MAXA Hi-T2 Manual
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MAXA Hi-T2 Manual

Chillers and inverter air/water heat pumps with axial fans
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  • Page 2 European directives 2002/96 / EC and subsequent amendments 2003/108 / EC, inquiring at the Municipality of residence or at the retailer if the product is replaced with a similar one. NOTES: What is reported and described in this manual may not fully coincide with the device in question ("Hi-T2: LCD touch-screen centralized control for hydronic terminals combined with i-HWAK V4, i-SHWAK V4, i-32 V5 chillers , i-HP / i-HP LT, i-MAX, HWA1 ").

  • Page 3: Table Of Contents

    HOME PAGE ....................................9 3.4.1 CHILLER/HEAT PUMP PAGE ..............................10 3.4.2 FAN COIL PAGE ..................................13 3.4.3 AREA Hi-T2 ....................................14 3.4.4 ETHERNET CONNECTION CONFIGURATION ..........................14 SECOND MAIN PAGE ................................... 15 SYSTEM MAIN PAGE ..................................15 3.6.1 STATUS SETUP PAGE ................................16 3.6.2...
  • Page 4 PASSWORD AND PROTECTIONS ..............................34 REMOTE ACCESS ..............................34 SECURITY ..................................... 34 LOCAL WEB SERVER ..................................34 FIRMWARE UPDATE ............................37 HI-T2 CONFIGURATION PARAMETERS ........................37 FAN COIL CONFIGURATION PARAMETERS ......................41 DESCRIPTION OF RFC SYSTEM ..........................42 10 CONNECTION NETWORK ............................43...

  • Page 5: General Notes

    1.1 PERMITTED USE Hi-T2 is a touch screen remote control panel for centralised management of a network of chillers/heat pumps and RFC system. It can also be used for partial functions (i.e. as a remote control panel of a single chiller/heat pump or ambient temperature thermostat for managing the different zones).

  • Page 6: O Resources

    Hi-T2 Centralised controller 2 I/O RESOURCES 2.1 KEYBOARD PCB 2.1.1 LAYOUT INP. 12VAC RS485 ISOLATED RS485 CHILLER AND FAN SUPERVISION COIL NETWORK DIGITAL INP. Figure 1. Layout. 2.1.2 TOUCH-SCREEN USE The interface has a resistive touch-screen on the LCD with sensitive areas applied to the contextual content of the active screen.

  • Page 7: Connections

    Figure 2. Connections. 2.4 INSTALLATION The Hi-T2 controller can be fixed to the wall according to DIN 503 standard. On its back, there are some pre-drilled holes which can be removed by exerting the required force with a manual screwdriver, in order to get fixing holes.

  • Page 8: User Interface

    3.3 START PAGE Loading... Figure 4. Start page. When turning ON the Hi-T2 control panel, a splash screen appears with a logo to leave the time needed for loading the system.

  • Page 9: Home Page

    Hi-T2 Centralised controller 3.4 HOME PAGE The home page has the following appearance: logout Figure 5. Home page – indication meanings. From the home page it is possible to access the different device’s screens, by simply touching the displayed resource.

  • Page 10: Chiller/Heat Pump Page

    Hi-T2 Centralised controller Figure 7. Chiller/heat pump. Referring to the above figure, it is possible to obtain the following information: • presence of networked chillers (if touching the chiller you access the chiller screens); operating mode of the chiller (winter...
  • Page 11 Hi-T2 Centralised controller 1. Temperature detected in chillers (for a specific chiller): a. Air temperature (°C) b. Inlet water temperature (°C) c. Outlet water temperature (°C) 2. Status and operation mode for a specific chiller 3. Active/activable functions (in the scroll bar on the left) Sensitive areas (indicated by red boxes in the figure) in this page are: 4.
  • Page 12 Hi-T2 Centralised controller 3.4.1.3 CHILLER TOOLBAR AREA On the left side scroll bar there are icons that symbolise the active/activable functions in the chiller taken into account. In particular: Coloured icon = function enabled, Faded icon = function configured on the machine but not currently active.

  • Page 13: Fan Coil Page

    Hi-T2 Centralised controller 3.4.2 FAN COIL PAGE From the main page, by touching the fan coil symbol (sensitive area number 3, Figure 5), you can access the networked fan coils screen. From here you may access all the information on operation of the individual fan coils, identified by their zone and identification number of the single fan coil.

  • Page 14: Area Hi-T2

    (parameter 65, default port 80). Logging in with service/manufacturer permission, you can change the default addresses. A local web server is implemented to access the Hi-T2 from local area network with an HTML 4.01 compatible browser (see Paragraph 5.2).

  • Page 15: Second Main Page

    • Field 4 shows the ambient temperature and the relative humidity measured by the probes integrated in the Hi-T2 panel. • Field 5 indicates the presence of the solar panel system; then the indication on the temperature of the solar panels is shown.

  • Page 16: Status Setup Page

    Hi-T2 Centralised controller Above, from left to right: 1) STATUS SETUP; 2) SET-POINT SETUP; 3) PROGRAMS AND CHRONOTHERMOSTAT. At the bottom, from left to right: 4) SPECIAL FUNCTIONS; 5) CONFIGURATION; 6) HELP MENU. 3.6.1 STATUS SETUP PAGE Press the button to enter the “Status setup” page.

  • Page 17: Special Functions Page

    Hi-T2 Centralised controller PROGRAMS Chiller cooling Chiller heating Zone cooling Zone heating Legionella disinfection Sanitary Figure 19. “Programs” page. From this page you can separately set the weekly program of each chiller and fan coil zone. You can also program the legionella cycle and the production of domestic hot water, if enabled (see Paragraph 4.6.4).
  • Page 18 • configure the network, by pressing the button "Address configuration"; • configure zones, by pressing the button "Area Configuration"; • access the service parameters of the Chiller, Hi-T2 and fan coils, by pressing "Parameters"; • access the alarm history, by pressing on "Alarm log".

  • Page 19: Help Page

    4.1 NETWORK MANAGEMENT A network managed by the remote control Hi-T2 can be composed of a maximum of 7 chillers/heat pumps and a maximum of 80 fan coil units. As for the configuration of the network, you have the following functions as indicated below: fan coils addressing procedure;...

  • Page 20: Chiller/Heat Pumps Managment

    4.3 MANAGEMENT OF FAN COIL UNITS With the Hi-T2 remote control panel, we can manage up to 80 fan coils of our production equipped with an RFC module, divided into a maximum of 9 zones. Note that the fan coil settings can be done for individual zones (not for individual units). The main functions that can be adjusted are: ON/OFF (of the system and/or of the zone with relative scheduler);...

  • Page 21: Assignment Of The Fan Coils To The Zones And Zone Name Customisation

    When the zones have been configured and the fan coils associated, you may proceed with the “first start-up” of the connected units. With just one touch, you may switch on or off the entire system from the single Hi-T2 keyboard or switch on the chillers and manage the zones individually.

  • Page 22: Switching On/Off Dhw Mode

    THERMOSTAT Note: once the status is set from the Hi-T2 control panel, you must wait about a minute to ensure that communication with the on- board controls of the units in the network is successful and the units themselves are activated in the set status.

  • Page 23: Set-Point Set-Up

    MANUAL ECO Note: once the DHW status is set from the Hi-T2 control panel, you must wait about a minute to ensure that communication with the on-board controls of the units in the network is successful and the units themselves are activated in the set status.
  • Page 24 Hi-T2 Centralised controller CHILLER CHILLER WINTER SUMMER DHW setting DHW Preparator setting Eco water setting Water setting Water setting Eco water setting Change the set value using the up and down arrows within the indicated maximum and minimum limits and then confirm...

  • Page 25: Programs Setup (Chronothermostat)

    Hi-T2 Centralised controller 4.6.4 PROGRAMS SETUP (CHRONOTHERMOSTAT) The chronothermostat programming takes place separately from the chillers and fan coil terminal units: so it is necessary to program both the switching on and off of the chillers, and the switching on and off of the zones to which the fan coils are associated;...
  • Page 26 Hi-T2 Centralised controller • select the day whose programming you want to copy; • press the copy icon • select the day on which you want to copy the scheduling; • press the paste icon 3. It is possible to erase the programming of certain days or of all days, to do this: •...

  • Page 27: Room Thermostat

    The programmed cycle finishes. 4.6.5 ROOM THERMOSTAT The Hi-T2 control panel can operate as a typical room thermostat. Zone 1 is always present. The room thermostat function will be enabled/disabled for each zone using the corresponding button at the bottom of the zone status setting screen.

  • Page 28: Keyboard Setting Procedure

    The call of the room thermostat shall be active when the setpoint of the zone is not reached, the heat pump is enabled for operation. The call of the room thermostat is disabled when the temperature detected by the Hi-T2 thermostat is greater than the zone setpoint, and the heat pump is in standby mode.

  • Page 29: Diagnostic Errors

    The humidistat function is instead carried out directly by the Hi-T2 remote control panel, by means of its integrated probes and the logic internally implemented related to the control of dew point and dehumidification.

  • Page 30: Dew Point Control

    The parameters tAr, odr and Hy are set in the factory and cannot be changed. Given the environmental temperature and humidity, the Hi-T2 remote control calculates the dew point. With plant operating in summer mode, with a double setpoint function active on chillers and temperature control normally performed with radiant panels (second work setting), a controller is activated to maintain the dewpoint temperature at least at an amount defined by the keyboard service parameter Par42: "Dew-point temp.

  • Page 31: Climatic Compensation

    If you need to enable this function from Hi-T2 control panel, please be sure that, the dynamic setpoint parameter “b08” is disabled (=0) on the chillers (System’s main page -> Configuration -> Service (maintenance) menu -> Parameters -> Chiller -> Chiller’s name ->...
  • Page 32 Hi-T2 Centralised controller CHILLER’S CLIMATIC COMPENSATION • By setting the coefficients m1, m2, m3, m4 (parameters 13, 14, 15, 16) to a non-zero value, the “Offset” item appears on the “Set -> Chiller” menu. m1 and m2 are the cooling operation coffecients: m1 sets the slope for values lower than (Set T ) the external temp.

  • Page 33: Other Functions

    4.11 OTHER FUNCTIONS For any information related to other functions of the chillers or fan coil units that are reported in the display of Hi-T2 remote control panel (e.g. enabling or activation of plant electrical heater, DHW integration heater, boiler integration, defrosting cycle, water-side or air-side anti-freeze heaters, etc…), please refer to chiller and fan coil instruction manuals.

  • Page 34: Password And Protections

    LOCAL WEB SERVER A local web-server has been implemented to access to Hi-T2 from the local network with a browser HTML 4.01 compatible. To access check on page “Ethernet Configuration” accessible from the home page by pressing the following icon: Logging in with service/manufacturer permission, you can change the default addresses.
  • Page 35 The indications on Status, Season and active Alarms are those of the entire system. The room temperature and the relative humidity are the ones measured by the probes integrated inside the current Hi-T2. To shift to next available pages, click on the links at the page bottom.
  • Page 36 Figure 40. Hi-T2 Ethernet "Set-point” page. The set-points set by Hi-T2 are available on the “Setpoint” page in read-only mode. The setpoints set for the winter season appear under “Winter” (Water setpoint, Economy water setpoint and, if the double setpoint is enabled, Second water setpoint and Second economy water setpoint), while the setpoints set for the summer season appear under “Summer”...

  • Page 37: Firmware Update

    Centralised controller 6 FIRMWARE UPDATE By pressing the symbol at the top right of the home page showing Hi-T2, it is possible to see the current firmware version installed in the touch-screen. In case of firmware update, it is possible to make the upgrade by means of a USB key, using the on-board USB port.
  • Page 38 1 = Minimum temp. of the fan coils of the zone 2 = Maximum temp. of the fan coils of the zone 3 = Temperature measured by Hi-T2 Regulation temperature in zone 2 winter 0 = Average temp. of the fan coils of the zone 1 = Minimum temp.
  • Page 39 1 = Minimum temp. of the fan coils of the zone 2 = Maximum temp. of the fan coils of the zone 3 = Temperature measured by Hi-T2 Regulation temperature in zone 7 winter 0 = Average temp. of the fan coils of the zone 1 = Minimum temp.
  • Page 40 1 = Minimum temp. of the fan coils of the zone 2 = Maximum temp. of the fan coils of the zone 3 = Temperature measured by Hi-T2 Regulation temperature in zone 8 summer 0 = Average temp. of the fan coils of the zone 1 = Minimum temp.

  • Page 41: Fan Coil Configuration Parameters

    NB: Please make reference to the manual of RFC controls for more details about the parameterization and the operation of the product. (MCO01137I0300). The service parameters of the fan coil units which can be modified by Hi-T2 control panel are described in the following table: MINIMUM...

  • Page 42: Description Of Rfc System

    Wall installation using screws In the standard configuration, the Hi-T2 control panel allows a complete control of the fan coil units; however with a switchable configuration of the RFC control system, you can get access to some manual features for comfort adjustment. In fact, it is possible to adjust the setpoint using the main knob giving a slight variation of the setpoint value (up to +/-5°C) that is already set by the Hi-...

  • Page 43: Connection Network

    When installing the RFC system with our I-32V5 chillers, it is possible to manage with a single Hi-T2 remote control panel up to 7 chillers/heat pumps in cascade and up to 80 terminal units divided into 9 thermal zones.
  • Page 44 Hi-T2 Centralised controller...
  • Page 46 Advantix SpA Via S. Giuseppe Lavoratore 24, 37040 Arcole (VR) Italy Tel. (+39).045.76.36.585 E-mail: info@advantixspa.it www.maxa.it...

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