Bosch 12/18 User Manual

Page of 52
COMBUSTION CHAMBER
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07) 
22
IN
ST
AL
LA
TI
O
N
Combustion chamber:
1
 Release retaining nuts and washers (B).
 Remove combustion chamber access  
door (A).
2
 Ensure the baffles (C) and baffle retainer 
(D) are correctly fitted for the boiler output
as shown in the plan views opposite.
3
 Refit combustion chamber door (A).
 Secure with nuts and washers (B) and 
tighten until the door is firmly secured, do
not over tighten the nuts.
4
 Unscrew screws (E) and remove flue  
manifold access cover (F).
5
 Check that all the baffles (G) and baffle
retainer (H) or ( J ) are correctly fitted to the 
secondary heat exchanger. 
COMBUSTION CHAMBER
H
F
2
E
4
G
5
A
B
1
3
D
C
12/18 & 18/25kW
Plan sectional view
D
C
25/32kW
Plan sectional view
J
Hook the 
retainer ( J )
over the
end two
baffles
or
FRONT                             FRONT