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Giacomini KDVRWY300 Manual

Duct-type air treatment unit with air exchange and heat recovery
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KDVRWY300 DUCT-TYPE AIR TREATMENT UNIT WITH AIR EXCHANGE
AND HEAT RECOVERY
INDEX
12/2021
page
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Summary of Contents for Giacomini KDVRWY300

  • Page 1: Table Of Contents

    KDVRWY300 DUCT-TYPE AIR TREATMENT UNIT WITH AIR EXCHANGE AND HEAT RECOVERY 12/2021 INDEX page TRANSPORT AND STORAGE DESCRIPTION AND MAIN COMPONENTS OF THE UNIT DIMENSIONS INSTALLATION CONNECTIONS OPERATION DESCRIPTION START UP AND TESTING CONTROL PANEL DIAGNOSTICS MAINTENANCE...

  • Page 2: Transport And Storage

    PACKAGE CONTENT The KDVRWY300 unit is packed on wood pallets and protected by a carton box. The package includes: 1 KDVRWY300 unit; − 1 user and maintenance manual − Package dimensions: 820x1220x 540(h) mm; Gross weight: kg 80 TRANSPORT AND STORAGE IMPORTANT: The parcel must travel on a pallet and be handled with mechanical means;...
  • Page 3 fig. 1 LEGEND a) Air delivery; b) delivery fan; c) ejection fan; d) foul air ejection; e) room air recirculation; f) exchange air vacuum; g) foul air vacuum; h) damper for separation from external environment; recirculation flow damper; heat recuperator; m) finned coils unit;...

  • Page 4: Dimensions

    DIMENSIONS INSTALLATION SAFETY NOTES Installation and maintenance should be performed by qualified operators only. Hydraulic and electric systems as well as the installation sites should comply with the safety rules in force in the competent country. Before any intervention, read thoroughly the instructions of this user manual.
  • Page 5 Preliminary requirements for installation Before installing the unit, prepare: the delivery and return water pipes of the radiant system with two shut-off valves for dissection of the line; the condensed water drain; two separate siphons are required, each for its own drain and to prevent air vacuum from the drain pipe;...

  • Page 6: Connections

    CONNECTIONS LEGEND 1 – chilled water inlet; 2 – chilled water outlet; 3 – summer condensation drain; 4 – winter condensation drain; 5 – room air delivery; 6 – room air recirculation 7 – foul air ejection; 8 – air exchange inlet; 9 –...
  • Page 7 Aeraulic connections The unit includes nuzzles with gaskets for connection of the ducts: delivery and recirculation Ø 160 air exchange and ejection Ø 125 WC/kitchen recovery air Ø 125 ELECTRIC CONNECTIONS WIRE SECTION The electric supply line and the section devices must be planned by qualified electric planners; the wire must in any case feature a 3x1,5 sq.
  • Page 8 CONTROL PANEL CONNECTION For proper operation of the serial communication line between the control panel and the KDVRWY300 unit, a 120 Ohm, ¼ W, terminal resistance must be installed between terminals A and B of the control panel. This should be fitted with tape on the back of the control panel in the groove provided for the...

  • Page 9: Operation Description

    OPERATION DESCRIPTION The picture below shows the unit plan with the main internal components and air flows. 1 - Air/air heat recuperator 2 - Cooling compressor; 3 - water-supplied finned coil; 4 - Cooling evaporator; 5 - Freon/air condenser; 6 - Freon/water plate condenser; 7 - Delivery fan;...
  • Page 10 THERMAL-HYGROMETRIC OPERATION EJECTI ON AIR INFLOW 2 - Cooling compressor; 3 - Water-supplied finned coil; 4 - Cooling evaporator; 5 - Freon/air condenser; 6 - Freon/water plate condenser; 7 - Delivery fan; PCB - Electronic control card; E - Electronic expansion valve. COOLING The finned coil (3), connected to the radiant hydraulic system, provides summer cooling or winter heating;...
  • Page 11 TECHINCAL DATA Electric power V/Ph/Hz 230/ 1/50 Weight l/24h 44,9 Total dehumidification capacity (external environment 35 °C, 50% R.H.) 1083 l/24h 25,9 Useful dehumidification capacity (referred to recirculation, room at 26 °C, 55% R.H.) Useful cooling capacity 1050 (referred to recirculation, room at 26 °C, 55% R.H.) Electric power absorbed by the compressor Water flow rate required Water circuit loss of pressure...
  • Page 12 SUMMER, dehumidification/integration during recirculation (300m3/h) cooling power power required by room delivery cooling water cooling condition water compress ° C - %RH temp. or electric sensible latent latent l/day dehumidific int. max °C power ation total 2128 1455 23,2 1129 2552 24 –...

  • Page 13: Start Up And Testing

    START UP AND TESTING Before starting up the unit, carry out all hydraulic, aeraulic and electric connections. Also make sure chilled water is available and that there are no water leaks from the connections and unit. Check the tension on the electronic card: a red led will turn on when tension is present. As soon as the tension is available, a solid green led will turn on for 90 seconds along with the red one.
  • Page 14 SUMMER OPERATION MODES EXCHANGE ONLY Damper 10 is closed, damper 9 (when available) is open, both fans are ON and the water-supplied coil cools the exchange air. The flow rate can be set between 80 and 160 mc/h. The water flow rate can be adjusted through external 3-way...
  • Page 15 WINTER OPERATION MODES EXCHANGE ONLY Damper 10 is closed, damper 9 (when available) is open, both fans are ON and the water-supplied coil heats the exchange air. The air flow rate can be set between 80 and 160 m3/h. The water flow rate can be adjusted through an external 3-way...

  • Page 16: Control Panel

    CONTROL PANEL The remote control panel should be installed on a guide DIN in a wall-mount electric board; the space encumbered corresponds to 6 modules. The control panel includes 3 terminal strips for: connection of the unit with 4 threads to feed the panel (24VDC) and enable serial communication with the electronic card;...
  • Page 17 Heating : Displayed instead of cooling when winter is selected; the delivery temperature, obtained through the water-supplied coil, is the one provided for winter integration. Note: An external setting valve (optional) must be included to add integration to the KDVRWY300 unit.
  • Page 18 HOW TO USE THE CONTROL PANEL The control panel is provided with five buttons: to enter a new screen or move to the right; to return to the previous screen or move to the left; to move up or increase the selected value;...
  • Page 19 MENU SCREEN From the initial screen press to access the menu screen: Manual controls Exchange Times Attenuation Times Settings Tech. Menu screen MANUAL CONTROLS The unit functions can be activated through the keypad instead of digital inputs by entering the desired function and operational duration.
  • Page 20 TIME SLOT SETTING The user can set time slots for the automatic activation of exchange and air flow rate attenuation; attenuation is a convenient function to reduce the noise from air movement. HOW TO SET A TIME SLOT From the menu screen, select “Exchange hours” or “Attenuation hours” based on the desired function and press There are 4 time slots, each with a start time and start time...
  • Page 21 Flow rates: This menu entry is the flow rate submenu. Flow rate Norm: Att.: Exch. FreeC. The setting can be entered separately: exchange flow rates (Exch.) from 80 to 160 m3/h; room flow rates (Room), from 200 to 300 m3/h; All flow rates can be set in the normal (Norm.) or attenuation mode (Att.).

  • Page 22: Diagnostics

    No code alarm is displayed when the filters are dirty but a caption appears on the first line, “Filter cleaning”. Filter relay (enabled/disabled): This enables the activation of the alarm relay when the controller reads one or multiple clogged air filters. FILTER RESET Filter Reset Procedure...

  • Page 23: Maintenance

    Alarm messages Message Meaning Alarm: 1 Unit with no cooling gas - permanent alarm Alarm: 2 Stoppage for max cooling pressure - permanent alarm Alarm: 4 Stoppage for compressor high temperature Alarm: 8 BUS communication error Alarm: 32 Stoppage for high temperature of delivery water Alarm: 64 Stop of room delivery fan Alarm: 128...
  • Page 24 Waste Electrical and Electronic Equipment. Abandonment in the environment or illegal disposal of the product is punishable by law. GIACOMINI S.p.A. Via per Alzo, 39 - 28017 San Maurizio D’Opaglio (NO) - ITALY +39 (0)322 923111...
  • Page 25 KDVRAY360 DUCT-TYPE AIR TREATMENT UNIT WITH AIR EXCHANGE AND HEAT RECOVERY 05/2022 INDEX TRANSPORT AND STORAGE DIMENSIONS INSTALLATION CONNECTIONS OPERATION DESCRIPTION START UP AND TESTING CONTROL PANEL DIAGNOSTICS MAINTENANCE DEMOLITION AND DISPOSAL...

  • Page 26: Transport And Storage

    PACKAGE CONTENT The KDVRAY360 unit is packed on wood pallets and protected by a carton box. The package includes: 1 KDVRAY360 unit; − 1 user and maintenance manual − Package dimensions: cm 93x137x 43(h); Gross weight: kg 98 TRANSPORT AND STORAGE IMPORTANT: The parcel must travel on a pallet and be handled with mechanical means;...
  • Page 27 The galvanized metal sheet frame of the unit contains the finned coils for air treatment, the cooling circuit for dehumidification, the vacuum air filter, the condensation collection tray, the delivery fan and the electric switchboard for control and management. LEGEND a) air delivery;...

  • Page 28: Dimensions

    DIMENSIONS INSTALLATION SAFETY NOTES Installation and maintenance should be performed by qualified operators only. Hydraulic and electric systems as well as the installation sites should comply with the safety rules in force in the competent country. Before any intervention, read thoroughly the instructions of this user manual.
  • Page 29 Preliminary requirements for installation Before installing the unit, prepare: the delivery and return water pipes of the radiant system with two shut-off valves for dissection of the line; the condensed water drain; two separate siphons are required, each for its own drain and to prevent air vacuum from the drain pipe;...

  • Page 30: Connections

    CONNECTIONS LEGEND 1 – cold/hot water inlet; 2 – cold/hot water outlet; 3 – summer condensation drain; 4 – winter condensation drain; 5 – room air delivery; 6 – room air recirculation 7 – foul air ejection; 8 – air exchange inlet; 9 –...
  • Page 31 Aeraulic connections The unit is provided with plastic nozzles with gaskets, jutting out for about 4 cm to fit the flexible or rigid ducts; these must be equipped with gaskets to prevent air leaks and undesired noise. Nozzle diameters: delivery and recirculation Ø...
  • Page 32 CONTROL PANEL CONNECTION Should the serial communication line between the control panel and the KDVRAY360 unit be longer than 25 m, a 120 Ohm, ¼ W, terminal resistance must be installed between terminals A and B of the control panel. The resistance should be fitted with tape on the back of the control panel, in the groove provided for the guide DIN.

  • Page 33: Operation Description

    OPERATION DESCRIPTION The picture below shows the unit plan with its main internal components and air flows. 1 - Air/air heat recuperator 2 - Cooling compressor; 3 - water-supplied finned coil; 4 - Cooling evaporator; - Freon/air condenser; - Freon/air exhaust condenser; 7 - Room delivery fan;...
  • Page 34 COOLING CIRCUIT OPERATION AIR IN EJECTION INFLOW 2 - Cooling compressor; 3 - Water-supplied finned coil; 4 - Cooling evaporator; 5- Freon/air condenser; 6– Freon/water condenser for dissipation in ejection air; 7- Room delivery fan; PCB - Control electronic card; E - Electronic expansion valve.
  • Page 35 TECHINCAL DATA Electric power V/Ph/Hz 230/1/50 Weight l/24h Total dehumidification capacity (external environment 35 ° C, 50% R.H.) 1620 l/24h Useful dehumidification capacity (referred to recirculation, room at 26 ° C, 55% R.H.) Useful cooling capacity (referred to 1460 recirculation, room at 26 ° C, 55% R.H.) Nominal electric power absorbed Electric power absorbed by the compressor Water flow rate required...

  • Page 36: Start Up And Testing

    START UP AND TESTING Before starting up the unit, carry out all hydraulic, aeraulic and electric connections. Also make sure chilled water is available and that there are no water leaks from the connections and unit. The electronic card has a red led and a green led that show the general status of the unit. When tension is available, the green led turns on for about 90 seconds while the card performs the controls.
  • Page 37 SUMMER OPERATION MODES EXCHANGE ONLY Both fans are working and perform air exchange: the external air is chilled first by the recuperator through the ejected air and then by the chilled water of the finned coil DEHUMIDIFICATION ONLY The compressor and the delivery fan are working;...
  • Page 38 HEAT RECUPERATOR BYPASS Both fans are working, the damper of the inflow external air closed bypass damper is open. The chilled water coil treats the inflow air. The air flow rate can be set between 90 and 220 mc/h. WINTER OPERATION MODES EXCHANGE ONLY Both fans are working and perform air exchange: the...
  • Page 39 EXCHANGE + RECIRCULATION The fans are both on. The inflow air is heated by the water-fed coil. The exchange air is preheated by the ejected through recuperator. The inflow air flow rate can be set between 90 and 360 m3/h, while the exchange share can be set between 90 and 220 m3/h WINTER FREE-COOLING...

  • Page 40: Control Panel

    CONTROL PANEL – INSTALLATION AND USE The remote control panel should be installed on a guide DIN in a wall-mount electric board; the space encumbered corresponds to 6 modules. The control panel includes 3 terminal strips for: connection of the unit with 4 threads to feed the panel (24VDC) and enable serial communication with the electronic card;...
  • Page 41 FUNCTIONS AVAILABLE FOR AIR TREATMENT Exchange: Air exchange with the corresponding flow rate, using the heat recuperator; Cooling: Displayed when summer is selected; the dehumidification cooling compressor is turned ON and the delivery temperature will be the same provided for the cooling integration settings.
  • Page 42 HOW TO USE THE CONTROL PANEL The control panel is provided with five buttons: to enter a new screen or move to the right; to return to the previous screen or move to the left; to move up or increase the selected value;...
  • Page 43 DEACTIVATION From the initial screen press to access the menu screen: Manual controls Select “Settings” and press Exchange Times Attenuation Times Settings Menu screen Unit Deactivation To turn the unit off, select “unit deactivation” and Set the Time Set press to access the unit status screen the Season Setting Screen...
  • Page 44 TIME SLOT SETTING The user can set time slots for the automatic activation of exchange and air flow rate attenuation; attenuation is a convenient function to reduce the noise from air movement. HOW TO SET A TIME SLOT From the menu screen, select “Exchange hours” or “Attenuation hours” based on the desired function and press There are 4 time slots, each with a start time and start time...
  • Page 45 Flow rates: This menu entry is the air flow rate submenu. Flow Norm. Att. rate Exch. Room FreeC. The setting can be entered separately: exchange flow rates (Exch.) from 90 to 220 m3/h; room flow rates (Room), from 220 to 360 m3/h; All flow rates can be set in the normal (Norm.) or attenuation mode (Att.).

  • Page 46: Diagnostics

    DIAGNOSTICS The control panel displays the alarm and failure signals sent by the electronic card on the unit. There are two types of messages and they are all coded with a multiple of 2: Failure messages signaling a failing sensor; Alarm messages signaling an anomalous operational condition.

  • Page 47: Maintenance

    MAINTENANCE Periodical maintenance consists of cleaning the air filters. To remove and clean the filters: unscrew the knobs that lock the filter lid near the vacuum nozzle; remove the lid carefully; the filters can be removed and cleaned with water and soap or blown with compressed air.
  • Page 48 Waste Electrical and Electronic Equipment. Abandonment in the environment or illegal disposal of the product is punishable by law. GIACOMINI S.p.A. Via per Alzo, 39 - 28017 S.Maurizio D’Opaglio (NO) - ITALY tel. +39 0322 923111 - www.giacomini.com...
  • Page 49 AIR HANDLING UNIT FOR FRESH AIR VENTILATION, HEAT RECOVERY AND DEHUMIDIFICATION, MODEL KDVRAY500 05/2022 SUMMARY pag. TRANSPORT AND STORAGE MACHINE DESCRIPTION AND INTENDED USE DIMENSIONS POSITIONING AND FIXING CONNECTIONS CONTROL UNIT - CONNECTIONS CONTROL PANEL – USAGE DIAGNOSTICS ROUTINE MAINTENANCE...

  • Page 50: Transport And Storage

    KDVRAY500 MANUAL PACKAGE CONTENT The unit is packed on a wooden pallet and protected by a cardboard box. The packaging contains: 1 KDVRAY500 unit; − 1 use and maintenance manual. − Package size: cm 98x137x53(h); Gross weight: kg 115 TRANSPORT AND STORAGE The package shall be transported on pallets and moved by mechanical means;...
  • Page 51 KDVRAY500 MANUAL Components The following figure shows the machine from above, the main components and the air flows inside it. OUTDOOR INDOOR 1 - Heat recovery exchanger 2 - Compressor 3 - Water coil 4 - Evaporator coil 5 - Condensing coil 6 - Condensing coil for external heat transfer 7 - Inflow fan 8 - Discharge fan...
  • Page 52 KDVRAY500 MANUAL The following air treatments can be carried out: air renewal with high efficiency heat recovery, with possible winter heating or summer cooling; air renewal with free-cooling, without heat recovery, both in summer and in winter; air recirculation in winter, with possible heating; air recirculation in summer, with cooling and dehumidification;...

  • Page 53: Dimensions

    KDVRAY500 MANUAL DEHUMIDIFICATION AND COOLING The finned coil (3) supplied with the water coming from the radiant system, cools down the air, while the cooling evaporator (4) performs further cooling and dehumidification. The refrigeration circuit is made up of two condensers connected in parallel: in addition to the an air-cooled condenser (5) a second condenser is cooled by the outgoing air flow (6), thus releasing the condensation heat outwards.

  • Page 54: Positioning And Fixing

    KDVRAY500 MANUAL POSITIONING AND FIXING SAFETY WARNINGS Before working on the machine, carefully read the instructions given in this manual. Installation and maintenance must be carried out by qualified personnel only. Throughout installation, make sure that the equipment is not connected to the electrical mains. The machine shall be installed only inside the building and it must be protected from frost.
  • Page 55 KDVRAY500 MANUAL The machine must be installed inside buildings, in a horizontal position. Operation in an inclined position over 1% can lead to water leaks or damage to internal devices.. Minimum space allowances It is necessary to leave spaces free of obstacles around the machine according to the measurements indicated in the figure below.

  • Page 56: Connections

    KDVRAY500 MANUAL CONNECTIONS KEY TO SIMBOLS 1 - water inlet; 2 - water output; 3 - electrical connections; 4 - hydraulic circuit vent; 5 – dehumidifier condensation drain; 6 – winter recovery condensate drain; 7 - summer recovery condensate drain; 8 –...
  • Page 57 KDVRAY500 MANUAL Aeraulic connections The machine is equipped with plastic nozzles with gaskets, which protrude about 4 cm and which make it possible the connection with flexible or rigid ducts, provided that they are equipped with gaskets to avoid air leaks and unpleasant noise. Spigot diameters are as follows: supply and recirculation Ø...
  • Page 58 KDVRAY500 MANUAL CONNECTION OF THE CONTROL PANEL It is necessary to insert a termination resistance of 120 Ohm, ¼ W, between terminals A and B of the control panel. The resistance is fixed with adhesive tape on the back of the control panel, in the recess for the DIN rail.
  • Page 59 KDVRAY500 MANUAL TECHNICAL DATA Power supply V/Ph/Hz 230/1/50 Weight l/24h 74,1 Total condensation capacity (external air 35° C, 50% RH) 2090 l/24h 31,2 Condensation capacity on recirculation (internal air 26° C, 55% RH) Cooling capacity on recirculation 2580 (internal air 26° C, 55% RH) Rated electrical compressor power Water flow rate Pre-cooling water pressure drop...
  • Page 60 KDVRAY500 MANUAL START-UP AND COMMISSIONING All hydraulic, aeraulic and electrical connections must be carried out before starting up the machine. Check the availability of refrigerated water and the absence of water leakage from the connections and from the machine. The electronic control panel has a red LED and a green LED, which show the general status of the unit.
  • Page 61 KDVRAY500 MANUAL SUMMER OPERATING MODE FRESH AIR VENTILATION Both fans are running and carrying fresh ventilation: the outdoor air is cooled heat exchanger using exhaust air first, and then by OUTDOOR INDOOR refrigerated water circulating in the finned coil. AIR DEHUMIDIFICATION ONLY The compressor and the supply fan are running;...
  • Page 62 KDVRAY500 MANUAL RECOVERY HEAT EXCHANGER BYPASS The fans are both running, the intake air damper is closed and the bypass damper is open. The supply air can eventually be cooled by the chilled water coil water coil. OUTDOOR INDOOR The air flow rate can be set from 160 to 300 m3/h.
  • Page 63 KDVRAY500 MANUAL RENEWAL + RICIRCULATION The fans are both running. The intake air is heated in the recovery heat exchanger by mean the exhaust air, then air can be delivered at the requested temperature OUTDOOR INDOOR by the hot water coil. The supply air flow rate can be set from 300 to 500 m3/h, the renewal part of it can be...

  • Page 64: Control Unit - Connections

    KDVRAY500 MANUAL CONTROL UNIT - CONNECTIONS The control unit has to be placed into an electric panel and fixed on a DIN rail. The occuped space is 6 DIN modules. COMMUNICATION WITH HANDLING MACHINE Connectons between handling machine and control unit have to be made for energy supply (24VDC) and serial bus communication.
  • Page 65 KDVRAY500 MANUAL DIGITAL INPUTS TERMINAL STRIP AND ENABLED FUNCTIONS COM: common terminal for all digital inputs: DI01: season mode. The season mode is set as following: 1 = summer, 0 = winter, (note: season source must be set as DI instead of keyboard from menu). In winter mode the chiller part is disabled.

  • Page 66: Control Panel - Usage

    KDVRAY500 MANUAL CONTROL PANEL – USAGE By using the controller display it is possible: - To change the parameters; - To read the status of inputs and outputs at any moment; - To detect the alarm type in case of malfunctioning. To move through the various menu you can use the following buttons: to enter the sub menu, or to move right;...
  • Page 67 KDVRAY500 MANUAL TURNING OFF THE MACHINE From the home screen press to move to the menu screen: Manual Commands Select “Settings” and press Renewal Times Attenuation Times Settings Technical Settings Menu screen Shutting down On settings menu select “shutting down” and Set Time press to move on machine status screen.
  • Page 68 KDVRAY500 MANUAL TIME SLOTS SETTING The use of time slots allows the renewal function to start up automatically at the set times. As well you can do the same with attenuation mode function. Attenuation mode can be useful at night to decrease the wind noise, or when rooms are unoccupied; To set a time slot, position the cursor to the start time and press "E".
  • Page 69 KDVRAY500 MANUAL Airflows rates: you will find the following screen. Airflow Norm: Att: Renw. Tot. FreeC. You can set: renewal airflow rate (Renw.), from 80 up to 160 mc/h; intake air flow rate (Tot.), from 200 up to 300 mc/h; For each air flow rate you find a value (Norm.) used in standard operation and a reduced value (Att.) used in attenuation mode.

  • Page 70: Diagnostics

    KDVRAY500 MANUAL DIAGNOSTICS The control panel displays the alarm and fault messages communicated by the electronic board on the machine. The messages are all encoded with a multiple number of 2 and are of two types: - fault messages, indicate a malfunctioning sensor; - alarm messages, indicate an anomalous operating condition.

  • Page 71: Routine Maintenance

    KDVRAY500 MANUAL ROUTINE MAINTENANCE Routine maintenance involves the cleaning of the air filters. The filters should be checked every 90 days. To remove and clean the filters: unscrew the knobs that fix the filter cover, near the air spigots; remove the cover carefully; the filters can now be removed and cleaned using soap and water or by blowing with compressed air: periodic maintenance consists in cleaning the air filters.
  • Page 72 Vorschriften für Elektro- und Elektronik-Altgeräte hin. Das Ablagern in der Umwelt oder die illegale Entsorgung des Produkts ist strafbar. GIACOMINI S.p.A. Via per Alzo, 39 - 28017 S.Maurizio D’Opaglio (NO) - ITALY tel. +39 (0)322 92.31.11 fax +39 (0)322 96.256 - www.giacomini.com Pag. 24 of 24...

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