Worcester GREENSTAR 12Ri Instruction Manual page 39

R
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR Ri
8 716 115 168a (06/2008)
Small
tab
S
P
I M P ORTANT: I F TH E
BETWEEN THE AIR/GAS MANIFOLD
AN D TH E H EAT E XCHANG E R I S
DISTURBED THE SEALING GASKET
MUST BE REPLACED.
INSPECTION AND SERVICE
8 8 Remove burner (M).
Remove top baffle (N).
Remove lower baffle (O).
Remove the two hexagon headed screws (P)
retaining the access cover (Q) on the sump.
Access the heat exchanger flue ways by
inserting the cleaning brush (7 716 192 312)
through the top access hole in the casing (R).
Clean heat exchanger flue ways (S) using the
cleaning brush (7 716 192 312) removing
any debris from the access point in the sump.
M
N
O
Clean around sealing surface on sump and
replace access cover (Q). Using a suitable
container to collect water from syphon
connection at the base of the boiler flush
heat exchanger with water.
Re-assemble ensuring that the lower baffle
(O) and the top baffle (N) are refitted
correctly.
When re-fitting the burner ensure that it
fits centrally within the heat exchanger
and location tabs are situated in location
holes.
Ensure seal is replaced with new seal
and is correctly fitted.
Check the syphon unit for blockage
before refitting to boiler.
Reassemble and check combustion
as stated in "Setting the air/gas
ratio".
NOTE: To show the heat exchanger more
Q
clearly it has been shown external
to the appliance.
THE BAFFLES (O) AND (N) MUST
B E R E F IT TE D I NTO TH E H E AT
E XCHANG E R AS S HOW N I N 8.
FAILURE TO DO SO MAY RESULT
JOI NT
IN DAMAGE TO THE BOILER
INSPECTION AND SERVICE
37