APPL
IA
N
C
E
IN
FOR
M
AT
ION
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
5
LAYOUT & COMPONENTS
LAYOUT & COMPONENTS
8-716-106-252a (03.05)
The diagram opposite excludes the top,front and
RH side casing panels.
1 CONTROL BOX ASSEMBLY
2 CASING SIDE PANEL
3 DIVERTER VALVE
4 FLUE 'KNOCK-OUT' SECTION
5AUTO AIR VENT
6 CH CONTROL & MANUAL RESET HIGH
LIMIT THERMOSTATS
7 CIRCULATING PUMP
8 OVERHEAT THERMOSTAT (AUTOMATIC
RESET)
9 PRESSURE RELIEF VALVE
10 EXPANSION VESSEL
11 DHW HEAT EXCHANGER
12 CASING SUPPORT PANEL
13 MANUAL RESET FLUE OVERHEAT
THERMOSTAT
14 FLUE MANIFOLD ACCESS COVER
15FLUE GAS SAMPLING POINT
16 CLIP FOR FIRE VALVE SENSOR
17 CLIP FOR POWER CABLE
18 AIR INLET PIPE & CASING
19 SECONDARY HEAT EXCHANGER MANUAL
AIR VENT
20 SECONDARY HEAT EXCHANGER DRAIN
21 CONDENSATE OUTLET PIPE
22 SECONDARY HEAT EXCHANGER
23 PRIMARY HEAT EXCHANGER
24 TRAY
25COMBUSTION CHAMBER ACCESS DOOR
26 DATA LABEL
27 HEATSLAVE TANK DRAIN COCK
28 HEATSLAVE TANK
29 PRESSURE GAUGE
30 QUICK REFERENCE GUIDE SLOT
31 LOCK-OUT INDICATOR
32 POWER ON INDICATOR
33 OVERHEAT RESET BUTTONS (water
temperature & flue temperature)
34 LOCK-OUT RESET BUTTON
35CH TEMPERATURE CONTROL
36 DHW TEMPERATURE CONTROL
37 BENTONE STERLING 50 BURNER
i) Control box
ii) Motor
iii) Air intake casing
iv) Oil pump
v) Combustion head
38 CLIP - AIR INTAKE HOSE
39 AIR INTAKE HOSE
OPTIONAL ACCESSORIES (not supplied)
a - 7 day TWIN CHANNEL DIGITAL TIMER
Part No. 7 716 192 033 0
15
3
5
6
7
8
9
2
4
10
11
12
13
16
34
33
32
31
36
23
29
21
22
35
30
14
i)
38
37
ii)
iii)
iv)
v)
a
1
39
17 18
19 20
24
25
26
27
28
