How can I vary the output voltage?
The VPhase Voltage Optimisation device is designed to optimise to a set level. It is the only domestic Voltage Optimisation device currently available that can do this. By default, the unit will optimise to 220 volts, although the unit has been designed to allow this output voltage to be changed (at the point of installation), through the use of PCB jumper pins. The jumpers can be bought from most electrical wholesalers, or online through the links below.
VPhase has put together an information sheet about varying the output voltage, which is available to download from the Info & Downloads section HERE . The jumper setting enables installers to vary the output voltage in 5 volt increments from 210 volts to 230 volts.
Farnell: http://uk.farnell.com/fci/68786-202/jumper-2-pin-pcb/dp/1654800
RS Components: http://uk.rs-online.com/web/p/jumpers-shunts/7457080/
Maplin: http://www.maplin.co.uk/jumper-pins-98861