Danfoss TP75H Operating 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
hasbeenpressedthedisplayappears
asshown,withthecolonblinking,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-commissioningnotesintheInstallation&CommissioningGuide.
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
TP75Htorun in7daymodeor 5/2day
mode by means of a switch on the
back of the unit.
Thefirst event(time andtemperature)
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.
Tostepthroughthesixavailableevents
press and release the NEXT button.
Whilsteach event isondisplay, itmay
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
possibletoprogrammean OFF simply by pressing the▼ buttonuntil
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.
Usethe+,-, , ,NEXTbuttonsto
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).
UseDAY andNEXTtocheckallthe
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
Intheabovediagramtheheavylineindicateswhatatypicaluser-setprogrammemightbe.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.
Itispossibletomoveeventspastmidnightintothefollowingday,whenthedaynumberwillblink
in the display, see the display diagram in the notes on setting event times.
NOTESONSETTINGEVENT
TIMES
If, during the event checking and setting
procedure, no buttons are pressed for
more than two minutes then the TP75H
willreturntoRUNmode 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.
Event1maybesetatanytimefrom0:00
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.
Ifthe event time being setis moved past
midnight into the following day then the
number of the following day will blink.
Whenusingthe+buttontoadjustevents
1 to 5 and the event time being adjusted
becomesthesameasthefollowingevent
time, then both are changed
simultaneously. This applies to all
subsequent event times reached and is
demonstrated in the diagram on the left.
Whenusingthe - buttontoadjust events
2 to 6 and the previous event time is
reached the - button ceases to respond.
The factory pre-set programme may be
reinstatedbypressing therecessedR/S
(reset)button.Thiswillhoweverreinstate
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.
Thein-builtfeatureisanintelligentelectronicanticipatorwhichmeasures
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
activatedwhentheroomtemperatureis2°Cormorelowerthantheset
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.
IftheoptionalChrono-proportionalfeature hasbeen enabled,thenthe
heat emitters will be switched on at regular intervals to prevent the
large swings in room temperature caused by heat emitters alternating
betweenveryhot and cold. In mild weather and when thesystemisup
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
WhilsttheTP75HisinRUNmode,i.e.controllingthespacetemperature
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
withAM/PMindicationispreferredthenpressandholddowntheNEXT
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)selectedtemperature controlwillfollowthe
programme.
With (allday)selectedthetemperaturesetfor 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
minimumlevelneededtomaintainoperationabatterysymbolwillblink
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
thentheunit will switch off all outputs,andshutdown 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
tenminutesteps,orpressandreleasetochangethetimebyoneminute.
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
vicaversa)thereisno needtoaltertheclockbyentering 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.
Ifamistakeismade,e.g.pressingthe+buttonin theautumn whenthe
-buttonshouldhavebeenpressed,rectifytheproblembypressingthe
correctbuttonandthenre-settingtheclockbyonehourasappropriate.
(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
thedisplaychangestothatshowninFig.6withthedefaulttemperature
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. Ifthenumberofdaysisleftat00thentheunitwillreturntonormal
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
DanfossRandallcanacceptno responsibilityforpossible errorsincatalogues, brochuresandother printedmaterial,and reservestheright toalterits productswithoutnotice.
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: [email protected]
Website: www.danfoss-randall.co.uk