Ravenheat RSF 82E, Installation And Servicing Instructions

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- Gradually open stopcock at the filling
point connection to the central heating
system until water is heard to flow.
- Starting with the lowest radiator open
each air release tap in turn. Close it only
when clear water, free of bubbles, flows
out. In the same way release air from
any high points in the pipework.
- Continue filling the system until at least
1.5 bar registers on gauge. Then turn off
the filling points stopcock.
- Inspect the system for water soundness
and remedy any leaks discovered.
6.1
6.2
6.2.1
6.3
6.4
Fig. 49
Each boiler has been through a rigorous
operational procedure at our factory and
should not require any further adjustment. If
in the unlikely event of the appliance not
operating correctly, please turn to the Fault
Finding and Logic Sequence charts.
GAS SUPPLY INSTALLATION
Inspect the entire installation including the
gas meter, test for soundness and purge, all
as described in BS 6891.
ELECTRICAL INSTALLATION
Preliminary electrical system checks to
ensure electrical safety shall be carried out
by a competent person (earth continuity,
polarity, resistance to earth). Those checks
are outlined in the <<Instructions for British
Gas Multimeter>> Booklet. If a fault has
occurred on the appliance the fault finding
procedure should be followed as specified
under the servicing s e c t i o n o f t h i s
document.
INITIAL FILLING OF THE SYSTEM
Open central heating flow and return valves.
Unscrew the cap on automatic air release
valve one full turn (leave open permanently).
- Close all air release taps on the central
heating system.
6.5 SETTING THE SYSTEM DESIGN
PRESSURE
The design pressure must be a min. 1 bar
and max. 1.5 bar. These figures are read off
the pressure gauge.
- The actual reading should ideally be 1
bar + the height in metres to the highest
point of the system above the base of
the appliance (up to a max of 1.5 bar).
N.B.: The safety valve is set to lift a 3
bars (30 mt/42.5 psig).
- To lower the system pressure to the
required value remove drain point (Fig.
93) or drain on the heating circuit.
6.6 FILLING THE HOT WATER SYSTEM
Close all hot water draw-off taps.
Open the cold water inlet cock.
Slowlv open each draw-off tap until clear
water-is discharged.
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