Layout & Components - Worcester 440CDi Instruction Manual

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INSTALLATION & SERVICING INSTRUCTIONS
8 716 115 219b (09.2008)
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LAYOUT & COMPONENTS
The diagram opposite shows the controls in
the servicing position and excludes the outer
case, inner covers and wiring.
1 CONTROL PANEL
2 MASTER SWITCH FOR ON/OFF
F
3 BURNER ON INDICATOR LIGHT (GREEN)
4 SERVICE BUTTON
5 CENTRAL HEATING BOOST BUTTON
6 DISPLAY
7 RESET BUTTON
8 ECO BUTTON
9 NOT USED
10 CH TEMPERATURE CONTROL
11 MAINS ON/OFF INDICATOR & FAULT
DIAGNOSTIC LIGHT
12 DHW TEMPERATURE CONTROL
13 SYSTEM PRESSURE GAUGE
14 POSITION FOR OPTIONAL PROGRAMMER
15 TANK TEMPERATURE SENSOR
16 TANK OVERHEAT THERMOSTAT
17 DHW HEAT EXCHANGER
18 FILLING LOOP ISOLATION VALVE
19 WATER FLOW SENSOR TURBINE
20 BOILER/TANK DRAIN & CONNECTION
POINT FOR FILLING LOOP
21 DHW FLOW SENSOR
22 CH FLOW ISOLATION VALVE
23 DHW OUTLET
24 GAS ISOLATION VALVE
25 MAINS WATER INLET ISOLATION VALVE
26 CH RETURN ISOLATION VALVE
27 RUNNER WHEEL ON MOUNTING FRAME
28 OPTIONAL FILLING LINK WITH PRESSURE
GAUGE: PART NO: 7 716 192 599
29 CIRCULATING PUMP
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30 CONDENSATE PUMP ASSEMBLY
31 GAS VALVE
32 EXPANSION VESSEL
33 AIR/GAS ADJUSTMENT SCREW (SEALED)
34 HEAT CELL
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36 GAS BURNER/SPARK ELECTRODES
37 COMBUSTION AIR MODULATING FAN
38 FLUE BLANKING PLATES
36 39 CASING SUPPORT STRUT
40 CASE 'KNOCK-OUT' PANEL-FLUE
41 AUTO AIR VENT
42 SYSTEM PRESSURE RELIEF VALVE
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43 HEAT STORE
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100mmØ HORIZONTAL FLUE
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COMPONENTS (Kit Part No. 7 716 191 155)
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A - 93° ELBOW
B - ADAPTOR
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C - CONNECTOR
D - INNER WALL FLUE COLLAR
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E - TELESCOPIC TERMINAL ASSEMBLY
F - OUTER WALL FLUE COLLAR
FLUE KITS:
Vertical 100mmØ Part No. 7 716 191 156
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Vertical 125mmØ Part No. 7 716 191 158
Horizontal 125mmØ Part No. 7 716 191 157
LAYOUT & COMPONENTS
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