Horstmann C-Stat ZW Installation Guide download pdf (Page 7)

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 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

To adjust this setting go to the SET UP MENU and select TPI

CYCLES

1 2 3 4 5 6 7 8 9 10 11 12 ... 15 16

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Horstmann C-Stat ZW Installation Guide Page 7