22
d)
Undo the 4 scr
ews F holding the burner and remove.
e)
Inspect, and if necessar
y clean the main burner ports using a
soft brush or vacuum cleaner, ensuring that the flame ports are
not obstructed.
28
Note: Do not use a wir
e brush or any abrasive
material.
f)
Inspect the spark and detection electr
odes. Ensure they are
clean and in good condition; replace if necessary.
g)
Finally
, before replacing, check that the spark and detection
gaps are correct.
29
a)
After ser
vicing, check the gas rates against section 2.2 or
the data plate.
b)
If the gas rates ar
e incorrect ensure the inlet pressure, with
the appliance running, is correct.
c)
If the gas rates ar
e still incorrect contact: Technical Help line:
01926 834834.
6.4
GAS RATE CHECK
6.6
CONDENSATE DRAIN
a)
Place a sheet or newspaper beneath the heat exchanger and
remove all visible loose deposits from the heat exchanger fins,
using a soft brush or vacuum cleaner.
HEAT EXCHANGER
6.5
CLEANING THE PRIMARY
The condensate trap allows the discharge of the
condensate via the drain while avoiding the escape of
combustion products.
A plastic ball closes the trap should the trap be empty.
If the drain is blocked the condensate level rises, the
electrode contacts the water sending the boiler to
lockout on flame loss.
a)
The condensate drain has a r
emovable cap, Fig. 29, which
allows the removal of debris that may be caught within it. Place
a bowl under the cap to catch the condensate and remove the
cap. Any debris inside will be expelled at this point. Replace
the cap ensuring a good seal is made. Discard the condensate
and debris.
b)
Check the soundness and integrity of the condensate drain
pipe.
27
