8
DIL switch settings
On the rear of the unit in the center there are DIL switches that control
TPI and installation mode as described below
TPI temperature control software
Thermostats, using TPI (Time Proportional Integral) control algorithms,
will reduce the temperature swing that normally occurs when using
traditional bellows or thermally operated thermostats. As a
consequence, a TPI regulating thermostat will maintain the comfort
level far more efficiently than any traditional thermostat.
When used with a condensing boiler, the TPI thermostat will help to
save energy as the control algorithm allows the boiler to operate in
condensing mode more consistently compared to older types of
thermostat.
Ÿ
DIL switch numbers 2 and 3 should be set as
diagram opposite.
Ÿ
For Gas boilers set the TPI setting to 6 cycles per
hour. (Default setting)
Ÿ
For Oil boilers set the TPI setting to 3 cycles per
hour.
Ÿ
For Electric heating set the TPI setting to 12 cycles
per hour.
Switch positions for
different TPI settings.
Installation Mode
Set DIL switch 1 to 'ON' to enter installation mode
To exit installation mode change DIL switch 1 to 'OFF'
INSTALLER INSTRUCTIONS