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.
Electronic Programmable Heat Pump Thermostats
HP75-1 with integral sensor
HP75A-1 with remote sensor
USER'S GUIDE
How to:
Select a 12 hour or a 24 hour clock display.
Select a °F or a °C temperature display.
Change between Standard Time and Daylight Savings Time at the
press of a button.
Convert the HP75 to act as a thermostat, controlling at the selected
temperature continuously (Heating Mode or Cooling Mode, not both).
Use the HP75 as a frost protection thermostat.
Use the holiday function.
Override the programmed temperature.
Select emergency heat mode.
PROG EM HEAT/NEXT + - DAY COPY
RUN MODE
While the HP75 is in RUN mode, i.e. controlling the space temperature
in accordance with the program, the colon between the hours and
minutes digits blinks. The colon does not blink while the time and
program are being set.
AUTO
HEAT
COOL
OFF
AUTO
ON
25.0°C 20.0°C
pm
Fig. 1.
Display following a RESET. - RUN
mode. (Colon blinking)
SELECTING THE CLOCK TYPE 12hr (AM/PM) 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 24
hour mode).
AUTO
HEAT
COOL
OFF
AUTO
ON
25.0°c 20.0°c
Fig. 2.
Clock set to 24 hour (AM/PM)
pm
display.
SELECTING THE TEMPERATURE DISPLAY (°F or °C)
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.
AUTO
HEAT
COOL
OFF
AUTO
ON
26.0°C 19.0°C
pm
Fig. 3. Temperature range
changed to Centigrade.
SETTING THE CLOCK
Press PROG to display the time of day on its own (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.
DISPLAY ELEMENTS
(Those that will appear while following this instruction).
Programmed
Program
override
indicators
A/C ON
indicator
AUTO
HEAT
COOL
OFF
AUTO
ON
Fan
running
indicator
Day of week
COOLING
temperature
indicator
25.0°C 20.0°C
18.35
Programmed
HEATING
temperature
indicator
Clock time,
digital
thermometer, or
number of days
on holiday
Heat ON
indicator
Indicates
temperature
display
Temperature
override
indicators
Holiday mode
selected
When the day and time are correct, press and release PROG once to
start the clock and further press and release again until the colon starts
blinking, (RUN mode.) The intermediate stages are explained in the
Setting Instructions.
AUTO
HEAT
COOL
OFF
AUTO
ON
Fig. 4. Clock time ready for
changing.
(Colon steady, digits blinking).
STANDARD TIME / SUMMER TIME CLOCK
When the clocks are changed from Summer Time to Standard Time
(or vice versa) just press and hold down the - button to change from
Summer Time to Standard Time or the + button to change from
Standard 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).
3
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 simultaneously. Return to time display
by pressing them simultaneously again.
AUTO
HEAT
COOL
OFF
AUTO
ON
25.0°C 20.0°C
°C
20.0
Fig. 5.
Temperature Display. (Space
temperature is below the set
temperature, so the heating system
and fan are operating).
THERMOSTAT MODE
The HP75 can be converted to control either heating or cooling, (not
both), at a constant user selected temperature by selecting "Thermostat
mode". To do this, press and hold down both buttons until the
display changes to that shown in fig. 6. When entering thermostat
mode the default setting is heating only, with a default temperature of
8°C (46°F), this can be changed as required by pressing either or
until the require temperature is displayed.
To control at a constant cooling temperature (heat off), press the 'SEL'
button to select 'COOL', the temperature will be shown as 28°C (82°F)
(fig. 6a) use the and buttons to select the required temperature.
When in thermostat mode if "OFF" is selected by means of the
button, both heating and cooling are turned off.
To return to normal programmed operation, press and hold both and .
AUTO
HEAT
COOL
OFF
AUTO
ON
Fig. 6. Thermostat mode (Heating) Fig. 6a Thermostat mode (Cooling)
8°C8°C
8°C
8°C8°C
AUTO
HEAT
COOL
OFF
AUTO
ON
27.7°c
28°C28°C
28°C
28°C28°C
FROST PROTECTION MODE
While in thermostat mode the HP75 may be set to guard against
possible frost damage in areas where the unit (or its remote sensor)
is installed. The heating control temperature may be set to a suitable
level using the and pressed simultaneously.
VACATION MODE - HEATING ONLY OR COOLING ONLY
While in thermostat mode with either HEAT or COOL selected, pressing
the DAY button will activate the holiday mode. The display will change
to that shown in Fig. 7 or Fig. 7a with a number indicating the default
holiday period of 00 days. 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.
AUTO
HEAT
COOL
OFF
AUTO
ON
Fig. 7 - Heating Fig. 7A - Cooling
Control may also be restored to normal before all days have elapsed
by pressing the and simultaneously.
8°c8°c
8°c
8°c8°c
AUTO
HEAT
COOL
OFF
AUTO
ON
28°c28°c
28°c
28°c28°c
USER OVERRIDES
While 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 temperatures.
Each press will change the temperature settings by 0.5°C (or 1°F). To
make larger changes press the button and hold it down. The
temperatures can be raised until the cooling setpoint reaches 36°C
(97°F) or lowered until the heating setpoint reaches 5°C (41°F). Note
that the programmed dead band between the heating and cooling
temperatures is maintained while the override is being used. (Fig. 8 &
Fig.9).
AUTO
HEAT
COOL
OFF
AUTO
ON
23.3°c 18.3°c
13:52
Fig. 8.
Temperature raised - heating
system & fan running.
AUTO
HEAT
COOL
OFF
AUTO
ON
20.0°c 15.5°c
13:52
Fig. 9.
Temperature lowered - cooling
system & fan running.
PROGRAM OVERRIDE
While running in AUTO mode both the heating system and cooling
system will be switched on and off to maintain the selected
temperatures.
The SEL (select) button can be
used to select one of three other
modes (See Fig. 10).
With HEAT selected only the
heating system will be controlled,
the cooling system being switched
off.
With COOL selected only the
cooling system will be controlled,
the heating system being switched
off.
With OFF selected both heating
and cooling will be switched off,
except that the HP75 will switch
on the heating system should the
space temperature being sensed
fall below 5°C (41°F).
FAN OVERRIDE
Pressing the button marked FAN
will change the fan mode between
AUTO, ON and SMART FAN.
AUTO: Thermostat starts fan
when there is a demand for either
heating or cooling. Note: If the installer has selected "Fossil Fuel Aux.
Heat", the fan is controlled by the warm air heater whenever there is
a call for auxiliary heating.
ON: Fan runs continuously.
SMART FAN: Fan runs continuously during events 1-6 unless a
programmed "Off" is encountered, but reverts to Auto mode during
event 6-1. When in "Smart Fan" mode, the bar on the display adjacent
to FAN ON will flash.
AUTO
HEAT
COOL
OFF
AUTO
AUTO
HEAT
COOL
OFF
AUTO
AUTO
HEAT
COOL
OFF
AUTO
ON
AUTO
HEAT
COOL
OFF
AUTO
ON
20.0°c
13:54
ON
25.0°c
13:54
ON
5.0°c
13:54
5.0°c
13:54
Fig. 10
SELECTING EMERGENCY HEAT MODE
The EM HEAT button beneath the
flap can be used to select the
"Emergency Heat" mode. When
selected the heat pump will be turned
off and all heating will be provided
by the auxiliary heating stage. An
"E" in the display will flash until the
unit is returned to normal operation (See Fig.11). To restore the
system to normal heat pump operation press the EM HEAT button,
then SEL button three times to return the unit to the AUTO mode.
AUTO
HEAT
COOL
OFF
AUTO
ON
20.0°c
E
13:54
Fig.11
BATTERY MAINTENANCE
It is recommended that high quality alkaline batteries are used.
New batteries will provide the power for switching the outputs on and
off for approximately 2 years. When the batteries' voltage drops to the
minimum level needed to maintain operation, a battery symbol will
blink in the display (See Fig.12). 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. While the battery
symbol is still blinking, the old batteries may be removed and new
batteries placed in the sleeve and inserted within one minute.
Internal circuitry will maintain the user set program during this period.
AUTO
HEAT
COOL
OFF
AUTO
ON
20.0°c 15.0°c
13:59
Fig. 12.
Blinking battery symbol,
change batteries.
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss 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 Ltd
Ampthill Road
Bedford MK42 9ER
Tel: (01234) 364621 Fax: (01234) 219705
Email: danfossrandall@danfoss.com
Website: www.danfoss-randall.co.uk
Part No: 31181 Iss.3. 06/01
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