1. Operation
If the pre set temperature is enabled
when you return home:
1.1 Manual Operation
These functions allow manipulating the temperature without
changing the programme.
Manual operation can be carried out in two ways:
1. Press b
The temperature of the current switching time appears for
a few seconds. The arrow is by the current switching time.
2. Press Z or a to set the temperature (if required)
3. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept.
Temporary temperature change
1. Press key Z or a till needed temperature is displayed.
(To check temperature without changing exit by pressing
b)
2. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept. The current temperature is displayed again.
This temperature will be used until the next programming
step.
This procedure is valid only when the Weekly programme
k, the Daily programme j or the Party/Boost programme l is enabled.
1.3 Weekly programme k
This programme allows you to repeat the same programme
every week.
1 2 3 4 5 6 7
d
W
the value is 1, the function will end at 12.00 a.m. and the
d
1 2 3 4 5 6 7
1.2 Going out/Returning home function
k
j
l
ß
1. Press Y and select j. The daily programme is enabled.
The current temperature and the time of day are displayed.
The arrows indicate the daily programme j, the current
time range (n | r } ~ M) and the setpoint
temperature range ( v u t ).
1.5 Party/Boost programme l
To override the programmed temperature for a period of 3
hours.
After 3 hours the room thermostat will return to the weekly
programme.
Operating elements
1 2 3 4 5 6 7
Early morning
Morning
Noon
Afternoon
Evening
Night
Comfort temperature
Standard temperature
Setback temperature
Radio-control enabled
4 Use
Heating is active
5 Features
6 Function Description
6.1 Setting controller features
6.2 Performance Instat 868-r…
6.3 Setting the programmes
6.4 Setting no. of switching times per day
6.5 Control type
6.6 PWM or ON/OFF Control
6.7 Optimum Start
6.8 Valve protection
6.9 Temperature display
6.10 Temperature display offset
6.11 Change-over between heating and cooling
6.12 Manually switching on/off the output
6.13 Displaying room or setpoint temperature
6.14 Displaying operation hours
6.15 Erase/Reset
6.16 Display the symbol U
6.17 Learn mode
I Temperature Time Chart
2
3
1
2
Use these keys to change the blinking feature
(arrow or digit).
5. Press b. The switching time digits blink.
6. Press Z or a to set the digit.
7. Repeat steps 5 and 6 for each digit.
After pressing b to confirm the minutes, the arrow
will blink by v u t so that you can set the temperatures.
8. Press Z or a to set one of the three available temperatures v u t.
9. Press b to confirm.
The arrow blinks by n | r } ~ M.
10. Repeat steps from 4 on to programme additional
switching times.
11. If the arrow blinks on the last icon by s, by pressing a
you can go to the setting of the next day.
If the arrow blinks on the first icon n , by pressing
Z you can go to the setting of the next day.
12. Press Y to exit programming mode.
To exit setting mode press Y .
Pressing and holding down Z or a will cause the corresponding digits to quickly scroll, for example when inputting the
time.
Press Y or don't press any key for about 1 min. to exit the
current setting, without storing the new value. The weekly
programme is turned on.
3
4
5
23
22
21
6
2
19
18
17
16
1
2
3
To change the programme
follow steps 1 and 2
4
3
15
14
6 Switching times P1
15
14
4
6
8
10
12
14
16
18
20
22
4 Switching times P2
0
24 Uhrzeit
2
4
6
8
10
12
14
16
18
20
22
Setting the time
Select/Set
Mon…Fri Working days
Sat...Sun Weekends
Mon...Sun All days
Setting is carried out as described in above step 2.
Press Z or a until the required range blinks.
If only few days are different from the other days of the
week, you can programme the whole week first by means
of the Mon...Sun block (all days).
Then you can change the different days.
To set 6, switching times
b) The unit digit of minutes cannot be set,
–>Resolution = 10 Minutes.
c) Switching off times do not need to be entered separately.
The next start time is automatically set as the previous
switch-off time.
d) If several switching times use the same temperature:
Set all these switching times to the same temperature
e) The night switching time s can also be set after midnight
(until 5:50 a.m.), for example. switching time = 2:30; the
temperature will be decreased at 2:30 a.m.
To set 8, temperatures
f) It is possible to select among three pre-set temperatures,
which can be changed as discussed under section 2.4
"Setting temperatures". Setting of temperatures and switching times are independent. If one of the Temperatures v
u t is changed, such change will affect all settings the corresponding temperature was assigned to as explained
under 2.3.8.
Setting switching times for the extra daily
programme
The daily programme is repeated on a day by day basis.
Select j as described above, under section 2.3 step 2.
Carry out the above procedure, with the exception of item
11. In this way, weekly programme settings won't be affected.
Checking switching times
To determine which switching times are set:
1. Select the required day of the week, or the extra daily programme j (the blocks can only be checked as individual
days).
2. Press Z or a to select the desired switching time
(n| r} ~ M). (don't press b)
3. Press Y to exit.
2.4 Setting temperatures y
Here you can set the temperatures. These temperatures can
be assigned to the respective times (see II Switching Times
Table, 2.3 "Setting Switching Times").
1
2
3
1. Press Y and select y.
The arrow blinks in the temperature group v u t.
2. Press Z or a to select one of the three available temperatures. The corresponding temperature is displayed.
3. Press b The temperature blinks.
4. Press Z or a to set the temperature.
5. Press b The arrow blinks in the temperature group.
6. To program more temperatures repeat steps from 2 on
7. Press Y to exit programming mode.
Note:
Setting of temperatures and switching times are independent. If one of the temperatures v u t is changed, this change
will affect any setting which the corresponding temperature
was assigned to, as described under 2.3 „Setting switching
times".
Confirm
Checking temperatures
Function:
time setting
see 2.2
Mode
Carry out steps 1 and 2 above to determine which temperatures are set. Press Y to exit.
°C
24 Uhrzeit
23
Comfort 1
22
1
Optimum Start
The device automatically
determines the time when
the heating process must
begin in order to reach the
required room temperature
within the set time, for
example, it may start
heating already at 5:00 a.m.
instead of 6:00 a.m.
Illustration of daily temperature
behaviour with 2, 4, 6 switching
times per day
2
1 20
19
18
2 17
9. Dimensions
2 Switching times P5
16
15
10. Technical Data
3 14
0
Only sections 1, 2 and 3 are intended for users.
All other remaining sections are for the installer.
2
4
6
8
10
12
14
16
18
20
22
II Table of Programmes and Switching Times
Programme
Switching Times
P1
P2
P3
P4
P5
Standardprogramme
The standard programmes are factory set. They should make
programming easier.
Refer to Table II for specific temperatures and switching times
of each programme.
6
4
4
4
2
u2
t3
21°C
21°C
28°C
21°C
21°C
18°C
18°C
18°C
18°C
18°C
15°C
15°C
18°C
18°C
18°C
When you select a programme, the previously set
"Number of Switching Times" and temperatures
will be overwritten with the new settings of this
programme. The switching times will remain
unchanged.
Temperature
P1,P2 P3,
P4,P5
16
15
14
0
4
2
6
8
10
12
14
16
18
20
22
24
Time
Start Time
j
Temperature
P1,P2 P3,
P4,P5
n
Early morn.
6.00
6.00
21°C
28°C
21°C
7.00
7.00
21°C
28°C
21°C
7.00
21°C
28°C
21°C
o
Morning
8.30
8.30
18°C
18°C
18°C
10.00
10.00
18°C
18°C
18°C
10.00
18°C
18°C
18°C
r
Noon
12.00
12.00
21°C
12.00
12.00
21°C
12.00
21°C
}
Afternoon
14.00
14.00
18°C
14.00
14.00
21°C
14.00
21°C
~
Evening
17.00
17.00
21°C
28°C
21°C
17.00
17.00
21°C
28°C
21°C
17.00
21°C
28°C
21°C
s
Night
22.00
23.00
15°C
18°C
18°C
23.00
22.00
15°C
18°C
15°C
23.00
15°C
18°C
18°C
Set the time
+
1st Step
2nd Step:
OK
Set the switching times
See 2.3
For ex. switching time 12.00 is the beginning
of time range “Noon“
Set the temperature
See 2.4
Function:
setting
switching times
see 2.3
Mode
w
Back to
weekly programme
Select/Set
d
1 2 3 4 5 6 7
1 2 3 4 5
6 7
This protection prevents control settings from being changed. It can be enabled only if the control is in one of the operating modes (k j A l ß).
Confirm
Function:
setting
temperatures
see 2.4
Mode
1 2 3 4 5 6 7
Single days
Daily programme
Day-block: Mon…Sun
Day-block: Mon…Fri
Day-block: Sat…Sun
OK
No. Switching times
6
4
2
•
•
•
•
•
•
•
•
•
Morning
Forenoon
Noon
Afternoon
Evening
Night
+
Scroll the menu upwards
or downwards to set
other days
+
OK
1
Comfort
Temperature
2
Standard
Temperature
3
Setback
Temperature
+
Set
temperature
value
O
OK
+
2
3
Comfort
Temperatur
Standard
Temperature
OK
Select
temperature
Mode
Setback
Temperature
O
OK
Select next
switching time
or
•
Mode
Select
temperature
range
OK
Set
start time
+
1
•
•
Select day time range
using keys + and –
Exit
2.6 Reset
Reset:
When unexpected results occur, the reset key should be pressed.
All data are maintained, except for the time and day of the
week.
To activate Reset:
Use a pointed object to press the hole between the x keys.
After that, you should enter the time and day again.
2.7 Access protection
Step 2
Setting temperatures
Confirm
Programme selection see 6.3
Daily programme
Start Time
(Sa)
(So)
OK
17
+
Weekly programme k
Temperature
P1,P2 P3,
P4,P5
18
Setback 3
Select/Set
v1
Select a day
1= Monday … 7=Sunday
19
Standard 2
Step 1
Setting switching times
24 Uhrzeit
12 3 4 5 6 7
+
21
20
23
22
21
8 Start-up
Day
Z bzw. a
Temperatur
7 Installation
Start Time
(Mon,Tue,Wed,Thu) (Fri)
If only 2 or 4 Switching Times are set, some switching times are skipped.
1 20
20
19
18
17
16
2
Afternoon
Evening
Night
Temperatur
23
22
21
0
Early morning }
Morning
~
Noon
M
2.5. Brief introduction
(for standard programmes Mon...Sun)
Temperatur
1
n
|
r
Press this key untill the required function is
selected. The arrow blinks at the feature.
k .
Enabling the party function
1. Press Y and select l
The evening temperature will now remain enabled for 3
hours.
2. Press Z or a to set the temperature (if required).
3. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept.
The current temperature is displayed again.
OK key
ON/OFF
+ key
Reset
– key
Mode key
Indicator in icon
Lern Mode/
Access protection
Cooling mode
3 Tips, Tricks, Troubleshooting
1
2
3
Temperature
Ranges Group
Batteries need replacing
m y the following procedure
Setting weekly programme switching times
The weekly programme is repeated week by week.
See also 2.5 Brief Tutorial
1. Press Y and select m.
The arrow blinks by number 1 = Monday.
2. Press Z or a to set the day.
3. Press b.
The arrow will blink in the switching time group, by
n (Early morning).
The switching time and temperature set until that
moment are displayed.
4. Press Z or a to select the desired switching time
(n | r } ~ M).
Y
Use this key to confirm the value. The arrow
blinks by the next feature
During programming, this sequence is often repeated:
Press Z or a to change, then confirm with b .
If you have finished setting a certain function, the arrow is on
Switching Times Group
(Time ranges)
Time setting
Switching times setting
Temperature setting
2.1 General programming function
For settable functions 3
applies:
b
extra daily programme
Weekly programme
Daily programme
Manual operation
Party/Boost programme
Holiday
Programming allows setting the following:
• Time
3
Time setting of controls equipped with RF clock is automatic.
• Switching Times
m
(times when the set temperature should be reached)
• Temperatures
y
(desired room temperature)
• Other Functions
d
Days (1=Mon, 2=Tue, 3=Wed, 4=Thu, 5=Fri, 6=Sat, 7=Sun)
3
m
y
The switching times and temperatures should be
programmed only if you need to vary the factory-set standard programme. (See Table II)
Night
2 Programming
2.1 General programming function
2.2 Setting time/day
2.3 Setting switching times
2.4 Setting temperature
2.5 Brief Introduction
2.6 Reset
2.7 Access protection
2.8 ON / OFF function
2.9 Changing the batteries
2.10 RF clock
2.11 Cleaning
If you need to change the standard programme, here you can
set 2, 4 or 6 switching times per day. One of the 3 available
temperatures can be assigned to these time ranges (see
Switching times table II or 2.4 “Setting temperatures”).
Night
A
mode.
Evening
Table of Contents
II Programmes and Switching times table
1 Operation
1.1 Manual operation
1.2 Going out/Returning home
1.3 Weekly Programme
1.4 Daily Programme
1.5 Party/Boost programme
1.6 Holiday Function
1
2
3
Key b can be used as Going out/returning home key. If you
leave the house it is possible to decrease the temperature by
pressing this key. If you press it again, the control will switch
back to the automatic programme.
This function has to be previously set up. (See 6.1). It is enabled only in operating modes k and j. The Night temperature t3 is always used as setback temperature.
The setback temperature is enabled until:
– key b or Y is pressed again, or
– switching time n (06.00 a.m.) of the following day.
Then the automatic programme will take over again.
To terminate this function earlier, select another operating
d
d
1
2
3
weekly programme will be enabled.
2. Programming
This program allows you to repeat the same daily programme j on a day by day basis.
1. Press Y and select A
2. Press Z or a to set the temperature.
3. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept.
The current temperature is displayed again.
I Temperature Time Chart
d
The day counter will decrease by 1 at 12.00 a.m. daily. When
1. Press Y and select k.
Now, the weekly programme is enabled.
The current temperature and the time are displayed. The
arrows indicate the day (1..7), the current time range (n
| r } q M) and the setpoint temperature range
( v u t ).
1
2
3
INSTAT 868… with optional RF clock
2.3 Setting switching times m
(changing the standard programme)
number of days you have set.
1.4 Daily Programme j
Versions:
Here you can set the time and day of the week.
1. Press Y and select 3.
2. Press Z or a to select the current day (1...7).
3. Press b.
An hour digit blinks.
4. Press Z or a to set the hour.
5. Repeat steps 3 and 4 to set hours and minutes.
Controls equipped with RF clock won't allow you to enter the
time and day, see 2.10.
1 2 3 4 5 6 7
The set temperature is permanently maintained. You can exit
this mode by selecting another operation mode k j l
ß.
Note :
The Instat 868 (868 MHz) could not be used with the
receivers of the INSTAT 6 (433 MHz) series.
1 2 3 4 5 6 7
The selected temperature is enabled immediately for the
1
2
3
Temperature can be permanently changed
by programming manual operation A
1 2 3 4 5 6 7
1. Press Y and select ß.
The pre-set number of days is displayed, e.g 1 (1 day).
2. Press Z or. a to change the day counter.
3. Press b
The temperature blinks.
4. Press Z or a to change the temperature (if required).
5. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept.
The number of set days is displayed.
Afternoon
INSTAT 868-r
Weekly Programme
Daily Programme
Manual operation
Party/Boost
Holiday
Noon
k
j
A
l
ß
This function allows the selction of a temperature (5 ... 40°C)
for a certain number of days (1 ... 199).
Once such period has elapsed, the control will switch to the
weekly programme at 12.00 a.m. of the last day.
Morning
User's and
Installation Manual
1. Press b
The set-back temperature is displayed for a few seconds.
The arrow is by s
2. Press Z or a to set the temperature (if required)
3. Press b to confirm. Otherwise after 5 sec here will be a
auto-accept.
Additional Programming Details
a) In addition to single days of the week, you can also set
blocks of days.
All the days in a block are set to the same switching
times and temperatures.
The following blocks are available:
(the arrow blinks by all these days)
2.2 Setting time/day 3
1.6 Holiday Function ß
When you leave the house and the automatic
programme is enabled
The following operating modes can be selected by pressing
Y:
Early Morn.
468 931 002 948
Exit
Enabling the protection:
1. Press and hold down key b then press also Z. Release
Z first, then b.
2. z is displayed.
Now the values can not be changed any more.
Disabling the protection:
1. Press and hold down key b then press also a. Release a
first, then b.
2. z disappears.
Now you can enter values again.
2.8 ON / OFF function
By pressing b for 5 Sec. the INSTAT 868-r can be switched
ON and OFF.
ISwitching OFF
Press b for 5 Sec.
OFF will be displayed instead of the time
Switching ON
Press b for 5 Sec.
The time will be displayed instead of
OFF .
4. Use
2.9 Changing the batteries
When the icon
appears, the batteries should be
replaced within the next days. Insert the new batteries in the
battery compartment on the back of the housing. Check for
correct polarity. Use only the batteries indicated under
item 10 "Specifications”. After changing the batteries, the
time and day should be adjusted again (this is automatic in
those controls equipped with an RF clock); all the remaining
settings are maintained.
Dispose of the batteries in compliance with the relevant regulations in force.
2.10 RF clock
It is not necessary to enter the time and day for the controls
equipped with an RF clock. The control will automatically
switch from summer to winter.
After energising the control, the time will be acquired by
radio signal. The icon {. will appear on the lower right side
of the display. The current time is displayed after ~3 minutes.
If the RF clock is enabled (icon { displayed on the screen), it
is not possible to enter the time and day manually.
The time will be adjusted every day at 3 o'clock by radio signal.
If the time cannot be automatically acquired, the { icon will
disappear after ~10 minutes. The display will show 0:00, and
now the time can be set manually.
Every 3 hours the radio control will try to automatically update the time.
2.11 Cleaning
Use a soft, damp cloth and a mild detergent.
3. Tips, Tricks, Troubleshooting
If certain days don't fit the regular setting of the
weekly programme:
Use the separate daily programme j. There you can
programme the switching times and temperatures
required for this specific day.
If you leave the house during these days, press Y to
switch to the daily programme j.
You would like to go on holidays and ensure the
highest possible energy saving during this period.
Use the Holiday function, see 1.6.
You would like to keep the temperature at a certain value till further notice.
Use the Manual operation, see 1.1.
You would like to change the temperature for a
limited period of 3 hours.
Use the Party function, see 1.5.
You leave the house and would like that the temperature returns to your usual values at the next
programmed time.
Use the Manual operation, see 1.1.
You would like to go out in the evening
The function Going out/Returning home allows an
immediate temperature setback, see 1.2.
1.
2.
3.
4.
5.
6.
5. Features
• Fuzzy-Control, with PWM output (Pulse-WidthModulation)
• Optimum Start (the desired temperature is reached within
the set time), can be disabled.
• 5 Pre-set programmes (with 2, 4, 6 switching times)
• 3 adjustable temperatures (comfort, standard, night)
• 2, 4, 6 selectable times per day, (each time can be assigned one of the 3 available temperatures), blocks of days
can be used
• An extra daily programme (for special cases, such as public
holidays or when you go on holidays) in addition to the
weekly programme
• Manual Operation that enables:
– changing the temperature until the next programme
step
– permanently changing the temperature
• Going out/Returning home function for a quick
temperature setback
• ON/OFF function
• Access protection
• Holiday function (a certain temperature can be selected
for a settable number of days)
• Party/Boost function (to override the programmed
temperature for a period of 3 hours) with manual
temperature change
• Operation hours counter (1 through 9999 hours, the heating requirement time is recorded)
• It can be also used as an ON/OFF Controller (e.g. for oil or
gas fired burners)
• Pump/Valve protection (the output is enabled for 3 minutes daily), can be disabled
• It can be used to set-back other simple roomstats with a
set-back input
• Room or setpoint temperature display, selectable
• Temperature display can be offset (to meet individual
needs)
• Output can be manually switched on/off (for a quick functional check)
• Changeover between heating and cooling (for floor cooling systems, there is no Optimum Start for cooling mode)
• LCD-Display with clear, simultaneous indication of Room
Temperature, Time, Day, Operating Mode, Time Zone,
Temperature Zone
• Menu-driven operation through 4 keys
• Elegant design
6. Function Description
Troubleshooting:
1.
2.
3.
4.
5.
It gets warm too late:
a) Do the programmed switching time and clock time
agree?
b) Is the Optimum Start Function enabled? See 6.7
c) Did the control have enough time (a few days) to
acquire data on the room?
d) Is the previous switching time sufficiently far to allow
the warm-up time?
The device won't accept any data input:
Is the Access protection switched off? See 2.7
If need be, activate Reset, see 2.6
Reset all switching times and temperature to the
factory-set values.
see 6.15 "Erase"
The display shows o o o or u u u .
The temperature has exceeded the display range.
The display will show z
Learn Mode was not terminated, see 6.16.
The Access protection is enabled, see 2.7
Enter the set values here
Position 1
Position 3
Position 2
Position 4
k
6.2 Performance Instat 868-r...
The electronic Room Temperature Control INSTAT 868 can
be used to control the room temperature via:
• Actuators for floor and convector heating systems
• Oil and gas fired hot water heating systems
• Circulating pumps
• Heat pumps
• Electric space heaters
1
j
3
5
The INSTAT 868 performs the remote control of actuators.
Temperature can be acquired at the best location, as far as
sensing is concerned, in the room. This makes additional
energy savings possible.
The actuators can be easily controlled from anywhere in the
room or in the house.
No wiring is required between transmitter and receiver.
Power is supplied by two "long-lasting" batteries.
The controller features a timer transmission signal. The builtin timer allows radio-controlling the temperature setback
function of additional controllers by means of a RF receiver.
Several receivers can be controlled by a single transmitter.
The transmitter-receiver co-ordination is automatic, through
the "Learn Mode" feature. Through the Learn Mode see 6.17,
the transmitter and the receiver are syncronized. In this way,
the influence of other INSTAT 868 controls is ruled out.
The transmission frequency used is intended for these applications all over Europe. Transmission safety is ensured by special test procedures and repetitions.
Transmission power is very low. It is much lower than that of
a mobile phone. In addition, the transmitter will only be active every 10 minutes.
This device requires one of the INSTAT 868 a1, a4 or a6 RFreceivers to control the user units.
The INSTAT 868-rd is equipped with a DCF77 radio-controlled clock.
6.3 Setting the programmes
The INSTAT 868 features 5 programmes, see table II.
Programme Table
The user can select one of these programmes to suit his or
her lifestyle. If required, the switching times, temperatures
and "number of switching times" can be adjusted.
When you select a programme, the previously set "Number
of Switching Times" and temperatures will be overwritten
with the new settings of this programme. The switching times
will remain unchanged.
To select it, choose menu k, position 2
6.4 Setting no. of switching times
According to the user's lifestyle, 2, 4, 6 Switching Times per
day can be set. If, for example. P1 with 6 switching times is
selected, the number of switching times can be adjusted, if
required.
2 switching times per day
(only the switching times for n and s are used).
4 switching times per day
(the switching times for r and } are not used).
6 switching times per day (all switching times are used)
When programming the switching times, the unavailable switching times will not be displayed.
To select it, choose menu k , position 3
6.5 Control action
6.1 Setting controller features
The controller features can be set through menu items.
To access a menu, select one of the operating modes (k j
A l ß).
The relevant features are shown in Table III.
Note:
Record the selected settings on the chart below, for later
tests. Hand over the instructions together with these records
to your customer.
Checking the features:
Call the menu by:
1 Press Y and select the required icon (k j A l ß).
See Table III.
2. Press and hold down key b, then press also Y .
Release Y, first, then b .
The currently valid settings are displayed (see Table III).
3. Press Y to exit.
Changing the settings:
Call the menu by:
1. Press Y and select the required icon.
(k j A l ß). See Table III.
2. Press and hold down key b then press also Y .
Release Y, first, then b .
3. The currently valid settings are displayed (see Table III).
The first position in the menu blinks.
Record these values on the chart left side (if not already
done)
4. Press b to move to the required position, re-adjust the
previous values, if required
5. Press Z or a to set the desired digit.
6. Press b until you exit the menu.
If you exit the menu by pressing Y, the settings will not be
stored.
For PWM (setting: j position 1 = 0, see 6.1)
The control calculates a control value from the difference
between setpoint and actual temperature, according to an
intelligent control algorithm. This value is output as variable
Pulse/Pause ratio (Pulse-Width-Modulation).
The control algorithm used tries to keep room temperature
constant. For that purpose, a reduced amount of heat needs
to be supplied even after the setpoint temperature has already been reached.
The sum of Pulse and Pause times is constant and equal to 10
minutes.
If temperature difference is greater, the control is permanently switched on or off, for example for temperature setback.
Behaviour of Puls-Pause-Ratio
according to Temperature
Pulse-Pause-Ratio
100%
continuously on
Note:
a) The maximum limit up to which the controller can extend
the pre-heating time is the previous switching time.
b) At the first start-up, after the function "Erase or MasterReset" or at the beginning of the heating period, the control still does not have any valid parameters. For this reason, it is possible that during the first pre-heating stage the
setpoint temperature is not reached within the programmed time. Adjusting to the specific room conditions
can take several days
Note:
Vale protection is active even if the controller is switched off
via function 2.8.
6.9 Temperature display
If the temperature exceeds the high or low limit of the display range, the writing "ooo" or "u u u" respectively will be
displayed".
Temperature is measured and displayed every 10 minutes.
For quick measuring purposes, after a key is pressed the temperature will be updated every 15 seconds for 10 minutes.
If the temperature displayed by the control does not meet
the expectations, it can be adjusted according to the relevant
environmental conditions. (see 6.10)
6.10 Temperature display offset
A variation in steps of 0.1 degrees for -4.0 ...+15 degrees is
possible. Set-up procedure:
1. Make sure the controller has been operating for at least 1
hour.
2. Measure room temperature using a thermometer you
trust (directly nearby the INSTAT 868, ~1 cm away from
the wall).
3. Set the INSTAT 868 temperature to the measured temperature by:
3.1 Select menu l, set position 3 to 1 (See 6.1).
3.2 Press key b
Room temperature is displayed and blinks.
3.3 Press Z or a to set the desired temperature.
3.4 Press b to confirm.
The modified room temperature is displayed.
To cancel the change:
1. Activate Reset, see 6.15
2. While only the above row is displayed (no temperature),
set position 3 in Menu l to 1, see 6.1.
3. Press b to confirm.
The temperature display disappears. After ~2 minutes, the
unchanged temperature will be displayed.
6.11 Switching between heating
and cooling
The INSTAT 868 can also be used for cooling (for example,
for floor cooling) (only cooling). The Optimum Start and the
temperature limiting function are not available in this case.
Setting: menu A , position 3, see 6.1
P is displayed permanently indicating that cooling mode is
active.
6.12 Switching the output on and off
manually
To carry out a quick test, the output relay can be manually
switched on/off by pressing a key.
Setting: menu l , position 4, see 6.1
After ~15 seconds the output returns to normal operation.
6.13 Displaying room or setpoint temp.
0%
Setpoint
Temperature
Output signal
10 min 10 min
10 min 10 min
You can select if room or setpoint temperature should be
permanently displayed.
Setting: menu A, position 2, see 6.1
6.14 Displaying operation hours
For ON/OFF control
setting see: j position 1 = 1, see 6.1
If the setpoint temperature is not reached, the output switches on, if the setpoint temperature is exceeded, the output
switches off again. This change-over occurs at least every 10
minutes (if room temperature is constant).
On
This display allows reading the number of hours during which
heat was requested by the control.
Inquiry: menu ß, see 6.1
The hours will be displayed for as long as the keys are pressed.
The hours are counted starting from the last "Erase" see 6.15.
The counter is not affected by the display function!
Entire hours are displayed, for example 010 = 10 hours.
6.15 Erase/Reset
III. Controller features
Off
Feature
Menu
Position
Default
Value
Fixed
Programme
k
k
1
2
Room
P1
Switching times
per day
Valve protection
k
3
6
k
4
On
Control
action
display U
j
1
PWM
j
2
don't show U
free
j
3,4
–
1
1
3
5
2
6
0
1
0
1
0
1
–
=
=
=
=
=
=
=
=
=
=
=
=
Room
P1, 2 = P2
P3, 4 = P4
P5
2 sw. times, 4= 4 sw. times
6 sw. times
Off
On
PWM,
On/Off
dont show U
show U
Number
Setpoint
Temperature
1
2
6.6 PWM or ON/OFF Control
3
4
5
6
Pulse-Width-Modulation is the best procedure, since it allows
reaching a "quasi constant" behaviour of the controlled system. PWM is specially suitable for electric heating, pump control or when electrothermal actuators are used.
In those cases where a frequent switching of the actuating
element is to be avoided, such as direct burner control, or in
those applications where the fact of exceeding or falling
below a temperature is reported, the ON/OFF control should
be used.
7
6.7 Optimum Start
Optimum Start
A
1
On
Room or Setpoint
temp. display
Heating/Cooling
change-over
b key as
going out/ret. home
A
2
Room temperature
A
3
Heating
A
4
disabled
Learn Mode
l
1
-
1 = automatic address
2 = manual address
free
Temperature
offset
Relay on/off
l
l
2
3
–
l
4
–
1
0
1
0
Operation hours
counter
ß
–
0
1
0
1
0
1
0
1
=
=
=
=
=
=
=
=
=
=
=
=
Off
On
Room temperature
Setpoint temperature
Heating
Cooling
disabled
enabled
offset
no offset
Relay on,
Relay off
is displayed as long
b is pressed
8
9
10
11
12
13
14
15
16
The device automatically determines the time when the heating process must begin in order to reach the required room
temperature within the set time.
Setting: menu A , position 1, see 6.1
The control calculates the pre-heating time from the time of
the last heating-up based on the current temperature difference (see notes a, b).
The Optimum Start applies only to the heating-up stage. The
device is switched off (in the lower temperature direction) at
the programmed moment.
For PWM:
During the heating-up stage, 100% heat is required.
Immediately before reaching the setpoint temperature, the
control changes to proportional heat demand.
For ON/OFF control:
100% heat is supplied until the setpoint temperature is reached. After that, heating is switched off.
9. Common Data
Ordering name
EDP Number
Operating voltage
6.16 Display the symbol U
It can be selected if the symbol is displayed or not.
In mode heating, the symbol U shows the state of the relay.
If “control action” = PWM, the symbol may change each 10
Min.
To select: choose menu j position 2 see 6.1
Battery life expectancy
Transmission frequency
Radio permits
Aerial
Additional Antenna
Transmission interval
6.8 Valve protection
The valve protection function prevents the valve from sticking (due to deposits of particles), for example during summertime. Such function will be enabled every day at 10.00
a.m. The valve will be turned on for ~3 min. (heating) or 7
min. (cooling). This function is active also during the normal
heating operation. This function should be switched off if
electric heating is used.
Setting: menu k, position 4, see 6.1
control value
continuously off
Master Reset:
To reset everything to the initial state, carry out an operating
mode reset first and then an erase procedure.
Reset:
When unexplained results occur, the reset key should be
pressed. All data is maintained, except for the time and day
of the week.
To activate Reset:
Using a pointed object press the button in the hole between
the x keys. After Reset, you must enter the time and day
again.
Erase :
Used to restore the factory-set switching time and temperature settings.
The following settings are affected:
– Operation hours counter = 0
– Switching times and temperatures = standard values
– time, day = 0:00, Mon
– Optimum Start parameters = standard values
6.17 Learn mode
This function allows making the radio connection between
the transmitter and the receiver (for the relevant details,
refer to the description of the receiver).
1. Setting through menu l see 6.1
- position 1 = 1: with automatic address
TheINSTAT 868-r auto assigns the address
- position 1 = 2: with manual address input
The address can be manually entered
2. Press b to confirm.
The display will show the icon z.
Learn Mode is enabled now.
3. Only if the radio connection has been made successfully
(see receiver)
4. Press b to exit.
Only one transmitter at a time can be in Learn mode.
Typical range
Setpoint temperature
setting
Actual temperature
display range
Operating temperature
Storage temperature
Control algorithm
Output signal
PWM cycle duration
Holiday function
Timer
Display
Setting the address manually
When selecting position 1 = 2, the last entered address will
be displayed
Press Z or a to set the desired address, digit by digit, and
press b to confirm each digit.
After the last digit has been entered the z icon will appear on the display.
Carry out steps 3 and 4 above.
Display size
Digit size
INSTAT 868-r
INSTAT 868-rd
0536 20…
0536 25…
Batteries: 2 LR6-size
alkaline batteries, 1.5V each,
total=3V
~5 years
868,95 MHz
see below
internal
ZA 193 771
< 10 Minutes
(data are sent repeatedly)
100 m in fee air or
1 ceilings or 3 walls
5...40°C, in steps of 0.5 K
0 … 60°C, in steps of 0.1 K
0…40°C
–20…60°C
Fuzzy (similar to PID) / ON/OFF
Pulse-width-modulated (PWM)/
ON/OFF
~10 min (sum of on and
off time of Pulse-Width
Modulation PWM)
5...40°C, in 0.5° steps
settable 1 to199 days
LCD display with simultaneous
indication of: Time, Room
Temperature, Day, Operating
Mode, Time Zone and
Temperature Zone
41 x 32 mm (b x h)
12 mm for Temperature,
9 mm for Time
Clock
Display mode
24-hour, 1-minute steps
Precision
<10 min/year (at 20°C),
RF clock:
atomic precision (DCF 77)
minimum swtich. time 10 minutes
Temperature sensor
NTC (built-in),
Operation hours counter 1 to 9999 hours
Housing protection
rating
IP 40
Device protection class III
Humidity class
keep away from dew
Weight (without batteries) ~100g
Choose a unique number as address (room number) that is
not repeated throughout the whole building.
Write this number on the rating plate located on the back of
the control.
7 Installation
Mounting
The control should be mounted in a location of the room
that:
• is readily accessible for operation purposes
• is free from curtains, cabinets, shelves, etc.
• allows free air circulation
• is not subject to direct sun radiation
• is not subject to air currents (for example window/door
opening)
• is not directly affected by heat sources
• is not on an external wall
• is located at ~1.5 m above the ground
• is not close to e.g. radio, television, or other radio equipment
10 Dimensions
To fix it, use the wall support and secure it on the wall by
using either screws or adhesive tape. If you use adhesive tape,
make sure the wall surface is smooth and free from dust and
grease.
It is not possible to open the control.
8 Start-up
1.
2.
3.
4.
Install the control, see 7.
Remove the covering strip of the batteries
Set the time, see 2.2 (for controls with RF clock see 2.10)
Make the radio connection, see 6.17 (see also the instructions of the receiver)
5. Set the remaining features, see Table III.
6. Customise the programme (if required) see 2.
Wall support
The control is now ready to operate
It will work according to the standard programme P1 see table II.
Note:
a) The room temperature will be displayed after about 1
minute.
The exact room temperature is displayed after ~half an
hour.
b) For controls equipped with an RF clock, see 2.10.
Note :
The Instat 868 (868 MHz) could not be used with the
receivers of the INSTAT 6 (433 MHz) series.
A radio authorisation is available for the following countries: Germany, France, England, Belgium, Holland,
Luxembourg, Norway, Denmark, Sweden, Switzerland,
Finland, Spain, Italy, Austria, Ireland, Iceland, Portugal.
Attention:
A completely noise-free operation of the radio communication cannot always be guaranteed at the present
state of the art. We therefore recommend checking the
proper operation of the device in the specific installation location.
Application examples for INSTAT 868-r
Four independent heating
circuits are controlled by
4 thermostats and one
INSTAT 868 a4 or -a6
receiver.
Heating distributor
Thermostat
Thermostat
230 V
Thermostat
Receiver
Thermostat
To activate the erase function:
1. Using a pointed object press the button in the hole between the x keys, and the b button simultaneously,
2. release x and after ~2 seconds release b.
Now you must enter the time and day again
Operating mode reset:
Warning:
This command will reset the "Control mode" feature to
PWM. If required, set it to On/Off control.
All functions described in Table III - Features, are reset to the
pre set values
To activate this function:
1. Press Y, Z and x simultaneously
2. Release x first and, after ~2 seconds the Y and Z buttons,
Now, all icons on the display are active.
3. Press x.
230 V
Two separate
INSTAT 868-a1 receivers
are controlled by one
thermostat.
Thermostat
Receiver
Receiver
2
3
0
V
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