Eberle NSTAT 868-rd User And Installation Manual - page 2
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 regu-
lations 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 sig-
nal.
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 upda-
te 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 cer-
tain 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 tem-
perature 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.
Troubleshooting:
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
z
Learn Mode was not terminated, see 6.16.
The Access protection is enabled, see 2.7
5.
4.
3.
2.
1.
6.
5.
4.
3.
2.
1.
4. Use
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
5. Features
• Fuzzy-Control,
with
PWM
output
(Pulse-Width-
Modulation)
• 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 assig-
ned 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 hea-
ting 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 minu-
tes 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 func-
tional check)
• Changeover between heating and cooling (for floor coo-
ling 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
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.
6.2 Performance Instat 868-r...
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 built-
in 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 appli-
cations all over Europe. Transmission safety is ensured by spe-
cial 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 acti-
ve every 10 minutes.
This device requires one of the INSTAT 868 a1, a4 or a6 RF-
receivers to control the user units.
The INSTAT 868-rd is equipped with a DCF77 radio-control-
led 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).
6switching times per day (all switching times are used)
When programming the switching times, the unavailable swit-
ching times will not be displayed.
To select it, choose menu
k , position 3
6.5 Control action
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 alre-
ady been reached.
The sum of Pulse and Pause times is constant and equal to 10
minutes.
If temperature difference is greater, the control is perma-
nently switched on or off, for example for temperature set-
back.
For ON/OFF control
setting see:
j position 1 = 1, see 6.1
If the setpoint temperature is not reached, the output swit-
ches 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).
6.6 PWM or ON/OFF Control
Pulse-Width-Modulation is the best procedure, since it allows
reaching a "quasi constant" behaviour of the controlled sys-
tem. PWM is specially suitable for electric heating, pump con-
trol 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.
6.7 Optimum Start
The device automatically determines the time when the hea-
ting 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 diffe-
rence (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 rea-
ched. After that, heating is switched off.
Setpoint
Temperature
Off
On
Pulse-Pause-Ratio
Behaviour of Puls-Pause-Ratio
according to Temperature
100%
continuously on
control value
0%
continuously off
Output signal
10 min 10 min
10 min 10 min
Setpoint
Temperature
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 Master-
Reset" or at the beginning of the heating period, the con-
trol still does not have any valid parameters. For this rea-
son, it is possible that during the first pre-heating stage the
setpoint temperature is not reached within the pro-
grammed time. Adjusting to the specific room conditions
can take several days
6.8 Valve protection
The valve protection function prevents the valve from sti-
cking (due to deposits of particles), for example during sum-
mertime. 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
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 dis-
play 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 tem-
perature 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 tempe-
rature 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.
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
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 pres-
sed.
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
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 tempera-
ture 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
To activate the erase function:
1. Using a pointed object press the button in the hole bet-
ween 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 but-
tons,
Now, all icons on the display are active.
3. Press
x.
III. Controller features
Feature
Menu
Position
Default
Value
Number
Fixed
k
1
Room
1 = Room
1
Programme
k
2
P1
1 = P1, 2 = P2
2
3 = P3, 4 = P4
5 = P5
Switching times
k
3
62 = 2 sw. times, 4= 4 sw. times
3
per day
6 = 6 sw. times
Valve protection
k
4
On
0 = Off
4
1 = On
Control
j
1
PWM
0 = PWM,
5
action
1 = On/Off
display
U
j
2
don't show
U
0 = dont show
U
6
1 = show
U
free
j
3,4
–
–
7
Optimum Start
A
1
On
0 = Off
8
1 = On
Room or Setpoint
A
2
Room temperature
0 = Room temperature
9
temp. display
1 = Setpoint temperature
Heating/Cooling
A
3
Heating
0 = Heating
10
change-over
1 = Cooling
b key as
A
4
disabled
0 = disabled
11
going out/ret. home
1 = enabled
Learn Mode
l
1
-
1 = automatic address
12
2 = manual address
free
l
2
13
Temperature
l
3
–
1 = offset
14
offset
0 = no offset
Relay on/off
l
4
–
1 = Relay on,
15
0 = Relay off
Operation hours
ß
–
is displayed as long
16
counter
b is pressed
Thermostat
Heating distributor
Receiver
230 V
Thermostat
Thermostat
Thermostat
Thermostat
Receiver
Receiver
230 V
2
3
0
V
Application examples for INSTAT 868-r
Four independent heating
circuits are controlled by
4 thermostats and one
INSTAT 868 a4 or -a6
receiver.
Two separate
INSTAT 868-a1 receivers
are controlled by one
thermostat.
A radio authorisation is available for the following coun-
tries: 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 commu-
nication cannot always be guaranteed at the present
state of the art. We therefore recommend checking the
proper operation of the device in the specific installati-
on location.
Master Reset:
To reset everything to the initial state, carry out an operating
mode reset first and then an erase procedure.
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
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.
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 appe-
ar on the display.
Carry out steps 3 and 4 above.
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 equip-
ment
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. Install the control, see 7.
2. Remove the covering strip of the batteries
3. Set the time, see 2.2 (for controls with RF clock see 2.10)
4. Make the radio connection, see 6.17 (see also the instruc-
tions of the receiver)
5. Set the remaining features, see Table III.
6. Customise the programme (if required) see 2.
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.
The control is now ready to operate
It will work according to the standard program-
me P1 see table II.
9. Common Data
Ordering name
INSTAT 868-r
INSTAT 868-rd
EDP Number
0536 20…
0536 25…
Operating voltage
Batteries: 2 LR6-size
alkaline batteries, 1.5V each,
total=3V
Battery life expectancy
~5 years
Transmission frequency
868,95 MHz
Radio permits
see below
Aerial
internal
Additional Antenna
ZA 193 771
Transmission interval
< 10 Minutes
(data are sent repeatedly)
Typical range
100 m in fee air or
1 ceilings or 3 walls
Setpoint temperature
setting
5...40°C, in steps of 0.5 K
Actual temperature
display range
0 … 60°C, in steps of 0.1 K
Operating temperature
0…40°C
Storage temperature
–20…60°C
Control algorithm
Fuzzy (similar to PID) / ON/OFF
Output signal
Pulse-width-modulated (PWM)/
ON/OFF
PWM cycle duration
~10 min (sum of on and
off time of Pulse-Width
Modulation PWM)
Holiday function
5...40°C, in 0.5° steps
Timer
settable 1 to199 days
Display
LCD display with simultaneous
indication of: Time, Room
Temperature, Day, Operating
Mode, Time Zone and
Temperature Zone
Display size
41 x 32 mm (b x h)
Digit size
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
10 Dimensions
Wall support
Position 1
Position 4
Position 3
Position 2
Enter the set values here
k
1
j
3
5
Note :
The Instat 868 (868 MHz) could not be used with the
receivers of the INSTAT 6 (433 MHz) series.