Worcester 29CDi GC 47-406-34 Installation, Commissioning And Servicing Instructions page 7

The diagram opposite shows the controls in the servicing position
and excludes the outer case
1 FLAME VIEWING WINDOW
2 IGNITION ELECTRODES AND FLAME SENSE ELECTRODE
3 HEAT EXCHANGER
4 OVERHEAT THERMOSTAT
5 ACCESS POINT FOR CLEANING HEAT EXCHANGER
6 PLATE TO PLATE DHW HEAT EXCHANGER
7 MODULATING PUMP
8 PRESSURE RELIEF VALVE
9 DRAIN POINT
10 DCW MAINS ISOLATING VALVE
11 CH RETURN ISOLATING VALVE
12 CHARGING LINK ASSEMBLY
13 COVER FOR EXTERNAL WIRING CONNECTIONS
14 CONTROL PANEL IN SERVICE POSITION
15 SYSTEM PRESSURE GAUGE
16 GAS ISOLATING VALVE
17 DHW OUTLET CONNECTION
18 CH FLOW ISOLATING VALVE
19 CONDENSATE DRAIN CONNECTION
20 CONDENSATE SIPHON
21 INLET PRESSURE TEST POINT
22 GAS VALVE
23 DHW TEMPERATURE SENSOR (NTC)
24 AIR / GAS - ADJUST MAXIMUM SETTING SCREW
25 FAN PRESSURE TEST POINT
26 FAN
27 PRIMARY SENSOR
28 EXPANSION VESSEL
29 REMOVABLE TOP CASE PANEL FOR SERVICING
Table 3 Main boiler components
42
35
36
38
37
Fig. 4 Hydraulics
6 720 803 599 (2012/06)
6
31
33
34
32
41
9 6720647361-04.2Wo
40
39
49
48
47
46
2
1
43
44
Fig. 5 Control panel
30 FLOW TURBINE
31 UNUSED PORT
32 RETURN CONNECTION TO BOILER HEAT EXCHANGER
33 AUTO AIR VENT
34 EXPANSION VESSEL CONNECTION
35 FLOW CONNECTION FROM BOILER HEAT EXCHANGER
36 DHW SENSOR
37 CH FLOW CONNECTION TO PRE-PLUMBING MANIFOLD
38 DHW OUT CONNECTION TO PRE-PLUMBING MANIFOLD
39 DCW IN CONNECTION FROM PRE-PLUMBING MANIFOLD
40 CH RETURN CONNECTION FROM PRE-PLUMBING MANIFOLD
41 DIVERTER VALVE
42 COMPACT HYDRAULIC MOUNTING SCREW (2) TO BOILER
43 CH TEMPERATURE CONTROL
44 MAINS ON/OFF INDICATOR/DIAGNOSTIC LIGHT (BLUE)
45 DHW TEMPERATURE CONTROL
46 PERFORMANCE TEST BUTTON
47 SERVICE BUTTON
48 BURNER ON INDICATOR LIGHT (GREEN)
49 MASTER SWITCH ON/OFF
50 HOLIDAY BUTTON
51 ECO BUTTON
52 FAULT RESET BUTTON
30 53 DISPLAY
54 POSITION FOR OPTIONAL PLUG-IN CONTROL
Table 4 Hydraulics and control panel
7
42
8
APPLIANCE INFORMATION
54
reset
eco
3 4 3 4
5 e
2
6 1 6
max min max
53
15
2
1 1 3
0 4 52
bar
51
50
45
6720647361-56.2Wo
7