APPL
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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
5
LAYOUT & COMPONENTS
LAYOUT & COMPONENTS
8-716-106-256a (08.05)
The diagram opposite excludes the top,front and
RH side casing panels.
1 CONTROL BOX ASSEMBLY
2 CASING SIDE PANEL
3 FLUE 'KNOCK-OUT' PANEL
4 CLIP - POWER CABLE
5CLIP - FIRE SENSOR
6 CASING SUPPORT PANEL
7 CONTROL & MANUAL RESET HIGH LIMIT
THERMOSTATS
8 OVERHEAT THERMOSTAT (AUTOMATIC
RESET)
9 TRAY
10 SECONDARY HEAT EXCHANGER
11 MANUAL RESET FLUE OVERHEAT
THERMOSTAT
12 FLUE GAS SAMPLING POINT
13 FLUE MANIFOLD ACCESS COVER
14 AIR INLET CASING
15MANUAL AIR VENT - SECONDARY HEAT
EXCHANGER
16 HEAT EXCHANGER FLOW PIPE
17 DRAIN - SECONDARY HEAT EXCHANGER
18 REAR CABINET SUPPORT BRACKET
19 CONDENSATE OUTLET
20 FUEL ISOLATING VALVE
21 PRIMARY HEAT EXCHANGER
22 BASE PLATE
23 COMBUSTION CHAMBER ACCESS DOOR
24 OVERHEAT RESET BUTTON
25FLUE OVERHEAT RESET BUTTON
26 DATA LABEL
27 TEMPERATURE CONTROL
28 TOP FRONT PANEL
29 STERLING 50 BURNER
i) Control box
ii) Motor
iii) Air intake casing
iv) Oil pump
v) Combustion head
30 LOCK-OUT INDICATOR/RESET BUTTON
31 CLIP - AIR INTAKE HOSE
32 AIR INTAKE HOSE
3
5 6
7
2
4
13
23
24
14
25
26
28
29
15
30
22
31
12
i)
1
32
ii)
iii)
iv)
v)
27
8 9
10
11
16
17
18
19
20
21
