3
PROG
NEXT
+
-
DAY
COPY
R/S
Heating System Performance.
The TP75H includes one in-built and two optional energy saving and
comfort enhancement features that may have been enabled by your
installer. All will affect the way in which the heating system operates,
and this will be different from that provided by conventional time
controls and room thermostats.
The in-built feature is an intelligent electronic anticipator which measures
the rate of temperature rise then switches the heat emitters off before
the set temperature is reached. However the required comfort
temperature will be reached due to the residual heat in the heat
emitters after they have been switched off. This feature is only
activated when the room temperature is 2°C or more lower than the set
temperature.
If the optional Optimum Start Control feature has been enabled,
(indicated by the display showing typically 0:30 and OP after the
second press of the PROG button from the RUN mode), then the heat
emitters will be switched on some time before the programmed event
1 time to provide the event 1 comfort temperature by that time.
If the optional Chrono-proportional feature has been enabled, then the
heat emitters will be switched on at regular intervals to prevent the
large swings in room temperature caused by heat emitters alternating
between very hot and cold. In mild weather and when the system is up
to temperature the heat emitters wiil be switched on regularly but for
only short periods. This is not a fault, and will provide increased
comfort.
RUN MODE
Whilst the TP75H is in RUN mode, i.e. controlling the space temperature
in accordance with the programme, the colon between the hours and
minutes digits blinks. The colon does not blink whilst the time and
programme are being set.
How to:
Select a 12 hour or a 24 hour clock display.
Select a °C or a °F temperature display.
Change between Winter Time and Summer Time at the
press of a button.
Convert the TP75H to act as a thermostat, controlling at the
selected temperature continuously.
Use the TP75H as a frost thermostat.
Use the holiday function.
Override the programmed temperature.
Extend an existing temperature for 1, 2 or 3 hours.
SELECTING THE CLOCK TYPE
(12hr or 24hr)
The factory pre-set clock has a 24 hour display. If a 12 hour display
with AM/PM indication is preferred then press and hold down the NEXT
and DAY buttons until the display changes. Repeat to return to a 24
hour display.
SELECTING THE TEMPERATURE
DISPLAY (°C or °F)
The factory pre-set temperature display is °C. If a °F display is
preferred then press and hold down the DAY and COPY buttons until
the display changes. Repeat to return to a °C display.
+ 1 HR
+ 2 HR
+ 3 HR
+ 1 HR
+ 2 HR
+ 3 HR
Fig. 3. Temperature range
changed to Fahrenheit.
Fig. 2. Clock set to 12 hour
display.
+ 1 HR
+ 2 HR
+ 3 HR
Fig. 1. Display following a
RESET.
(Colon blinking)
DISPLAY ELEMENTS
(Those that will appear whilst following these user's instructions).
Temperature
override
indicators
Indicates
temperature
display
Extended
temperature
indicators
+ 1 HR
+ 2 HR
+ 3 HR
Programmed temperature
indicator
Boiler ON
indicator
Holiday mode
selected
Programme
type indicator
Clock time, digital
thermometer, or number
of holiday days
Day of week
USER'S GUIDE
Electronic Programmable Room Thermostats
TP75H with integral sensor, for high current applications
TP75HA with remote sensor, for high current applications
