20
TPOne-S
Start-up 
Method
This feature allows the thermostat to start up the 
heating system in three different ways. 
Normal  -  Heating is turned up or down at the 
programmed times.
Delayed start (or Economy Setting)  - 
Set the period start times in the normal way 
taking into account the time that the building 
takes to heat on an average day. The thermostat 
monitors switch on time, actual temperature and 
wanted temperature and delays the start of the 
heating if the actual temperature is close to the 
programmed temperature. Delayed Start in TPOne 
is dynamic and will adjust automatically to the 
home heating characteristics while maximising 
energy savings.
Optimised Start (or Comfort Setting)  -  
This allows you to programme the time at 
which you would like to be up to the required 
temperature. The thermostat then calculates 
how soon before the required time the heating is 
turned up.  Optimised Start in TPOne is dynamic 
and will adjust automatically to the home heating 
characteristics to reach required temperature at 
the required time.
Default:  Normal
Temperature 
Limits
This allows the upper and lower temperature of 
the thermostat setting range to be limited.
Defaults: 
Minimum 5°C,  
Maximum 35°C
Frost Protect To help protect against damage to the heating 
system caused by extreme low temperatures the 
TPOne includes a Frost Protect level.  This is the 
minimum temperature level and is also used when 
the TPOne is placed in standby mode.
Default:  5°C
Temperature 
Override
This establishes the degree of manual temperature 
override available to the user, No Limit, Limited +/-
2°C or No Override
Default:  No Limit
Installer Settings (Continued)