Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual Front

Models: 25/32kW 12/18 18/25

1 52
Download 52 pages 48.17 Kb
Page 40
Image 40

E

F

J

H

K

Gor

J

H

G

A

B

SERVICING

& SPARES

Plan sectional view

Plan sectional view

12/18kW & 18/25kW

25/32kW

 

C

C

 

D

D

FRONT

FRONT

39

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:

Remove top cover by releasing the screws at each corner and lift free. 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 the flue system and clean if necessary. Remove the baffle retainer (J) and baffles (H) from the secondary heat exchanger.

Check and clean the secondary heat exchanger surfaces.

NOTE: Do not use wire brushes and cleaning agents to clean the stainless steel secondary heat exchanger components.

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.

Refit 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 access door (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 at least 1m away from the appliance with the fire valve sensor located within the appliance case. A fire valve sensor clip (K) is provided for this purpose.

INSPECTION AND SERVICE

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32 8 716 113 389b (09/07)

Page 40
Image 40
Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual Front