
Supplied By www.heating spares.co Tel. 0161 620 6677
COMBUSTION CHAMBER &
HEAT EXCHANGER
6.5
Inspect the inside of the combustion chamber for debris. If necessary,
clean the inside of the tubes with a soft brush. Do not brush the
insulation at the rear, check the integrity of the combustion chamber
insulation panels, if damaged they will require replacement.
DOMESTIC COLD WATER INLET
FILTER (CBX APPLIANCES ONLY)
6.7
Close the water inlet isolating cock, open a domestic hot water tap at
the lowest point in the system and allow the pressure to dissipate. Close
this tap again. Undo the nut holding DHW turbine to the water inlet
isolating cock. The filter inside the isolating cock can now be carefully
removed, and cleaned as necessary by flushing with water. Re-assemble
in reverse order, ensuring all seals are replaced correctly. Refer to
Figure 28.
CONDENSATE DRAIN
6.6
The condensate Drain has a removable cap, Figure 27, 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.
26A SPARK ELECTRODE
25
GAS CONTROL VALVE, FAN & BURNER ASSEMBLY
6mm
TO BURNER
26
6mm ±0.5
INSULATION
BURNER
COMBUSTION CHAMBER
FRONT COVER
FAN
GAS VALVE
INLET PRESSURE
TEST POINT
GAS VALVE
FEED PIPE
4mm ±0.5
27
751030 MANUAL (NEW) 21/9/10 08:43 Page 39