Worcester GREENSTAR 25CDi GC Instruction Manual page 40

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INSPECTION AND SERVICE
Setting Boiler to Maximum.
NOTE: When running in the heating boost
mode, the boiler will operate both the Central
Heating and DHW circuits. This is to allow suf­
ficient time for setting procedure.
It will be necessary to run water through the
DHW circuit to ensure that the boiler will not
cycle on low heating demands.
A - On/off button
B - On/off and fault indicator (BLUE)
C - Central heating temperature control
D - Burner indicator (GREEN)
E - Reset button
F - Service button
G - DHW temperature control
H - ECO button
System pressure gauge
Cover or optional programmer
K - Display
L - Central heating boost button
M - Holiday button
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Press and HOLD central heating boost
button (L) for 10 seconds and set Central
Heating temperature to maximum.
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• The central heating boost button will illumi­
nate continually.
• The boiler will stay in this mode for 15
minutes unless the central heating boost
button is pressed again.
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Pull the cover off and connect a manome­
ter to the fan pressure test point.
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After measurement replace test point
cover.
Pressure will read negative and
be
greater than:
25CDi - 2.8 mbar
30CDi - 3.9 mbar
37CDi - 3.9 moor
42CDi - 4.B mbar
• Pressures measured below these figures
will indicate that the heat exchanger will
require cleaning.
• There is a special accessory kit available
specifically designed for cleaning the heat
exchanger. If required order 7 719 001 996.
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDil3OCDi/37CDV42 COl
tAORCESTER
INSPECTION AND SERVICE
67'20 613 700.
(2006/1 1)