Danfoss TP75H, TP75HA Setting Instructions Manual

1

Electronic Programmable Room Thermostats
TP75H with integral sensor, for high current applications

TP75HA with remote sensor, for high current applications

+1 HR
+2 HR
+3 HR

+1 HR
+2 HR
+3 HR

+1 HR
+2 HR
+3 HR

Control temp.

Event No.

Days

Time

+1 HR
+2 HR
+3 HR

5/2 day mode

Control temp.

Event No.

Time

Day

+1 HR
+2 HR
+3 HR

7 day mode

SETTING THE CLOCK

After the recessed R/S (reset) button
has been pressed the display appears
as shown, with the colon blinking, and
all the factory pre-set conditions will
be present.

To set the clock to the correct time,
press and release the button marked
PROG. The digits blink.

Press the DAY button (the digits stop
blinking) until the correct day number
is shown. (1 = Monday).

Press and release the + or - buttons to change the time by one
minute, or press and hold down to change the time in ten minute
steps.

When the time is correct press PROG to start the clock and continue
setting sequence.

SETTING THE OSC PERIOD (IF ENABLED)

This display will only appear if the
OSC function has been enabled.

Use the + or - button to select an OSC
period. The choices are 0:30 (30
minutes), 1:00 (one hour), 1:30, and
2:00.

The recommended initial setting is 0:30, for more details see the
post-commissioning notes in the Installation & Commissioning Guide.

If the OSC period is set to 0:00, the function is disabled.
When set as required press PROG to continue.

SETTING THE EVENT TIMES &
TEMPERATURES

The installer will have configured the
TP75H to run in 7 day mode or 5/2 day
mode by means of a switch on the
back of the unit.

The first event (time and temperature)
is displayed, together with the day (7
day mode) or days (5/2 day mode)
when it is active. Note that the day
number(s) displayed will reflect the
current day.

To step through the six available events
press and release the NEXT button.

Whilst each event is on display, it may
be altered as required.

SETTING INSTRUCTIONS

PROG

NEXT

+

-

DAY

COPY

R/S

..../continued

Press and hold down the + or - buttons to change the event time in
ten minute steps. Press and release to change by one minute.
Press and release the button to raise the control temperature by
0·5°C (1°F), or press and release the button to lower the control
temperature by 0·5°C. Press and hold down these buttons to make
larger changes to the control temperature.
In addition to being able to programme a temperature, it is also
possible to programme an OFF simply by pressing the ▼ button until
the symbol 'OF' appears on the display.
Caution: If Off is selected, frost protection is not provided.
When all events for the day(s) on display are as required press DAY
to show the following day's events.
The display will appear similar to one of the diagrams on the right,
depending on whether the TP75 has been set up for 7 day or 5/2 day
mode.
Use the +, -, , , NEXT buttons to
alter the events as required,
OR
If the previous day's programme is
to be repeated, press COPY to
repeat those events with just one
button press.
(Pressing COPY when in 5/2 day
mode will repeat the events
programmed for days 1 to 5 at the
weekend).
Use DAY and NEXT to check all the
events programmed, using the +, -
, , , NEXT buttons to make
alterations to each event as
necessary.
When all the events for every day
are as required, press PROG to
return to RUN mode, with the colon
blinking.
The heating system will now be
controlled to provide the temperatures programmed.
Refer to the USER'S GUIDE for details of the manual over-rides
available during day to day operation.

+1 HR
+2 HR
+3 HR

+1 HR
+2 HR
+3 HR

5/2 day mode

+1 HR
+2 HR
+3 HR

7 day mode

2

FACTORY PRE-SET PROGRAMME

The TP75H range of programmable room thermostats are provided with a factory pre-set
programme of switching times and temperatures, so that, once the clock has been set and the
TP75H returned to the RUN mode, the heating system will be controlled at the times and to the
temperatures of the pre-set programme, as shown in the following table and indicated by the
fine line in the diagram below.

The instructions on the previous page show how to change the times and temperatures to the
users requirements.

The table should be used to record the users programme. If the TP75H has been configured
for 5/2 day control only days 1 and 6 need be recorded.

Factory Pre-set Programme, and spaces for user's settings.

Day

Events

123456

Pre-set User's Pre-set User's Pre-set User's Pre-set User's Pre-set User's Pre-set User's

1

(Monday)

Time 06:30 08:30 11:30 13:30 16:30 22:30

°C 20 15 20 15 21 15

°F 68 59 68 59 70 59

2

(Tuesday)

Time 06:30 08:30 11:30 13:30 16:30 22:30

°C 20 15 20 15 21 15

°F 68 59 68 59 70 59

3

(Wednesday)

Time 06:30 08:30 11:30 13:30 16:30 22:30

°C 20 15 20 15 21 15

°F 68 59 68 59 70 59

4

(Thursday)

Time 06:30 08:30 11:30 13:30 16:30 22:30

°C 20 15 20 15 21 15

°F 68 59 68 59 70 59

5

(Friday)

Time 06:30 08:30 11:30 13:30 16:30 22:30

°C 20 15 20 15 21 15

°F 68 59 68 59 70 59

6

(Saturday)

Time 07:30 09:30 11:30 13:30 16:30 22:30

°C 20 20 20 20 21 15

°F 68 59 68 59 70 59

7

(Sunday)

Time 07:30 09:30 11:30 13:30 16:30 22:30

°C 20 20 20 20 21 15

°F 68 59 68 59 70 59

2

3°C

Event 1

Events

2, 3 & 4

Event 5

Event 6

2

2°C

2

1°C

5

6

2

0°C

1

2

3

4

1

9°C

1

8°C

1

7°C

1

6°C

Factory Pre-sets

1

5°C

User's Settings

1

4°C

1

3°C

0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 24:0

0

In the above diagram the heavy line indicates what a typical user-set programme might be. Note
that event 2 has been moved to 14:00, that events 3 & 4 have also been moved to that time,
and that the following control temperature will be that of event 4.

It is possible to move events past midnight into the following day, when the day number will blink
in the display, see the display diagram in the notes on setting event times.

NOTES ON SETTING EVENT
TIMES

If, during the event checking and setting
procedure, no buttons are pressed for
more than two minutes then the TP75H
will return to RUN mode automatically. If
this appears to have occured, it is
advisable to re-check the programme to
ensure that it is as required.

When setting event times and
temperatures it is not possible to set
event times out of chronological order.

Event 1 may be set at any time from 0:00
to 23:59 (but would normally be in the
morning).

Event 2 may be set at any time between
event 1 and 23 hours, 59 minutes after
event 1.

Event 3 may be set at any time between
event 2 and 23 hours, 59 minutes after
event 1.

Event 4 may be set at any time between
event 3 and 23 hours, 59 minutes after

event 1,.... and so on.

If the event time being set is moved past
midnight into the following day then the
number of the following day will blink.

When using the + button to adjust events
1 to 5 and the event time being adjusted
becomes the same as the following event
time, then both are changed
simultaneously. This applies to all
subsequent event times reached and is
demonstrated in the diagram on the left.

When using the - button to adjust events
2 to 6 and the previous event time is
reached the - button ceases to respond.

The factory pre-set programme may be
reinstated by pressing the recessed R/S
(reset) button. This will however reinstate
all the factory pre-set conditions, so that
the clock type, temperature scale and
optimum start period (if enabled) may
also have to be re-set.

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

4

Control may also be restored to normal by pressing the ▲ and ▼
together.

USER OVERRIDES

Whilst the unit is operating normally in RUN mode the following
overrides are available:

TEMPERATURE SETTING OVERRIDE

Press ▲ to increase or ▼ to decrease the current set temperature.
Each press will change the temperature setting by 0.5°C (or 1°F). To
make larger changes press the button and hold it down.

/ OVERRIDE

With (profiled) selected temperature control will follow the
programme.

With (allday) selected the temperature set for Event 1 will
be maintained until Event 6. During this "ALLDAY" period the
programmed temperature may be overriden as above.

+1 HR/+2 HR/+3 HR OVERRIDE

Pressing this button once causes the current control temperature to
last for an extra hour. Press it twice for an extra 2 hours, and three
times for 3 hours. Pressing a fourth time will remove the override.

For example, a comfort temperature of 21°C programmed to end at
22:30 could be extended passed midnight. Alternatively, a morning
set-back temperature of 15°C could be extended to effectively cancel
a midday comfort setting.

BATTERY MAINTENANCE

New batteries will provide the power for switching the outputs on and
off for approximately 2 years. When the batteries volts fall to the
minimum level needed to maintain operation a battery symbol will blink
in the display. When this symbol appears both batteries should be
replaced with high quality alkaline cells. Operation will continue
normally until the 15th midnight after the symbol started blinking and
then the unit will switch off all outputs, and shut down with just the time
and the blinking battery displayed. Whilst the battery symbol is still
blinking, the old batteries may be removed and new batteries placed
in the sleeve provided and inserted within one minute. Internal
circuitry will maintain the user set programme memory during this
period.

SETTING THE CLOCK

Press PROG to display the time of day (the display blinks). Press DAY
(the display stops blinking) to select today (1 = Monday, 6 = Saturday
etc).Press and hold down the + or - button to change the time quickly in
ten minute steps, or press and release to change the time by one minute.

When the day and time are correct, press and release PROG once to
start the clock and further press and release as necessary until the
colon starts blinking, (RUN mode.) The intermediate stages are
explained in the Setting Instructions.

WINTER TIME / SUMMER TIME CLOCK

When the clocks are changed from Summer Time to Winter Time (or
vica versa) there is no need to alter the clock by entering programming
mode (i.e. pressing the PROG button). Instead just press and hold
down the - button to change from Summer Time to Winter Time or the
+ button to change from Winter Time to Summer Time. The first time
this is done (after a RESET) the clock is set and can only be changed
by one hour as appropriate.

If a mistake is made, e.g. pressing the + button in the autumn when the

- button should have been pressed, rectify the problem by pressing the
correct button and then re-setting the clock by one hour as appropriate.
(Refer to SETTING THE CLOCK above).

TIME OR TEMPERATURE DISPLAY

The default display in RUN mode shows the time of day. This may be
changed to display the actual temperature being sensed by pressing
both COPY and NEXT buttons together. Return to time display by
pressing them together again.

THERMOSTAT MODE

The TP75H may be converted to control at a constant, user selected,
temperature by pressing and holding down the ▲ and ▼ buttons until
the display changes to that shown in Fig. 6 with the default temperature
of 8°C (or 46°F), which may be changed as required using the ▲ or ▼
button. The unit will stay in thermostat mode until the ▲ and ▼ are
pressed together again.

FROST THERMOSTAT MODE

Whilst in thermostat mode the TP75H may be set to guard against
possible frost damage in areas where the unit (or its remote sensor) is
fitted. The control temperature may be set to a suitable level using the
▲ or ▼ buttons. The unit will stay in frost thermostat mode until the ▲
and ▼ are pressed together again.

HOLIDAY MODE

Whilst in thermostat mode pressing the DAY button will activate the
holiday mode. The display will change to that shown in Fig. 7 with a
number indicating the default holiday period of 00 days. Use the ▲ or
▼ buttons to adjust the control temperature as required, and use the
+ or - buttons to set the number of days required, in the range 1-99
days. If the number of days is left at 00 then the unit will return to normal
at event 1 the following day. When the selected number of days have
elapsed the unit will automatically return to normal, controlling
temperatures to the set programme.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 4. Clock time ready for
changing. (Colon steady,
digits blinking).

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 5. Temperature
Display. (Room
temperature is below the
set temperature, so the
heating equipment is
switched on).

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 6. Thermostat mode.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 7.
Holiday mode.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 8 Temperature
overridden - heating
equipment on.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 9.
Allday selected - event 1
temperature active.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 10.
Current temperature
extended by 2 hours.

+ 1 HR
+ 2 HR
+ 3 HR

Fig. 11.
Blinking battery symbol,
change batteries.

Part No: 4558 Issue 8 05/05

Danfoss Randall can accept no responsibility for possible errors in catalogues, brochures and other printed material, and reserves the right to alter its products without notice.
This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.

Danfoss Randall Limited

Ampthill Road
Bedford
MK42 9ER
Tel: [phone] Fax: [phone]
Email: [e-mail]
Website: www.danfoss-randall.co.uk