Operating Instructions

Transcription

1 Mechanical Ventilation Heat Recovery Unit maxi 801 DC maxi 1201 DC maxi 2001 DC maxi 3001 DC maxi 4001 DC pict.: maxi 2001 Operating Instructions Please keep next to the MVHR unit! Status: pict.: Remote control Paul Wärmerückgewinnung GmbH August-Horch-Straße Reinsdorf Deutschland Tel.: +49(0) Fax: +49(0)

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3 TABLE OF CONTENTS Seite 0. INTRODUCTION... 1 I. GENERAL MAINTENANCE... 1 II. INSTALLATION How to assemble the roof (VEX option) Connecting the drain pan Other installation advices III. WIRING INSTRUCTIONS General informations General schematic of the Maxi units Schematic of the T sensors positioning in the Maxi unit Label placed in the box 3 cover (i/o REC print board) Power supply to the fans and the control devices Power supply for the electric antifreeze coil KWin (option) Power supply and connections for the electrical post heating coil KWout (option) Power supply Coil Control Connecting the post heating water coil (option) Power supply Water connection (to be made by the installer) Starting the TAC3 Maxi control General schematic of the Maxi control device Connecting the remote control to the i/o REC module Open the RC casing Wiring diagram to connect the RC module to the i/o REC module Selecting the Master IV. SYSTEM CONFIGURATION INSTRUCTIONS Working modes Mode: setup, operating instructions and wiring diagrams Setup mode Operating mode with RC module master Operating mode with i/o module master Mode : setup, operating instructions and wiring diagrams Setup mode Operating mode with RC module master Operating mode with i/o module master Mode : setup, operating instructions and wiring diagrams Setup mode Operating mode with RC master Operating with i/o module master Bypass control with Maxi s TAC3 Maxi control Standard built in antifreeze protection of the heat exchanger Antifreeze the heat exchanger with pre-heating KWin (option) Setup of the KWin pre-heating coil control Modifying the assigned floor T Control features of the TAC3 Maxi KWout post heating electrical coil control (option) Setup of the KWout post-heating coil control Modification of the assigned floor T (caution: maximum 50 C) Control features of the TAC3 Maxi NV post heating of the supply air with a water coil (option) Working with CT option Display on the RC Fan failure alarm Actual airflow / pressure output signals Advanced setup Fortsetzung Folgeseite

4 4.12 Alarms Alarm types Alarm table Wiring diagram of relays when alarms Fire alarm Configuration Wiring diagram of fire alarm Anhänge Appendix 1: ADVANCED SETUP Appendix 2: TECHNIL INFORMATION - RC TAC3 - ALARMS Appendix 3: TECHNIL DOCUMENTATION VISUALIZATION Appendix 4: INSTALLATION INSTRUCTIONS NV POSTHEATING COIL Appendix 5: INSTALLATION CONTROL DATASHEET... 55

5 0. INTRODUCTION PLEASE READ THIS MANUAL REFULLY BEFORE START-UP! This manual contains all the required instructions for an optimal assembly of a unit and the heat recovery device (WRG) of the type. It also serves as a guide for maintenance and customer service work. Using this manual, you can learn how to easily use your heat recovery device in as optimal a way as possible. In case you have to do any work inside the device we recommend taking the advice of the installation company. The device is subjected to continuous improvement and further development. It is possible, therefore, that your device differs slightly from the description. We hope you enjoy using your. PLEASE NOTE: Great care has been taken in preparing this manual. However, you are not entitled to any rights through its use. We reserve the right to modify the content of this manual, partially or completely, at any time. I. GENERAL MAINTENANCE INSTRUCTIONS CONSTRUCTION characteristics The structure is made out of omega shaped anodized aluminum profiles connected by reinforced polypropylene auto-extinguishable (M1) corner pieces. The panels are 30mm double skin steel plates insulated. The outside panels are 0,8mm thick pre-painted (5µm primer + 20µm polyester)-gray RAL 9002 color, covered with a plastic protection (to be removed after installation). The inside panel is 0,8mm galvanized steel. This combination allows the exposure of the panels to outdoors conditions, and forms a rigid structure. Thermal insulation is carried out by EPS panels (density 30 g/l), self-extinguishing (M1 class), in conformity with the European environment standards, inserted between layers. The is mounted on a steel frame and is mono-structured. All the access doors to the ventilators and filters are equipped with handles. Air tightness: Internal: Class 1 as per EN External: Class 2 as per EN TAC technology fans The series is equipped with TAC technology centrifugal ventilators. The regulation TAC3 is specifically developed to take advantage of this technology. Verify that the supplied voltage corresponds to the specification of the ventilators and that the connection is made according to the supplied wiring instructions. Attention! : The starting up / stop of the unit must be activated by using the softstop function on K1/K2/K3 or via the RC, and not by shutting off the power supply. Always check the following electrical specifications: Power supply voltage: 230VAC (210V<V<250V). Power supply frequency: 50/60 Hz. Grounding the unit is compulsory The motor is self-protected against overloading. It is thus NOT necessary to install an electrical overload protection device. See section 3.2 for detailed wiring instructions. 1

6 Before starting the unit - If the fan wheel is turning properly, without resistance? - Verify if the installation and the connections are made according to the applicable European standards. - Are the precautionary measures to avoid an accident taken? (Wiring, rotating parts, security measures,) Operating conditions The temperature over the fan motor cannot be lower than -10 C, or superior to 55 C. The unit is not designed to operate in an aggressive or an explosive environment. It is strongly not advised to stop and start the unit more often than every 5 minutes. About the counterflow AIR/AIR heat exchanger When properly maintained the heat exchanger will obtain efficiencies superior to 90% according to working conditions. This may result in the production of condensates which will be collected by the drain pan. In severely cold conditions, condensation can also cause a production of frost on the heat exchanger. Before starting the unit, check that the drain pan is properly connected with the siphon delivered, and that the connections to the drainage are airtight. The slope of the drainage must be of at least of 1cm/m. The siphon must be accessible In the outdoor version of the a siphon with membrane is supplied If a risk of frosting of the drainage is existent, install a wire resistance (not supplied). Protect the heat exchanger by regularly cleaning or replacing the filters. To protect from frosting, the TAC3 control is as standard delivered with an inbuilt heat exchanger antifreeze system (by unbalancing the in and out airflows). There is also the KWin pre-heater option available to accomplish this if deemed necessary. The units are specified not to exceed a frontal air speed on the heat exchanger of 2,2m/s. Fan maintenance Before proceeding to maintenance, first stop the fans using the softstop feature and the only then proceed to the shutdown of the power supply. Verify the state of the fans. If they need to be cleaned use dry or moist cloths with a degreaser. Be careful not to alter the balancing of the fans when doing this. Do not remove the clips of balancing). Filters units are delivered with G4 filters for the air out flow and F7 filters for the air in flow. Filters are the protectors of the heat exchanger, but also of the quality of the air you breathe. Check regularly (once a month) the state of the filters. Vacuum the filters if necessary, and replace them when they are too dirty. Clogged filters can create the following failures: - Insufficient ventilation - Excessive increase of the rotation speed of the fan creating excessive noise and power consumption - A damaged filter allows 'dirty' air to enter the heat exchanger which will eventually clog the heat exchanger Filter identification for replacement: Unit type Filter(s) air out Filter(s) air in x G4 (470x287x50) cid x F7 (470x287x50) cid x G4 (830x287x50) cid x F7 (830x287x50) cid x G4 (503x370x50) cid x F7 (503x370x50) cid x G4 (503x370x50) cid x G4 (436x370x50) cid x F7 (503x370x50) cid x F7 (436x370x50) cid x G4 (436x370x50) cid x F7 (436x370x50) cid

7 Installation control datasheet (see appendix) When the installation is completed and running, we strongly advise that the installer fills in the installation datasheet recapitulating all the data useful for maintenance of the installation. Please keep a copy of this datasheet closely as it may come handy for many reasons: make a clear communication in case of discussion with the manufacturer information if you need to change parameters when necessary, this document can become an important factor in case of guarantee issues. Guarantee The guarantee of the manufacturer begins at the date of invoicing of PLC to the installer. The guarantee is of 2 years, except on the mobile parts where it is of 1 year. The guarantee is limited to the replacement of the defective parts, and does not include labor and traveling expenses. The guarantee becomes void if: The installation is not accomplished according to the prescriptions described in this above. Repairs were carried out by unqualified staff. The startup control datasheet (see appendix) is not filled in properly and not made available when claiming Conformity CE, under formal condition that the final product integration is made in conformity with the applicable standards. II. INSTALLATION INSTRUCTIONS 2.1. How to assemble the roof (VEX option) The roof (VEX) option is delivered unassembled for transportation reasons. Please follow these instructions to assemble the different parts: a) Remove the plastic film from the top part of the unit. Make a silicone seal (not supplied) between the panels and between the aluminum profiles on the top part of the unit, as shown on the picture a) b) Place the different elements of the roof on top of the unit, over the silicone seals. Make sure you leave an adequate distance on each side of the unit so as to cover the whole unit properly. (Suggested distance: +/-50mm on the sides, and +/-100mm on the front and back of the ). a) b) c) Use the supplied M8 screws to screw the roof onto the unit. The screws must be screwed into the aluminum profile and properly aligned. Use a pen to point the location of the screw. Mount the plastic caps supplied over the screw heads. 3

8 d) Insert silicone inside the U-clip used to join the different roof parts and place the clip over the roof sections as shown on picture d1 and d2. c) d1) e) Make a silicone seal between the aluminum profile and the roof all around the unit, as shown in picture e). 2.2 Connecting the drain pan d2) e) If the unit is installed indoors: Before starting, control the following points: - if the drain pan is watertight; - the connection between the drain pan and the evacuation pipe is airtight; - the height of the siphon is at least of 120 mm; - the pressure difference between outside and inside the unit cannot exceed 350 Pa; - check for the presence of a ventilation downstream of the siphon; - the slope of the evacuation pipes is at least 1 cm/m; - the siphon is accessible to allow cleaning indoor siphon If the is installed outdoors: The siphon delivered with for outdoor application is a special siphon with a membrane. It is thus not necessary to fit it to a drainage pipe as the water can directly drop on the ground. The membrane integrated into this type of siphon creates the air tightness. outdoor siphon 4

9 2.3 Other installation advices Make sure the unit is installed on a flat surface Leave sufficient access to the unit. Make sure it is possible to access to all the components for maintenance: fans, controls and filters. We advise at least 50 cm on each sides of the unit, Special care has been taken to deliver an airtight unit. Make sure the ductwork is also very airtight, specially at the connections with the unit on the supply air side. If the unit is installed outdoors, take the dominating winds into account when orientating the unit. Try to protect the air inlet as much as possible from storm winds and rain. III. WIRING INSTRUCTIONS 3.1 General informations General schematic of the units Main switch for power supply to fans and control 2. Main switch for power supply to pre (Kwin) and/or post (Kwout) heating coils 3. Controls for KWin and/or KWout (options) and i/o REC circuit (i/o module) 4. Central wiring station CBr4 TAC3 REC (factory pre-wired) 5. By-pass 100% 6. Drain pan and connection pipe 7. Supply Fan 8. Exhaust fan 9. Air/Air heat exchanger 10. Remote Control (RC) 5

10 All electrical connections made the installer are in 1/2/3/ Schematic of the T sensors positioning in the unit Label placed in the box 3 cover (i/o REC print board) 3.2 Power supply to the fans and the control devices All the internal cables (fans, controls, sensors, ) to the main switch are factory pre-wired. All the power supply wiring that remains is the main power supply to the main switch(es). Wiring specifications: Unit type Supply Voltage mum amps Protection type (2) Protection caliber (1) x 230V 4,1 A D A AC3 8 A x 230V 5,2 A D A AC3 8 A x 230V 10,6 A D A AC3 16 A x 230V 13,2 A D A AC3 20 A x 400V + N 10,6 A (3) D A AC3 16 A (4) (1) Grounding is compulsory (2) D type slow reaction curves - shutoff power A - AC3. (3) Max current per phase. (4) 3x400V + N. 6

11 3.3 Power supply for the electric antifreeze coil KWin (option) All the internal cables of the KWin coil to the main switch are factory wired. All that needs to be wired is the main power supply to the main switch. Wiring specifications: Unit type Supply voltage KWin heating mum amps (1) capacity x 400V + N 3 kw 4,3 A x 400V + N 4,5 kw 6,5 A x 400V + N 6 kw 8,7 A x 400V + N 9 kw 13,0 A x 400V + N 12 kw 17,3 A (1) Grounding is compulsory 3.4 Power supply and connections for the electrical post heating coil KWout (option) Power supply All the internal cables of the KWout coil to the main switch are factory wired. All that needs to be wired is the main power supply to the main switch. Wiring specifications: Unit type Supply voltage KWoutn heating mum amps (1) capacity x 400V + N 3 kw 4,3 A x 400V + N 4,5 kw 6,5 A x 400V + N 6 kw 8,7 A x 400V + N 9 kw 13,0 A x 400V + N 12 kw 17,3 A (1) Grounding is compulsory Coil Control A supplied temperature sensor and cable (5m) has to be installed in the supply duct and connected to the KWout control. If the unit is installed outside the sensor cable must be protected. Connect the 2 wires to terminals 10 and 12 of the KWout control (see schematic) Supply T sensor 7

12 It is possible to show the actual supply T on the display of the RC. To do it, it is necessary to connect a second temperature sensor (see schematic). If there is no sensor connected there will be no display of the value on the RC. i/o REC circuit T sensor It is possible to overrule the heater s control system using the following connection, allowing shutting down the post heating using an external contact. i/o REC circuit Post-heating ON/OFF Contact closed = post heating OFF Contact open = post heating ON 3.5 Connecting the post heating water coil (option) The post-heating water coil is delivered with a motorized 3-way valve Power supply The connection of the power supply to the valve motor is carried out in the factory as well as the connection to the control device, The supplied temperature sensor must be mounted in the supply duct, and must be wired as shown: i/o REC circuit T sensor 8

13 The control allows to automatically starting the circulator of the hot water circuit. To do so wire in series (electrical) the OR3 relay contact with the water pump command as following : i/o REC circuit It is possible to overrule the heater s control system using the following connection, allowing shutting down the post heating using an external contact. i/o REC circuit Water pump OFF ON Post-heating ON/OFF Contact closed = post heating OFF Contact closed = post heating ON Water connection (to be made by the installer) Connection schematic: 9

14 These are the specifications for the water coil connection: Unit type Diameter Diameter on Coil Capacity Water flow (*) Pressure loss (*) on the coil the valve (*) 800 1/2 3/4 4,5 kw 199 l/h 1,4 kpa /2 3/4 8,0 kw 353 l/h 6,5 kpa /2 3/4 13,2 kw 585 l/h 20,4 kpa /2 3/4 19,4 kw 857 l/h 11,1 kpa /2 3/4 27,8 kw 1200 l/h 26,8 kpa (*) Nominal values for following selection conditions: air in T : 18 C, water in/out T: 90/70 C. For other conditions refer to the lobal selection software or provided data sheet for the project. 3.6 Starting the TAC3 control The TAC3 control is delivered assembled and factory wired. Only the RC (Remote Control) must be installed where chosen and wired by a qualified installer. The TAC3 control consists of 3 parts (see 3.1): A CBr4 TAC3 REC circuit which is factory assembled wired and tested in the unit. No connections are to be made by the installer to this part. An i/o REC circuit which is factory assembled wired and tested. It is located on the outside of the front panel of the unit. All the installer s wirings and settings are made on this component. A remote control RC TAC3 REC which must be properly wired by the installer to the i/o REC circuit. This component allows full configuration of the unit, display of all the parameters as well as the control of the fans General schematic of the control device Located outside the unit Connecting the remote control to the i/o REC module The connection between the various modules is made by a communication bus. Once you know where to install the RC follow these steps to connect the RC to the i/o module: 10

15 Open the RC casing Using a small screwdriver unlock the 4 pins 2 pins on each side Remove the cover Points for fixation of the casing (spacing = 88mm) RC dimensions = 122 x 66mm RC wiring terminals Caution: The RC is the module that saves the setup data. If you need to replace the RC you need to re-configure the setup. It is therefore important to fill in the setup datasheet after 1rst installation (see appendix) to remember the setup parameters. For the same reason, it is not possible to operate the without RC. The RC box is class IP20 and cannot be installed outdoors as such. If you wish to install it outdoors (for instance on the unit) you need to fasten inside a proper watertight box. 11

16 Wiring diagram to connect the RC module to the i/o REC module Cable specifications Recommended cable: category 5 shielded twisted pair (FTP) cable with a section of 0,26 0,50 mm². Use 1 pair to connect GND and +12V and 1 pair to connect B- and A+. mum cable length: 1000 m. Keep this communication cable at distance from power cables. If the unit is installed in a location with high electro-mechanical interference levels: the shielding must be connected on one side to the shielding of the cable connecting the CBr to the i/o REC. If the unit is installed outside, select a suitable cable for outdoor application (UV light, ) Selecting the Master «Selecting the master» means the determination of which module of the i/o and the RC will control the fans, controlling the fans means: If mode is chosen (see 4.1.1), to be the master means to control the start/stop of the fans as well as to select the airflow If or mode (see and 4.1.3), to be the master means to control the start/stop of the fans as well as to activate/deactivate a different assignment (assignment multiplier). i/o module is master RC is master i/o REC circuit i/o REC circuit Control Visualization Control Visualization i/o module is «master»: contact between terminals IN3 and +12Vdc of i/o module is closed. The i/o module allows control of the fans through its inputs. The RC allows to configure and to de visualize all the parameters on the display and with the LEDs, RC module is «master» contact between terminals IN3 and +12Vdc of i/o module is open. The i/o module is reduced to being an only passive link between the RC and the fans. The RC allows to configure and to visualize all the parameters on the display and with the LEDs The RC controls the fans with the OFF / I / II / III keys 12

17 Wiring diagram Contact closed = i/o module is master, Contact open = RC module master Caution: Use gold plated contact only. The use of this contact enables to switch automatically from RC master to i/o master. Using this you can for instance : Work in RC master and switch in position i/o master to stop automatically the fans (attention, in this case the inputs K1/K2/K3 on the i/o have to be disconnected from the +12V). Work in RC master and switch in position i/o master to activate automatically a sleep value (attention K1/K2/K3 on the i/o have to be properly connected to activate this value). 13

18 IV. SYSTEM CONFIGURATION INSTRUCTIONS 4.1 Working modes The various working modes give the user the choice on how the airflow must be modulated according to your application. In all the working modes the supply fan will operate according to the assigned mode and parameters. The airflow of the exhaust fan will then equal to a percentage of the actual airflow of the supply fan (noted %EXT / PUL for ratio between exhaust and supply airflows). The control allows configuration of one of the following 4 modes, briefly described hereunder. For more information consult the TAC technology section on our website. MODE: 3 constant airflow assignments for the supply fan are determined by the user (m³h K1, m³h K2 et m³h K3). MODE: The assigned supply airflow is a function of a 0-10V linear signal. The user defines the link with 4 parameters: Vmin, Vmax, m³h Vmin et m³h Vmax, applied to the following diagram: With m³h Vmin < or > m³h Vmax (positive or negative link) Using the advanced setup, it is possible to stop the fans once the input signal value has reached a certain upper and/or lower limit. MODE: This mode can either be applied on the supply or the exhaust. on supply: the airflow of the supply fan(s) is modulated so as to maintain constant a certain pressure value measured by a pressure sensor properly located in the ducting. on exhaust: the airflow of the exhaust fan(s) is modulated so as to maintain constant a certain pressure value measured by a pressure sensor properly located in the ducting. MODE OFF: Is not a real working mode, it is a way to temporarily shortcut the i/o master setup. It allows, if working in i/o master, to stop the fans with the RC. But then to restart the fans it is required to choose one of the other 3 working modes. 14

19 4.1.1 Mode: setup, operating instructions and wiring diagrams Setup mode The setup is made by means of the LCD screen and the 4 knobs SETUP,, and ENTER of the RC. To start the setup: - Enter in the setup mode using the left knob on the diagram so that the SETUP LED ignites - Press then the SETUP knob until the text SETUP appears on the screen. The idea is to select your choice with the knobs and then to confirm your choice by pressing ENTER. The numbers are introduced digit by digit. 1 LANGUAGE Choose your language (English, French, Dutch, German) 2 3 SUPPLY? xx C (NV) WORKING MODE 4 m³h K1? 5 m³h K2? 6 m³h K3? 7 %EXH/SUP 8 PRESSURE ALARM? If a post heating water coil (option) is mounted in the unit, introduce the assignment T for the supply airflow. See details in 4.6. Select from,, Type in supply airflow 1 (will be activated if contact between K1 and +12V of i/o module closed or if position I on RC is selected) Type in supply airflow 2 (will be activated if contact between K2 and +12V of i/o module closed or if position II on RC is selected) Type in supply airflow 3 (will be activated if contact between K3 and +12V of i/o module closed or if position III on RC is selected) Type in ratio between exhaust (EXT) and supply (PUL) airflow to create over, under or even pressure. The pressure alarm is optional. If you do not wish it select N and skip to step 14. Otherwise select Y. For more details see P SUP Type in the pressure increment for the supply airflow. 10 P EXH Type in the pressure increment for the exhaust airflow. 11 INIT Pa REF? 12 m³h INIT 13 Pa REF INIT xxxx m³h xxxx Pa ALARM RESET? END SETUP Do you wish to (re-)configure the reference pressure for the supply and the exhaust airflows? Y or N. (this is optional if it has been done previously) If Y is selected, enter nominal airflow at which you wish to initialize the reference pressure. (same airflow for exhaust and supply air) Initializing the reference pressure After +/-1 minute, the system will memorize the calculated pressure value of the fan as the reference pressure. While initializing the airflow and pressure on F1 is displayed. Possibility to reset the alarms. Y or N? End 15

20 Operating mode with RC module master One of the 3 assignment constant airflows (m³h K1, m³h K2 et m³h K3) is selected using the I / II / III knobs of the RC. The selection made is highlighted by the corresponding LED on the RC. The exhaust airflow is equal to (%EXT/PUL) of the supply airflow. The OFF touch allows stopping the fans. It is also possible to start/stop the fans with an external contact connected to the i/o module: Caution: in this case terminals K1/K2/K3 of the i/o module NNOT be connected. Start / stop Closed = fans OFF Open = fans ON Operating mode with i/o module master One of the 3 assignment constant airflows (m³h K1, m³h K2 et m³h K3) is selected using the K1/K2/K3 terminals on the i/o module. The selection made is highlighted by the corresponding LED on the RC. The exhaust airflow is equal to (%EXT/PUL) of the supply airflow. Wiring diagrams for i/o module master i/o REC circuit a) Wiring 1 module to 3 external contacts i/o REC circuit K1 closed airflow m 3 h K1 K2 closed airflow m 3 h K2 K3 closed airflow m 3 h K3 K1/K2/K3 open softstop Caution K1/K2/K3: Use gold plated contacts only. 16

21 b) Wiring 1 module to an COM4 (PLC 4 positions switch) COM4 c) Wiring several i/o modules to 3 external contacts K1 closed airflow m 3 h K1 K2 closed airflow m 3 h K2 K3 closed airflow m 3 h K3 K1/K2/K3 open softstop Caution K1/K2/K3: Use gold plated contacts only. d) Wiring several i/o modules to 1 COM4 COM4 17

22 4.1.2 Mode : setup, operating instructions and wiring diagrams Setup mode The setup is made by means of the LCD screen and the 4 knobs SETUP,, and ENTER of the RC. To start the setup: - Enter in the setup mode using the left knob on the diagram so that the SETUP LED ignites - Press then the SETUP knob until the text SETUP appears on the screen. The idea is to select your choice with the knobs and then to confirm your choice by pressing ENTER. The numbers are introduced digit by digit. 1 LANGUAGE Choose your language (English, French, Dutch, German) 2 3 SUPPLY? 00 C (NV) WORKING MODE If a post heating water coil (option) is mounted in the unit, introduce the assignment T for the supply airflow. See details in 4.6. Select from,, 4 V min? Select minimum voltage value 5 V max? Select mum voltage value 6 m³/h Vmin Select constant airflow value for minimum voltage Vmin 7 m³/h Vmax Select constant airflow value for mum voltage Vmax 8 % on K3? 9 %EXH/SUP 10 PRESSURE ALARM? Select constant airflow multiplier when contact between terminals +12V and K3 is closed, or if position III is activated on the RC. Type in ratio between exhaust (EXT) and supply (PUL) airflow to create over, under or even pressure. The pressure alarm is optional. If you do not wish it select N and skip to step 16. Otherwise select Y. For more details see P SUP Type in the pressure increment for the supply airflow. 12 P EXH Type in the pressure increment for the exhaust airflow. 13 INIT Pa REF? 14 m³h INIT Pa REF INIT xxxx m³h xxxx Pa ALARM RESET? 17 END SETUP End Do you wish to (re-)configure the reference pressure for the supply and the exhaust airflows? Y or N. (this is optional if it has been done previously) If Y is selected, enter nominal airflow at which you wish to initialize the reference pressure. (same airflow for exhaust and supply air) Initializing the reference pressure After +/-1 minute, the system will memorize the calculated pressure value of the fan as the reference pressure. While initializing the airflow and pressure on F1 is displayed. Possibility to reset of the alarms. Y or N? 18

23 Operating mode with RC module master Starting/stopping the fan is carried out with knobs I/III and OFF. The assignment value for the supply constant airflow is a function of a 0-10V signal connected to terminals K2 and GND of the i/o module. The link between voltage and airflow is linear. The exhaust constant airflow is equal to %EXT/PUL of the supply airflow. (except if 2 separate 0-10V signals are used to determine exhaust and supply constant airflows, see advanced setup). By pressing knob III of the RC you activate the pre-set multiplier (% on K3). It is possible to start/stop the fans with an external contact connected to the i/o module (see diagram hereunder). Caution: terminals K1/K2/K3 of the i/o module NNOT be connected. i/o REC circuit Start / stop Closed = fans OFF Open = fans ON Caution: use gold plated contacts only a) Wiring diagram with 1 i/o module connected to 1 sensor i/o REC circuit (*) b) Wiring diagram with several i/o modules connected in parallel to 1 sensor Vdc (*) (*) K2 0-10V signal, mum impedance allowed: 1500 Ω 19

24 Operating mode with i/o module master The assignment value for the supply constant airflow is a function of a 0-10V signal connected to terminals K2 and GND of the i/o module. The link between voltage and airflow is linear. The exhaust constant airflow is equal to %EXT/PUL of the supply airflow. (except if 2 separate 0-10V signals are used to determine exhaust and supply constant airflows, see advanced setup). Starting/stopping the fans is carried out with entry K1 on the i/o module. The K3 entry of the i/o module can be used to activate the pre-set multiplier (% on K3). Wiring diagrams To locate i/o module see section 3.1 a) Wiring diagram with 1 i/o module (*) b) Wiring diagram with several i/o modules in parallel Vdc (*) (*) K1 closed soft start K1 open softstop K2 0-10V signal, mum impedance allowed: 1500 Ω K1+K3 closed % on K3 activated K3 open % on K3 inactive Caution: use gold plated contacts only 20

25 4.1.3 Mode : setup, operating instructions and wiring diagrams Setup mode The setup is made by means of the LCD screen and the 4 knobs SETUP,, and ENTER of the RC. To start the setup: - Enter in the setup mode using the left knob on the diagram so that the SETUP LED ignites - Press then the SETUP knob until the text SETUP appears on the screen. The idea is to select your choice with the knobs and then to confirm your choice by pressing ENTER. The numbers are introduced digit by digit. 1 LANGUAGE Choose your language (English, French, Dutch, German) SUPPLY? xx C (NV) WORKING MODE on SUPPLY 5 % on K3? If a post heating water coil (option) is mounted in the unit, introduce the assignment T for the supply airflow. See details in 4.6. Select from,, Select if you wish the constant pressure to operate on the exhaust or on the supply airflow. Input of multiplier on the assignment when contact between terminals +12V and K3 in the i/o module is closed or if knob III is activated on the RC 6 %EXH/SUP Type in ratio between exhaust (EXH) and supply (SUP) airflow to create over, under or even pressure. 7 INIT New initialization of the constant pressure assignment? Y or N REF? 8 INIT via If Y is selected in 7 then select if you want to initialize the reference automatically AIRFLOW? via the airflow or manually via the pressure value. If INIT via AIRFLOW (default): the unit automatically determines the reference pressure 9 m³h INIT Enter nominal airflow to determine assignment pressure. 10 INIT xx,x V xxxx m³h xxxx Pa Initializing of busy. After 1 minute the system will memorize the pressure measured by the sensor corresponding to the nominal airflow. Display of the actual airflow of the supply or exhaust fan (F1 or F3) and of the actual sensor value. 11 ALARM Possibility to reset the alarms Y or N RESET? 12 END The configuration of the system is finished. SETUP If INIT via PRESSURE (see advanced setup): the user determines the reference pressure 9 REF? Enter the assignment pressure value. xx,x V 10 ALARM Possibility to reset the alarms Y or N RESET? 11 END The configuration of the system is finished SETUP Note that the mode can be either active on the supply or the exhaust side of the unit (see 4, in table above): on SUPPLY air : The airflow delivered by the supply fans is automatically modulated to obtain a constant pressure as measured by the pressure sensor in the duct. The exhaust airflow is equals to %EXT/PUL of the supply airflow. on EXHAUST air : The airflow delivered by the exhaust fans is automatically modulated to obtain a constant pressure as measured by the pressure sensor in the duct. The supply airflow is equals to 1/(%EXT/PUL) of the exhaust airflow. 21

26 Operating mode with RC master The start/stop of the fans is controlled by knob I and OFF. The pressure sensor is connected between K2 and GND of the i/o module The III knob on the RC allows activating the airflow multiplier % on K3 on the airflow assignment. It is possible to start/stop the fans with an external contact connected to i/o module. In this case, terminals K1/K3 of the i/o module must not be connected! i/o REC circuit Start / stop Closed = fans OFF Open = fans ON Caution: use gold plated a) Wiring of 1 i/o module to 1 sensor i/o REC circuit (*) b) Wiring in parallel of several i/o modules to 1 sensor Vdc (*) (*) K2 0-10V signal, mum impedance allowed: 1500 Ω Operating with i/o module master The start/stop of the fans is controlled by entry K1 of the i/o module. The pressure sensor is connected between K2 and GND of the i/o module K3 on the i/o module can be used to activate the multiplier % on K3 on the airflow assignment 22

27 a) Wiring 1 i/o module to 1 sensor (*) b) Wiring several i/o modules in parallel to 1 sensor Vdc (*) K1 closed soft start K1 open softstop K2 0-10V signal, mum impedance allowed: 1500 Ω K1+K3 closed % on K3 activated K3 open % on K3 inactive Caution: use gold plated contacts only 4.2 Bypass control with s TAC3 control According to inside and outside temperatures, the control TAC3 will monitor the opening/closing of the 100% bypass damper. The by-pass is delivered completely wired and motorized from factory. No wiring or installation is required by the installer. The O.R.4 relay (SAT3 option) of the i/o REC print board indicates the opening / closing of the bypass. Operating description : Opening of 100% by-pass if all following conditions are met: - Outside T (sensor T1) < inside T (sensor T2) 1 C. - Outside T (sensor T1) > 15 C - Inside T (sensor T2) > 22 C. Closing of 100% by-pass if one of the following conditions is met: - Outside T (sensor T1) > inside T (sensor T2). - Outside T (sensor T1) < 14 C - Inside T (sensor T2) < 20 C. All these temperature SET values can be modified using ADVANCED SETUP. 23

28 4.3 Standard built in antifreeze protection of the heat exchanger This functionality is built in the standard control and must not be configured by the installer. It is automatically de-activated if an optional KWin pre-heater (see 4.4) is installed in the unit. Description: In order to avoid the risk of frosting the heat exchanger, the supply airflow is linked to the temperature value of the exhaust airflow measured after the heat exchanger (sensor T3). The exhaust airflow remains unchanged. T (S3) > +5 C: the assigned airflow is as defined by SETUP +1 C < T (T3) < +5 C : the airflow assigned by SETUP is automatically modified as follows : - If or working mode : the supply airflow will progressively drop down to 33% (AF low ) of the assigned airflow (AF n ) - If mode, the assigned pressure will drop to 50% (AF low ) of the assigned pressure (AF n ) - In these conditions LED AF is ON. T (T3) < +1 C : the supply airflow is stopped for as long as T (T3) < +1 C. In these conditions LED AF is blinking. All these temperature SET values can be modified using ADVANCED SETUP. Antifreeze diagram : S3 ( C) 5 C 1 C LED AF ON LED AF indicating AF low AF n 4.4 Antifreeze the heat exchanger with pre-heating KWin (option) The series features a fully automated pre-heating coil. Its capacity is modulated according to the actual heating requirements to avoid frosting the heat exchanger. The control automatically regulates the coil s capacity to maintain constant an assigned exhaust airflow temperature after the heat exchanger (value same as S3). The Kwin option is made of 3 parts: A regulator provided with a display: see picture below A solid state relay (SSR) to modulate the heating capacity of the coil A T sensor The 3 elements are delivered fully wired and mounted (plug and play) 24

29 4.4.1 Setup of the KWin pre-heating coil control The Kwin is full pre-configured: PID parameters as well as the assignment. If you need to modify the assignment: see Modifying the assigned floor T The assignment is pre-set in factory. It s then usually not necessary to modify it. Caution: if you modify the KWin assignment you have also to change the parameter T AF in the advanced setup of the TAC3. Make sure the unit is properly connected and is power supplied. Start the fans at nominal airflow (if or ) or pressure (if ). On the display, set the floor T not to be to be exceeded in the exhaust airflow after the heat exchanger. (the default value is +1 C): -Press P on the KWin regulator until SP1 appears on the display -Modify floor T value using knobs and -Press P to validate your choice. Display of actual T measurement Press to increase assignment T (press P first) Press to decrease assignment T (press P first) Press P to enter in the assignment configuration mode Indicates if actual T is lower ( ), equals ( ) or higher ( ) than assignment T LED indicating that regulator is ON and the coils are cycling to pre-heat the supply air. This means: - the actual T is < assigned floor T - AND thermal protections are not activated, - AND the fans are running, - AND the by-pass is closed Control features of the TAC3 The TAC3 control only allows the heating coil to be operated if the supply fans are in working. The post-ventilation feature (see advanced setup) is automatically activated: If the fans are requested to stop, the R3 relay is opened, and therefore the power supply to the coils is also shut down. The fans continue running for 90 seconds to insure post-ventilation of the electrical coils. If conditions make that the pre-heating coil KWin does not deliver enough capacity to reach the floor T assignment, and therefore not insuring the anti-frost duty, the control will modulate the in and out airflows as follows: 25

30 If T < -1 C and T < (floor T - 1,5 C), for more than 5 minutes: If and mode: reduction of in and outgoing airflows to 66% of the assigned airflows. If Mode: reduction to 75% of the assigned pressure. This setup is maintained during 15 minutes, after which the 100% airflow/pressure assignment is reestablished. Actions on RC Actions on i/o REC circuit Action on fans LED LED Pa LED Relay AL1 Relay R2 LED AF Display text ALARM ALARM on SAT3 (O.R.1) AF T ALARM REDUCED AIRFLOW RED / ON / / ON Assignment reduction If T < -5 C during 5 minutes the unit is stopped: Actions on RC Actions on i/o REC circuit Action on fans LED LED Pa LED Relay AL1 Relay R2 LED AF Display text ALARM ALARM on SAT3 (O.R.1) AF T ALARM STOP FANS RED / ON Alarm status / Blink Stopped Restart is made by resetting (see 4.12) 4.5 KWout post heating electrical coil control (option) The series features a fully automated post-heating electric coil (option). Its capacity is modulated according to the actual heating requirements to obtain a constant supply air temperature. The control automatically regulates the coil s capacity to maintain constant an assigned supply airflow temperature. The KWout is made of 4 parts: A regulator provided with a display: see picture below A solid state relay (SSR) to modulate the heating capacity of the coil A sinker to dissipate the heat produced by the SSR A T sensor The 4 elements are delivered fully wired and mounted (plug and play) 26

31 4.5.1 Setup of the KWout post-heating coil control Make sure the unit is properly connected and is power supplied. Start the fans at nominal airflow (if or ) or pressure (if ). On the KWout regulator, set the assigned air T, the temperature to be kept constant after the heating coil (caution: mum 50 C) - Press P on the regulator until SP1 appears on the display - Enter assignment T value using knobs and - Press P to validate your choice. Initializing the PID parameters: this is pre-set in factory. You should then not to have to change this. If you need to modify the PID parameters (for example if your T is not stable due to inappropriate PID parameters) This operation must be carried out in order to obtain a good dynamic behavior of the coil control: - Press U until Tune appears on the screen -The automatic initialization of the PID parameters starts. The red led is lit. DO NOT modify the airflow instructions during this phase (+/- 90 seconds). - When optimization of the PID parameters is done, the red led is off and the control directly starts to modulate the coils capacity to reach the previously assigned air temperature. - Once this initialization done, it is possible to modify the assignment T. LED blinks during initialization of PID parameters Actual T Press U to Start PID parameters initialization Increase assignment T value (press P before) Decrease assignment T value (press P before) Press P to enter assignment T configuration Indicates if actual T is lower ( ), equals ( ) or higher ( ) than assignment T LED indicating that regulator is ON and the coils are cycling to pre-heat the supply air. This means: - the actual T is < assigned floor T - AND thermal protections are not activated, - AND the fans are running, - AND the by-pass is closed Modification of the assigned floor T (caution: mum 50 C) To set the assignment T to be maintained constant by the KWwout control: - Press P on the KWout regulator until SP1 appears on the display - Modify assignment T value using knobs and. - Press P to validate your choice, and return to the actual T display by pressing P again 27

32 4.5.3 Control features of the TAC3 The TAC3 control only allows the heating coil to be operated if the supply fans are working. The post-ventilation feature (see advanced setup) is automatically activated: If the fans are requested to stop, the R3 relay is opened, and therefore the power supply to the coils is also shut down. The fans continue running for 90 seconds to insure post-ventilation of the electrical coils. It is possible to display the Supply air T on the screen of the RC if a T sensor T5 is connected to the i/o module (see ) It is possible to stop the post-heating with an external contact connected to IN6. (see ) 4.6 NV post heating of the supply air with a water coil (option) A NV post-heating water coil can be installed in the to maintain a pre-set air T. The actual capacity delivered is completely monitored by the control with the motorized 3-way valve (supplied, but to be installed by the installer). Control features of the TAC3 : Monitoring the 3-way valve to keep assignment T constant using supplied sensor T value. Engaging a relay to start a water circulator (output O.R.3 on i/o module - see ) Antifrost protection of the water coil based on the value of T4 (T sensor provided and pre-wired). If value T4 <1 C then the 3 way valve is opened and contact for circulator is closed (see ) during 15 minutes Possibility to stop the post-heating with an external contact connected to terminal (IN6) on the i/o module (see ). Assignment failure: see Sensor failure alarm : see Working with CT option If a damper (CT) is mounted on the the starting of the fans is temporized by 30 seconds to assure the opening of the damper before to start the fans. 4.8 Display on the RC a) Standard display By default, only airflow and fan pressure values as well as alarm status are displayed on the LCD. b) Display all the parameters Press on the left knob on the diagram so that the SETUP LED ignites By pressing and it is possible to display the status of all the working parameters: - type and built in options (CT, pre/post heating) - working mode and set values - airflow/pressure of each fan - pressure alarm setup (/ working mode only) - alarm status - status of K1/K2/K3 inputs on the i/o module - status of IN1/IN2/IN3/IN4/IN5/IN6/IN7/IN8 inputs on the i/o module - status of the bypass - status of the anti-freeze protection - T values of sensors 1/2/3/4/5 (4 and 5 = options) - status of the CT (option) 28

33 4.9 Fan failure alarm It is possible with a SAT3 mounted on the i/o module (option) to provide the fan status (control if actual delivered airflow > 20% of airflow assignment) or if they are stopped, using the R3 relay of one of the 2 SAT3 (O.R.2). This feature provides an increased safety with regard to the start instruction control, because there is a control on the fact that the fan is actually running (closed loop principle) Wiring diagram: 4.10 Actual airflow / pressure output signals A 0-10V signal representing the actual airflow or the actual pressure delivered by one of the selected fans with a linear relation is a standard feature. The output signals are located between terminals OUT3/OUT4 and GND on the i/o module. Default setup : OUT3 = airflow fan 1 (supply fan) and OUT4 = pressure fan 1 (supply fan). Table link between 0-10V signal and actual pressure or airflow value. (Linear equation) Pressure (Pa) 0 V V Airflow (m3/h) 0 V V (*) (*) airflow per fan. You can also take the total airflow: 10V = 4800 m³/h Via the advanced setup it is possible to connect any of these 2 OUT signals to the airflow or pressure value of any fans. 29

34 Wiring diagram of output signals: default: OUT3 = actual airflow of fan 1 (supply) default: OUT4 = actual pressure of fan 1 (supply) 4.11 Advanced setup Warning: using this feature requires a good knowledge of the control system. The advanced configuration allows modifying the parameters not present in the basic configuration: - Stop fans is pressure alarm activated - Fans start torque - Fire alarm configuration - Bypass T - Airflow if bypass open - AF (anti-freeze) configuration - NV speed (option if NV installed) - In mode : stop of the fans if Vin < and/or > set value(s) - In mode : - positive or negative logical - reaction speed of the algorithm - OUT3/OUT4 definition - Post-ventilation configuration - Fan run time configuration - Display alarms only - Access code configuration - Factory reset 30

35 4.12 Alarms Alarm types Type 1: Alarm indicating a fan failure (1). This alarm indicates a failure of fan Fx. This problem is usually caused by the motor. If not the failure can be caused by an internal cable or a control. See 1 in table below. Type 2: Alarm on the pressure variation ( and modes only). This alarm indicates a pre-established pressure level has been reached on fan Fx. See 2 in table below. Type 3: Alarm indicating a problem while initializing reference pressure for a pressure alarm (1). 3 possibilities (See 3 in table below) : - Actual airflow < requested airflow : The requested working point is too high (too much pressure) for the mal available pressure at the requested airflow for this fan. - Actual airflow > requested airflow: the nominal airflow requested to initialize the pressure alarm cannot be reached because the lower limit of the fan s operating zone has been reached. - Very unstable pressure (pumping). See 3 in table below. Pa réf cannot be identified and the fans are stopped. Press RESET using SETUP on the RC, or with the RESET key on the i/o module. - If it occurs during initializing an alarm pressure 2 options: 1. No action is taken: the control will operate without pressure alarm 2. Corrective action is taken (change the working point to one well located in the working zone of the fan, by reducing the pressure system, modifying the nominal airflow, ) and restart the setup operation. - If it occurs during initializing of the assignment pressure in CP mode : A corrective action must be taken (change the working point to one well located in the working zone of the fan, by reducing the pressure system, modifying the nominal airflow, ) and restart the setup operation. Type 4: Alarm indicating the system cannot fulfill the assignment (1). The assignment (keeping a certain airflow or a certain pressure constant) cannot be fulfilled because the upper or lower limit of the fan s working zone has been reached. See 4 in table below. Type 5: Alarm indicating a data failure in the control circuit Crucial data from the circuit board has been lost. Try a TOTAL RESET of the data using the advanced setup (see website). If still not solved send the defect RC for reprogramming. See 5 in table below. Type 6: Fire Alarm with an external contact connected to a fire detection system See 6 in table below and paragraph Type 7: Alarm indicating maintenance is expected. (for configuration see advanced setup) SERVICE ALARM: indicates the fan operating time (in hours) has exceeded a certain limit set during the configuration.. STOP FAN: indicates the fan operating time (in hours) has exceeded a certain limit set during the configuration. This alarm stops the fans. See 7 in table below. Type 8: Alarm indicating a communication breakdown between RC, i/o module and central circuit CBr4. Verify if the wirings are correct. See 8 in table below. 31