9 VS20WRF and VS20BRF Installer Manual
System Overview - Hot Water Option
Unit configured to
Hot Water Timer.
When the unit is configured as a hot water timer (see page 32)
there are two methods of connecting the cylinder thermostat.
Cylinder thermostat options
1 Connected direct to WC (Default)
2 Connected direct to VS20RF (requires additional parameter change. See page 71)