Thermia iTec XT Commissioning
  1. Manuals
  2. Brands
  3. Thermia Manuals
  4. Heat Pump
  5. iTec XT
  6. Commissioning

Thermia iTec XT Commissioning

Hide thumbs Also See for iTec XT:
Table of Contents

Advertisement

Quick Links

Download this manual
Commissioning
iTec XT
www.thermia.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the iTec XT and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Thermia iTec XT

Summary of Contents for Thermia iTec XT

  • Page 1 Commissioning iTec XT www.thermia.com...
  • Page 2 Thermia AB is not liable or bound by warranty if these instructions are not adhered to during installation or service. The English language is used for the original instructions. Other languages are a translation of the original instructions. (Directive 2006/42/EC)

  • Page 3: Table Of Contents

    Activate external auxiliary heater in iTec XT Standard ....... . .
  • Page 4 Commissioning iTec XT Installation protocol and customer info ..........

  • Page 5: About Documents And Decals

    Commissioning iTec XT About documents and decals Introduction The following documents are available for this product: ▪ Installation Guide. Gives thorough information on how to install the heat pump. Available for download, see below. ▪ The Commissioning Guide contains the required information in order to commission the heat pump and tune the heating system.
  • Page 6 Commissioning iTec XT 1.3.1 General Warning, danger! Read the documentation provided. Read the documentation provided. Warning, hazardous electrical voltage! Warning, hot surfaces! Warning, moving parts! Warning, risk of crushing injury! This appliance is charged with R-32, a mildly flammable refrigerant.

  • Page 7: Important Information/Safety Regulation

    General safety precautions Carefully follow the precautions listed as below because they are essential to guarantee the safety of Thermia product. Store the manual in a safe place in order to be able to use it as reference after installation. Remember to hand it over to the new owner if the heat pump unit is sold or transferred.
  • Page 8 If there is any risk of groundwater infiltration at wall lead-ins for con- Caution nected pipes, watertight grommets must be used. When the Thermia Air-to-Water Heat Pump system is used in series with another heat source (e.g. gasboiler), ensure that the return water temperature not exceed 65°C.
  • Page 9 Do not start the unit ( iTec XT Total, iTec XT Plus, iTec XT Compact and Caution iTec XT Total EQ) if there is a possibility of frozen water in the immer- sion heater.

  • Page 10: Menu Information

    The information in the display and menus will vary depending on heat pump model and connected accessories. 1. Display 2. Navigation pad ROOM 20 OPERAT. AUTO ROOM 20 OPERAT. AUTO Display as seen on iTec XT Standard and iTec XT Plus cabinets AWIXT01CG0102 Thermia AB...

  • Page 11: Configuration Of Control System

    Commissioning iTec XT Configuration of control system Commissioning The installation may only be commissioned if the hydraulic system has Caution been filled and bled. Otherwise circulation pump can be damaged. If the installation is only to be driven by the auxiliary heater during the installation, ensure that the heating system is filled and compressor cannot be started.
  • Page 12 Commissioning iTec XT The default heat pump size setting at shipping is NO SIZE (indicated by an asterisk next to the English text). This means that the compres- sor cannot start and the installer must first select language and a then heat pump size before leaving this menu.

  • Page 13: Factory Setting

    If the heat demand is greater than the heat pump’s compressor capacity, the auxiliary heater engages automatically in operating mode AUTO. iTec XT Total has three outputs, IMM. HEAT 1, IMM. HEAT 2 (factory default) and IMM. HEAT 3 and output can be controlled in five steps.

  • Page 14: Activate External Auxiliary Heater In Itec Xt Standard

    The potential free outputs must be used. If a multi power stage heater is installed, use the settings in the chap- ter above: "Activate the electrical immersion heater in iTec XT Total, iTec XT Compact and iTec XT Plus" The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding for at least 5 seconds.

  • Page 15: Set Hot Water Start Temperature And Activate Hot Water

    Commissioning iTec XT Set hot water start temperature and activate hot water The default hot water start temperature in COMFORT-mode and ECO-mode is 40°C, and 25°C in AWAY-mode. If another start temperature is desired, change the start temperature setting in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding for at least 5 seconds.

  • Page 16: Hot Water Mode

    Commissioning iTec XT Hot water mode HOT WATER switched on will enable hot water production. If you should want a prioritization on the amount of hot water and a faster hot water production you should change mode to either ECO or COMFORT. By activating TOP-UP the heat pump can immediately start to heat the water heater using the compressor and electrical auxiliary heater until the tank is fully heated.

  • Page 17: Distribution Circuits

    There are three available mixing valve options: ▪ Mixing valve (Activation, see chapter "Activate the external auxiliary heater in iTec XT Standard") ▪ Distribution circuit (DISTR. CIRCUIT) 1 ▪ Distribution circuit (DISTR. CIRCUIT) 2 (Requires expansion card) The mixing valve is used between the heat pump, an external auxiliary heater (may be an oil burner or equivalent) and the heating system.

  • Page 18: Activation Of Optimum Circulation (Variable Speed) Pump

    Activation of optimum circulation (variable speed) pump The Optimum circulation pump is factory installed in iTec XT. It is default ON from factory and has to be deactivated for iTec XT Standard If fixed speed circulation pump is used, which may be the case for iTec XT Standard, the optimum function should be turned off.

  • Page 19: Eq Function

    EQ function means that we control both built-in condenser pump and circulation pump, and the demand calculation of heating / cool- ing now takes place on the volume tank sensor. iTec XT Total EQ has 1 built-in non-return valve. Thermia AB...

  • Page 20: Find Min. Flow

    If any functions are activated after the FIND MIN.FLOW sequence is done, they will have their respective default setting. For iTec XT Standard, with fixed speed circulation pump, the flow has to be set from MANUAL TEST. Make sure the "F" symbol is present in the display after finishing the test.
  • Page 21 Operation mode Cool (Does not apply for iTec XT Total EQ) If the function for cooling is activated, the result of the flow search may be as follows: ▪...
  • Page 22 Commissioning iTec XT It may take a while before the search is completed and the result is dis- played. You may continue with other parts of the commissioning that are independent of the search for a min. flow. Press several times to navigate back to the Service Menu.
  • Page 23 Commissioning iTec XT Start with a high setting, for example 100%. Check that the circulation pump is running by listening, placing a hand on the circulation pump and listen for air in the system. If no flow is registered at 100%, check the system for air and bleed if necessary.

  • Page 24: Manual Test

    Commissioning iTec XT Manual test The installation may only be commissioned if the heating system and Caution water heater have been filled and bled. Otherwise the circulation pump can be damaged. Any alarms that may occur in connection with the installation must be Caution fault-traced.
  • Page 25 Test the circulation pump Optimum (variable speed) condenser/circulation(EQ) pump Optimum (variable speed) condenser pump is factory installed in iTec XT Total, iTec XT Plus, iTec XT Compact. In iTec XT Total EQ the same functionality is controlled by the extra inbuilt circulation pump.
  • Page 26 The following settings are made in the MANUAL TEST menu. To activate MANUAL TEST, see description above. Use buttons to move up and down in the menu. In the MANUAL TEST menu: For iTec XT Total, iTec XT Plus, iTec XT Compact: 1. Use to navigate to the CONDENSER PUMP entry ▪ Press to set condenser pump speed.
  • Page 27 The calculated supply temperature to the heating system group is within brackets. TANK SENSOR Shows the temperature on the iTec XT Total EQ tank ( Only in iTec XT Total EQ) Shows the temperature on the system return (Only in iTec XT Total EQ) RETURN SENSOR Shows the temperature on the condenser out sensor.
  • Page 28 Commissioning iTec XT Exit test operation Set the value for MANUAL TEST to 0. Insulate the piping When the manual testing is finished, do a final check for leaks and insulate the piping. Make sure that pipes transporting cold water are insulated to prevent Caution condensation damage.

  • Page 29: Information Menu

    Commissioning iTec XT INFORMATION menu Menu overview ▪ OPERAT. ▪ HEATING ▪ DISTR. CIRCUIT1 ▪ DISTR. CIRCUIT2 ▪ HOT WATER ▪ COOLING ▪ POOL ▪ BUFFER TANK ▪ OP. DATA ▪ OPERAT. TIME ▪ DEFROST ▪ CALENDAR ▪ CLOCK ▪ HOT WATER BLOCK ▪...

  • Page 30: Heating

    Commissioning iTec XT Menu selection Meaning Factory setting Operation with heat pump for hot water production and auxiliary heater during peak HOT WATER heating charging (anti-legionella function). When the operation is set to HOT WA- TER, the circulation pump is not run- ning.

  • Page 31: Distribution Circuit 1 - 2

    Commissioning iTec XT Parameter Meaning The temperature that will apply at temperature setback. Temperature setback is activated via the calendar func- SETBACK TEMP tion. When the function is activated ROOM is the temperature that is set here. Factory setting: 18°C, range: 10°C – 30°C ROOM FACTOR Only displayed if an accessory Room temperature sensor is installed.

  • Page 32: Hot Water

    Commissioning iTec XT HOT WATER Parameter Meaning HOT WATER Allows hot water production. Factory setting: , range: – ON MODE ▪ "COMFORT" is the choice for customers with large demands of hot water availability. ▪ "ECO" can be selected as the best compromise between energy efficiency and hot water availability.

  • Page 33: Op. Data

    Commissioning iTec XT Parameter Meaning Activate high temperature mode when the external auxiliary heater is selected. TANK TOP UP The external auxiliary heater will heat the tank to the highest permitted tank temperature. Factory setting: , range: – ON The function permits a reduction of the temperature in the tank when the temperature reduction is set to active RED.

  • Page 34: Defrost

    Commissioning iTec XT Parameter Meaning Operating time for IMMERSION HEATER 2. IMM. HEAT 2 Operating time for IMMERSION HEATER 3. IMM. HEAT 3 7.10 DEFROST Parameter Meaning Total number of defrosts carried out. DEFROSTS The operating time of the compressor in minutes between the two last defrosts.

  • Page 35: Language

    Commissioning iTec XT 7.13 LANGUAGE Menu selection SVENSKA ENGLISH DEUTSCH NEDERLANDS FRANÇAIS ESPAÑOL ITALIANO NORSK DANSK SUOMI EESTI POLSKI ČEŠTINA SLOVENSKI SLOVENSKÝ HRVATSKI SRPSKI LIETUVOS ÍSLENSKA TÜRKÇE MAGYAR ROMÂNĂ PORTUGUÊS български русский Thermia AB AWIXT01CG0102...

  • Page 36: Service Menu

    Commissioning iTec XT SERVICE menu Menu overview To be able to chose a specific function, the sensor for that function must be connected. ▪ HOT WATER ▪ HEATING ▪ COOLING ▪ POOL ▪ AUX. HEATER ▪ MANUAL TEST ▪ INSTALLATION ▪...

  • Page 37: Heating

    Commissioning iTec XT Parameter Meaning Time for hot water production during combined hot water demand and heating or cooling demand, in minutes. HOT WATER TIME Factory setting: 30M, range: 5M – 40M Time interval between peak heating chargings (anti-legionella function) in days. Operating mode that permits TOPH.

  • Page 38: Pool

    Commissioning iTec XT Parameter Meaning When the heat pump must alternate between different demands for example heating, hot water, pool heating COOLING TIME and cooling, cooling will be produced longest according to the set number of minutes. Factory setting: 20M, range: 5M – 40M MAX START TEMP Highest settable temperature for START parameter in INFORMATION ->...

  • Page 39: Manual Test

    In the event of pumps with fixed speed, the selection 0 = stop and 1 = start are available For iTec XT Standard, with fixed speed condenser pump, the flow has to be set from MANUAL TEST. Make sure the "F" symbol is present in the display after finishing the test. If not, check the system for air, and that the flow switch is correctly installed.
  • Page 40 Commissioning iTec XT Parameter Meaning 0 = stop circulation pump in discharge circuit 1 CIRC. PUMP DC 1 1 = start circulation pump in discharge circuit 1 = closes shunt in discharge circuit 1 SHUNT DC 1 0 = shunt unaffected...

  • Page 41: Installation

    1 = reset of operating times to zero Factory setting: 0, range 0 – 1 OUTDOOR SENSOR CALIBRA- SYSTEM SUPPLY TION SUPPLY LINE HOT WATER SENSOR TOP WATER SENSOR BUFFER TANK DISTR. CIRCUIT 1 DISTR. CIRCUIT 2 POOL TANK iTec XT Total EQ Thermia AB AWIXT01CG0102...

  • Page 42: Defrost

    Commissioning iTec XT Parameter Submenu Meaning Indicates the version number of the software in the control. VERSION S/N (Serial number) DISPLAY COMM.KIT MAIN MICOM INV. MICOM EEPROM EXP CARD Time interval between collection points of temperature history in minutes. LOG TIME The history graphs always show the 60 last collection points, which means that the graphs can display history from 1 hour up to 60 hours ago.

  • Page 43: Buffer Tank

    - ON The flows found with this function will override any previous factory settings for MIN FLOW HEAT, MIN FLOW H.W and MIN FLOW COOL. Delta control iTec XT Total EQ TEMP DIFF CIRC Factory setting: 8K (0K - 16K) 8.11...

  • Page 44: Outd. Unit Info

    Commissioning iTec XT Parameter Meaning Indicates if the system shunt group must be controlled by a heat curve or by a constant temperature. Condi- SYSTEM CIRCUIT tions are that CONFIGURATION = TANK CONTROL and the external auxiliary heater is not configured.
  • Page 45 Commissioning iTec XT Parameter Meaning The current workload of FAN 1, in %. FAN 1(%) The current speed of FAN 2, in RPM. For 12kW and16kW. FAN 2 RPM The current workload of FAN 2, in %. For 12kW and16kW.

  • Page 46: Starting Up

    Commissioning iTec XT Starting up Now it's time to start the system and do the final settings and adjustments. Starting the system Set the heat pump to the desired operating mode in the menu INFORMATION -> OPERAT. The following operating modes are available:...
  • Page 47 ▪ Check that the delta temperature (the difference between the supply line and return line) should be 7–10°C. The delta is checked in the INFORMATION MENU, see description as follows. Only applies for iTec XT Total EQ. Check the delta temperature The time it takes to get a correct and stable reading of the delta is de- pendant of the size of the heating system.

  • Page 48: Bleeding And Filling The Hot Water Heater And Heating System

    Commissioning iTec XT Bleeding and filling the hot water heater and heating system 1. Open all radiator valves fully. 2. Start the heat pump. 3. Listen for air in the system. 4. Refill the heating system to a pressure of min. 0,8-1,5 bar.

  • Page 49: Tuning The System

    Commissioning iTec XT Tuning the system 11.1 Tuning the heating system To obtain a heating system balance and obtain an even and comfortable indoor temperature, the heating system may need adjustment according to the example below. The indoor temperature is adjusted by changing the heat curve. The heat curve calculates the supply temperature depending on the outdoor temperature.
  • Page 50 Commissioning iTec XT 1. Supply temperature (°C) 2. Maximum supply temperature 3. Outdoor temperature (°C) 4. 0°C 5. Value for CURVE is 40°C -2 0 Fig. 1: Graph showing the set value 40 for CURVE. In the event of outdoor temperatures below 0°C, a higher setpoint value is calculated and in the event of outdoor temperatures greater than 0°C, a lower setpoint value is calculated.
  • Page 51 Commissioning iTec XT 1. Supply temperature (°C) 2. Desired supply temperature 3. Outdoor temperature (°C) -2 0 Fig. 3: Changing the ROOM value changes the heat curve upwards or downwards The relationship of the supply temperature to the outdoor temperature will not be affected.
  • Page 52 Commissioning iTec XT 11.6 FLOW FACTOR The flow factor is used to compensate for deviating pressure drops in pipe system. A system with high pressure drop needs to be com- pensated by a factor greater than 1 to get the full effect from outdoor unit. The preset value works for most systems. Keep in mind that a high flow can create unwanted noise in the pipe system.
  • Page 53 Commissioning iTec XT 11.7 Silent mode Outdoor unit option settings by tact switches: K1 K2 K3 K4 All outdoor unit settings are set with the K2 button. ▪ Press the K2 switch for 2 seconds, ONLY if the compressor has stopped.
  • Page 54 Commissioning iTec XT 11.8 Offset settings for defrost mode Outdoor unit option settings by tact switches: K1 K2 K3 K4 Depending on what climate zone you are located in, you may need to adjust defrost settings, on the outdoor unit, by changing the defrost offset.
  • Page 55 Commissioning iTec XT 11.9 Zoning Configuration of zoning function: Put the Operation mode to "OFF". SYSTEM Press and hold to gain access to the SERVICE menu. POOL Navigate to SERVICE - INSTALLATION - SYSTEM and set ZONING to use one or two zones.

  • Page 56: Error Codes

    Commissioning iTec XT Error codes The error codes shown in the table below will be visible in the INDOOR UNIT display whenever an error is detected from the OUTDOOR UNIT. ALL errors will stop the compressor from running until the error is solved. Some errors are automatically cleared, some needs man- ual action and some severe errors might even need hardware to be replaced or serviced.
  • Page 57 Commissioning iTec XT Display Explanation Error source E436 Protect for Freezing Burst Control Error OUTDOOR UNIT E438 EVI EEV Opening Error OUTDOOR UNIT E439 Refrigerant Leakage Error (Detect when the system is not operated) OUTDOOR UNIT Heating operation blocked (outdoor temperature over 35°C)
  • Page 58 Commissioning iTec XT Installation protocol and customer info Fill in the Installation protocol in the User Guide. After installation and test operation, the customer must be informed about their new heat pump installation. In the User guide there is a checklist regarding the information that the installer must give the customer.
  • Page 59 Commissioning iTec XT Thermia AB AWIXT01CG0102...
  • Page 60 Internet: www.thermia.com Thermia can accept no responsibility for possible errors in catalogues, brochures and other printed material. Thermia reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.

Table of Contents

Save PDF