Installation and maintenance manual Manuel d installation et de maintenance R English Français Communicating Electronic Control for Fan Coil Units Régulation électronique communicante pour ventilo-convecteurs IOM AQN-W.GBF Date : April 23 / Avril 23 Supersedes / Annule et remplace : None / Aucun
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- General The Aqu@net electronic system has been specifically designed for wall mounted, ceiling mounted or cassette type fan coil units, all with full air recycling, for the following applications : 2 pipe cooling only, 2 pipe heating only, 2 pipe / 2 wire, 2 pipe reversible with or without additional electrical heating and 4 pipe installations. The system comprises an FCC ler integrated in the fan coil unit and an, capable of being fitted as an option to our entire range of low wall mounted fan coil units. Aqu@net is a new generation of communicating electronic via a proprietary bus using an easily installed additional PCB and a monitoring module known as µbms (refer to the manual relating to this monitoring module). Furthermore, in the case of small installations, this system enables a master / slave network to be created very easily by means of hardwired connections, and it enables up to 5 units to be led with a single. English 2 - The electronic system The Aqu@net electronic system has been designed to achieve an optimised compromise between running costs (heating valve for integral proportional ), ergonomics and performance. It is compatible with the µbms monitoring module and communicates via a proprietary bus, as well as being capable of operating without a monitoring module. The Aqu@net electronic system can be adapted to the following air conditioning system models : Model A Model B Model C Model D Model E : For 2 pipe heating only or cooling only fan coil units with manual changeover. : For 2 pipe reversible fan coil units with automatic changeover (pipe work probe). : For 2 pipe / 2 wire fan coil units. : For 2 pipe reversible fan coil units with automatic changeover (pipe work probe) and additional electrical heating. : For 4 pipe fan coil units. 2. - FCC ler description F/N Fan motor neutral. 2 EH2 N 2 electrical resistance phase. 2 5 7 8 VL N EH N N F/N EH2 3 4 EH VL 6 3 N 4 EH 5 EH N 6 7 8 VL N 9 N VL 2 Condensate lift pump supply neutral. N electrical resistance phase. N electrical resistance neutral. Condensate lift pump supply phase. N 2 electrical resistance neutral. Valve N neutral (Cooling or reversible valve). Valve N 2 neutral (Heating valve). Valve N phase (Cooling or reversible valve). Valve N 2 phase (Heating valve). Fan motor low speed phase. 9 2 3 4 N MIU 5 7 3 4 5 6 MIU 7 Fan motor medium speed phase. Fan motor high speed phase. Model plug configuration and location block. Connection for additional specific interface board. Input terminal block for normally open clock dry contact switch (open = occupation mode). 6 8 9 2 2 8 9 2 Input terminal block for normally closed window dry contact switch (open = window open). Special terminals (supplied shunted on the fan coil units) for connection to a condensate pump upper level contact switch. Intake air temperature, red connector and red wire always wired at factory. 4 3 2 2 Water pipe temperature, white connector, black wire, wired at factory for reversible systems.
2 - The electronic system (contd.) 2.2 - description The has been designed specifically for use with fan coil units equipped with the Aqu@net system. In no event can it be used with any other type of system. It operates independently on units equipped with an FCC ler, irrespective of the configuration (A, B, C, D, E). When the electrical connections have been made correctly, the digital display indicates the set temperature, the operating mode and the ventilation speed. NOTE : When the is mounted on a panelled unit, its blue connector is not plugged into the FCC ler. WARNING In the event of a power cut, the can retain and display operating mode, ventilation speed and set temperature data for minutes. Beyond minutes, the digital display is cleared and the data is lost. As soon as the power supply is re-established, the digital display reactivates itself in the last operating mode selected, but the data concerning the ambient temperature is always lost. Press the ON/OFF key twice to reactivate the complete system and recover the ambient temperature value. MODE By successive presses, this key enables the desired operating mode to be selected (according to the settings on the mode selection block - refer to page 3). Ventilation only mode. Cooling mode (Summer). Heating mode (Winter). Automatic operating mode selection (in Heating or Cooling mode). 5 Sending data to the FCC ler or blocked keypad signal. 2 3 4 2 By successive presses, this key enables the displayed temperature to be selected. A pictogram representing a house appears when the room temperature is displayed. If the house is not present, then the desired room temperature is being displayed. 3 By successive presses, this key enables the ventilation speed to be selected : - Low speed (2 bars) - Medium speed (4 bars) - High speed (6 bars) - Automatic speed (6 bars + AUTO) 4 TEMP These keys enable the desired temperature in the room to be raised or lowered (set temperature). 5 By successive presses, this key enables the fan coil units to be started or moved into standby mode. The standby/off status is indicated by a green LED. 7 P P2 P3 P4 6 GREEN LED On : Fan coil unit running. Off : Fan coil unit stopped. Slow flashing : Unoccupied mode activated. Rapid flashing: Condensate level alarm. Dimensions : H = cm, L = 6 cm, Depth =.5 cm. 7 DIPS - These DIP switches enable the to be configured in accordance with your system's application (Refer to page 3 for further details). To gain access to these DIP switches, the has to be carefully removed from its support bracket (refer to page 7). 2
2 - The electronic system (contd.) 2.3 - Configuring the various systems English The model plugs supplied on the block of the FCC and identified by different colours, enable the following systems to be obtained : Model A Model B Model C FCC ler : For 2 pipe heating only or cooling only fan coil units with manual changeover. : For 2 pipe reversible fan coil units with automatic changeover (pipe work probe). : For 2 pipe / 2 wire fan coil units. Model D : For 2 pipe reversible fan coil units with automatic changeover (pipe work probe) and electric heating. Model E : For 4 pipe fan coil units. Each model plug is specific to a chosen system. The and DIP switches must be set on the in accordance with the desired configuration type. factory settings : on, on with all modes accessible, including on unit mounted. VL N EH N N F/N EH EH2 VL Model plug location (different colours according to applications. (Refer to table below). DIP switches and settings accessible at the rear of the. (Refer to table below). N MIU 4 3 2 Model plug colour on FCC Action Water Accessible modes recommended setting probe Valve Ventilation Dip Dip Yes No Yes No Yes No Off Cool Heat Auto Fan Black 2 pipe / cooling only A X X X X X X X X Blue 2 pipe / cooling only IFC () A X X X X X X X Green 2 pipe / heating only A X X X X X X X X Green 2 pipe / heating only + PBTEE (2) A X X X X X X X X Red 2 pipe / heating only IFC () A X X X X X X X Red Application 2 pipe / heating only IFC () + PBTEE (2) System A X X X X X X X White 4 pipe E X X X X X X X X White 2 pipe reversible / 2 wire D X X X X X X X X X X Orange 2 pipe reversible B X X X X X X X X X X Orange 2 pipe / 2 wire C X X X X X X X X X X W/O plug 2 pipe reversible IFC () B X X X X X X X X X X () IFC : Independent Fan Control. The IFC mode signifies that the system is only performed on the ventilation function (without valve). (2) PBTEE : Inlet Water Low Temperature Protection (the protection cuts the ventilation function when the inlet water temperature is below 35 C and below that of the room temperature by + 5 K). 3
2 - The electronic system (contd.) 2.4 - Other configuration block settings VL N EH N N F/N EH EH2 N VL MIU J7J6 J5J4 Shunt reference J4 J5 J6 J7 J6 J7 No action Functions Only used with intake air temperature probe Used with internal probe Continuous fan operation (except when unit stopped) Cyclical fan operation on demand in heating and cooling (no fan operation in the neutral zone) Shunt presence YES YES NO YES NO NO YES 4 3 2 J6 J7 Cyclical fan operation on demand in heating and continuous fan operation in cooling mode NOTE : In all cases, the shunts J4, J6 and J7 are fitted at the factory. The shunt J5 is fitted at the factory on units fitted with an. In the case of wall mounting, it is recommended that the probe is used. YES YES The probe must be used in the case where several fan coil units are led by the same. 2.5 - Additional functions definition Functions obtained by dry electrical contact on the FCC ler : Window contact switch function : The FCC ler has 2 terminals (5 and 6) marked, intended to be connected to an opening contact switch for activating the window contact switch function (window closed = contact switch closed). The window contact switch function stops the fan coil unit (valve or electrical resistance cut) and moves the unit into cyclical ventilation mode with an anti-freezing heating temperature protection set at 8 C. IMPORTANT : In all cases, the electrical resistance post-ventilation function is maintained. Unoccupied function : The FCC ler has 2 terminals (7 and 8) marked, intended to be connected to a closing contact switch for activating the unoccupied function (contact switch closed = function activated). The aim of the unoccupied function is to replace the temperatures set by the user with factory-programmed set temperatures : - Cooling mode set temperature : 3 C. - Heating mode set temperature : 4 C. - Cyclical ventilation. Note : For savings in costs and materials, it is possible to use a single dry contact switch for several FCC lers (refer to example below). N VL VL N EH N N F/N EH EH2 N VL VL N EH N N F/N EH EH2 up to fan coil units MIU MIU 4 3 2 4 3 2 Maximum cable length : 5 metres, Ø between.4 and.65 mm. Shielded, twisted pair cable SYT AWG26 to AWG22. 4
3 - Electrical power supply and connection terminal blocks On the system, the FCC ler is supplied directly with 23 V / phase / 5 Hz current and pilots the under very low voltage. It comprises 6 terminal blocks as described below : - The first terminal block, known as the power supply block enables 23 V supply to be provided to the system. Each terminal is marked on the plastic cover with L for the phase, N for neutral and the ground symbol for ground. 2- The second terminal block is used for connecting the fan coil unit's constituent elements (fan, cooling mode valve, heating mode valve, electrical resistances etc.). The terminals are connected at the factory according to the requested application. 3- The third terminal block marked MIU is the location set aside for an additional communication PCB. 4- The fourth terminal block is provided for connecting the. There are two connection possibilities for this component : - The FCC is supplied with a ceiling type fan coil unit : In this case the is supplied as a kit. - The FCC is supplied with a low wall mounted type fan coil unit : In this case the is mounted on a bracket on the casing side opposite to the hydraulic connections side. 5- The fifth terminal block comprises 3 connectors marked as follows on the plastic cover: - : Water temperature probe. It is only fitted to B and D type systems. It enables mode changing in relation to water temperature that is measured via a probe on the pipe work. For this reason, special care must be taken when assembling this probe. This probe must be fitted with a 4 way valve and upstream of the valve on the water inlet (refer to diagram below). We recommend that the probe is fitted with an electrician's type collar, using contact paste and thermal insulation on the pipe work. Pipe work probe location FCC ler terminal blocks 2 - : Intake air temperature probe. The intake air temperature probe enables the fan coil unit to be led by the air temperature reigning around the unit. The major advantage of this system is that several units can be led with a single. This probe is connected at the factory in all cases and is installed on the fan air intake. - : Condensates upper level alarm probe. In the case of fan coil units, this connector is systematically supplied with a shunt and it not used. In the case of chilled water cassettes, this contact switch is connected to the condensates tray upper level contact switch. This switch's function is to shut down the cassette (ventilation and valve). Its operation is visualised by a rapid flashing of the LED on the. 6- The sixth terminal block has 4 terminals marked in pairs on the plastic cover as follows : - : Window contact switch (contact switch closed = window closed). For this reason, this contact is always supplied with a shunt. - : Enables the room unoccupied / occupied function to be activated via a dry contact switch (contact switch closed = unoccupied mode). For this reason this contact switch is always left free of potential. 4 3 6 5 English 5
4 - Fan coil unit wiring Master / slave hardwire network 23 V / Ph / 5 Hz power supply Max. number of fan coil units : 5 Maximum length : 3 metres Maximum cable length (between the and the furthest slave unit) : metres, with cable diameter between.4 and.65 mm. Shielded, twisted pair cable : SYT AWG26 to AWG22. This system enables a low cost master/slave system linking several fan coil units to be installed without the need for a communication bus and without addressing. Details of connection of the with the first FCC ler Unscrew the lower screw on the. Separate the from its support bracket with the help of a flat bladed screwdriver. 23 V / Ph / 5 Hz power supply FCC ler Maximum length : 3 metres Lower screw P4 P3 P2 P Cable diameter between.4 and.65 mm. Shielded, twisted pair cable : SYT AWG26 to AWG22. support bracket 6
5 - installation STEP Unscrew the lower screw on the. Separate the from its support bracket with the help of a flat bladed screwdriver. STEP 3 Make the electrical connections between the support bracket terminals and the FCC ler, and terminal of the blue connector to the terminal marked P, and the other terminals in turn. English Use cable of a diameter between.4 and.65 mm of the shielded, twisted pair type : SYT AWG 26 to AWG 22. The outside cable diameter must not exceed 5.5 mm Warning! Never run the power supply cable into the from underneath. Lower screw Never change the location of the blue connector with the outlets on the side. STEP 2 STEP 4 Set the DIP switches marked and in accordance with your configuration (2 pipe, 4 pipe, etc..) and the modes that are accessible. Refer to page 3 of this manual for selecting the required settings. Support bracket Checking the support bracket : Dips switches and for parameterisation Ensure that the wall surface is completely flat at the point where you wish to install the, as it is important that the support bracket is not twisted on installation, because any bending could lead to the not clipping together properly and result in operating difficulties. Fitting the support bracket : Present the support bracket to the desired location and align it with a spirit level. Mark the screw locations. Make a hole or install appropriate plugs according to the material (wood, concrete, plasterboard etc.). Screw the support bracket to the wall, preferably with round head screws matching the following characteristics : - Minimum length : 5 mm, - Maximum head diameter : 7 mm, - Maximum thread diameter : 3.5 mm, - Head protrusion : 3.5 mm. STEP 5 Lower screw Clip the onto the support bracket. Replace the lower screw in such a way that the is held firmly in place on the support bracket. The is now ready for use after connecting the mains power supply to the fan coil unit. 7
6 - Commissioning Synchronising the units under master / slave from an This operation must be performed if the or the FCC ler has been replaced, or in the case where one or several fan coil units have been electrically isolated. -Synchronisation operations description. Press the ON / OFF key. The green LED should light up. 2-3 Press the ON / OFF key. Check that the green LED goes out. If this is not the case, refer to paragraph 3. -2 Press the MODE key repeatedly until the ventilation (fan) symbol appears. 2-4 All the units must stop (within 5 to seconds). 2-5 Re-insert the blue connectors, following the polarities,2,3 and 4. Refer to diagram below. FCC ler Blue connector -3 Press the ventilation key until the High Speed ventilation symbol appears (6 bars). 3 2 4-4 Wait for 5 to seconds and check that all the units connected for master / slave on this are effectively running in High speed Ventilation mode. -5 If all the fan coil units are running in High speed ventilation mode then the check is complete as all the units are synchronised. If this is not so, move on to the following paragraph. 2 -Case where not all units are synchronised 2- Identify the non-synchronised units (those without the fan operating). 2-2 On the fan coil units that are not running, without turning off the power supply, unplug the blue connector from the FCC ler. (refer to diagram below). FCC ler Blue connector 3 2 4 2-6 Press the ON / OFF key once again. The green LED should light up. Check locally that all the units change into High Speed Ventilation mode after 5 to seconds. The fan coil units are synchronised. If this is not the case, refer to the following step 2.7. 2-7 Shut down the mains power supply to all the fan coil units wired in master / slave configuration to the and restart the procedure from Step.. 3 -Case where the green LED does not light up or does not go out when the ON/OFF key is pressed 3- If the green LED does not light up or does not go out, check the points listed in Chapter 5, Page 7 " installation" : a. Check that the is properly clipped onto the support bracket. b. Check the addressing of the wires between the support bracket terminal block and the FCC ler blue connector. c. Check that the wires linking the units are not damaged or broken. d. Check the condition of the connection prongs marked P to P4 on the back of the. 8
7 - General wiring diagrams System A COOLING ONLY valve action + VENTILATION 23V/Ph/5Hz System A HEATING ONLY valve action + VENTILATION English N L EH N N EH F/N EH2 VF VL N VL N BLUE CHESNUT BROWN BLACK TERMINAL BLOCK REF 224 LS 4 3 2 VF = Cooling valve = Intake air probe P Recommended and DIP switch settings on 23V/Ph/5Hz N L EH N N EH F/N EH2 VL N VL N VC BLUE CHESTNUT BROWN GREEN TERMINAL BLOCK REF 226 LS 4 3 2 VC = Heating valve = Intake air probe P Recommended and DIP switch settings on 9
7 - General wiring diagrams (contd.) System A COOLING ONLY + VENTILATION only 23V/Ph/5Hz VL N VL N EH N N F/N BLUE TERMINAL BLOCK REF 225 LS EH EH2 N L N VL N EH N N F/N 4 3 2 = Intake air probe P Recommended and DIP switch settings on System A HEATING ONLY + VENTILATION only 23V/Ph/5Hz VL TERMINAL BLOCK REF 227 LS EH EH2 N L 4 3 2 = Intake air probe P Recommended and DIP switch settings on
7 - General wiring diagrams (contd.) System A HEATING ONLY + VENTILATION only + water temperature probe 23V/Ph/5Hz L EH EH2 N VL N VL N EH N N F/N TERMINAL BLOCK REF 227 System A HEATING ONLY valve action + VENTILATION + water temperature probe English 23V/Ph/5Hz VC BLUE CHESTNUT BROWN LS N GREEN TERMINAL BLOCK REF 226 4 3 2 BLACK BLACK VL N EH N N EH N L F/N EH2 VL VC = Heating valve WTP = Water temperature probe = Intake air probe P LS Recommended and DIP switch settings on 4 3 2 P Recommended and DIP switch = Intake air probe WTP = Water temperature probe on settings
7 - General wiring diagrams (contd.) System B 2 PIPE REVERSIBLE valve action + VENTILATION 23V/Ph/5Hz EH EH2 V VL N VL N EH N N F/N BLUE CHESTNUT BROWN ORANGE TERMINAL BLOCK REF 229 LS BLACK BLACK N L 4 3 2 = Intake air probe V = Valve WTP = Water temperature probe P Recommended and DIP switch settings on System B 2 PIPE REVERSIBLE + VENTILATION only 23V/Ph/5Hz VL NO TERMINAL BLOCK N VL N EH N N F/N LS BLACK BLACK EH EH2 N L 4 3 2 = Intake air probe WTP = Water temperature probe P Recommended and DIP switch settings on 2
7 - General wiring diagrams (contd.) R2 23V/Ph/5Hz R LT VF BLUE CHESTNUT BROWN VL LS LT = Temperature limiter R = st stage electrical heating resistance R2 = 2 nd stage electrical heating resistance = Intake air probe VF = Cooling valve Maximum R and R2 output : 5 W R2 is only available as an option (refer to price list) English VL N N N EH N N EH F/N EH2 ORANGE TERMINAL BLOCK REF 229 L N F/N System C 2 PIPE / 2 WIRE 4 3 2 for 2 nd electrical heating resistance (if present) P Recommended and DIP switch settings on System D 2 PIPE REVERSIBLE / 2 WIRE R2 23V/Ph/5Hz R V LT N VL N EH N BLUE CHESTNUT BROWN LS BLACK BLACK N EH EH2 L VL WHITE TERMINAL BLOCK REF 228 4 3 2 R = st stage electrical heating resistance R2 = 2 nd stage electrical heating resistance WTP = Water temperature probe LT = Temperature limiter V = Valve = Intake air probe for 2 nd stage electrical heating resistance (if present) P Recommended and DIP switch settings on Maximum R and R2 output : 5 W R2 is only available as an option (refer to price list) 3
7 - General wiring diagrams (contd.) System E 4 PIPE VALVE action + VENTILATION 23V/Ph/5Hz VF BLUE CHESTNUT BROWN BLUE CHESTNUT BROWN N VL N EH N N F/N EH EH2 VL L N WHITE TERMINAL BLOCK REF 228 VC LS YELLOW / GREEEN 4 3 2 VF = Cooling valve VC = Heating valve = Intake air probe P Recommended and DIP switch settings on NOTE In all cases, always refer to the wiring diagram supplied with the fan coil unit 4
CE Compliance Declaration Under our own responsability, we declare that the product designated below complies with the provisions of the EEC directives listed hereafter and with the national legislation into which these directives have been transposed : Low Voltage Directive 73 / 23 / EEC Electro-magnetic Compatibility Directive 89 / 336 / EEC and that the following paragraphs of the harmonised standards have been applied : Déclaration CE de conformité Nous déclarons sous notre responsabilité que le produit désigné ci-dessous est conforme aux dispositions des directives CEE énoncées ci-après et aux législations nationales les transposant : Directive Basse Tension 73 / 23 / CEE Directive Compatibilité Electromagnétique 89 / 336 / CEE et que les paragraphes suivants des normes harmonisées ont été appliqués : EG-Konformitätserklärung Wir erklarën in eigener Verantwortung, das die in der vorliegenden Beschreibung angegebenen Produkte den Bestimungen der nachstehend erwähnten EG-Richtlinien und den nationalen Gesetzesvorschriffen entsprechen, in denen diese Richtinien umgesetz sind : Niederspannungsrichtlinie 73 / 23 / EG EMV- Richtlinie 89 / 336 / EG Und dass die folgeten Paragraphen der vereinheitlichen Noren angewandt Wurden : Dichiarazione CE di conformità Dichiariamo, assurmendone la responsasabilità, che i prodotti descritti nel presente manuale sono conformi alle disposizioni delle direttive CEE di cui sott e alle lagislazionni nazionali che li recepiscono : Direttiva Bassa Tensione 73 / 23 / CEE Direttiva Compatibilità Elettromagnetica 89 / 336 / CEE e sono stati applicati i seguenti pagrafi delle norme armonizzate : Declaración CE de conformidad Declaramos, bajo nuestra responsabilidad, que los productos designados en este manual son conformes a las disposiciones de las directivas CEE enunuciadas a continuacion, asi como a las legislaciones nacionales que las contemplan : Directiva Baja Tension 73 / 23 /CEE Directiva Compatibidad Electromagnética 89 / 336 / CEE y que se han aplicado los siguientes apartados de las normas armonizadas : NF EN 6 335- / 995 NF EN 6 335-2-4 / 994 NF EN 55 / 998 NF EN 55 4 / 997 NF EN 55 22 / 998 NF EN 6 / 998 III
R As part of our ongoing product improvement programme, our products are subject to change without prior notice. Non contractual photos. Dans un souci d'amélioration constante, nos produits peuvent être modifiés sans préavis. Photos non contractuelles. Wesper S.A. 42 cours Jean Jaurès 78 Pons France : +33-5 46 92 33 33 : +33-5 46 9 38 33 - +33-5 46 9 26 44 (Export Department) www.wesper.com