Potterton SIRIUS THREE FS 130 Installation, User And Service Manual page 58

7 Installation
Fig.66
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Fig.67
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Fig.68
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SIRIUS THREE FS 130 and SIRIUS THREE FS 150
1. Remove the anti-dust plug located on heating return.
2. Connect the pipe to the heating return.
3. Remove the anti-dust plug on the heating flow.
4. Mount the filling and drain valves to the boiler's inlet and outlet (valves
not provided).
Important
To facilitate maintenance work, we recommend mounting a stop
valve on the heating flow and return pipes.
Caution
Position the safety valve between the boiler and the stop valve.
5. Fit the circulating pump on the heating return pipe (circulating pump
not provided).
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