Fililing The System - Worcester Greenstar 12i System Instruction Manual

SYSTEM FILL
Heating return
Stop
cock
~ORCESTER
Bosdl
Gt0t1p
Non retum
valve
~
Non return
valve
~
....
Temporary hose
Test cock
Mains
supply
Stopcock
..
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FIWNG THE SYSTEM
1 Tum on the water main and open
the
system valves.
2 Open all radiator valves.
3 Fill the system via a WRAS approved mting
loop.
4 Vent {A)
arrt
air from
the
boi:ler heat
exchanger
usrng
a suitab'e conteiner to
coiJect any water. Ensure tube outlet (B) is
directed away from the fan or
any
other
electrical c:omponent to prevent any water
damage. Also place a suitable cover over
the fan to prevent any spillage of water
on to electrical connections. Ensure the
cover Is re-moved afte-r venting,
5
\lant
all radiators.. re-tighten when oompJeted
and check the system and correct any leaks.
The boiler integral expansion vessel is
pre~
ch~ged
to 0 . 75 bar (equal to ;) static he(ld
of 7.5m (2211). A Schraedet type valve is
fined to the expansion vessel to allow for
pressure adjustment tf required.
If an extra expansion ves-sel is- fitted to the
central heating retum
1
adjust this to the
same pressure as the tJpp/iance interntJI
expansion
vessel,
refer to separate instruc·
lion$ with
the
extra expaMion ves$el.
6 Briefly open the pressure refief vatve to test
its operation.
7 If requited increase system pressure back to
1 bar.
8
Rotate
the
adjustable poinler
on the
pressure gauge to reeotd the set system
pressure.
9 Isolate and remove filling loop connection to
system.
FILliNG THE SYSTEM