solid fuel boiler is also able to be connected
to the Torrent Stainless SP, please refer to page
19 for further information.
Where a sealed primary coil is used, the thermal
store is a hot water only thermal store. If too
much heat is taken out of store, then hot water
performance will be limited. The hot water priority
should be protected by use of an appropriate
thermostat. Heating can be taken from the SP
thermal store to provide auxilliary heating to
towel radiators, which are low output. It is not
suitable for full central heating systems, this
should be taken directly from the boiler.
The two diagrams shown on this page show
how an ‘S’ plan and ‘Y’ plan may be used in
conjunction with the Torrent Stainless OV, with
another space heating supply being taken
direct from the store. The type of space heating
used is the installer’s choice and the diagrams
only show possible layouts.
The auto bypass is positioned here to allow
minimum flow rates through the boiler as
TRVs close; and to allow for boilers with pump
overrun.
Off delay timers may be considered for use
in situations where the boiler pump overrun
is controlled by sensing a temperature drop
before shutting off. This type of boiler may
cause the pump to run on for some minutes
while the temperature slowly drops, but the
store temperature may also drop causing the
boiler to fire again; the boiler then short cycles.
If an off delay timer is used it allows the pump
to overrun for about a minute to remove any
excess heat; then shuts off the pump, but it does
not remove so much of the heat from the store
that it causes the boiler to fire again.
A solid fuel boiler is also able to be connected
to the Torrent Stainless OV, please refer to page
19 for further information.
S Plan Sealed Main Heating System
Max.
height
10m
Sealed
system kit
Auxiliary
heating
Min.
250mm
S Plan Open Vented Heating System
Max.
height
10m
Min. 250mm
Auxiliary
central heating
Y Plan Open Vented Heating System
Max.
height
10m
Min. 250mm
Auxiliary
central heating
Y Plan Sealed Main Heating System
Max.
height
10m
Sealed
system kit
Auxiliary
heating
Min.
250mm