DOMESTIC HOT WATER SYSTEM
(DHW MODEL ONLY)
SYSTEM
The DHW Model must be connected to a fully
pumped system.
Care should be taken to ensure that the domestic
hot water installation is correctly installed and that it
complies with all relevant codes of practice. If this
appliances is being connected to an existing system,
it is strongly recommended to check the following:
(a)
That the system is sound.
(b)
That the pipe work is adequately insulated.
(c)
Check that the system is fitted with a circula
tion pump and a pipe stat and that both are
operating satisfactorily.
(d)
Are there any modifications necessary to
make the domestic hot water system more
efficient.
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
and also the use of a frost thermostat if the installa-
tion is likely to be exposed to situations where the
temperatures will drop to a level consistent with
frost.
Only competent personnel should be employed to
carry out any work on your domestic hot water sys-
tem.
It is important that no external control devices e.g.
economisers are directly fitted to this appliance
unless covered by these installation instructions or
agreed with the manufacturer in writing. Any direct
connection of a control device not approved by the
manufacturer could make the guarantee void.
PIPE FITTINGS
Materials used for installation work should be resist-
ant, sound and should conform to the current edi-
tions of the following or there equivalent:
1.1
Ferrous Materials
B.S. 4127: Stainless Steel Tubes
B.S. 1387: Steel Tubes
B.S. 1740: Steel Pipe Fittings
B.S. 6956: Jointing Materials
1.2
Non-Ferrous Materials
EN 29453: Soft Solder Alloys
B.S. 864: Compression Tube Fittings
B.S. 2871 & B.S. EN 1057 Copper and
Copper Alloys
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. (See Fig.20)
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 (See Fig. 21)
15
Fig.20
Fig.21
