First ROTOTERM MR-TR plus User manual

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ROTOTERM MR-TR “plus” is weather
compensating central heating controller. It is
designed to regulate the radiator or underoor
heating. The controller is 3-point (PID) temperature
controller of heating water, which works as a
function of external temperature, and in conjunction
with the room correction unit, allows remote room
temperature adjustment.
The controller is built in microprocessor technology
and meets the latest quality standards. It offers
a wide variety of programming options, allowing
optimal controller settings for the selected object.
Features:
LED’s indicate control output status•
Output for controlling motor actuator for mixing•
valves (UNI 3P, MV120) and circulation pump
Pump and valve exercise (every 72h for 30s)•
which helps prevent sticking during long periods of
inactivity
Service switch to assist installer on start-up and•
technician during service
Sensors fault status on digital display•
Factory set default parameters•
Digital setting of all parameters•
Temperature enquiry (outer, boiler, underoor, •
mixed ow) on digital display
Code Description
21128
ROTOTERM MR-TR plus
(Heating controller MR-TR, Room unit AS 2000-E, sensors AF, BSVF, BF,
mounting kit)
21131
ROTOTERM MR-TR
(Heating controller MR-TR, sensors AF, BSVF, BF, mounting kit)
DATA SHEET
Micro-processor heating controller
for controlling radiator or under oor heating
ROTOTERM MR-TR
Characteristics:
Supply voltage: 230VAC, 50Hz•
Power consumption: max.4VA•
Power supply of users: 1(1)A, 230VAC, 50Hz•
Room temperature setting range: 5 - 25°C•
Heat curve ratio adjustment: 0,1 - 2°C•
Heat curve parallel shift adjustment: +/- 10°C•
Room unit inuence (AS/VF): 1 - 15•
Max. mixed ow temperature setting range: •
30-85°C
Boiler condensation limit adjustment: 30-75°C•
(radiator heating)
Underoor temperature limit adjustment: 15-35°C •
(underoor heating)
Circulation pump switching-off adjustment:•
20-45°C
Sensors type: KTY 81-210•
Programmable Room unit AS 2000-E
Room unit AS 2000-E is designed for daily and•
weekly mode of operation and for setting two
temperature levels (day - night).
The possibility of correction room temperature or•
mixed ow temperature (function is chosen on the
right side of the unit )
Control of actual hour, day and heating status•
Room temperature display•
Kit weight: ROTOTERM MR-TR plus 1,1kg•
ROTOTERM MR-TR 0,9kg
ROTOTERM MR-TR plus
ROTOTERM MR-TR

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The ROTOTERM MR-TR heating controller is a 3-port PID
controller used for under oor or radiator heating. Via its outputs
it controls the motor actuator for mixing valve and circulation
pump.
Basically it controls the temperature of mixed ow in dependence
on exterior temperature, deviation of the required and actual
room temperature and parameters set.
The controller operates according to nonlinear heating curves,
which enables correct heating even with higher exterior
temperatures. Setting of the curve ratio is possible also from
0,1 do 2 in resolution per 0,1 (20 curves). Parallel shift of the
curve enable settings within the limits from -10 to +10, which
means, that the starting points of the curves can be moved by
+/- 10°C.
By means of the three digit display and the three keys it is possible
to set all the parameters and to control all the temperatures. The
display also shows all errors of the sensors (disconnection “Er1”
and short circuit “Er2”).
The design of controller allows also operation without room unit
AS2000-E - operating regarding selected heating curve. This is
especially useful for under oor heating, where night reductions
do not present any advantage, due to the system inertia.
When the controller switches over to under oor operating mode,
it automatically assumes individual limits: temperature of the
mixed ow is 50°C, setting of heating curve ratio is possible
only from 0.1 - 1 and inuence of the room units is possible only
between 0 and 5. The under oor sensor of the controller prevents
the under oor to get too hot, thus prevents the unpleasant feeling
of warmth in your feet.
When used with radiator version, the sensor is located into the
boiler in order to prevent condensation or overheating of the
boiler. In case the boiler temperature falls bellow the condensing
temperature, the controller momentarily chokes the mixing
valve, thus reducing the consumption and assuring quick and
easy heating of the boiler to the required temperature. If for
any reasons the temperature of the boiler exceeds 95°C, the
controller opens the mixing valve, speeds up the consumption
and prevents overheating of the boiler and cut-off of the thermal
breaker.
The controller automatically activates the pump, immediately
when heating is required and switches it off when the heating
water line is cooled down bellow the set temperature. This
temperature can be adjusted within the range of 20°C to 45°C.
When switched on, the display of the ROTOTERM MR-TR
controller illuminates and shows the tests of sensor, pump and
mixing valve operation. After some 5 seconds the controller starts
with normal operation.
TECHNICAL DATA
Supply voltage...........................................................................................................................................................230V , 50Hz
Power consumption............................................................................................................................................................max. 4VA
Relay outputs...................................................................................................................................................1(1)A, 230V , 50Hz
Power consumption ....................................................................................................................................................................4VA
Humidity:............................................................................................................................................. 5% - 70% (without condense)
Storage temperature: .........................................................................................................................................................0°C-70°C
Mounting: .........................................................................................................................................................................on the wall
Recommended cable use:..............................................................................................................sensor cable: J-Y (St) 1X 2X0,6
.............................................................................................................................................Pump, actuator cable: H03VV-F 3x0,75
Sensor type ................................................................................................................................................................PTC KTY 10-6
Temperature measuring range ....................................................................................................................................-40°C...160°C
Room temperature setting................................................................................................................................................5°C...25°C
Program settings:
Heating curve ratio setting....................................................................................................................................................... 0,1...2
Parallel shift..........................................................................................................................................................................+/- 10°C
Room unit inuence.................................................................................................................................................................. 1...15
Controller type ............................................................................................................................................................................. PID
Floor temperature limit....................................................................................................................................................15°C...35°C
Summer periodic run of pump and mixing valve ........................................................................................... every 72 hours for 30s
Connection mode ..........................................................................................................................................................terminal pins
Parameters selection mode .......................................................................................................................................................keys
Parameters...................................................................................................................................................... factory built-in values
Dimension of sensors:
l
l=1,5m sensor BSF1, PVC (grey cable)
l=2m sensor KF, silicon (red cable)
CONTROLLER ROTOTERM MR-TR OPERATION

ROTOTERM MR-TR
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The ROTOTERM MR-TR heating controller is a 3-port PID
controller used for under oor or radiator heating. Via its outputs
it controls the motor actuator for mixing valve and circulation
pump.
Basically it controls the temperature of mixed ow in dependence
on exterior temperature, deviation of the required and actual
room temperature and parameters set.
The controller operates according to nonlinear heating curves,
which enables correct heating even with higher exterior
temperatures. Setting of the curve ratio is possible also from
0,1 do 2 in resolution per 0,1 (20 curves). Parallel shift of the
curve enable settings within the limits from -10 to +10, which
means, that the starting points of the curves can be moved by
+/- 10°C.
By means of the three digit display and the three keys it is possible
to set all the parameters and to control all the temperatures. The
display also shows all errors of the sensors (disconnection “Er1”
and short circuit “Er2”).
The design of controller allows also operation without room unit
AS2000-E - operating regarding selected heating curve. This is
especially useful for under oor heating, where night reductions
do not present any advantage, due to the system inertia.
When the controller switches over to under oor operating mode,
it automatically assumes individual limits: temperature of the
mixed ow is 50°C, setting of heating curve ratio is possible
only from 0.1 - 1 and inuence of the room units is possible only
between 0 and 5. The under oor sensor of the controller prevents
the under oor to get too hot, thus prevents the unpleasant feeling
of warmth in your feet.
When used with radiator version, the sensor is located into the
boiler in order to prevent condensation or overheating of the
boiler. In case the boiler temperature falls bellow the condensing
temperature, the controller momentarily chokes the mixing
valve, thus reducing the consumption and assuring quick and
easy heating of the boiler to the required temperature. If for
any reasons the temperature of the boiler exceeds 95°C, the
controller opens the mixing valve, speeds up the consumption
and prevents overheating of the boiler and cut-off of the thermal
breaker.
The controller automatically activates the pump, immediately
when heating is required and switches it off when the heating
water line is cooled down bellow the set temperature. This
temperature can be adjusted within the range of 20°C to 45°C.
When switched on, the display of the ROTOTERM MR-TR
controller illuminates and shows the tests of sensor, pump and
mixing valve operation. After some 5 seconds the controller starts
with normal operation.
INSTALLATION OF THE MR-TR CONTROLLER
The controller includes power supply cable and plug for connection to power supply network. We recommend connection to
earthed socket, protected with separate fuse. The controller can be mounted to the wall, provided that there is no danger of water
overow or other liquid and at least 1 m away from the sources of electric in ter ference (pumps, electric motors, phone exchanges,
cell phones…).
TEMPLATE FOR HOLES FOR EASIER INSTALLATION OF THE MR-TR CONTROLLER TO THE WALL.
Controller ROTOTERM MR-TR - OPERATION

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ELECTRICAL INSTALLATION OF THE CONTROLLER
Programming and regulating automatics of the ROTOTERM MR-TR is furnished with standard plug, protective conduit for connection
to power supply network 230V, 50 Hz. Immediately after connection, it can be operated, set and programmed. Since the controller
do not include a fuse, one should be installed on the plug.
WARNING
Before obtaining access to terminals, all supply circuit must be disconnected!
Earthing conduits shall be
connected into separate
terminal pins, on the right
side of the connecting
pins.
PIN CONNECTION
1,2 Put side air sensor AF 2000
3,4 Mixed ow sensor VF2000 (grey colour)
5,6 Room unit AS2000 (5-9, 6-9)
7,8 Floor sensor (BF2000) or boiler sensor (KF2000) - red colour
9 N - Neutral conduit
10 L - Phase for switching on the pump 1(1)A, 230V , 50Hz
11 N -Neutral conduit for pump
12 L - Closing the valve 1(1)A, 230V , 50Hz
13 N -Neutral conduit
14 L - Opening the valve 1(1)A, 230V , 50Hz
15 L - Phase connection to power supply network 230V , 50Hz
16 N - Neutral conduit, connection to power supply network 230V , 50Hz
To completely switch off the operation of the controller you need to disconnect it from
the power supply network !
When connecting the wires in
the terminal make sure that the
insulated part of wire is in the
housing part of the terminal!
CABLE GLANDS MOUNTING

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CONNECTION OF THE REGULATION MOTOR
After the regulation motor is mounted to the mixing valve (for mounting see chapter “Instructions for mounting the
regulation motor”), connect the motor to the terminal pins in the connection box of the controller. Should the closing
direction be changed, change the connecting wires on terminal pins 12 and 14.
We recommend the use of our regulation motors:
grey black grey black
MV 120/09E MV 120/210
MV 120/360
MV 120..540 (EUROMIX)
CONNECTING THE CIRCULATION PUMP
The controller controls the circulation pump whenever there is a signal for heating and shuts it off as soon as the
heating water line is cooled down bellow the set temperature (see “Setting pump switch off” - parameter [c]). It shall
be connected to terminal pins 10 and 11.
Recommendation:
As an extra precaution for
under oor heating we recommend use
of regulation motor series MV 120/210 for
mixing valves up to DN 40 or series MV
120/360 for larger mixing valves. Advantage
of these two regulation motors is, that it can
be set an angle of opening of the mixing
valve. This way the maximum temperature
of heating water coming into under oor
heating system can be limited.
Recommendation:
For under oor heating we recommend in stallation of an extra safety bimetal thermostat
on the mixed ow line. The ther mo stat shall be set to some 50°C and shall switch off the
circulation pump after the temperature in the heating water line exceeds 50°C. The use of
thermostat is recommended as precaution in order to prevent hot water to breaking into
under oor heating system.
bimetal
thermostat
SENSOR MOUNTING
All the connecting cables of temperature sensors and indoor units can be extended, but you have to some basic rules to
consider:
1. Sensors cables do not lead in parallel with the mains voltage cables (220V/50Hz). There can appears current stroke, which
cause voltage induction and it can damage the controller or sensors. If there is no other way then parallel minimum distance is 10cm
between them. It is allowed to guide the sensor’s cable perpendicular crossing voltage cables.
2. If the distances between sensors and controller are larger over 15 meter it is recommended the installation of VDR resistance
of 25V. It is installed by soldering at the point where the original sensor’s wire extended to the other cable wire (see Figure 2).
3. Extending the sensor cable is recommended by shielded telephone, shielded data or any other for that purpose cable cross section
0.5 mm ² or more (for example JY (St) 1X 2X0,6). These cables prevent the transmission of interference or noise from the environment
that would cause improper operation or to reset the controller. Most often is a shield of aluminium foil and extra noninsulated - shield
wire. Connection should be undertaken in a manner described below (see Figure 1 and the recommendation of experts).
4. By installation is necessary to provide mechanical protection of sensors and wires, and protection against atmospheric
inuences.
Recommendation of experts:
During the laying of cables is needed to
decide the path-line, which is not near the
high voltage or high frequency electrical
sources (power cables, cables to various
appliances:pump,motoractuators,boiler,...).
Common ground at one point is first
condition to operate without interference. It is
recommended earthing of protective shield
cable to the power connection, which is in
the controller (the ground terminal) or in the
control, distribution cabinet. The other end of
the cable connected to the sensor should be
equipped in accordance with the procedure
in Figure 1 and these instructions.
On the side where is extended the original sensor, removable part of the insulation in the shielded wire turn back to connect cable
shield. All together squeeze good, and by wrapping the insulating tape, taking care of protection shield wires do not extend the
scope of the connection of two signal wires. Each protruding wire can become a source of new interference, that why it is necessary
to make this connection especially with care.
In this way it is assured the best possible protection of sensors, and save yourself a bunch of nerves and the spend time in case
of any errors due to disturbances.
Figure: 2
VDR resistor
Thermo
shrinkable tube
Sensor’s
cable
Extending
cable
Protection wire
Signal wires
Signal wires
Protection wire turn
back to cable shield and
insulate them both
Insulated band
Figure: 1

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MOUNTING OF SENSORS
MOUNTING OF OUTSIDE AIR SENSOR AF 2000
Fix the sensor to the north side wall (or shady side) of the building at least 1.5 m
from the un der oor and from all possible heat sources (win dow, door, ventilating
channels, stacks, direct sunlight, above the windows…)
Connect the sensor cable to the terminal pins 1 and 2 in the automatics connection
box.
MOUNTING OF CLAMP-ON SENSOR VF 2000 - to the mixed ow line
Mount the sensor at least 20 cm above the mixing valve before or after the pump, as close-t
sensor on the mixed ow hose under the iso lation or as immersion sensor in the cap.
Be careful not to let the sensor cable to touch the hot pipes (use proper isolation). Provide good
contact with the heating water line and apply thermal isolation. Connect it to terminal pins 3 and
4 in the controller connection box.
MOUNTING OF FLOOR SENSOR VF 2000 - for under oor heating only
Mount the sensor into exible hose as close to the com po sition under oor surface as possible,
somewhere in the middle of the feeding and returning conduit.
Do not place it under thick carpet or furniture.
Be careful not to let the sensor cable to touch the hot pipes (use proper isolation) and apply
thermal isolation. Connect it to terminal pins 7 and 8 in the controller connection box.
If you don’t install the sensor, the terminal pins 7 and 8 should be connected to 2 kW resistance and parameter [t] set to value 35
(see setting of tem pera ture limits for under oor - parameter [t]). In that case you don’t have protection against oor overheating.
MOUNTING OF BOILER SENSOR KF 2000 - for radiator heating only
Mount the sensor into the cap next to the other boiler sensors. In case of 4-way mixing valve it
can also be mounted as close-t sensor to the heating water line after the furnace out put.
If you don’t install the sensor, the terminal pins 7 and 8 should be connected to 2,9k and
parameter [t] set to value 30 (see setting of temperature limits for under oor - pa ram eter [t]).
In that case you don’t have protection against boiler condensation.
Use the enclosed bolts and mount the room unit to the wall. The unit shall be xed at least 1.5 m above the oor and at least 1m
away from all heating sources (radiator, sun inuences, re places, ...).
ASSEMBLY OF ROOM UNIT AS 2000-E (ROTOTERM MR-TR “plus” only)
If the room unit AS 2000-E is used as remote temperature corrector (correction of heating curve) is installation is not important
because the unit operates independently of the ambient temperature.
This happens in cases where in the
existing space are used additional
sources of heating - replace. In this case
side switch for selecting operation (see
description of the room unit AS2000-E)
shifted to the OFF position (factory set
to ON). This will enable heating of other
room in the building by heating curve.
WARNING!
In this position, a switch (5) in position
“ ” does not provide protection
against frost (room temperature
8-10°C), but the function of full-OFF
operation - unconditionally closes the
mixing valve.
When an additional heating source is no longer active, switch (14) moves back to ON, which provides us with a constant temperature
in the room.
Some examples of incorrect installation
Heating
source
Chimney
Gas
boiler

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TABLE OF SENSOR RESISTANCE
In order to test the automatics we can
simulate the sensors with resistance.
Values are selected from the table bellow.
Simulation example of AF sensor:
- for 0°C terminal pins 1 and 2 are
connected to resistance 1645W
(to the nearest 1500W+ 150W)
ELECTRICAL CONNECTION
Connection between the room unit and the controller is of low voltage type (two-wire 2 x 0.5 mm2). When longer
wires are required or where stronger interference is to be expected, we recommend use of shielded cable.
DO NOT CONNECT ROOM UNIT AS 2000-E TO POWER SUPPLY
NETWORK OR ANY OTHER VOLTAGE SOURCE!
Room unit is supplied with its own power supply source (battery cells 2x 1.5V LR06), which need to be replaced
every two years!
Sensor cables shall not be placed parallel to live power supply cables, as in case of electric shock there is danger of induced
current which can damage the controller or room unit. In case that power supply cable and sensor cable are parallel, the minimum
distance between them shall be 10 cm. It is allowed however the sensor cable to transversely cross the supply cable.
Sensor resistance table with dependence on temperature - type KTY10-6
EXAMPLES OF MAIN CONNECTIONS
Recommendation:
For under oor heating we recommend in stallation of an extra
safety bimetal thermostat on the mixed ow line. The ther mo stat
shall be set to some 50°C and shall switch off the circulation pump
after the temperature in the heating water line exceeds 50°C.
The use of thermostat is recommended as precaution in order to
prevent hot wa ter to breaking into under oor heating system.
Under oor heating
bimetal
thermostat
Radiator heating

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Data display
During complete operating period the display shows temperature of VF mixed ow.
When T1 (∆AS) key is pressed
the display shows the difference between actual temperature of mixed ow (Tactual ) and temperature of mixed ow acc. to preset
curve (Tper curve ) in °C.
∆AS= (Tactual ) - (Tper curve )
When value “∆AS" is negative it indicates that the temperature in the room is too high and controller decreases the temperature of
heating water line. When value "∆AS" is positive it indicates that the temperature in the room is too low and controller increases the
temperature of heating water line. The parameter E, selected from displayed value AS, can be used for calculation of the difference
(∆Troom ) between actual room temperature and required room temperature.
When T2 (BF/KF) key is pressed
the display shows oor temperature or temperature in the boiler.
When T3 (AF) key is pressed
the display shows outside temperature.
CONTROLLER CONTROL PANEL
1LED indicator mixing valve
closing
2LED indicator pump operation
3LED indicator mixing valve
opening
4Display
5 Selector switch for operating
mode selection
6Key T1 (E)
7Key T2 ( )
8Key T3 ( )
Selector switch for operating mode selection
1Permanently closed valve, pump switched off.
2Mixing valve stopped in current position, pump operates
continuously (in case of failure provides for partial heating and
offers the possibility of manual control of mixing valve).
3Controller functions according to pre-set parameters.
4Permanently opened mixing valve, pump operates.
The selector switch is meant for service reasons - for only qualied persons

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Controller parameters
ROTOTERM MR-TR microprocessor controller of radiator and under oor type heating provides for setting of the following
parameters:
1. CONTROLLER TYPE: [rAd] or [tAL] range selection: or
[rAd] - radiator heating system
[tAL] - under oor heating system
Select the type of controller in order to dene the type of heating system and sensor function (BF/KF).
You dene whether BF/KF sensor, connected to terminal pins 7 and 8, is used as boiler or under oor type sensor. If under oor type
heating is selected the BF/KF sensor functions as oor sensor and if radiator heating is selected it functions as boiler sensor.
2. HEATING CURVE RATIO: [n] range selection: or
The ratio of heating curve denes the temperature of mixed ow at certain out-
side temperature.
Considering the type of heating, the controller has the following limits:
Under oor heating: from 0,1 to 1
(factory setting (0,5).
Radiator heating: from 0,1 to 2
(factory setting1,0).
3. CURVE PARALLEL SHIFT: [P] range selection: or
Parallel shift of a curve enables displacement of heating curve for +/- 10°C
(factory setting 0).
When heating curve ratio is adequate (in case deviation of required tempera-
ture is the same in cold and transition periods), it can be modied by means of
heating curve ascent or descent.
Range of parallel curve shift for heating curve 1.0
SELECTION OF HEATING CURVE
Heating curves represent an interconnection between outside temperature and temperature of heating water. In short: the lower
is outside temperature, the higher is the temperature of mixed ow and room temperature depends on the temperature of mixed
ow.
The selection of optimum curve depends on several factors: heat insulation of a building, heating type, heating system inertia, etc.
The selection of optimum curve enables the highest fuel savings. The consequence of wrong selection of heating curve slope is
deviation from required room temperature (e.g.: when it is cold outside, the room is warm enough but in transition periods room
temperature is too low).
For well-insulated house (radiator type heating), for example, the slope of heating curve is 1.0 and for poorly insulated house it
can be 1.6.
For under oor type heating it is about 0.5.
PRACTICAL TIPS FOR CURVE SELECTION
The slope of heating curve is selected according to experiences considering insulation of the building, heating type, system inertia,
etc.
Taking into account that optimum selection of heating curve is not readily achieved, it should afterwards be modied.
1st example
Room temperature in transition period corresponds but is too low in cold periods.
In this case the slope of heating curve [n] should be set to higher value.

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2nd example
Room temperature in transition period corresponds but is too high in cold periods.
In this case the slope of heating curve [n] should be set to lower value.
transition
period
cold
period
4. TEMPERATURE LIMIT OF MIXED FLOW: [o] from: to
Temperature limit of mixed ow is used in systems where smaller areas of under oor are heated with pipes of radiator heating
(bathrooms, toilet rooms). To prevent damages of under oor systems or under oor linings (ceramic tiles) the temperature in pipes
should be limited under certain temperature value (50°C). Such limit value, used in radiator heating systems, prevents fast rise of
temperature of heating units during very cold mornings; consequently the time required to reach the desired room temperature is
extended. Therefore in this case it is recommended to pre-set the time for morning start up of heating
WARNING: If the temperature of heating water line for radiator heating is limited to too low value it is possible that very low morning
temperatures prevent reaching of required room temperature.
Considering the type of heating the controller enables the following settings:
Under oor heating: from 30°C to 50°C (factory setting 50).
Radiator heating: from 30°C to 85°C (factory setting 80).
5.PUMP SWITCHING OFF: [c] from: to
This setting species the temperature at which the controller switches off the pump, when mixing valve is already closed. This
function enables that all heating units are uniformly cooled down after termination of higher operating mode.
Factory settings of deactivation: radiator heating: 30°C, under oor heating: 25°C.
6. INFLUENCE OF ROOM UNIT: [E] from: to
This setting species the degree of increase or decrease of the temperature of heating water line if room temperature changes for
1°C. Higher is the inertia of the system, lower should be the inuence of room unit and vice versa.
Under oor heating: the inuence of room temperature can be set between 0 and 5 (factory setting 3); radiator heating: between
0 and 15 (factory setting 8).
When MR-TR controller is used solely as temperature controller of mixed ow with reference to out side temperature (without room
unit), the terminal pins 5 and 6 remain free.
IN THIS CASE THE INFLUENCE OF ROOM UNIT MUST BE SET TO 0!
3rd example
Room temperature in transition period too low but in cold period corresponds.
4th example
Room temperature in transition period too high but in cold period it corresponds.
1st step
Increase parallel shift of curve [P] to higher value.
2nd step
Set ratio of heating curve [n] to lower value.
1st step
Increase parallel shift of
curve [P] to lower value.
2nd step
Set ratio of heating curve
[n] to higher value. transition
period
cold
period
transition
period
cold
period
transition
period
cold
period
transition
period
cold
period

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7. PARAMETER: [t]
Parameter [t] has two functions and depends on the type of selected controller (radiator of under oor type heating).
Radiator heating from: to
7.1 TEMPERATURE OF BOILER CONDENSE POINT: [t]
When boiler has more users (mixing valves with pumps) or the boiler is under-dimensioned, condense frequently appear during
morning start-ups in boiler and ues due to too high consumption, especially at radiator heating. For this reason the controller is
equipped with KF boiler sensor, which reads boiler temperature. If the temperature of the boiler decreases under the set value, the
controller begins closing the mixing valve and enables the burner to quickly heat the boiler to set temperature. The temperature of
condense point can be set between 30°C and 75°C (factory set to 65).
The very same KF sensor protects the boiler against overheating. It opens the mixing valve and activates the pump, if the temperature
of boiler exceeds 95°C. In this way it prevents deactivation of thermal fuse in boiler regulation unit.
If the sensor is not connected a resistance should be used instead of it - see chapter: Installation of boiler sensor!
Under oor heating from: to
7.2 UNDER FLOOR TEMPERATURE LIMIT: [t]
When MR-TR is used as under oor controller, maximum oor temperature can be set. Floor temperature is read by means of BF
sensor installed in screed close to oor surface. This sensor has a function of protection.
The temperature of condense point is set between 15°C and 35°C (factory set to 29).
If the sensor is not connected a resistance should be used instead of it - see chapter Installation of boiler sensor!
CONTROLLER PARAMETER SETTING
Press MENU key to enter programme mode. The display shows parameter [n] and numeric value of ratio:
Programming is executed in three procedures. For easier understanding see the diagram on the following page.
First procedure: set the ratio of heating curve and parallel shift.
Second procedure: set the limit of mixed ow temperature, pump deactivation, in uence of room unit and limit of oor
temperature or boiler condense point.
Third procedure: set the type of controller (radiator/under oor type heating).
When you press MENU key you enter the rst procedure, where you can set the pa ram eter [n]. Change the value by pressing
arrow keys.
To set the parameters in the second procedure, rst press MENU key and afterwards keep pressing Ekey for 10 sec. until parameter
[o] is displayed, i.e. Limit of mixed ow tem pera ture.
To set the parameters in the third procedure, rst press MENU key and afterwards keep pressing Ekey for 20 sec. until parameter
[rAd] or [tAL] is displayed, i.e. Heating type.
When you enter the desired procedure you can change the parameter by pressing ( ) and ( ) keys. To move to the following
parameter shortly press Ekey.
When the last setting of the procedure is entered, press and keep pressing Ekey. The display shows P.r. Keep pressing the Ekey
(about 3 sec) until P.r. disappears.
If you do not perform above stated step, all entered parameters are lost. If you do not press a key for a longer period of time during
programming procedure, the controller leaves programming mode and returns to normal mode of operation.
When setting controller parameters for the rst time, rst set controller type [rAd] or [tAL] because when you change the
type of controller factory settings are loaded.
Setting example: CONTROLLER TYPE SETTING
2. [n] value is displayed.
Press Ekey for > 20 sec.
1. Press
MENU key.
3. After 10 sec. value [o] is displayed,
but keep pressing E key.
4. Value [rAd] or [tAL] is displayed.
Set controller type with
( ) and ( ) keys.
[rAd] - radiator heating
[tAL] - under oor heating
5. Keep pressing Ekey until P.r.
disappears and save set values.

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CONTROLLER PARAMETER SETTING
Controller room unit
The ROTOTERM MT-TR controller can be used connected with the following units:
1. Room unit AS 2000-E
Programmable room unit AS 2000-E with incorporated digital timer is an electronic time switch which is
used for programming daily and weekly mode of operation. Two temperature levels can be set - day time
and night time level. The design of the timer enables simple operation with keys as well as control of actual
hour, day and heating conditions in any time. Additionally it is equipped with room temperature display.
Room unit AS 2000-E has additional switch on the right side. It makes possible to choose two heating
regimes:
- temperature control of mixed ow dependents on exterior and internal room temperature (normal
operation)
- temperature control of mixed ow dependents on exterior temperature
2. Operation without room unit
When ROTOTERM MT-TR controller is used only as controller of mixed ow temperature with dependence to exterior temperature,
the room unit or the room corrector shall not be connected to terminal pins 5 and 6. In this case the inuence of the room unit must
be switched off - the parameter [E] shall be set to value 0 (see chapter: “Setting of room unit inuence parameter [E] ).

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DESCRIPTION OF CONTROL PANEL
NOTE:
LCD display room temperature does not affect the operation of automation. It is intended only to indicate the
temperature of the room in which it is installed!
ROOM UNIT AS 2000-E
(only in complet ROTOTERM MR-TR “plus”)
LEGEND :
1 - slide switch 1: working regime
1 ( - Non-stop working on higher
(comfort) temperature
AUTO - Automatic working according
set program
0 ( ) - Non-stop working on lower
(economic) temperature
2 - slide switch 2: time and program setting
- time and day setting
RUN - timer working
- program setting
3 - LCD display for exact time and state of program
4 - LCD display for room temperature
5 - Slide switch for choosing way of operating
- (Protection against freezing (8°C)
- Automatic working according set program
6 - Knob for setting higher (comfort) temperature
7 - Knob for setting lower (economic) temperature
8 - key for the temporarily manual override of program till
next program step
9 - key for setting minutes
10 - key for setting hours
11 - key for setting the day of the week
12 - key for input the program
13 - key RESET (deletes time and program)
14 - Slide switch for unit operation
ON - temperature control of mixed ow dependents on
exterior and internal room temperature (normal
operation)
OFF - temperature control of mixed ow dependents on
exterior temperature (based on heating curve)
LCD display
Day of the week
1-monday, 2-tuesday, ..., 7-sunday
High, comfort
temperature
Time: hours and minutes
Temperature correction
Room unit has the option of setting the two temperature levels, namely higher comfort level - ( ) and lower economical
level - ( ). Setting the higher and lower temperatures are independent of each other.
If you set the heating curve between 0.5 and 1 and you have average heating system, will control
knob to the higher temperature in the middle position provides room temperature between
20°C and 21°C.
Setting the lower temperature in the middle position provides room temperature between
17° and 18°C.
Rotate buttons to the left or right allows you to set the room temperature within about ±4°C (from
the starting position of the middle button - depends of parameter E).

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Heating regime selector switch
Room unit has additional switch (14) on the right side. It makes possible to choose two heating regimes:
1. ON - heating dependents on exterior and internal room temperature (normal operation).
With built-in temperature sensor it assures constant room temperature. With connection with controller
ROTOTERM MR-TR it corrects temperature of mixed ow.
Two temperature levels can be set - day time and night time level. The design of the timer enables
simple operation with keys as well as control of actual hour, day and heating conditions in any time.
Additionally it is equipped with room temperature display.
2. OFF - temperature control of mixed ow dependents only on exterior temperature
Room unit works independently of room temperature. This is suitably, when we have additional heating sources in
the room (replace, ...).
The temperature of mixed ow is dependents of heating curve. Room unit in this regime allows parallel shift of heating curve.
Two temperature shifts can be set - day time and night time level.The design of the timer enables simple operation with keys
aswell as control ofactual hour,day and heating conditionsin any time.Additionallyitis equipped with roomtemperature display.
Warning!
When is regime selector switch in position OFF, then slide switch for choosing way of operating (3) does not assure
protection against freezing, but it has function of stopping operation of controller. It closes the mixing valve.
Slide switch for choosing the way of operation
There are two operating modes:
- if the switch (14) in the ON position provides frost protection (room temperature 8° -10°C)
- if the switch (14) in the OFF position - heating is switched off (closes mixing valve. In this mode there is no
protection against frost!
- Automatic working according set program
BATTERY REPLACEMENT
IT IS RECOMMENDED TO REPLACE THE BATTERY CELLAT THE BEGINNING OF HEATING PERIOD
IN ORDER TO ATTAIN RELIABLE OPERATION OF ROOM UNIT!
Use screwdriver to separate AS 2000-E from wall console: press the screwdriver in the notch on bottom
part, lift it with hand and remove it.
AS 2000-E uses alkaline battery cell 2x LR06 1.5V.
In the unit are inserted two LR06 alkaline battery LR06 1,5 V. Pull out the spent cartridges and replace
them immediately with new ones (you have a few seconds for replacement to maintain set program).
AS 2000-E operates regardless the network conditions (during eventual current breakdowns programme
is not deleted) due to supply from batteries. Life time of batteries cell is about 2 years from the date of
installation of new one and it becomes worn out when the display becomes pale.
Use exclusively alkaline battery cells type LR 06 in order to prevent leakage and damages to electronic
circuit.
Do not put used batteries in your regular household rubbish. Take them to your local battery-
disposal point.
Do not throw this device away with your regular household waste.
You must take electronic equipment to a local tip to be disposed of in line with current
regulations.
Never try to recharge standard batteries as they may explode.
Do not take batteries apart or throw them into a re.
Do not short circuit batteries.

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TIME SETTINGS
NOTE:
When you rst set the time and program of room unit, we recommend that you delete all previous settings. To do so, press the
button <RESET>.
1. After <RESET> is pressed, the display ashes - it is ready for setting.
2. Setting time
To do so, to move the switch to position 2 ( ).
Adjust time by pressing key <h> (hour) and <m> (minutes). If you hold the button longer, the value (hours or minutes) changing
faster and faster.
3. Setting the day of the week
To set the day of the week, press key <1 ... 7> until the indicator is placed on the exact day (1 = Monday 2 = Tuesday 3 =
Wednesday, ...). Each time the key is pressed the indicator moves forward by one day.
To complete time setting move slide switch 2 in RUN position.
Program setting
1. Move the slide switch 2 in position for setting program .
There is 16 switch cycles available - 8 switch cycle to a higher and 8 switch cycle to lower temperature. Switch cycles are in
order from 1 to 16. All odd switch cycles (1, 3, 5, 7, 9, 11, 13 and 15) are for switching to a higher temperature, all the even
switch cycles (2, 4, 6, 8, 10, 12, 14 and 16) are for switching to a lower temperature. On the display appears symbol which
indicates switching to higher temperature.
2. First switching cycle for switching to higher temperature
On display appears symbol for rst setting.
3. Setting the time (hours and minutes) of the switching cycle
Set it with keys <h> (hour) in <m> (minute).
4. Setting the day of the week
You can set the day of switch cycle or group of days with key <1..7>.
The day of the week is obligatory to set for each cycle, otherwise the switching cycle is not implemented!
5. First switching cycle for switching to lower temperature
By pressing key < > it saves switching cycle 1 and moves to next switching cycle (2) - lower temperature
6. Setting the day of the week or group of days
Setting the day MUST be the same as previous switch cycle to a higher temperature. Set the day to switch to a lower
temperature, time (hours and minutes) and press < > to move to the next switch cycle.
7. Settings for all next switch cycles
Repeats the process - points 3, 4, 5 and 6)
8. END OF PROGRAM SETTINGS
Move slide switch 2 in RUN position, the slide switch 1 in the AUTO position. Room unit operates after the set program.
NOTE:
In case you do not need all the switch cycles, which allows the timer, leave the value . Pay attention to sequence of
effective entries (rst on , rst off, the second on , second off, ...).

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Program setting
Room unit AS2000-E does not have factory-installed the program and must be set initially or after RESET.
We recommend you to easily program settings, you enter your program into a table at the back of the manual.
There is 16 switch cycles which are set by pairs: the switch cycle to a higher level and switch cycle to the lower level.
Example of program settings:
- Monday - Friday: at 06:00 a higher temperature and at 22:00 the transition to the lower
- Saturday and Sunday: at 07:00 a higher temperature and at 23:00 the transition to the lower temperature
Parameters entered into the table:
switch
cycle
1 2 3 4 5 6 7 8
temp. level higher lower higher lower higher lower higher lower
day 1 2 3 4 5 6 7
time 06:00 22:00 07:00 23:00
1. Slide switch 2 ( ) set in to position .
2. The display shows:
3. Enter the program, as shown in the picture:
with key <P> switch to next switch cycle.
4. To end program setting move slide switch 2 ( )in position RUN.
Program overview
The program can be reviewed at any time to move slide switch 2 into the position .
The program initially displays the rst switch cycle. By pressing the key < > moving to the next switch cycle, etc..
Temporary heating regime change
Temporary change of regime is valid till next switch cycle.
When you’re in automatic mode (slide switch 2 in position AUTO) press < > to change the regime of heating from a higher to
a lower regime and vice versa. The display shows a symbol indicating that we manually change the regime of heating.
key key key
Program changing
Move slide switch 2 into the position . Press < > to put it on the program position and with keys <1 .. 7>, <h> and <m> can
change existing settings. Press < > to move to the next switch cycle. Once you have changed the program, move the slide switch
2 back to position AUTO - automatic mode.
Delete the switch cycle
Move slide switch 2 into the position . Press < > to put it on the switch cycle you want to delete.
Hold down the < > and simultaneously press the < > more than 2 seconds. The display value is deleted and when you
release buttons, the screen ashes .
If you press <RESET> delete all settings, including time and date.
Override program settings
If you do not want the heating regime running by inserted program, move the slide switch1 in position:
- 0 ( )... sustained in an economic setting temperature (lower temperature) regime
- 1 ( )... sustained in an comfort setting temperature (higher temperature) regime
Frost protection
Move slide switch 2 to position AUTO. Both buttons 5 and 6 turn to the left end position, the position of 5°C.

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Before calling service
Most frequent faults which appear during operation of automatic regulation unit and are consequence of
wrong settings or wrong connection.
Malfunctions, which are described in the table are all the result of incorrect installation and incorrect settings. You can remove them
and you do not need to call service technician.
If eventually a change of operating mode of automatic unit appears which is not common, rst check eventual faults of settings and
installation. See Instructions for MR-TR controller and check if connection between controller and AS 2000 room unit is correctly
performed.
Before starting up and if error occurs we recommend to rst check the following:
- is electric fuse in phase of automatic unit installed and if operates,
- is main switch ON,
- are all connections performed,
- is fuel in reservoir or inlet gas valve open,
- is heating really required - check outside temperature,
- is boiler temperature high enough regarding setting of boiler condense point.
If all above specied conditions are fullled and you haven nd the cause for fault, see the following table. In case you still can
not nd and eliminate the fault, call our authorised technician.
AS2000-E
Problem Solution
The display will appear EEE Slide switch 2 is moved to the position . Before setting the program is necessary
to set the correct time and date.
Timer is not running Slide switch is in position or . Move it in position AUTO.
Time ashes Time is not set.
The program is not running - move slide switch 2 to position AUTO
- program is not set. See the example of program settings.
- the program is incorrectly congured:
- for each switch cycle to a higher temperature, is followed
switch cycle to a lower temperature
- for each switch cycle must be set the day or group days
- make sure the time settings do not overlap
Display is beginning to fade The batteries are exhausted. We recommend changing batteries before the start of
each heating season (at least every 2 years).
ROTOTERM MR-TR
STATUS POSSIBLE FAULT REMEDY
At outside temp. +10°C the room is warm
enough, at temp. -10° it is too cold.
Heating curve set too low. Set the curve to higher value.
In room should be higher (day) temperature
but is too cold.
- Timer settings.
- Digital timer - overlapping of
switch cycles
- Check timer setting
Regulation motor does not rotate. - No supply from controller
- Faulty motor
- Too hard (blocked) mixing
valve.
- Check terminal pins 17, 18 and 19,
- Check mixing valve and its rigidity.
Regulation motor rotates, mixing valve
does not respond.
- Broken safety forks (only by
MV120/09E,...)
- Broken lever on handle.
- Replace safety forks on handle,
- replace handle.
- check handle end positions
Regulation motor does not stop in nal
positions.
- Valve handle displaced. - Check nal positions of the handle.
LED for valve opening ( ) is ON on
controller, mixing valve is fully open, hot
in the room
Interrupted
- outside sensor AF,
- mixed ow sensor VF,
- AS 2000 room unit .
Check
- resistance of AF,
- resistance of VF,
- room unit.
LED for valve closing ( )is ON on controller,
mixing valve is closed, too cold in the room
Short circuited
- outside air sensor AF
- AS 2000 room unit
- sensor VF
- under oor sensor BF
- slide switch in position.
Check
- resistance of AF, VF and BF
- supply from AF, VF, BF and room unit
- set selector switch 5 to
position .

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STATUS POSSIBLE FAULT REMEDY
LED for valve closing ( ) is ON on
controller, mixing valve is opened, heating
water line is hot
- Motor MV 120/… rotation direction is
inverted regarding mixing valve.
Check motor rotation direction left and
right.
Temperature in the room is always the
same regardless of program
Slide switch 1 is in position
1 ( ) or 0 ( )
Set slide switch 1 to position AUTO
Too cold in the room. - Slide switch 5 in position
- Terminal pins 9 and 10 on room unit is
inverted
- Knobs for temperature setting are set to
low
- set selector switch 5 to
position .
- check connection of room unit
AS2000-E
- set knobs (5 and 6) to higher level
At timer status “ ”is cold in the room,
at status “ “ is warmer.
- Terminal pins 9 and 10 on room unit is
inverted
- check connection of room unit
AS2000-E
If T2 or T3 key is pressed, Er1 is
displayed.
- Sensor T2 or T3 interrupted
- Sensors out of function
- Check T2 and T3 sensors.
If T2 or T3 key is pressed, Er2 is
displayed.
- Sensor T2 or T3 short
circuited.
- Check T2 and T3 sensors.
The controller operating normally.
Sometimes it happens that the controller
repeatedly reset (off and on again).
In the system appears strong
electromagnetic interference. Controller
activates the built-in
protection against electromagnetic
pulses.
Contact central service
After the completion of maintenance work on the heating system check:
- el. connection of sensors, room unit, controller, actuator, pump
- Check operation of pumps, mixing valve actuator
- setting parameters on the room unit and the controller
- position of slide switches on the room unit and the controller
YOUR’S PROGRAM
Write down your's program
switch
cycle
12345678
temp. level higher lower higher lower higher lower higher lower
day
time
switch
cycle
9 10 11 12 13 14 15 16
temp. level higher lower higher lower higher lower higher lower
day
time
FIRŠT ROTOTEHNIKA
Radegunda 54, 3330 Mozirje, Slovenia
PE VELENJE
Koroška cesta 56a, 3320 VELENJE, Slovenija
tel. [phone], fax. [phone]
e-mail:info@rst.si, www.rst.si