Worcester 29CDi GC 47-406-34 User Manual

SERVICING AND SPARES
6 720 803 599 (2012/06) 37
6.1.3 TO CLEAN THE HEAT EXCHANGER
B Remove outer case and base panel and isolate the appliance from
power.
1. Remove cleaning access cover (B), seal (C) and metal plate (D)
securing it, if present.
Fig. 50 Cleaning heat exchanger
2. Loosen any deposits in the heat exchanger from top to bottom using
the cleaning blade.
3. Clean the heat exchanger from top to bottom using the brush.
B Refit the clean out cover plates in reverse order using a new seal (C)
and tighten screws.
6.1.4 TO CLEAN THE BURNER
1. Remove cover panel (A) by removing the screws (B).
B Check that the boiler is completely isolated from the gas supply.
2. Remove the clips (C) and unscrew the two bolts (D).
B Unscrew and remove the two hexagon screws (E) securing the fan.
B Slacken fully the rear securing bolt (F).
B Remove the burner cover plate (G).
NOTICE: Air/Gas ratio
B After servicing the CO/CO
2
must be checked using
the procedure in the section “Setting the air/gas ratio”
on page 38.
B The setting of the air/gas ratio must be carried out by
a competent person.
Setting the air/gas ratio must not be attempted unless
the person carrying out the operation is equipped
with a combustion analyser conforming to BS 7927
and is competent in its use.
B
C
D
1.
6720803599-02.1Wo
2.
6720803599-03.1Wo
3.
6720803599-04.1Wo
AB
6720647361-63.1Wo
B
1.
F
C
D
2.
6720647361-64.1Wo

Worcester 29CDi GC 47-406-34 Specifications

General

Model	29CDi
Category	Boiler
GC Number	47-406-34
Fuel Type	Natural Gas
Domestic Hot Water Output	29 kW
Efficiency Rating	A
Efficiency	89.2%
Central Heating Flow Temperature Range	30 - 80 °C
Dimensions	760 x 440 x 360 mm
Domestic Hot Water Flow Rate	12.3 litres/min