Fan Pressure Test; To Clean The Heat Exchanger - Worcester GREENSTAR 30CDi Installation, Commissioning And Servicing Instructions

SERVICING AND SPARES

6.1.1 FAN PRESSURE TEST

This test is to determine if the heat cell requires cleaning/
attention
SET THE BOILER TO MAXIMUM
The boiler must operate at maximum output for the Fan
Pressure test and Flue Gas Analysis.
10
9
8
7
3 4
5
2
6
1 6
max
Fig. 50 Control panel
[1] Display
[2] Reset button
[3] Not used
[4] Not used
[5] ON/OFF and fault indicator (Blue)
[6] Central heating temperature control
[7] Performance test button
[8] Service button
[9] Burner indicator (Green)
[10] ON/OFF button
▶ Press and HOLD performance test button (7) for 10 seconds and set
Central Heating temperature to maximum.
– The performance test button will illuminate continually.
– The boiler will stay in this mode for 15 minutes unless the
performance test button is pressed again.
▶ Pull the cover off and connect a manometer to the fan pressure test
point.
▶ After measurement replace test point cover.
Fig. 51 Fan pressure test point
• Pressure readings in the black area will indicate that the heat
exchanger requires attention/cleaning.
• There is a special accessory kit available specifically designed for
cleaning the heat exchanger. Part number 7 719 001 996.
32
1
2
reset
3
eco
4
5
2.
FAN PRESSURE TEST
Clean the Heat Ex.
NG Boilers
40 CDi:
30 CDi:
0 -1 -2 -3
LPG Boilers
40 CDi:
30 CDi:
0 -1 -2 -3
Fig. 52 Fan pressure readings

6.1.2 TO CLEAN THE HEAT EXCHANGER

▶ Remove outer case and base panel and isolate the appliance from
power.
1. Remove the cleaning access cover (B), seal (C) and metal plate (D)
securing it, if present.
1.
B
Fig. 53 Cleaning the heat exchanger
2. Loosen any deposits in the heat exchanger from top to bottom using
the cleaning blade.
2.
Heat Ex. ok
- 5.2
- 4.1
-4 -5 -6 -7 -8
mbar
- 5.2
- 4.1
-4 -5 -6 -7 -8
mbar
D
C
6720803599-02.1Wo
6720803599-03.1Wo
6 720 806 548 (2013/02)