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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
37
INSPECTION AND SERVICE
8-716-106-252a (03.05)
INSPECTION AND SERVICE
External oil filter:
Remove the paper element from the external oil
filter and replace it. If the filter contains a washable
element, thoroughly clean in kerosene and
reassemble into the filter.
Clean the boiler:
Manifold access:
Release screws (E) to remove the flue manifold
access cover (F) and clear any debris.
Check the condensate route (G) is clear and
clean the condensate trap and pipework.
Check and clean the flue system if necessary.
Remove the baffle retainer (J) and baffles (H)
from the secondary heat exchanger.
Check and clean the secondary heat exchanger
surfaces.
Pour 500ml of water into drain (G) to refill the
condensate trap.
Clean the secondary heat exchanger baffles
(H) if necessary and refit correctly.
Refit the baffle retainer (J).
Check the seal on the manifold access cover
(F) and replace if necessary.
Replace the flue manifold access cover (F)
and secure with screws (E).
Combustion chamber:
Release the M10 retaining nuts and washers
(B) and remove combustion chamber access
door (A).
Check the fibreglass rope seal on the
combustion chamber access door (A) and
replace if necessary.
Remove and check the baffle retainer (D).
Remove the baffles (C), clean and check the
condition of the baffles and the acoustic
insulation. Replace any baffles or insulation pads
considered to be badly corroded/degraded.
Thoroughly clean all of the heat exchanger
surfaces using a suitable brush and clear all
loose debris from the combustion chamber.
Check the condition of the combustion
chamber access door insulation. If the insulation
is damaged the door assembly must be replaced.
Refit the items in reverse order ensure the
baffles (C) and baffle retainers (D) are correctly
fitted for the boiler output as shown in the plan
view opposite.
Refit combustion chamber cover (A).
Secure with nuts and washers (B) and tighten
until the door is firmly secured, do not over
tighten the nuts.
Fire valve:
Check that the oil supply pipe has a fire valve
fitted externally to the building with a fire detection
element located within the appliance case. A
fire valve clip (K) is provided for this purpose.
A
B
D
C
K
E
F
H
G
J
Plan sectional view
18/25kW