![Potterton NXR4i Installation And Service Manual Download Page 18](http://html.mh-extra.com/html/potterton/nxr4i/nxr4i_installation-and-service-manual_1583063018.webp)
18
NXR4i
09/06/2011 - 300025088-001-B
5.
Commissioning
5 Commissioning
Z
See:
- Control panel instructions
- Burner instructions
- Domestic hot water calorifier instructions
6 Switching off the boiler
`
Set the On/Off switch to
O
.
Z
See: Control panel instructions
`
Cut the gas supply to the boiler (if present).
6.1 Precautions required in the case of long boiler stops (one or more years)
- The boiler and the chimney must be swept carefully.
- Close all the doors of the boiler to prevent air from circulating inside
the boiler.
- We advise removing the pipe which connects the boiler to the
chimney and to close off the nozzle with a cover.
6.2 Precautions required if the heating is stopped when there is a risk of freezing
We recommend the use of a correctly dosed antifreeze agent to
prevent to the heating circuit from freezing.
If this cannot be done, drain the system completely.