
APPL
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INSTALLATION & SERVICING INSTRUCTIONS
5
LAYOUT & COMPONENTS
LAYOUT & COMPONENTS
6-720-611-730b (12.05)
The diagram opposite shows the controls in the
servicing position and excludes the outer case,
inner covers and wiring.
1 CONTROLS SUPPORT FRAME
2 BOILER ON/OFF SWITCH
3 DHW TEMPERATURE CONTROL
4 CH TEMPERATURE CONTROL
5 BOSCH HEATRONIC SERIES CONTROL
BOARD
6 TANK TEMPERATURE SENSOR
7 TANK OVERHEAT THERMOSTAT
8 PRESSURE GAUGE
9 EXPANSION VESSEL
10 FILLING LOOP ISOLATION VALVE
11 WATER FLOW SENSOR TURBINE
12 DHW HEAT EXCHANGER
13 FILLING LOOP FLEXIBLE PIPE
14 BOILER/TANK DRAIN & CONNECTION
POINT FOR FILLING LOOP
15 DHW FLOW SENSOR
16 MOUNTING FRAME
17 CH FLOW ISOLATION VALVE
18 DHW OUTLET
19 GAS ISOLATION VALVE
20 MAINS WATER INLET ISOLATION VALVE
21 CH RETURN ISOLATION VALVE
22 RUNNER WHEEL
23 CONDENSATE PUMP ASSEMBLY
24 CIRCULATING PUMP
25 DIVERTER VALVE
26 GAS VALVE
27 CONDENSATE TRAP
28 AIR/GAS ADJUSTMENT SCREW (SEALED)
29 HEAT EXCHANGER
30 RETAINING CLIP FOR EXPANSION TANK
31 GAS BURNER
32 COMBUSTION AIR FAN
33 FLUE BLANKING PLATE
34 CASING SUPPORT STRUT
35 FLUE GAS SAMPLING POINT
36 PRESSURE RELIEF VALVE
37 CASE 'KNOCK-OUT' PANEL - FLUE
38 AUTO-AIR VENT
39 DHW WATER STORAGE TANK
40 DATA LABEL
100mmØ HORIZONTAL CONDENSEFIT
HIGHFLOW FLUE COMPONENTS
(Kit Part No.
7 719 002 434)
A - 93° ELBOW
B - ELBOW EXTENSION
C - LOCKRING
D - RETAINING RING
E - INNER WALL FLUE COLLAR
F - TERMINAL ASSEMBLY
G -OUTER WALL FLUE COLLAR
OPTIONAL ACCESSORIES (not supplied)
a - TR212E NIGHT SETBACK MODULE
Part No. 7 744 901 136
b - TWIN CHANNEL DIGITAL TIMER
Part No. 7 716 192 032
c - TR2 ROOM TEMPERATURE CONTROLLER
Part No. 7 744 901 137
d - FILLING LINK WITH PRESSURE GAUGE
Part No. 8-718-505-047
FLUE KITS:
Vertical 100mmØ Part No. 7 719 002 435
Vertical 125mmØ Part No. 7 719 002 437
Horizontal 125mmØ Part No. 7 719 002 436
NG to LPG CONVERSION KIT
Part No. 7 716 192 294
A
B
C
D
E
C
F
G
1
37
b
a
c
34
32
33
35
23
24
26
28
30
31
25
27
29
22
21
3
7
8
11
10
12
15
9
6
2
13
14
16
17
18
19
20
4
1
d
38
39
36
5
40