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INSTALLATION
TORRENT INDIRECT - OPEN VENTED HEATINg SYSTEm (FIgURE 4)
The open vented primary system is filled via the feed and expansion cistern supplied.
It is therefore important that the unit is positioned at the highest point in the system.
Ensuring that the minimum head for the boiler and system pump is as required
by the boiler manufacturers.
1) If the flow and return pipes between the boiler and Torrent - Indirect store are
dipped then the boiler selected must be suitable for use in a sealed heating
system i.e. it must be fitted with an overheat thermostat (Figure 4).
) Any boiler can be used with Torrent- Indirect provided the flow pipe from the
boiler to the Torrent is continuously rising. (Figure 5)
3) The flow pipe between the boiler and the Torrent thermal store is part of
the open vent and therefore it must not be fitted with any isolating valve, non-
return valve or any other component which can obstruct the flow.
4) The minimum size of flow and return pipes between the boiler and the Torrent
should be mm copper or equivalent.
5) Where the radiators are to be fitted higher than the Torrent, then, the
feed and expansion cistern can be sited at higher level but a maximum 6m
from the base of the Torrent. The water level must be at least 50mm higher
than the highest radiator in the system. (Figure 5)
6) The installer must fit the feed and vent pipes pipes ensuring continuous
rise on the open vent and no isolating valves in either open vent or cold feed
pipes. A combined feed and vent pipe shold not be used with Torrent.
7) The installer must fit the close coupled open vent and cold feed pipes for heating
circuit as shown schematically in Figures 4 and 5.
8) The primary thermal store and the heating systems are filled from the same feed
and expansion cistern.
9) It is important to ensure that both the primary store and the system are fitted
and vented before switching on the boiler and the immersion heater if fitted.
10)The water level must be set correctly by
adjusting the ballvalve in the F & E cistern.
A mm connection is provided for the
overflow/warning pipe, which should be
no less than 0mm internal diameter and
have a continuous fall.
11)This should be fitted to discharge clear
of the building and be situated so that
any overflow can be easily observed. The
warning pipe should be installed in either
high temperature uPVC or copper and
should not have any other connections to it.
Alternatively the Torrent thermal store can
be filled by a temporary connection without
the use of a ball valve or requirement for an
overflow/warning pipe.
ImPORTANT:
Care must be taken to ensure
the unit is filled to the correct water level
when using a temporary connection. It is
also important to ensure the unit does not
onverflow when filling.
TORRENT INDIRECT - SEALED HEATINg
SYSTEm (FIgURE 6)
1. Only boilers suitable for sealed system
must be used in this configuration and a
typical arrangement is shown in Figure 6.
. The feed and expansion cistern may
be sited above the Torrent in the same
cupboard.
3. The F & E cistern on sealed heating system
only fills the thermal store. Therefore
the provision must be made for filling
the primary radiator/boiler circuit by
incorporating approved filling loop and
method.
4. The water level must be set correctly in
the F & E cistern when filling manually
or by adjusting the ballvalve. A mm
connection is provided for the overflow/
warning pipe, which should be no less
than 0mm internal diameter and have a
continuous fall.
5. This should be fitted to discharge clear
of the building and be situated so that
any overflow can be easily observed. The
warning pipe should be installed in either
high temperature uPVC or copper and
should not have any other connections
to it.
6. It is important to ensure that both
primary store and the system are fitted and
vented before switching on the boiler and
the immersion heater if fitted.
Figure 4 Boiler with dipped flow and return
Boiler suitable for
sealed system
applications
Boiler
Auto
Air Vent
Boiler manufacturers minimum
head requirements must be
adhered to.
Highest point of system
50mm min.
Summary of Contents for Torrent T144 DE
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