EN Interior hydraulic module MIT iSystem User Guide 300028952-001-01
Contents 1 Introduction ................................................................................................4 1.1 Symbols used .......................................................4 1.1.1 1.1.2 1.2 Abbreviations ........................................................5 1.3 General ..................................................................5 1.3.1 1.3.2 1.3.3 1.4 3 2.1 Safety instructions ...............................................7 2.2 Recommendations ...................
Contents 5 6 4.4 Installation shutdown .........................................22 4.5 Turning on the antifreeze function ....................22 Troubleshooting .......................................................................................23 5.1 Anti-hunting ........................................................23 5.2 Messages .............................................................23 5.3 Faults (Code type Lxx or Dxx) ...........................26 Technical specifications ......
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MIT iSystem 1 Introduction 1.1 Symbols used 1. Introduction 1.1.1. Symbols used in the manual In these instructions, various danger levels are employed to draw the user's attention to particular information. In so doing, we wish to safeguard the user's safety, obviate hazards and guarantee correct operation of the appliance. DANGER Risk of a dangerous situation causing serious physical injury. WARNING Risk of a dangerous situation causing slight physical injury. CAUTION Risk of material damage.
MIT iSystem 1. Introduction 1.
1. Introduction MIT iSystem 1.3.2. Installer's liability The installer is responsible for the installation and inital start up of the appliance. The installer must respect the following instructions: 4 Read and follow the instructions given in the manuals provided with the appliance. 4 Carry out installation in compliance with the prevailing legislation and standards. 4 Perform the initial start up and carry out any checks necessary. 4 Explain the installation to the user.
MIT iSystem 2. Safety instructions and recommendations 2 Safety instructions and recommendations 2.1 Safety instructions DANGER If smoke is released or in case of refrigerant leak: 1. 2. 3. 4. Switch the appliance off. Open the windows. Evacuate the premises. Contact a qualified professional. CAUTION Do not neglect to service the appliance. Contact a qualified professional or take out a maintenance contract for the annual servicing of the appliance. 2.
MIT iSystem 3. Description 3 Description 3.1 General description The MIT module is fitted with a DIEMATIC iSystem control panel with integrated regulator. It handles the automatic operation of the heat pump as a function of: 4 The outside temperature. 4 The ambient temperature when the remote control (as an option) is connected. The DIEMATIC iSystem control panel enables: 4 The independent control of a direct circuit without mixing valve and a circuit with mixing valve.
3. Description MIT iSystem B Operating mode selection key C DHW override key D Key to access the parameters reserved for the installer E Keys on which the function varies as and when selections are made ¼ See: "Key functions", page 9 F Rotary setting button: 4 4 3.2.2.
MIT iSystem 3. Description n Operating modes 0 v c 4 6 8 10 12 14 16 18 20 22 1 1 2 w p b AUTO x c gm r j 0 2 4 6 8 10 M t STD 12 14 16 18 p Summer mode: Cooling is possible. Domestic hot water continues to be produced. b WINTER mode: Heating and domestic hot water working. w+p Forced cooling mode. w Cooling mode: Heating according to the time programme. AUTO Operation in automatic mode according to the timer programme.
3. Description MIT iSystem n Domestic Hot Water override A bar is displayed when a DHW override is activated: 0 2 4 6 8 10 12 14 16 18 20 22 24 4 Flashing bar: Temporary override 4 Steady bar: Permanent override bar r j M C002707-A p b AUTO x c g m t STD n Electrical back-up G 0 v c 4 6 8 10 12 14 16 18 20 22 24 The symbol 1 or 2 lights up, depending on whether stage 1 or 2 on the electrical back-up is commanded.
MIT iSystem 3. Description n Other information 0 2 4 6 8 10 12 14 16 18 20 22 r The symbol is displayed when domestic hot water production is running. w Valve indicator: The symbol is displayed when a 3-way valve is connected. 24 bar r j M C002699-B p b AUTO x c g m t STD M 4 x : 3-way valve opens 4 c : 3-way valve closes The symbol is displayed when the pump is operating. Name of the circuit for which the parameters are displayed. 3.2.3.
3. Description MIT iSystem 7. To go back to the main display, press key j2 times. 0 2 4 6 8 10 12 14 16 18 20 22 24 2x LUNDI 11:45 v bar c 1 It is possible to use the ( and ' keys instead of the rotary button.
4. Operating the appliance MIT iSystem 4 Operating the appliance 4.1 Putting the appliance into operation 1. Switch on the power by throwing the on/off switch on the inside module. C002366-B 0 v bar c 1 2 1 2 2 4 6 8 10 12 14 16 18 20 22 2. The first time the boiler is powered up, the LANGUAGE menu is displayed. Select the desired language by turning the rotary button. 3. To confirm, press the rotary button. 4. The parameter TYPE displays.
4. Operating the appliance 4.2 MIT iSystem Reading out measured values The various values measured by the appliance are displayed in the #MEASURES menu. 1. To access user level: Press the > key. 0 2 4 6 8 10 12 14 16 18 20 22 24 2. Select the menu #MEASURES. SUNDAY 11:45 v bar c Turn the rotary button to scroll through the menus or modify a value. 4 Press the rotary button to access the selected menu or confirm a value modification.
MIT iSystem 4. Operating the appliance User level - Menu #MEASURES Parameter Description Unit ROE-II ROE-H ROE+ ROE+TH ROI+ HOT GAS TEMP. Refrigerant temperature at the compressor outlet °C HOT GAS TEMP. Compressor outlet temperature °C Number of heat pump start-ups NB IMPULS.COMP.1 Number of start-ups on compressor 1 RUNTIME HP Number of hours' operation of the heat pump compressor NB IMPULS.COMP.2 Number of start-ups on compressor 2 IN 0-10V (1) x x NB IMPULS.COMP RUNTIME.COMP.
4. Operating the appliance MIT iSystem Menu C Parameter Adjustment range Description Factory setting TEMP.TANK AUX (2) 10 to 80 °C Desired domestic hot water temperature in the auxiliary circuit DHW A TEMP. (2) 10 to 80 °C Desired domestic hot water temperature in circuit A 10 to 80 °C Desired temperature of the domestic hot water in night mode 55 °C AUX.TANK T.NIGHT (2) 10 to 80 °C Desired temperature of the domestic hot water in night mode 55 °C A.TANK T.
MIT iSystem 4. Operating the appliance 4.3.3. Forcing domestic hot water production To force domestic hot water production, proceed as follows: 1. Press the r key. 2. To select the desired parameter, turn the rotary button. 3. To modify the parameter, press the rotary button. To go back to the previous display, press the key j. 4. To modify the parameter, turn the rotary button. 5. To confirm, press the rotary button. MODE To cancel, press key h.
MIT iSystem 4. Operating the appliance 4.3.5. Setting the time and date 1. To access user level: Press the > key. 0 2 4 6 8 10 12 14 16 18 20 22 24 2. Select the menu #TIME .DAY. SUNDAY 11:45 v bar c Turn the rotary button to scroll through the menus or modify a value. 4 Press the rotary button to access the selected menu or confirm a value modification. ¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 12.
4. Operating the appliance MIT iSystem User level - Menu #CHOICE TIME PROG. Parameter Adjustment range Description CURRENT PROG.A P1 / P2 / P3 / P4 Comfort programme activated (Circuit A) CURRENT PROG.B P1 / P2 / P3 / P4 Comfort programme activated (Circuit B) CURRENT PROG.C P1 / P2 / P3 / P4 Comfort programme activated (Circuit C) 4.3.7. Customising a timer programme 1. To access user level: Press the > key. 0 2 4 6 8 10 12 14 16 18 20 22 2. Select the menu #TIME PROGRAM.
4. Operating the appliance 0 v bar c 1 2 1 2 2 4 6 8 10 12 14 16 PROG P2 C Mo Tu We Th Fr "Select the days to program" r p b AUTO x c g m ( ' r MIT iSystem 18 20 Sa j 22 24 a Su L t STD 6. b : Day selection Press key b / v until the symbol b is displayed. Turn the rotary button to the right to select the day(s) desired. v : Cancelling the day selection Press key b / v until the symbol v is displayed.
4. Operating the appliance MIT iSystem User level - Menu #TIME PROGRAM Day Comfort periods / Filling enabled: P1 P2 _______________ P3 _______________ P4 _______________ _______________ TIME PROG.DHW Monday Tuesday Wednesday Thursday Friday Saturday Sunday TIME PROG.AUX Monday Tuesday Wednesday Thursday Friday Saturday Sunday EVU TIMER PROG. Monday Tuesday Wednesday Thursday Friday Saturday Sunday 4.
5. Troubleshooting MIT iSystem 5 Troubleshooting 5.1 Anti-hunting When the heat pump is in "anti-short cycle" operating mode, the symbol "?" flashes. This is a normal operating mode. When the restart temperature is reached, operation will be guaranteed. 1. Press the "?" key. The message Operation assured when the restart temperature will be reached is displayed. When the restart temperature is reached, operation will be guaranteed. This message is not an error message but an item of information. 5.
MIT iSystem 5. Troubleshooting Code Messages Description Checking / solution B6 Heat pump exchanger sensor error. Bad connection. B7 BL.S.ECH.HP BL.S.BAT.HP Heat pump battery sensor error. Contact the professional who takes care of maintenance of the appliance. Bad connection. 4 Contact the professional who takes care of maintenance of the appliance. The contact connected to the BL inlet is open. 4 B8 BL.BL INPUT OPEN The BL inlet on the PCU PCB terminal block is open.
5. Troubleshooting MIT iSystem Code Messages Description B23 Heat pump 4 way valve error. BL.V4V HP Checking / solution 4 4 Flow rate error between the heat pump and MIT. B24 BL.HW. PUMP B25 B26 BL.S.OUTLET.COMP Compressor outlet temperature sensor error. BL.OFF LIMIT1 Under the lower operating limit. B27 BL.OFF LIMIT3 4 Under the lower operating limit. 4 B28 FLOW FAIL. 6 Exchanger frozen. 4 B29 FLOW FAIL. 8 Exchanger frozen. 4 B30 BL.COM.HP No communication with the heat pump.
MIT iSystem 5.3 5. Troubleshooting Faults (Code type Lxx or Dxx) 0 2 4 6 8 10 12 14 16 18 20 22 24 SUNDAY 11:45 v c 1 TEMP. : 68° 2 1 2 r PCU. COM. FAIL. D27 bar p b AUTO x c g m ( r j M t STD 1. Make a note of the code displayed. The code is important for the correct and rapid diagnosis of the type of failure and for any technical assistance that may be needed. 2. Press the t key. If the code is displayed again, switch off the boiler and then switch it back on.
5. Troubleshooting MIT iSystem Code Faults Description L18 HP COM.FAIL Communication error with the heat 4 pump. L19 FAIL. PAC FLOW S. Heat pump flow sensor error. L20 FAIL.RET.S.PAC Heat pump return sensor error. 4 L21 AIR IN S.FAIL Heat pump air inlet sensor error. 4 L22 AIR OUT S.FAIL Heat pump air outlet sensor error. 4 L23 S.GAS EXP FAIL Compressor suction temperature sensor error. 4 L24 EVA.S.HP FAIL Evaporator temperature sensor error.
MIT iSystem 6. Technical specifications 6 Technical specifications 6.1 Technical specifications 6.1.1.
MIT iSystem 7. Energy savings 7 Energy savings 7.1 Energy savings This chapter contains: 4 Energy-saving advice 4 Advice on setting the room thermostat correctly 7.1.1. Energy-saving advice 4 Do not block ventilation outlets. 4 Install reflective panels behind the radiators to prevent heat losses. 4 Do not cover the radiators. Do not hang curtains in front of the radiators. 4 Insulate the pipes in rooms that are not heated (cellars and lofts). 4 Close the radiators in rooms not in use.
MIT iSystem 7. Energy savings The setting of the control panel and/or of the remote control has a considerable influence on energy consumption. A few tips: 4 In the room in which the room thermostat is installed, it's advised not to use thermostatic valve radiators. If a thermostatic valve is used the valve must be fully opened. 4 Completely closing and opening thermostatic valve radiators causes undesirable temperature fluctuations. Open and close thermostatic valves in small steps.
MIT iSystem 8. Warranty 8 Warranty 8.1 General You have just purchased one of our appliances and we thank you for the trust you have placed in our products. Please note that your appliance will provide good service for a longer period of time if it is regularly checked and maintained. Your fitter and our customer support network are at your disposal at all times. 8.
MIT iSystem 24/05/2012 - 300028952-001-01 8.
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