
Electronic Programmable Heat Pump Thermostats
HP75-1 with integral sensor
HP75A-1 with remote sensor
SETTING INSTRUCTIONS
SETTING THE CLOCK
After the recessed RESET button has been
pressed the display appears as shown, with
the colon blinking and all the factory pre-set
conditions will be present.
The clock is a 24 hour type. To change to a 12
hour type with am/pm indication press and
hold down the 'NEXT' and 'DAY' buttons until
the display changes. (Repeat to change back
to 24 hour mode).
The control temperatures are shown in °C but can be changed to
display °F if this is preferred. To change, press and hold down 'DAY'
and 'COPY' buttons until the display changes.
To set the clock to the correct time and day, 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). To change the time quickly in ten minute steps press and
hold down the + or - buttons.
To change the time one minute at a time press and release these
buttons. When the time is correct press PROG to start the clock and
continue setting sequence.
SETTING THE EVENT TIMES & TEMPERATURES
The HP75 can be set by the installer to provide either 2 or 6 events
each day. Refer to the installer setting instructions if this parameter
needs to be altered. Please note that for simplicity the diagrams in this
setting instruction assume that the unit has been set in the “6 events
per day” mode.
The first event (time and temperature) is displayed, together with the
day or days when it is active. Note that the day number(s) displayed
will be that of the current day. In 7 Day mode only a single day number
will be displayed, in 5/2 Day mode either 12345 or 67 will be displayed.
To go through the available events press and release the NEXT
button. While each event is on display, it may be altered as required.
Selecting an event time
Press and hold down the + or - buttons
to change the event time in ten minute
steps. Press and release to change by
one minute.
Selecting a heating temperature
Press and release the button to raise
the HEATING control temperature by
0.5°C (1°F), or press and release the
button to lower the HEATING control
temperature by 0.5°C (1°F) . Press and
hold down these buttons to make larger
changes to the control temperature.
Selecting a cooling temperature
Press and release the button to raise
the cooling control temperature by 0.5°C
(1°F), or press and release the button
to lower the cooling control temperature
by 0.5°C (1°F).
Event No.
AUTO
HEAT
COOL
AUTO
Event No.
AUTO
COOL
AUTO
7 day mode
Cooling
Control
temp.
25.0°C 20.0°C
OFF
ON
Day
5/2 day mode
Cooling
Control
temp.
HEAT
25.0°c 20.0°c
OFF
ON
Days
Heating
Control
temp.
Heating
Control
temp.
Time
Time
PROG EM HEAT/NEXT + - DAY COPY
Selection of an 'OFF' event
If there is a demand to turn 'OFF' rather than turn down the heating or
turn up the cooling, for example during unoccupied periods, an 'OFF'
event can be selected.
Selecting a programmed "Off" event for heating: use the button to
lower the heating set temperature to its minimum value which is "Off",
the characters "Of" will replace the heating control temperature.
Selecting a programmed "Off" event for cooling: use the button to
raise the cooling set temperature to its maximum value which is "Off",
the characters "Of" will replace the cooling control temperature value.
When all events for the day(s) on the
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 HP75 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 mode will repeat the events programmed
for days 1 to 5 on the weekend).
Use the DAY and NEXT buttons to check all the programmed events,
using the +,-,, , , buttons to make changes to each event as
necessary.
TO EXIT THE PROGRAMMING MODE
When all the events for every day are
as desired, press PROG to return to
RUN mode with the colon blinking.
The heating/cooling system will now
be controlled to provide the
programmed temperatures.
Refer to USER GUIDE for details of manual overrides available in day
to day operation.
22:00
7 day mode
AUTO
HEAT
COOL
OFF
AUTO
ON
25.0°c 20.0°c
5/2 day mode
AUTO
HEAT
COOL
OFF
AUTO
AUTO
HEAT
COOL
OFF
AUTO
ON
ON
25.0°c 20.0°c
27.2°c 15.0°c
13.52
1

Setting record for thermostat set for
six events each day
Setting record for thermostat set for
two events each day
Format 1 2 3 4 5 6
CLG HTG CLG HT G CLG HTG CLG HTG CLG HTG CLG HTG
25.0°C 20.0°C 27.2°C 15.0°C 25.0°C 20.0°C 27.2°C 15.0°C 25.0°C 20.0 °C 27.2°C 15.0°C
6:30 8:30 11:30 13:30 16:30 22:30
1 (Monday)
2 (Tuesday)
3 (Wednesday)
4 (Thursday)
5 (Friday)
27.2°C 20.0°C 27.2°C 20.0°C 25.0°C 20.0°C 25.0° C 20.0°C 25.0°C 21.1°C 27.2°C 15.0°C
7:30 9:30 11:30 13:30 16:30 22:30
6 (Saturday)
7 (Sunday)
Event Numbers
Pre-set programmes, Monday to Friday
Actual User Settings, Monday to Friday
Pre-set Programmes, Saturday & Sunday
Actual User Settings, Saturday & Sunday
If the unit is to operate in 5/2 day mode, then only days 1 and 6 need be completed.
NOTES ON SETTING EVENT TIMES
(Assumes unit is in 6 events/day mode)
I
f, during the event checking and setting procedure, no buttons are
pressed for more than two minutes then the HP75 will return to RUN
mode automatically. If this appears to have occurred, it is advisable to
re-check the program 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 0:00AM to 11:59PM (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.
32°C
31°C
30°C
29°C
28°C
COOLING
27°C
26°C
25°C
24°C
23°C
FACTORY
22°C
PRE-SET
21°C
20°C
PROGRAMME
19°C
18°C
17°C
16°C
HEATING
15°C
14°C
13°C
MIDNIGHT 3:00 6:00 9:00 12:00 15:00 1 8:00 21:00 MIDNIGHT
EVENT 1
5°C
DEAD
BAND
EVENT 3
EVENT 2
EVENT 4
EVENT 5
EVENT 6
Event Number
Format 1 2
CLG HTG CLG HTG
Time TIme
Pre-set programmes, M onday to Friday
25.0°C 21.1°C Off 15.0°C
8:30 17:30
Actual User Settings, Mon day to Friday
1 (Monday)
2 (Tuesday)
3 (Wednesday)
4 (Thursday)
5 (Friday)
Pre-set Programmes, Saturday & Sunday
Off Off Off Off
8:30 17:30
Actual User Settings, Saturday & Sunday
6 (Saturday)
7 (Sunday)
If the event time being set is moved past midnight into the following day
then the number of the following day will blink.
15.0°C
00:30
12:30
am
Event 6 on day 6 set after
midnight.
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 lower 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 RESET button. This will however reinstate all the factory preset conditions so that the clock type and temperature scale may also
have to be re-set.
32°C
31°C
30°C
29°C
28°C
COOLING
27°C
26°C
25°C
24°C
23°C
EXAMPLE
22°C
USER SET
21°C
20°C
PROGRAMME
19°C
18°C
17°C
16°C
HEATING
15°C
14°C
13°C
MIDNIGHT 3:00 6:0 0 9:00 12: 00 15:00 18:00 21:00 MIDNIGHT
EVENT 1
3°C
DEAD
BAND
Manual overide used at 9am
MANUAL OVERRIDE = USED
AT 9 AM TO RAISE
to raise temperature by 2°C.
TEMPERATURE BY 2°C.
PROGRAMMED 3°C DEAD
Programmed 3°C dead band
BAND MAINTAINED.
maintained.
EVENT 5
EVENTS
2, 3 & 4
EVENT 6
2
In the diagram opposite, event 2 has been moved to 3:30PM. Note 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.