Main Components; Main Boiler Components - Potterton SIRIUS THREE FS 70 Installation Manual

4.3

Main components

Fig.10 SIRIUS THREE FS 50 and SIRIUS THREE FS 70
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1 Control panel
2 Flue gas measuring point
3 Flue gas connection
4 Mounting point for a maximum of two AVS 75
modules. A third AVS 75 module can be used by the
boiler but must be fixed to the wall and powered
externally.
5 Power supply terminal block
6 Mounting point for communication module OCI 345
Caution
Danger of short circuit on the OCI 345
communication module if it is fixed in another
emplacement.
7 Controller PCB
8 Terminal block for the sensors and the remote
control
Fig.11 SIRIUS THREE FS 90 and SIRIUS THREE FS 110
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7609493 - v11 - 18052020
4.3.1
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5

Main boiler components

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9
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9 Gas valve
10 Burner
11 Safety thermostat on the combustion chamber door
12 Flue gas sensor
13 Flue gas fitting
14 Automatic air vent
15 Return temperature sensor
16 Flow temperature sensor
17 Safety thermostat
18 Condensate siphon
19 Drain valve
20 Hydraulic pressure sensor
21 Ignition transformer
22 Ignition electrode
23 Ionisation probe
24 Flame inspection window
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11
10
24
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4 Description of the product
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MW-1000013-7
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MW-1000014-7
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