17
Installer Settings
Hot Water 
Setup
The TPOne-M can be used as a single channel 
programmable thermostat to control the 
temperature regulation of the heating system only 
or as a two channel programmable thermostat 
to control the heating and the time schedule of 
a domestic hot water circuit.  The domestic hot 
water selection will have been chosen in the  
startup wizard on initial installation.  Choose this 
setting after installation to switch the domestic 
hot water option on/o.
Default:  Set at startup
Note:  Settings in the menu which are required for 
domestic hot water are only accessable if the Hot 
Water Setup is switched on.  TPOne-M controls 
only the time schedule for domestic hot water and 
should always be used with a suitable hot water 
cylinder thermostat.
Control Type This allows the thermostat to be set to run in On/
O mode or in chrono-proportional 3, 6 or 12 
cycle rate.
Default:  Chrono 6
Note: for condensing boiler control tests have 
shown that boiler efficiency is significantly 
improved when controlled by a chrono-
proportional type controller