The installation of any electrical services during the
installation of this boiler and the associated heating
system must be carried out by a registered competent
electrician and in accordance with the requirements of
the latest issue of BS 7671.
Rayburn 212SFW
- It is recommended that a 140 litre
(30 galls) indirect hot water storage cylinder of the
double feed type, (e.g. manufactured by Albion
Cylinders) complying with BS 1566 Part 1 : DF Type 8
should be lagged and fixed vertically as near as
possible to the cooker.
The maximum water pressure is 1.75 bar.
The water capacity of the boiler is 7 litres.
DESN 510179 D
Fig. 1
Minimum clearance to
combustible materials
150mm.
ELECTRICAL CONNECTIONS
HOT WATER SYSTEM
The 28mm minimum diameter primary flow and return
pipes must not exceed 10m in length and pipes longer
than 5m must be lagged.
Ensure that the flow pipe has an open vent and rises
continuously from the boiler to the cylinder to ensure
good gravity circulation.
The water draw-off pipes to the taps must be dead-leg
connection from the vent/expansion pipe.
A towel rail of not more than 0.5m
2
heating surface may
be heated providing the flow and return pipes are not
more than 5m each in length, and provided the cylinder
and towel rail are lagged. When the hot water storage
cylinder is very closely coupled to the boiler, a towel rail
is advisable as a heat leak, and lagging should not be
applied. A radiator is not recommended.
To obtain the boiler outputs the fire must be idled
overnight, and daytime cooking take place.
All installations must be fitted with a drain tap at the
lowest point of the system.
2
