Valves, controls + systems

“i-Tronic” /“R-Tronic”Energy saving and improvement of the room climate

achieved with low investments

Product range

TEMP

ERATURE AIR HUMIDITY

C

ARBON

DIOXIDE

° C % ppm

Innovation + Quality

for an im

proved

energy effi

ciency …

2

The cheapesT

energy is

whaT you

don´ T use

arthur h. rosenfeld, physicist

Improvement of the room climateand energy savingachieved with low investmentsAn optimized indoor climate has a positiveeffect on our health and efficiency. The room climate is mainly influenced bythe temperature (C°), the relative humidity(RH, relative humidity in %) and the CO2content (in ppm, parts per million) in the air. This product range shows how acomfortable room climate with a reducedenergy consumption can be achieved withlow investment measures.

Contents 2 Improvement of the room climate and energy saving achieved with low investments 3 Quality of the room climate /

Measures for an improved room climate and energy consumption with low investments 4-5 “i-Tronic” Climate display device / Models 6-7 “R-Tronic” Climate display device/control /

Models 8 Energetic evaluation of the climate display/control “R-Tronic RTFC K” 9 “R-Con” Wireless receiver for surface heating and cooling systems 10 “Synet CR” Communication centre

11 “Synet CR” Software interface12 “R-Tronic WA K” Thermostat for heating and cooling operation

ContentsImprovement of the room climate and energy saving

achieved with low investments

Quality of the room climate /Measures for an improved room climate and

energy consumption with low investments

Quality of the room climateOur well being is influenced by the ambientair temperature to a high degree. Thistemperature can be adjusted to requirementsof comfort and low energy consumption byusing room temperature controllers in con-junction with hydraulically balanced radiatorsand surface heating and cooling systems.Also the temperature-dependent ambient airhumidity (RH) influences our well being.Both, ambient air temperature and humidity,can be displayed in a comfort diagram (seeillustration 1). The water vapour absorptioncapacity of the air is determined by the RHvalue. Moisture damages, for instance oncold outer walls, may occur if this value isexceeded over a longer period. Excessivewater vapour can be expelled by ventilatingthe room. This way, moisture damages canbe avoided. The frequency of airing dependson the outside temperature but a RH valueof 65% should not be exceeded. After all, the quality of the room climate isinfluenced by the carbon dioxide content(CO2) to a high degree.

Measures for an improved room climate and energy consumption with low investmentsHeat losses caused by room airing cannotbe avoided completely as a minimum ofairing must be ensured. For this reason,the Energy Saving Directive prescribes aminimum air exchange rate of 0.6-0.7h-1which can be reached with the help ofdifferent airing measures. Window airingconstitutes a very simple measure. Airexchange rates up to 15 h-1 can be reachedby opening the window completely and animprovement of the ambient air quality isalready reached after a few minutes. As littleenergy as possible should be wasted duringairing. This objective is supported by thedisplay of the CO2 and RH values and theirallocation for an optimum indoor climate.The following values are defined in theguideline VDI 6022-3:CO2 ≤ 1000 ppm (“Pettenkofer” limit)RH about 30…65%Once the measured value is again within therecommended range, window airing can beterminated. Warming up of the fresh air isnow the main task of the heating system.The heat which is stored in the walls of theroom and the interior furnishing is retainedto a large extent. When combining room temperature controland the above airing measures, much moreenergy can be saved than in systems inwhich the climate values are ignored. 1 Simplified illustration of the comfort zone

defined by the ambient air humidity andthe room temperature

2 Effects of window airing on the roomtemperature and the CO2 content in theambient air (example).

*) The “Pettenkofer” limit is a value referring to theCO2 concentration in the ambient air. When thisvalue is exceeded, the ambient air becomes inferioras a result and fatigue phenomena occur. Indoor, avalue of 1000 ppm (parts per million) is acceptable.

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1

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uncomfortably humid

comfortable

still comfortable

uncomfortably dry

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012 14 16 18 20 22 24 26 28

Ambient air temperature (°C)

Relative am

bient air hum

idity (%)

Time

Air exchange

rate

Ambient air

temperature

CO2-concentration

in the ambient air

Shock ventilation

Basic airing

Heating upCooling down

Shock ventilation

“Pettenkofer” limit*)

Outdoor concentration

1/h *

* Exchange of theambient air volumeper hour

Time

4

Oventrop offers the climate displaydevice “i-Tronic” or the climate displaydevice/control “R-Tronic” for theimprovement of the room climate.

“i-Tronic” Climate display device“i-Tronic TFC” is a climate meter monitoringthe important room climate parameters:- room temperature (°C)- relative humidity RH (%)- carbon dioxide CO2 (ppm) The climate meter shows the currentmeasured values. The improvement of theindoor climate quality through airing isdirectly visible. Thus, the user can carryout the airing periods on an energy-savingbasis. The use of the climate meter “i-TronicTFC” is an especially energy-saving andlow-investment measure for achieving agood and healthy indoor climate.

1 Example “i-Tronic TFC” with table stand

1

“i-Tronic” Climate display device

“i-Tronic” Climate display deviceModels

Product Description System

“i-Tronic TFC” Item no. 1150683

“i-Tronic TFC” Climate meter with integrated sensor for display of the

- room temperature in °C- relative humidity RH in % - CO2 content in ppm

Power supply via an external flush-mountedpower pack (100-240V∼/50-60 Hz),with wall bracket.

“i-Tronic TFC” Item no. 1150685

“i-Tronic TFC” Climate meter withintegrated sensor for display of the

- room temperature in °C- relative humidity RH in %- CO2 content in ppm

Power supply via an external mainsadaptor (100-240V∼/50-60 Hz),with table stand.

“i-Tronic TFC” Item no. 1150688

“i-Tronic TFC” Climate meter withintegrated charging electronics forlocation-independent measurement of the

- room temperature in °C- relative humidity RH in % - CO2 content in ppm

Power supply via a detachable mainsadaptor with micro-USB cable.A mobile monitoring of the importantroom climate parameters is possiblethrough two integrated rechargeable batteries (2 x AA NIMH) in the table stand.

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TEMPE

RATURE AIR H

UMIDITY

C

ARBON DIOXIDE

TEMPE

RATURE AIR H

UMIDITY

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ARBON DIOXIDE

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RATURE AIR H

UMIDITY

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ARBON DIOXIDE

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1

AIR HUMIDITY

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ERATURE

° C % ppm

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ARBON

DIOXIDE

“R-Tronic” Climate display device/control The actuators “Aktor MH/MD CON B” e. g.on the radiator are controlled via radio.A maximum of three actuators “AktorMH/MD CON B” can be teached in on one“R-Tronic”. For a mobile quick access viathe internet up to 16 wireless thermostatscan be teached in on the centre “SynetCR” (see page 10). All settings are easilymade with the wireless thermostat and thesystem status is displayed. Adjustable nominal temperatures and timeprofiles facilitate an optimum roomtemperature control. Depending on themodel, the climate control additionallydisplays the air humidity and the CO2concentration. These values can then beinfluenced directly (e. g. by airing). Models:- “R-Tronic RT B”:

Wireless thermostat with actuator “AktorMH/MD CON B” for the room temperaturecontrol with timer functions.

- “R-Tronic RTF B”:as “R-Tronic RT B”, but additionally withintegrated humidity sensor and displayof the relative humidity RH in %.

- “R-Tronic RTFC K”:as “R-Tronic RTF B”, but additionallywith CO2 sensor and display of the CO2concentration in ppm. If there is excessive CO2 concentration, airinginformation is displayed.

1 Installation example “R-Tronic RTFC K”

“R-Tronic” Climate display device/control

1

“R-Tronic” Climate display device/controlModels

7

Product Description System

“R-Tronic RT B” Wireless thermostatwith actuator “Aktor MH CON B” for

- room temperature control with timerfunctions.

Power supply via battery. Power supply via an external flush-

mounted power pack or a mains adaptoris possible (to be ordered separately).

R-Tronic RTF B” Wireless thermostat

with humidity display and actuator “Aktor MH CON B” for

- room temperature control with timerfunctions and

- integrated humidity sensor and displayof the relative humidity RH in %.

Power supply via battery. Power supply via an external flush-

mounted power pack or a mains adaptoris possible (to be ordered separately).

“R-Tronic” RTFC K” Wireless thermostatwith humidity and CO2 display as well asactuator “Aktor MH CON B” for

- room temperature control with timerfunctions and

- integrated humidity sensor and displayof the relative humidity RH in % and

- sensor for measurement of the CO2content and display of the CO2concentration in ppm.

Power supply via an external flush-mounted power pack or mains adaptor(100-240V∼/50-60 Hz).

TEMP

ERATURE

TEMP

ERATURE AIR H

UMIDITY

TEMP

ERATURE AIR H

UMIDITY

CAR

BONDIOXIDE

“R-Tronic RT B” Item no. 1150680

plus “Aktor MH CON B” Item no. 1150665

“R-Tronic RTF B” Item no. 1150681plus “Aktor MH CON B” Item no. 1150665

“R-Tronic RTFC K” Item no. 1150682/84plus “Aktor MH CON B” Item no. 1150665

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Energetic evaluation of the climate display/control “R-Tronic RTFC K”

The Oventrop climate display device /control “R-Tronic RTFC K” facilitates theimprovement of the air quality and thesaving of energy. Prof. Dr.-Ing. Rainer Hirschberg (publiclyappointed and sworn expert for heating,ventilation/air-conditioning and sanitarytechnology) outlines these advantages in thestudy - Energetic evaluation of the roomcontrol “R-Tronic” - amongst others forresidential areas in residential buildings.The essential statements of the study are:1. Air qualityThe “R-Tronic RTFC K” measures the CO2concentration and displays an exceedanceof the presettable limit value. Thus, the usernotices the necessity to ventilate the roomto maintain the air quality. At the sametime, a shortfall in the limit valuesignals the user to terminate airing. (Illustration 1 shows the temporaldevelopment of the CO2 concentrationwhen using the “R-Tronic RTFC K”.)For classification of the CO2 values asindicator for the air quality, the “exceedanceindex” has established itself. It is the productof the exceedance average value (mediumCO2 concentration in ppm less referencevalue 1500 ppm) and the excess frequency(time share in % based on the whole periodconsidered – 24h – during which the CO2concentration is higher than the referencevalue).(Illustration 2 shows the exceedance indexin ppm · % for a residential area with abasic air exchange n=0.6 1/h.)It is obvious that with a correct applicationof the “R-Tronic RTFC K” with values lessthan 1000 ppm · % (see page 3) anoptimum air quality relating to the CO2concentration can be achieved.2. Energy savingThe control concept of the “R-TronicRTFC K” (i. e. wireless thermostat andactuator are separated) excludes theheating medium temperature effect. Thestudy could determine a value for theexpenses which is far below the valueaccording to DIN V 18599-10 for PIregulators with optimization function.The study shows that approx. 29.1 % ofthe energy can be saved compared to e. g.standard thermostats directly mounted onradiators in existing buildings. (Illustration 3 shows the energyconsumption:Climate display device/control “R-TronicRTFC K” compared to other controlconcepts.)

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Energy expenditure: “R-Tronic RTFC K” Climate display/controlcompared to other control concepts

Residential area

Time in hours

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2in

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m

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Control conceptNew building Existing

building

Additionalexpenditure(through too longshock ventilation)

New building Existingbuilding

Climate display/control“R-Tronic RTFC K”

Standard thermostat 119.3 % 124.8 % 4.3 % 123.6 % 129.1 %

Electronic radiator thermostat

(standard withheating medium temperature effect)

105.5 % 105.5 % 4.3 % 109.8 % 109.8 %

3

Exceedance index – Residential area in ppm · %

n = 0.6 constant n = 0.6 constant + manual n = 30 n = 0.6 constant + “R-Tronic RTFC K” n = 30

15.000

14.000

13.000

12.000

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Temperature control

Reference (100 %)

Temperature control +shock ventilation

S

Limit value

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Room 1 Room 2

Room 1 Room 2

f

“R-Con” Wireless receiverElectronic multichannel wireless receiverfor room temperature control of up to 8independent heating zones according toadjustable timed programmes at thewireless thermostats “R-Tronic RT B”,“R-Tronic RTF B” and “R-Tronic RTFC K”Operation via the menu-driven wirelessthermostat. Selectable functions:- Pump logic with adjustable lead time

and follow-up time- Burner logic for heat demand - Two point control- PWM control for surface heating- Switching from heating to cooling

(additional module “R-Con HC” in preparation)

The functions are selected via a rotaryswitch directly at the wireless receiver. Electrothermal actuators “Aktor T 2P” 24 Vor 230 V can be connected to the 8channels (closing contact with 4A/250 VAC each).“R-Con HC” Extension module heating/cooling for “R-Con” wireless receiverThe extension module is connected to thewireless receiver “R-Con” and is used forswitching between heating and coolingoperation via a C/O signal (change-oversignal). The C/O signal can be evaluatedby standard reversible heat pumps.

1 System illustrationLegend:a Wireless thermostat “R-Tronic RT B”,

“R-Tronic RTF B”, “R-Tronic RTFC K”b Wireless receiver “R-Con”c Extension module “R-Tronic HC”

(in preparation)d Wireless window contact “FK-C F”

(in preparation)e Electrothermal actuator “Aktor T2P”

(two point)f Stainless steel distributor/collector

“Multidis SF”g Heating circuit pump

2 Wireless receiver “R-Con”, 8 channelswith logic module

Item no.: 1150772and

Extension module “R-Con HC” for wireless receiver “R-Con” (in preparation)

Item no.: 11507743 Wireless window contact “FK-C F”

(in preparation)Item no.: 1153070

“R-Con” Wireless receiverfor surface heating and cooling systems

a a

d

e

bc

24 V / 230 V

Heating/Cooling

C/O signal

3

b

b

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“Synet CR” Communication centre

“Synet CR” Communication centreThe centre for the simple networking,visualization and parameterization of“R-Tronic” climate display devices/controlsvia web interface or smartphone. Up to 16 wireless thermostats or roomscan be managed by the centre bytransmitting adjustable time programmesfor the individual room from the centre tothe “R-Tronic” via the bi-directional radiocommunication. Access options via:- the mobile network worldwide with the

smartphone (App)- a WLAN network with PC/laptop/tablet

or smartphone- a LAN network with PC/laptopUser interfaces:- integrated web interface- App for iOS and Android terminals

Interfaces:- LAN

a. direct PC/laptop connectionb. direct router connection

- USB for WLAN sticka. Access Point Modeb. Client mode

- Radio communication with “R-Tronic”climate display devices/controls

- Mains adaptor 5 VThe communication centre “Synet CR” isalso suitable for wall attachment. 1 System illustrationIntegration in the building technology2 Communication centre “Synet CR”item no. 1150687

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2

Demand

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The user interface of the communicationcentre “Synet CR” allows an easyoperation of the whole system viasmartphone, tablet or PC. This is a(terminal) neutral WEB App. The userinterface is displayed on all terminals in thesame manner.The user interface is clearly structured andtherefore allows the configuration of the“R-Tronic” system as well as the operationand visualization of the room-relatedparameters. Time profiles and desired temperaturescan be set easily. Also settings such assetback operation or standard operationcan be activated for the entire dwelling bymouse click or touchscreen.For evaluation of the climate parameters,e. g. temperature, humidity* and CO2*,there is a room to room trend recording.

1 Control room climate conveniently viasmartphone2 Startup screen of the “Synet CR”interface3 Room to room climate data (temperature,relative humidity*, CO2*)4 Trend recording of the room climate data

*) depending on the “R-Tronic” model

“Synet CR” Software interface

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2

1

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“R-Tronic WA K” Thermostat for heating and cooling operation

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Further information can be found in theOventrop catalogue “Products”, thetechnical data sheets or on the internet,product range 8. Subject to technical modificationswithout notice.

Private persons may purchase ourproducts from their qualified installer.

Presented by:

OVENTROP GmbH & Co. KGPaul-Oventrop-Straße 1D-59939 OlsbergPhone +49 (0) 2962 82-0Fax +49 (0) 2962 82-450E-Mail mail@oventrop.deInternet www.oventrop.de

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The “R-Tronic WA K” is an electronicthermostat for room temperature control offan coil units with heating and coolingfunction, for instance in hotel roomsor rooms open to the public. A simplemenu guide allows selection of the nominalroom temperature between an upper andlower limit, and three-stage or automatic(temperature controlled) fan speed control.Further settings, such as adjustment of theupper and lower temperature limits, can onlybe carried out by the qualified tradesman viaan encrypted access to the operating menu.A wireless window contact “FK-C F” can beteached in so that the heating or coolingoperation is interrupted when opening thewindow.

1 Installation example “R-Tronic RTFC K”2 “R-Tronic WA K”

Thermostat with fan drive (in preparation)item no.: 1150690

“Aktor T 2P”Electrothermal actuator (two point)

item no.:1012415/16

“FK-C F”Wireless window contact

item no.: 1153070

3 System illustration with fan coil

HeatingCooling