Sime Format B, Installation And Servicing Instructions

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To ensure continued efficient operation of the appliance, it is
recommended that it is checked and serviced as necessary
at regular intervals. The frequency of servicing will depend
upon the particular installation conditions and usage but in
general once a year should be adequate.
It is the law that any service work must be carried out by
registered personnel (C.O.R.G.I.). Before commencing any
service operation, ISOLATE the mains electrical supply, and
TURN OFF the gas supply at the main service cock. Service
the appliance by following the full procedure detailed below.
5.1 MAIN BURNER ASSEMBLY
– Remove the casing as showed in fig. 23.
– Remove the 8 fixing screws securing the sealed chamber
front panel then remove the panel.
– Unscrew the 7 screws securing the combustion chamber
front panel and remove the panel, taking care not to
damage the insulation.
– Remove the electrode by unscrewing it from the burner
manifold.
– Unscrew the burner manifold union and locking nut. Lift
the front of the burner to disengage manifold thread and
then lift the burner clear.
– Remove the burner manifold by disconnecting the four
screws.
– Inspect and if necessary, clean the injectors, electrodes,
and the main burner bars.
5.2 FAN ASSEMBLY
– Disconnect the electrical connections to the fan. Note the
position of the earth conductor.
– Remove the three screws securing the fan.
– Tilt the fan forwards and remove in a downwards direction.
– Inspect the fan assembly and clean if necessary.
5.3 BITHERMAL EXCHANGER
– Inspect the bithermal exchanger, and clean if necessary.
5.5 CHIMNEY SWEEP FUNCTION
(combustion analysis)
To carry out the verification of combustion in the boiler turn
the selector and stop on the position ( ) until the
green/orange led starts to flash intermittently.
From that moment the boiler will start functioning in heating
mode at the maximum power, with switching off at 80°C and
restarting at 70°C.
Before activating the chimney sweep function make sure
that the radiator valves or eventual zone valves are open.
The test may be carried out also during D.H.W. mode.
To do so it is enough, after having activated the chimney
sweep function, to take some hot water from one or more
outlets.
Even in this condition the boiler functions at the maximum
temperature always with the primary controlled between
80°C and 70°C. During the entire duration of the testing the
hot water taps must remain open.
After verifying the combustion the boiler should be switched
off by placing the selector on the
OFF position; then return the
selector to the desired function.
5 ROUTINE SERVICING INSTRUCTIONS
8 SEALED CHAMBER SCREWS
3 FAN FIXING SCREWS
MAIN EXCHANGER
7 COMBUSTION CHAMBER
FRONT PANEL SCREWS
BURNER MANIFOLD UNION
Fig. 24
1
2
Fig. 23
SCREWS
25