Setting The System Pressure; Lighting The Boiler - Savio 20/1 MFS User Manual

Commissioning
When the installation and filling are completed turn on the cen-
tral heating system (sect. 4.6) and run it until the temperature
has reached the boiler operating temperature. The system must
then be immediately flushed through.
The flushing procedure must be in line with BS7593: 1992 Treat-
ment of Water in Domestic Hot Water Central Heating Systems.
This procedure must be repeated twice more.
During this operation we highly recommend the use of a central
heating flushing detergent, whose function it is to dissolve any
foreign matter which may be in the system. i.e. Fernox Super-
floc.
We also recommend the use of an inhibitor in the system such
as Fernox MB1 universal.
The above operation could save the invalidation of your boilers
guarantee and will also prevent problems which you may ex-
perience in the future if an inhibitor is not used.
4.5

Setting the system pressure

The actual reading should ideally be 1,5 bar (21,3 psi).
4.6

Lighting the boiler

If external controls are fitted (e. g. Timeclock, room thermostat) en-
sure they " call for heat" .
Commissioning operations will be easier if controls are discon-
nected and terminals TT and TC are linked
(see sect. 3.9).
1 Switch on the mains electricity and turn the function switch " A"
as indicated.
The boiler will now go through an ignition sequence and the burner
will light.
If during the ignition attempt period (4 secs. approx.) the boiler falls
to light, the full sequence control p.c.b. will go to lockout and the
shut---down warning light " B"will appears.
To reset the boiler depress the reset push button " C"marked with
the symbol:
18
rev. 17.09.93
A
B
C