13
NOTE: (Boiler Model Only)
In line water condi-
tioners fitted to the cold mains supply both of chem-
ical and magnetic type are suitable for use with the
DHW stove.
DIRECT DOMESTIC CYLINDER
A 227 Litre (60 Gallon) direct domestic cylinder can
be connected to this cooker using copper or stain-
less steel 28mm O.D. (1”) flow & return pipes. We
recommend that the cylinder is lagged along with
the pipework. We do not recommend the use of a
direct cylinder in areas where there is a high
concentration of lime or minerals in the water.
INDIRECT DOMESTIC CYLINDER
A 227 Litre (60 Gallon) indirect domestic cylinder
can be connected to this cooker using copper or
stainless steel 28mm O.D (1”) flow and return pipes.
We recommend that the cylinder is lagged along the
pipework.
PIPE THERMOSTAT
The fitting of a pipe thermostat to the flow pipe is
essential in order to activate the water circulation
pump when the water reaches the selected
temperature.
When the water temperature falls below the select-
ed temperature the pipe thermostat will cut off the
water circulation pump in order to allow the boiler to
recover.
Fig.12
GRAVITY CIRCUIT
The gravity circuit consists of the domestic hot water
tank of 135 litres indirect cylinder, fixed in an upright
position, recommended for hot water storage and it
should be connected to the boiler by 28mm diame-
ter flow and return piping. The pipes should not
exceed 7.8 meters (25ft) in length and cylinder and
pipework should be fully lagged. The shorter the run
of pipe work the more effective the water heating.
Fig 13
REGULATIONS
The plumbing must be in accordance with all
relevant regulations and practices. It must include a
gravity circuit with expansion pipe, open to the
atmosphere. The central heating will normally be
pump-driven as with other types of boilers.
The water system must be properly vented and a
double feed indirect cylinder to the current issue of
BS 1566, Copper indirect cylinders for domestic
purposes, Part 1 Specification for double feed
indirect cylinders is necessary where there is a
combined hot water and central heating system.
SAFETY VALVE
A non-adjustable 3 bar safety valve must be fitted to
the primary flow pipe adjacent to boiler connection
ensuring that any discharge will not create a hazard
to occupants or cause damage to electrical compo-
nents or property.
NOTE:
We strongly advise the use of pipe lagging
if the installation is likely to be exposed to situations
where the temperatures will drop to a level consis-
tent with frost.
Only competent personnel should be employed to
carry out any work on your domestic hot water sys-
tem.
