22
Euroflame Oil Boilers
3.13.2 Fully pumped - (See Fig. 13)
Fig. 13 - Fully pumped system
Fig. 14 - Sealed system
3.13.3 Kitchen/Utility sealed system - (See Fig. 14)
1 The boiler is suitable only for use with a sealed
system complying with the requirements of BS
5449.
The maximum temperature of the central heating
water is 85°C.
2 The boiler is supplied with the following items
factory fitted:-
a A diaphragm expansion vessel complying with
BS 4814, pre-charged at 1.0 bar.
b System pressure gauge, with an operating range
of 1 to 4 bar.
c Pressure relief safety valve complying with BS
6759 and set to operate at 3 bar.
d Circulating pump with isolating valves.
e Automatic air vent.
f Filling loop. This must be isolated and
disconnected after filling the system.
3 The central heating system volume, using the
expansion vessel as supplied, must not exceed the
volume shown in section 2.1. For further guidance
refer to BS 7074:1.
Refer to section 4.14 for further details of the
expansion vessel.
4 The system design pressure (cold) should be
between 0.5 and 1.0 bar. This pressure is
equivalent to the maximum static head (see Fig.
14) in bar + 0.3 (1 bar = 10.2 metres of water).
5 If thermostatic radiator valves are fitted to all
radiators, a system by-pass must be fitted.
6 Provision should be made to replace water lost
from the system. This may be done manually
(where allowed by the local Water Undertaking)
using the filling loop arrangement supplied with the
boiler.
3 - GENERAL BOILER INFORMATION
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