Systemair Demand Control

Transcription

1 Systemair Demand Control Demand Control 1

2 Contents Demand Control 3 Carbon dioxide control, fashion store 4 PIR control, restaurant washroom 6 Ventilation control with humidistat, shower room 8 Timeclock control, lunch restaurant 10 Ventilation control with timer, gymnasium in a school 12 Pressure control, dwelling-houses with cooker hoods 14 Temperature control in compressor room 16 Connection to Building Management Systems 18 Table 1, Find the right solution for every opportunity 19

3 Demand Control With Demand Controlled Ventilation, the airflow is adjusted to the actual demand.therefore, only the energy needed to create the right level of comfort is used. The fan automatically slows down reducing the airflow when there is less demand. Demand Controlled Ventilation gives a more energy effective solution with lower running costs, reduced wear and less negative environmental effects. In other words you get much better comfort for less money! Possibilities with DCV In this catalogue some of the possibilities of Demand Controlled Ventilation, available with Systemair system solutions, are shown: CO2 controlled ventilation.when the CO2-concentration increases, the fan speed will automatically increase to create better ventilation. Suitable for all areas where occupancy levels change throughout the day. Humidity controlled ventilation. At high humidity level in the room, the fan speed will increase. A suitable solution for laundry rooms, bathrooms and any room where there is a requirement to control the moisture levels in the space. Presence indicator, PIR (Passive Infra-Red). When movement is detected in the room, the fan speed will increase. Suitable for areas where there are times during the day with no occupancy.the advantage over CO2 control is that ventilation is boosted immediately on detection of movement, i.e. before the air quality has been affected. Run On Timer. Fan speed will increase for a set period of time determined by the user. Timeclock. Fan speed is controlled according to pre-programmed times in a MicroREX digital timeclock.the fan is programmed to run at high speed during periods with high load and low speed during other periods. Examples of system solutions On the following pages we show a few examples with ventilation products from Systemair. In every example, an installation with a specific fan is shown but of course most fans from the Systemair product range can be used in these system solutions. The system suggestions shown in this brochure are examples of solutions using extract ventilation. Such solutions are often used in a multitude of applications throughout Europe. However, it is becoming more common with heat recovery units and with supply and extract ventilation. For more information about heat recovery units from Systemair, please see our catalogues and specification data. Before the respective solution is used, the designer must make sure that it meets with all applicable rules and regulations. Also note that consideration shall always be taken to place sensors where the measured values are representative for the entire premises. Demand Control Components Heat recovery units also available from Systemair RET REP S-ET 10 Topvex RTRDU REU Transformer 24V/PSS20 Maxi STDT 16 K6-22Z TA Time PXDM AWE-SK 3

4 Fashion store REU 3 CO2 RT-DR sensor Carbon dioxide control CO2 ventilation control is a good alternative for demand controlled change of fan speed and is especially suitable for premises with varying number of people present.the fans run at low speed with low occupancy levels and increase to high speed with high occupancy levels. Example of suitable premises Shops with great variation in number of customers Conference halls, theatres, assembly halls and similar premises Gymnasiums, training halls Suitable for stores Example; A fashion store is open between 10 a.m. and 8 p.m. every day. Most of the time there are only the shop assistants and a few customers in the store. However, during evenings and holidays the store can be crowded with customers. Demand ventilation with CO2 Such a store is ideal for CO2 controlled 4 ventilation as the fans operate on low speed when only a few people are present in the store.the store is ventilated by a Systemair KD 250 M extract fan. CO2 controlled demand ventilation means that the fan will operate on booster speed only 17% of the time.the energy used for fan operation is reduced to half and above all, the heating cost for the premises is reduced due to the fact that less fresh air needs to be heated. Reduced need for heating For Central European conditions this means a reduced heating demand corresponding to approx. 15 MWh.This means that the additional cost for the installation is paid already after 6 months and thereafter more and more is saved each day it is being used or a better climate at the same cost. Furthermore, customers will of course stay longer in a store with comfortable climate so for the shop owner costs go down and the turn-over goes up! NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

5 CO2 RT-DR REU 3 KD 250M Cost savings during the first 5 years Example * Euro Constant speed Demand control Heating cost Fan energy Installation Low speed (400 m 3 /h), max 11 people with 10 l/s/person. High speed (1000 m 3 /h), max 28 people with 10 l/s/person. High speed approx. 3 hours/day during 5 days and 7 hours/day during weekend. Cost 60 EUR/MWh (approx. cost for electricity and heating). The calculation is valid for outdoor temperatures in Central Europe. *)Standard calculation without considering cooling demand or heat emission inside the store. CO2, 3-phase 1 pcs RTRDU (See table 1, page 19 for correct size) 1 pcs Transformer 24V/PSS20 1 pcs Contactor K6-22Z 1 pcs CO2 RT-DR CO2, 1-phase 1 pcs REU (See table 1, page 19 for correct size) 1 pcs S-ET 10 or AWE-SK (when necessary, see table 1, page 19) 1 pcs Transformer 24V/PSS20 1 pcs Contactor K6-22Z 1 pcs CO2 RT-DR Specification data The fan should be speed controlled via 2-speed (5-step) transformer with respective speed adjustable by knob.at high CO2 concentration in the room, the fan speed is changed from low to high speed. The transformer should control the fan speed in five fixed steps, manually manoeuvrable using two separate control switches on the front of the unit.the CO2 sensor should be intended for measuring of the CO2-concentration in the indoor air, be suitable for wall mounting, be equipped with display and change fan speed via transformer at set concentration value. L1 RTRDU CO2 RT-DR, 3-phase L2 L3 N Diagram 1 REU CO2 RT-DR, 1-phase Diagram 2 L N RTRDU FS FS TK TK N L1 L2 L3 U V W RT RT N L L V Trafo 24V 230V Trafo A1 K6-22Z REU N N 24V A A1 K6-22Z A CO 2 RT-DR CO 2 RT-DR S-ET 10* *) when necessary, see table 1, page 19 5

6 Restaurant washroom IR 24-P REU 1,5 PIR control Ventilation control via presence indicator, so called PIR, is a good alternative for demand controlled changing of the fan speed, especially when you want an instant change between high and low fan speed.the fan automatically changes from low to high speed when the sensor detects movement in the room, i.e. as soon as a person enters the room. Example of suitable premises Stores Conference halls, theatres, assembly halls Public toilets Gymnasiums, training halls, changing rooms and similar Suitable for restaurant washrooms The environment in the washroom of a restaurant can be of great importance for the comfort of the guests.the air quality is crucial for how the environment is perceived. Example; A certain restaurant has seven toilet spaces. In order to create a good environment the decision has been made to ventilate the toilets with 30 l/s per space during usage and a relatively high background ventilation of 15 l/s per space. As an average, the toilet is used three hours 6 per day during five days and four hours each Friday and Saturday. Controlled ventilation with PIR For a restaurant it is a good idea to control the ventilation with PIR. As soon as someone enters the room the motion sensor will trigger the high speed ventilation extract.the premises are ventilated by a Systemair KVKE 250 M extract fan. With PIR control the fan will run on high speed for 15% of the time. Less energy is needed to operate the fan and above all, less need for heating outdoor air. Reduced need for heating The above example of demand controlled ventilation would give an annual energy saving of approx. 5 MWh in Central European conditions. Ventilation on demand gives a lower total cost, which can be used either for increased comfort or simply as a saving. In our example, one part of the savings has been used to increase the airflow, resulting in a better environment for the guests. NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

7 IR 24-P KVKE 250M REU 1,5 Cost savings during the first 5 years Euro Constant speed Demand control Heating cost Fan energy Installation PIR, 3-phase 1 pcs RTRDU (See table 1, page 19 for correct size) 1 pcs Contactor K6-22Z 1 pcs Transformer 24V/PSS20 1 pcs IR 24-P PIR, 1-phase 1 pcs REU (See table 1, page 19 for correct size) 1 pcs S-ET 10 or AWE-SK (when necessary, see table 1, page 19) 1 pcs Contactor K6-22Z 1 pcs Transformer 24V/PSS20 1 pcs IR 24-P Example * Low speed (414 m 3 /h), max 7 spaces with 15 l/s/person High speed (756 m 3 /h), max 7 spaces with 30 l/s/person. High speed approx. 3 hours/day during 5 days and 4 hours/day during the weekend. Cost 60 EUR/MWh (approx. cost for electricity and heating). The calculation is valid for outdoor temperatures i Central Europe. *)Standard calculation without considering cooling demand or heat emission in the premises. Specification data The fan should be speed controlled via 2-speed (5-step) transformer with respective speed adjustable by knob. When movement is detected in the room, the fan speed changes from low to high speed. The transformer should control the fan speed in five fixed steps, manually manoeuvrable using two separate control switches on the front of the unit. Movement sensor of PIR type for wall mounting should change fan speed to high speed via transformer when movement in the room is detected. IR 24-P, 3-phase Diagram 3 IR 24-P, 1-phase Diagram 4 L N L1 L2 L3 N RTRDU FS FS TK TK N L1 L2 L3 U V W RT RT N L L V REU Trafo 230V A N N 24V Trafo K6-22Z 24V A2 S-ET 10* A1 K6-22Z A2 NC COM NO 24V IR 24-P NC COM NO 24V IR 24-P *) when necessary, see table 1, page 19 7

8 Shower rooms REU HR1 Ventilation control with humidistat In certain applications, one of ventilation s most important tasks is to guarantee that the humidity in the premises does not reach too high levels.there are various methods available and controlling the fan speed via humidistat is often a good alternative in such applications.the fan runs on high speed when needed to reduce the humidity and can run on a lower speed when the humidity is lower, thereby saving energy. Example of premises Laundry rooms Shower rooms Changing rooms Sauna- and relaxation establishments Suitable for shower rooms Example; A shower room with seven showers. A suitable airflow can be approx. 40 l/s per shower space to keep the damp away. If the showers are used four hours per day, seven days a week and an airflow corresponding to three showers is enough for the rest of the time, there is a lot of energy to be saved by ventilation control via humidistat. Notice Important to notice is that the airflow at high speed as well as low speed, must be high enough to keep the damp away.the 8 sensor should be placed where the humidity level is representative for the entire premises. Demand control with humidistat When controlling the fan speed with humidistat, the fan will run on high speed when the humidity level in the shower room so demands, other time on low speed. With ventilation on demand, the fans will run on high speed approx. 17% of the time in the example. If the premises are ventilated by a Systemair KVK 250 extract fan the energy used by the fan is approximately a third of the previous energy consumption.the fan operates on high speed when the humidistat indicates that it is necessary, regardless if the showers are used or not. In a way, besides the energy saving, it gives an extra safety against high humidity levels in the premises. Reduced need for heating In Central European outdoor temperature conditions, the largest energy-saving comes from the reduced demand for heating the outdoor air.the saving in this example with a Systemair KVK 250 extract fan will be approx. 35MWh per year.this means that the increased investment in demand control and installation has a payback time of three months. Simply good economy! NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

9 HR 1 REU KVK 250 Cost savings during the first 5 years Example * Low speed (360 m 3 /h), max 3 showers with 40 l/s/shower. High speed (1000 m 3 /h), max 7 showers with 40 l/s/shower. High speed approx. 4 hours/day 7 days/week. Euro Constant speed Demand control Humidistat, 3-phase 1 pcs RTRDU (See table 1, page 19 for correct size) 1 pcs HR1 Humidistat, 1-phase 1 pcs REU (See table 1, page 19 for correct size) 1 pcs S-ET 10 or AWE-SK (when necessary, see table 1, page 19) 1 pcs HR1 Heating cost Fan energy Installation Cost 60 EUR/MWh (approx. cost for electricity and heating).the calculation is valid for Central European outdoor temperatures *)Standard calculation without considering cooling demand or heat emission in the premises. Specification data The fan should be speed controlled via 2-speed (5-step) transformer with respective speed adjustable by knob. Fan speed to be changed via humidistat from low speed to high speed at high relative humidity in the premises. The transformer should control the fan speed in five fixed steps, manually manoeuvrable using two separate control switches on the front of the unit. Humidistat for wall mounting should be mounted in a location with good air circulation and constant temperature and humidity. Human hair should be used as the humidity sensor medium. RTRDU, 3-phase Diagram 5 REU, 1-phase Diagram 6 L1 L2 L3 N L N RTRDU FS FS TK TK N L1 L2 L3 U V W RT RT N L L HR N N REU HR S-ET 10* *) when necessary, see table 1, page 19 9

10 Lunch restaurant Timeclock control For premises where it is known in advance at what times the premises are used and approximately how many people will be there, ventilation control with timeclock is an excellent alternative. The timeclock is set to let the fans run at high speed when many people are present in the premises and low speed when few or no people are present. Example of premises Offices Daycare centres Schools Lunch restaurants, school kitchens and similar Suitable for a lunch restaurant Let us look at an example. A certain lunch restaurant has opening hours between 11 a.m and 3 p.m. five days a week. During other times it is closed.when the restaurant is open, approx. the same number of guests are visiting the premises.ventilation is controlled by a timeclock, used for a Systemair DVS 499 DV extract fan. 10 Control with 7 day timeclock Demand control with 7 day timeclock means that the fan runs on high speed only 12% of the time compared with earlier. The energy consumption of the fans is less than half and above all, the heating cost for the premises is reduced as less outdoor air needs to be heated. Reduced energy consumption For Central European conditions, the heating demand is reduced by approx. 70MWh and the fan energy with approx. 95MWh per year.this means that the extra cost for the installation is paid already after a couple of months.thereafter, more is saved for each day the system is used. It is of course also possible to use more air changes per hour in order to create an even better indoor climate at the same cost. NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

11 MicroREX TG RTRDU 2 DVS 499 DV Cost savings during the first 5 years Euro Constant speed Demand control Example * Low speed (1000 m 3 /h), max 30 people with10 l/s/person. High speed (5000 m 3 /h), max140 people with10 l/s/person. High speed approx. 4 hours/day (11:00-15:00) all week. Cost 60 EUR/MWh (approx. cost for electricity and heating). The calculation is valid for Central European outdoor temperatures Heating cost *)Standard calculation without considering cooling demand or heat emission in the premises. Fan energy Installation Timeclock, 3-phase 1 pcs RTRDU (See table 1, page 19 for correct size) 1 pcs MicroREX Timeclock, 1-phase 1 pcs REU (See table 1, page 19 for correct size) 1 pcs S-ET 10 or AWE-SK (when necessary, see table 1, page 19) 1 pcs MicroREX Specification data The fan should be speed controlled via 2-speed (5-step) transformer with respective speed adjustable by knob. The fan speed to be switched between high and low speed via digital timeclock with pre-programmed switching times for each day of the week.the transformer should control the fan speed in five fixed steps, manually manoeuvrable using two separate control switches on the front of the unit. The weekly timeclock should change fan speed, have a display for showing programs and have manual as well as automatic change of summer and winter time. MicroREX, 3-phase L1 L2 L3 N Diagram 7 MicroREX, 1-phase Diagram 8 L N RTRDU FS FS TK TK N L1 L2 L3 U V W RT RT N L L L N MicroREX REU N N L N MicroREX S-ET 10 * *) when necessary, see table 1, page 19 11

12 Gymnasium Ventilation control with timer Ventilation control with a simple timer, a so called "egg clock", is a simple and very inexpensive way to attain ventilation on demand, which can also save a lot of energy.with a timer, the change of fan speed is made manually. In this way, the user of the premises decides when the fans should operate on high or low speed. Example of premises Conference halls, theatres, assembly halls Gymnasiums, training halls, changing rooms and similar Suitable for gymnasiums As an example we can study a gymnasium in a school. Demand controlled ventilation with timer is used for the gymnasium, which is used between 11 a.m to 5 p.m. five days a week.the school is closed during other times. Occasionally the gymnasium is used in evenings and in weekends by various sports clubs. Demand control with timer means that the fan will run on high speed only a third of the time compared with earlier.the energy consumption of the fan will be almost halved. Reduced energy consumption Due to the fact that less outdoor air needs to be heated, the heating demand will be reduced by approx 20MWh.This means 12 that the additional cost for the installation is paid after approx. half a year.thereafter, more money is being saved for every day that the system is used. Furthermore, studies show that both children s ability to learn and develop and their health improve with better air quality. So, there are many reasons for building systems with high quality and efficiency in schools and day care centres! NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

13 T 120 MUB 025 REU 1,5 Cost savings during the first 5 years Euro Constant speed Demand control Heating cost Fan energy Installation Example * Low speed (900 m 3 /h), max 25 people with 10 l/s/person. High speed (2000 m 3 /h), max 55 people with 10 l/s/person. High speed approx. 10 h/day 5 week days and 4 h/day during the weekend. Cost 60 EUR/MWh (approx. cost for electricity and heating).the calculation is valid for Central European outdoor temperatures *)Standard calculation without considering cooling demand or heat emission in the premises. Timer, 3-phase 1 pcs RTRDU (See table 1, page 19 for correct size) 1 pcs T120 Timer Timer, 1-phase 1 pcs REU (See table 1, page 19 for correct size) 1 pcs S-ET 10 or AWE-SK (when necessary, see table 1, page 19) 1 pcs T120 Timer Specification data The fan should be speed controlled via 2-speed (5-step) transformer with respective speed adjustable by knob. The fan speed to be switched manually from high to low speed via 120 minute timer. The transformer should control the fan speed in five fixed steps, manually manoeuvrable using two separate control switches on the front of the unit. T 120, 3-phase Diagram 9 T 120, 1-phase Diagram 10 L1 L2 L3 N L N RTRDU FS FS TK TK N L1 L2 L3 U V W RT RT N L L P1 1 T 120 timer P2 2 REU N N P1 1 T 120 timer P2 2 S-ET 10* *) when necessary, see table 1, page 19 13

14 Dwelling houses with cooker hoods Pressure control Ventilation with extract fans is still common in many homes although balanced ventilation with supply and extract air units with heat exchanger is becoming more popular. In order to avoid reduced airflow in other parts of the homes when the cooker hoods are used with boosted airflow, it is necessary to pressure control the extract fan so that the total airflow through the home increases. Example of premises Premises with varying airflow, such as: Dwelling-houses with cooker hoods Conference halls and other premises with shut-off damper Suitable with cooker hoods Systemair has a complete product line for houses with cooker hoods, from fans with controls to the actual cooker hoods. For further information about Central Home Ventilation, please see our catalogue CEBOCON. Save energy With outdoor temperature compensated pressure control, the fact that the fan does not need to work equally throughout the year is taken into account.at low temperatures, when the difference between indoor and outdoor temperature increases, the climbing forces and the natural draught through the ventilation ducts increase. In other words, the fan does not need to work as much.with outdoor compensation the fan speed will be adjusted accordingly.this will give increased comfort as the fan will give correct airflow throughout the year. 14

15 REP 6 TOS TFR DSG TFER 315L Pressure control, 3-phase 1 pcs PXDM (See table 1, page 19 for correct size) 1 pcs DSG, Pressure transducer 1 pcs TFR,Temperature sensor Pressure control, 1-phase 1 pcs REP (See table 1, page 19 for correct size) 1 pcs DSG, Pressure transducer 1 pcs TFR,Temperature sensor Specification data The fan should be speed controlled via electronic stepless pressure control (P or PID) with adjustable set point and P-band.The fan speed should be automatically and steplessly controlled via pressure transducer. The pressure transducer should be of the membrane type for measuring of pressure difference and generate a voltage (0-10 V) proportional to the position of the membrane. Connection PXDM, 3-phase Diagram 11 Digital IN 1 Analog OUT 1 24V DC OUT 1 Analog IN 1 Analog IN 2 Digital IN 2 E2.1 E2.2 C V J2 D- D+ N L1 L2 L3 U V W GND TK TK D1 D1 A GND 24V 24V E1 GND E2 GND D2 D2 E1.1 E1.2 ma GND 24V K1 K2 PE N L1 L2 L3 + + output DSG V Press. (Imax=10mA) trans. 1 U V W PE M 3~ bzw. Y or D TK TK + 2 TFR Temp. sensor + GND D+ D- Connection REP, 1-phase Diagram 12 15

16 Compressor room Temperature control Considerable savings can be achieved with temperature controlled fan speed in many applications, especially where excess heat is available from various processes. Example of premises Premises with excess heat which can be used, such as: Compressor rooms in industries Computer or server rooms Transformer rooms Engine rooms Please note that the cooling demand of the equipment must be satisfied in the first place and that the air in the premises must be clean enough to be used, possibly after further filtration. Temperature control of the fan speed can be suitable also when the premises are heated via the ventilation system. Suitable for compressor rooms In a typical industrial compressor, maximum 4-5% of the supplied energy generates compressed air.the balance, or as much as 95-96% of the energy becomes excess heat. The energy consumption can correspond to over 70% of the life cycle cost of a compressor and to generate compressed air can sometimes correspond to over 40% of the plants total cost for electricity. In other words, considerable savings can be achieved if the excess energy from a compressor can be taken care of in a good way. 16 Temperature control reduces cooling of the air By utilising the excess heat from a compressor for heating of adjacent premises it is possible to save energy. In certain cases it can be done by bringing the air from the compressor room back on the extract air side through a heat exchanger in the air handling unit.this way, possible contamination from the compressor room to the supply air is minimised, depending on the leakage through the heat exchanger. If the heat exchanger is used also for cooling recovery, use of damper is advisable (not shown in the example). In order to utilize as much as possible of the excess heat, it should be avoided to bring in too much cold outdoor air into the compressor room. In order to achieve this, the extract fan of the compressor room can be temperature controlled. Make use of the energy A medium-sized industry compressor has a 55kW motor. If the compressor is fully used approx. 40% of the time, e.g. for a plant with mainly day shift, it means that an average of 22kW effect must be supplied. Of these 22kW, approx. 95% or 21 kw will contribute to the heating of air, the balance generates compressed air. If adjacent premises have a heating demand beyond this, more or less the whole saving can be utilised. Note that if the heating demand of the premises coincides with the usage of the compressor, the effect will be considerably higher. If there is a heating demand for the air during approx. seven months per year (Central European conditions), it means that for a plant operating daytime the energy-saving is 53MWh.The cost for the equipment for temperature control of the fan and installation is paid back within just a month. NB! It is often possible to save even more energy with a heat recovery unit. For more information about heat recovery units from Systemair, please see our catalogues and specification data.

17 RET 6 TFR AW 630 E6 Compressor room with 55kW compressors 7000 Euro Constant speed Temperature control Temperature control, 3-phase 1 pcs PXDM (See table 1, page 19 for correct size) 1 pcs TFR,Temperature sensor Temperature control, 1-phase 1 pcs RET (See table 1, page 19 for correct size) 1 pcs TFR,Temperature sensor Heating cost Fan energy Installation Example Compressor room with 55kW compressor. Calculated supplied power is 22kW (total operation time 40% of the time). Saving calculated at 22kW heating demand, seven months per year. Cost 60 EUR/MWh (approx. cost for electricity and heating). Specification data The fan should be speed controlled via electronic stepless temperature control (P or PID) with adjustable setpoint and P-band.The fan speed should be automatically and steplessly controlled via temperature sensor. The temperature sensor should be surge protected with PTC-element (R20ºC approx. 1.9kW). Connection, PXDM 3-phase Diagram 13 Digital IN 1 Analog OUT 1 24V DC OUT 1 Analog IN 1 Analog IN 2 Digital IN 2 E2.1 E2.2 C V J2 D- D+ N L1 L2 L3 U V W GND TK TK D1 D1 A GND 24V 24V E1 GND E2 GND D2 D2 E1.1 E1.2 ma GND 24V K1 K2 PE N L1 L2 L3 + + output V (Imax=10mA) 1 DSG Press. trans. U V W PE M 3~ Y bzw. or D TK TK + 2 TFR Temp. sensor + GND D+ D- Connection RET, 1-phase Diagram 14 17

18 Connection to Building Management Systems Running mode FF1 OK CO2-level 800 ppm CO2 Fan speed Low speed, 400 m 3/ h Connection 1-phase Communication bus Other delivery More and more people realize the advantages with Building Management Systems. Easily accessible information increases the reliability and cost for service and maintenance can be lowered. With control equipment from Systemair there are good possibilities to connect with various Building Management Systems. In this way it is possible to get alarm information and possibility to change fan speed by remote control via data communication. Possibly the simplest method is to connect the fan transformer and motor protection to a programmable digital regulator with communication ability. Alarm is connected to a digital input on the regulator and a digital output on the regulator changes fan speed via a contactor. Sensors for various signals are connected with an analogue or digital input and change of fan speed is made via control logic in the regulator's software. As a basis for function description for the software, the descriptions on the previous pages in this brochure can be used. Programmable digital regulator Alarm (n.o.) DI DI 23* 24* S-ET 10/ AWE-SK A1 K6-22Z LO/HI DO A2 AI/DI AI/DI DO Sensor: CO2, PIR etc. REU *) for AWE-SK use terminals 3 and 4 Systemair delivery Connection 3-phase Communication bus to computer Other delivery Electrical connection Note! For 3-phase fans, the fan should be connected via the motor protection STDT 16, in addition to the RTRDU, to get a fan alarm signal. Scope of delivery Systemair Fan and transformer Contactor, K6-22Z Motor protection, STDT 16 or S-ET 10 Other delivery Digital regulator Programming of control logic Building Management Systems Programmable digital regulator Alarm (n.o.) DI DI STDT A1 K6-22Z LO/HI DO A2 AI/DI AI/DI DO Sensor: CO2, PIR etc. RTRDU 11 TK 12 TK 18 Systemair delivery

19 Find the right solution for every opportunity Table 1 Transformer Sensor Thyristor Thyristor Motor protection for Demand Control Pressure control Temperature control Fan 2-step Motor CO2 PIR Hum- Time- 120 min Controller Diagram Controller Diagram transformer protection idity clock timer K 100M-250L REU 1,5 * REP6 12 RET6 14 K 315M - 315L REU 1,5 * REP6 12 RET6 14 KD 250L, 315L REU 3 * REP6 12 RET6 14 KD 315XL1, 400M1 REU 3 S-ET REP6 12 RET6 14 KD 400M3, 400XL3 RTRDU PXDM5 11 PXDM5 13 KD 400XL1 REU 5 S-ET REP6 12 RET6 14 KD 500M1 REU 7 S-ET REP10 12 RET10 14 KD 500M3 RTRDU PXDM5 11 PXDM5 13 KVK REU 1,5 AWE-SK REP6 12 RET6 14 KVK 200, 250 REU 1,5 S-ET REP6 12 RET6 14 KVK 315M, 315L-400 REU 3 S-ET REP6 12 RET6 14 KVK 500 REU 7 S-ET REP10 12 RET10 14 KVKE , 250L REU 1,5 * REP6 12 RET6 14 KVKE 315L REU 3 * REP6 12 RET6 14 MUB E4-A2 REU 1,5 S-ET REP6 12 RET6 14 MUB E4-A2 REU 3 S-ET REP6 12 RET6 14 MUB E4-A2 REU 5 S-ET REP6 12 RET6 14 MUB E4-A2 REU 7 S-ET REP10 12 RET10 14 MUB DV-A2 RTRDU PXDM10 11 PXDM10 13 MUB DV-A2 RTRDU PXDM10 11 PXDM10 13 KE REU 1,5 S-ET REP6 12 RET6 14 KE REU 3 S-ET REP6 12 RET6 14 KE REU 5 S-ET REP6 12 RET6 14 KE REU 7 S-ET REP10 12 RET10 14 KT , RTRDU PXDM5 11 PXDM5 13 KT RTRDU PXDM5 11 PXDM5 13 KT , RTRDU PXDM10 11 PXDM10 13 RSI 60-35M1, 60-35L1 REU 3 S-ET REP6 12 RET6 14 RSI 60-35L3, 70-40L3 RTRDU PXDM5 11 PXDM5 13 RSI 70-40L1 REU 5 S-ET REP6 12 RET6 14 RSI 80-50M3 RTRDU PXDM5 11 PXDM5 13 RSI 80-50L3, L3 RTRDU PXDM10 11 PXDM10 13 TFER 125M-315L REU 1,5 * REP6 12 RET6 14 DVS 190EZ-311EV REU 1,5 * REP6 12 RET6 14 DVS 355E4 REU 1,5 S-ET REP6 12 RET6 14 DVS 400E4 REU 3 S-ET REP6 12 RET6 14 DVS 400DV RTRDU PXDM5 11 PXDM5 13 DVS 450E4 REU 5 S-ET REP6 12 RET6 14 DVS 450DV, 499DV RTRDU PXDM5 11 PXDM5 13 DVS 500DV RTRDU PXDM5 11 PXDM5 13 DVS 500DS, 560DS RTRDU PXDM5 11 PXDM5 13 DVS 560DV, 630DS RTRDU PXDM5 11 PXDM5 13 DVS 710DS RTRDU PXDM10 11 PXDM10 13 AW 200E2-K, E4-K, 250E4-K, 300E4-K REU 1,5 AWE-SK REP6 12 RET6 14 AW 250E2-K, 315E4-K, AW 350E4-K, 400E4-K, AW 450E4-K REU 1,5 S-ET REP6 12 RET6 14 AW 500E4 REU 5 S-ET REP6 12 RET6 14 AW 500D4-2, 560D4-2 RTRDU PXDM5 11 PXDM5 13 AW 560E4 REU 7 S-ET REP10 12 RET10 14 AW 630E6 REU 3 S-ET REP6 12 RET6 14 AW 630D4-2, 710D6-2, AW 800D6-2 RTRDU PXDM5 11 PXDM5 13 KBT 160E4, 180E4 REU 1,5 S-ET REP6 12 RET6 14 KBT 200E4, 255E4 REU 7 S-ET REP10 12 RET10 14 KBT 250DV, 280DV RTRDU PXDM10 11 PXDM10 13 KBR 315DV RTRDU PXDM5 11 PXDM5 13 KBR 315DZ RTRDU PXDM5 11 PXDM5 13 KBR 355E4 REU 3 S-ET REP6 12 RET6 14 KBR 355DZ RTRDU PXDM10 11 PXDM10 13 *)external motor protection not needed 19

20 Systemair AB SE Skinnskatteberg, Sweden Tel Fax Systemair Inhouse studio January 2007 Art no E8055