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STARTING THE APPLIANCE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07)
31
COMMISSIONING
F
H
G
Return
Flow
TAN K
A
B
C
A
B
C
A - Bleed & pressure gauge port
B - Pressure adjustment
C - Vacuum gauge port
D - Retaining screws - cover
D
D
DANFOSS
BFP 11 L3 OIL PUMP
SUNTEC
AS47C OIL PUMP
BURNER LOCKOUT
C
B
A
D
RIELLO
RDB OIL PUMP
BURNER LOCKOUT RESET
BUTTON (D) FOR
25/32 MODEL
GREENSTAR HEATSLAVE EXTERNAL
max
flue
reset
boiler
reset
max
lockout
on
service
1
BURNER LOCKOUT RESET
BUTTON (D) FOR 12/18
& 18/25 MODELS
(Under control box)
(On top of burner control box)
E - Lockout indicator
STARTING THE APPLIANCE
IMPORTANT: Never run the appliance when
the appliance/system is unpressurised
(sealed systems) or empty.
1Check the oil supply is correctly fitted and
in good working order before turning on
the oil supply valves to the boiler.
Turn on the main oil supply valve at the tank
and draw off at least 2
1
/
2
litres of oil until a
steady flow of clear uncontaminated oil can
be seen as follows:
• The oil supply to the boiler should be
primed before the burner is operated to
avoid unnecessary pump wear.
• The use of an oil suction pump will prime
and flush through any oil supply set up
simply and easily, alternatively the
following procedures can be used.
Single pipe gravity feed systems:
Disconnect the flexible oil hose and open
the isolating valve to discharge the oil into a
suitable container.
If a top entry tank has been used the
pipework will need to be primed before the
oil will discharge under gravity.
When completed, close the isolating valve,
reconnect the flexible oil hose.
Double pipe sub-gravity feed systems
and single pipe suction lift with de-aerator:
To prime a de-aerator, disconnect the
flexible oil inlet hose (F) from the isolation valve
and place in a container of kerosene (G).
Connect a spare flexible oil hose (H), to
discharge into container (G). Open the
isolating valve, turn on the power to the boiler
and set the programmer to ON. Prime the
de-aerator until there is a steady flow of oil into
container (G). Turn off the boiler then
reconnect the flexible oil inlet hose (F).
Turn on the boiler, the oil level in the
de-aerator will drop as the oil is used until
the oil is drawn from the tank. If the
de-aerator empties and the burner locks out
before the oil is drawn from the tank, prime
the de-aerator again.
Open the isolating valve and the oil pump
bleed valve (A) to discharge into a suitable
container once the boiler is started up.
Switch on the electricity supply to the boiler.
Set the programmer to ON for CH and DHW.
Turn on the boiler CH control thermostat.
Allow the burner to run through to lockout
indicated by the illumination of the lockout
indicator (E).
Wait 2 minutes then press the lockout reset
button (D).
Repeat the procedure at least 3 times or until a
steady stream of oil, without air, runs from the
bleed port, then relock the bleed port (A).
Switch off the boiler.
Remove the oil pump filter, clean with
kerosene and refit.
The internal filter is accessed by removing
the oil pump cover on the Danfoss BFP 11
L3, Suntec AS47C and Riello RDB.
Safely dispose of the container/discharge.