Thermia iTec XT Installation Manual
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Thermia iTec XT Installation Manual

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Summary of Contents for Thermia iTec XT

  • Page 1 Installation Guide 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

    Cable connections ............Mandatory connections (for iTec XT Standard, see additional picture below) ..... . .

  • Page 4: About Documents And Decals

    Installation Guide iTec XT About documents and decals Introduction The following documents are available for this product: ▪ Installation Guide. Complements the Installation Quick Guide and gives thorough information on how to install the heat pump. Available for download, see below.
  • Page 5 Installation Guide 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 R32, a mildly flammable refrigerant.

  • Page 6: 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 7 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 8 Installation Guide iTec XT Install the power cable and communication cable of the indoor and Caution outdoor unit at least 1m away from the electric appliance. Protect the unit from rats or small animals. If an animal makes a con- Caution tact with the electric parts, it can cause malfunctions, smoke or fire.
  • Page 9 (See system proposal number: 100) Do not start the unit ( iTec XT Total, iTec XT Plus, iTec XT Compact, iTec Caution XT Total EQ) if there is a possibility of frozen water in the immersion heater.

  • Page 10: Refrigerant

    Installation Guide iTec XT Refrigerant 2.2.1 Refrigerant Work on the refrigerant circuit must only be carried out by a certified Warning engineer! Although the heat pump cooling system (refrigerant circuit) is filled with a chlorine-free and environmentally-approved refrigerant, work on the refrigerant circuit may only be carried out by authorized persons.
  • Page 11 Draining and refilling must only be carried out using new refrigerant (for the amount and type of refrigerant see manufacturer’s plate) through the service valves. All warranties from Thermia are void if, when filling with refrigerant Caution other than Thermia specified refrigerant, if there has not been written notification that the new refrigerant is an approved replacement re- frigerant together with other remedies.

  • Page 12: Heat Pump Data

    Installation Guide iTec XT Heat pump data Heat pump data, dimensions and connections 3.1.1 Description outdoor unit iTec XT 10, 14 & 16 (mm) 1018 1270 Position Description outdoor unit Measures Height water in 111 mm Height water out 380 mm...
  • Page 13 Installation Guide iTec XT Indoor unit iTec XT Standard 1. Lead-in for supply, sensor and communication cables Indoor unit iTec XT Plus 1. Supply line for heating system,28 mm Cu 2. Supply line to water heater, 28 mm Cu 3. Supply line from heat pump, 28 mm Cu 4.
  • Page 14 Position 1 and 2 can be connected to either the left or right-hand side or at the bottom of the indoor unit. 40 (± 10) Indoor unit iTec XT Total EQ 1. Supply or return line heat pump 2. Supply or return line heat pump 40 (±...
  • Page 15 XT system proposals iTec XT system proposals information The following system proposals shows basic installations for every indoor unit for iTec XT. For other system solutions we refer to the system generator on the Thermia website under Partner login access.
  • Page 16 10 kW 14 kW 16 kW Recommended minimum total water volume in the system for iTec XT To- tal, iTec XT Standard, iTec XT Compact & iTec XT Plus Recommended minimum added water volume in the system for iTec XT...
  • Page 17 XT System proposal iTec XT Standard iTec XT Standard system proposal with volume tank. This installation produces only heating or cooling. The control module comes with an outdoor sensor, radiator out sensors. The system supply line temperature is controlled with reference to the outside temperature following a set heat curve. The additional heater starts automatically on demand if auto mode is selected.
  • Page 18 Installation Guide iTec XT iTec XT Standard system proposal with buffer tank. This installation produces only heating or cooling. The control module comes with an outdoor sensor, radiator out sensors. The system supply line temperature and buffer tank sensor are controlled with reference to the outside temperature following a set heat curve. The additional heater starts automatically on demand if auto mode is selected.
  • Page 19 XT System proposal iTec XT Plus iTec XT Plus system proposal with volume tank. This installation produces hot water, heat and/or cooling. The control module comes with an outdoor sensor, radiator out sensors, con- denser pump, 3-way valve, electric auxiliary heater. The system supply line temperature is controlled with reference to the outside tem- perature following a set heat curve.
  • Page 20 Installation Guide iTec XT iTec XT Plus system proposal with buffer tank. This installation produces hot water, heat and/or cooling. The control module comes with an outdoor sensor, radiator out sensors, con- denser pump, 3-way valve, electric auxiliary heater. The system supply line temperature and buffer tank sensor are controlled with refer- ence to the outside temperature following a set heat curve.
  • Page 21 System proposal iTec XT Total and iTec XT Compact iTec XT Total and iTec XT Compact system proposal with volume tank. This installation produces hot water, heating and/or cooling. The control module comes with an outdoor sensor, radiator out sensors, condenser pump, 3-way valve, electric auxiliary heater, and a 180 litre water tank .
  • Page 22 Installation Guide iTec XT iTec XT Total and iTec XT Compact system proposal with buffer tank. This installation produces hot water, heating and/or cooling. The control module comes with an outdoor sensor, radiator out sensors, condenser pump, 3-way valve, electric auxiliary heater, and a 180 litre water tank .
  • Page 23 Installation Guide iTec XT System proposal iTec XT Total EQ iTec XT Total EQ system proposal. This installation produces hot water, heat and/or cooling. The control module comes with an outdoor sensor, radiator out sensors, con- denser pump (between indoor- and outdoor unit) and circulation pump (for space heating/cooling), 3-way valve, electric auxiliary heat- er, a 180 litre water tank, an additional 60 litre volume tank and an expansion vessel.

  • Page 24: Transporting, Unpacking And Setting-Up

    During transportation and lifting of the entire heat pump (iTec XT To- Caution tal, iTec XT Compact, and iTec XT Total EQ), the front panel must al- ways be in place as it locks the other panels in position. The outdoor unit must always be transported and stored upright in a Caution dry environment.

  • Page 25: Moving The Outdoor Unit

    Check that the delivery contains the following components: Heat pump (Outdoor unit) Indoor unit iTec XT Standard Indoor unit iTec XT Total, iTec XT Total EQ, iTec XT Compact, iTec XT Plus Document set 1 Outdoor sensor (NTC, 150 Ohm) 1 Outdoor sensor (NTC, 150 Ohm)
  • Page 26 Installation Guide iTec XT Moving the outdoor unit with a fork lift ▪ Insert the fork into the wooden pallet at the bottom of the outdoor unit carefully. Be careful that the fork does not damage the outdoor unit. Note that the side for lifting is on the compressor side, the right side when facing the front of the unit.
  • Page 27 ▪ Safe parts are the ones with which the worker can work in a flammable atmosphere. Other parts may result in ignition due to leak- age. ▪ Replace components only with parts specified by Thermia. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.
  • Page 28 Installation Guide iTec XT 4.3.7 Recovery of refrigerant ▪ When removing refrigerant from the system for servicing or decommissioning, it is recommended to remove the entire refrigerant. ▪ When transferring refrigerant into cylinders, make sure that only the refrigerant recovery cylinders are used.
  • Page 29 Installation Guide iTec XT Top view 1. Drain hole Ø 20mm 2. Drain plug 3. Air discharge side 1. Prepare a water drainage channel around the foundation, to drain condenser water away from around the unit. 2. Make sure the installation of the outdoor unit is made in such a way so that the drainage functions satisfactorily. This could entail that you have to build up the unit from its foundation, so you can lead waste water away.
  • Page 30 Follow the instructions below, to make the heat pump work satisfactory. Make a 400mm space between the bottom of the outdoor unit and the ground for installation (100mm in average and warm climate zones). It is recommended to use the stand available for order from Thermia, sold separately as an accessory. Cold climate zone 400 mm ▪...

  • Page 31: Positioning The Outdoor Unit

    Installation Guide iTec XT Positioning the outdoor unit Decide the installation location regarding the following condition and obtain the user’s approval. The location of the outdoor unit is chosen so that neither the own living environment or adjoining properties are exposed to noise interference.
  • Page 32 Installation Guide iTec XT Depending on the condition of power supply, unstable power or volt- Caution age may cause malfunction of the parts or control system. Do not install the heat pump in following places: ▪ The place where there is mineral oil or arsenic acid. There is a chance that parts may get damaged due to burned resin. The capacity of the heat exchanger may reduce or the Air to Water Heat pump may be out of order.

  • Page 33: Outdoor Unit Installation

    Installation Guide iTec XT 4.4.1 Space requirements for outdoor unit Space requirements for positioning one outdoor unit The outdoor and indoor unit shall be installed in compliance with the spaces described in the installation manual, to ensure accessibility from both sides and allow repairs or maintenance operations to be carried out. If the units installed without complying with procedures described in manual, additional expenses can be asked because special harnesses, ladders, scaffolding or any other elevation system for repair service will NOT be considered part of the warranty and will be charged to the end customer.
  • Page 34 Installation Guide iTec XT The anchor bolt must be 20 mm or higher from the base surface. (mm) 1370 Construct the molding according to the surrounding environment and climate zone, although always 1. Anchor bolt hole (X4) reinforced with a steel mesh. Measurements in the picture above are recommendations of (minimal) thickness and positioning of drain pipe.

  • Page 35: Noise Information

    Installation Guide iTec XT Noise information 4.6.1 Consideration to prevent noise To prevent disturbing noise from the heat pump the following recommendations should be observed: ▪ In the event the heat pump is positioned on a vibration sensitive base, vibration dampers should be used. The vibration dampers must be correctly dimensioned with regard to the heat pump's weight so that static spring depression of at least 2 mm is obtained in all mounting components.

  • Page 36: Installation Notes Regarding Refrigerant

    Installation Guide iTec XT Installation notes regarding refrigerant Note that the refrigerant has no odour. Caution ▪ Do not cut, pierce, or burn the refrigerant container or pipes. ▪ Do not use means to accelerate the defrosting process for example with an open flame or other methods besides the heat pump´s defrosting program.

  • Page 37: Piping Installation

    Installation Guide iTec XT Piping installation Piping installation must be carried out in accordance with applicable Caution local rules and regulations. The hot water tank must be equipped with an approved safety valve. Follow applicable local and national regula- tions.

  • Page 38: Minimum Total Water Volume And Minimum Flow In The Heating System

    10 kW 14 kW 16 kW Minimum total water volume in the system for iTec XT Total, iTec XT Stand- ard, iTec XT Compact & iTec XT Plus Minimum added water volume in the system for iTec XT Total EQ (Internal +100 volume tank, 60 litres).
  • Page 39 Installation Guide iTec XT It is crucial that the flow guard follows the direction of the water flow in order to work properly. So make sure you pay attention on which way the arrow on the flow guard is pointing. The flow guard has to be installed on the return line to the outdoor unit.

  • Page 40: Safety Valves

    Installation Guide iTec XT Make sure that check valves are installed on main supply line to pre- Caution vent risk of back flow from contaminating the water. Safety valves Radiator systems with a closed expansion tank must also be equipped Warning with an approved manometer and safety valve, minimum DN 20, 1.5...
  • Page 41 Installation Guide iTec XT Deformation of the piping can cause the unit to malfunction. Always use two wrenches (spanners) for tightening or loosening the water connections, and tighten connections with a torque wrench as specified in below table. If not, connections and parts can be damaged and leaks.

  • Page 42: Water Quality

    4. Bleed the system. The outdoor unit is not equipped with a bleeding valve, so it is recommended to install one at the highest point on the incoming pipes to the heat pump. 5. For iTec XT Total EQ, remember to manually air bleed the inbuilt 60 litre tank. 6. Refill the heating system to a pressure of min. 0,8-1,5 bar.

  • Page 43: Electrical Installation

    Installation Guide iTec XT Electrical Installation The heat pump is connected internally at the factory, for this reason electrical installation consists mainly of the connection of the power supply. Hazardous electrical voltage! The terminal blocks are live and can Danger cause death through electric shock.

  • Page 44: How To Access The Outdoor Unit Electrical Cabinet

    Installation Guide iTec XT Be sure to install both an earth leakage detector and circuit breaker with specified capacity in accordance with relevant local and national regulations. -If it is not installed properly, it may cause electric shocks and fire.
  • Page 45 Fig. 2: Indoor unit 6.2.4 Fuse table indoor unit Indoor Unit Mains Supply iTec XT Stand- iTec XT Total, iTec XT Compact, iTec XT Total EQ & iTec XT Plus (including immersion ard Fuse size heater) Fuse size 12kW 15kW...

  • Page 46: Electrical Connection Points

    Installation Guide iTec XT Electrical connection points This table shows how different electrical equipment should be connected. The positions in the table refers to the system solutions. Accessory* Description Connect to (Expansion card re- quired) Outdoor unit communication Indoor BusA to outdoor F1 / COM indoor BusB to out-...

  • Page 47: Cable Connections

    Installation Guide iTec XT Cable connections An appropriate installation is where there is approximately 300 mm free cable between the heat pump and the building. It is inappropri- ate to bolt trunking between the heat pump and the wall. This is because vibrations can then be transmitted from the heat pump through the trunking to the walls of the house.

  • Page 48: Mandatory Connections (For Itec Xt Standard, See Additional Picture Below)

    Installation Guide iTec XT Mandatory connections (for iTec XT Standard, see additional picture below) UV resistant, shielded, twisted pair (2, or 4 wire to include flow guard control) for outdoor use. Maximum cable length is 30 meter. INDOOR UNIT OUTDOOR UNIT 1.

  • Page 49: Sensors To External Water Heater Connection

    Installation Guide iTec XT Sensors to external water heater connection Position number Description Hot water sensor lower (114 / COM) Hot water sensor top (113 / COM) Condenser circulation pump connection Position number Description Condenser pump (101.1 / N / PE) Condenser pump control (116.2 / COM)

  • Page 50: Room Sensor Connection

    Installation Guide iTec XT Room sensor connection Position number Description Room sensor (DC to 121.1 / A to 121.3 / GND to GND / B to 121.5) Use a twisted pair data cable of at least 0.25 mm². Distribution circuit 1 connection...

  • Page 51: Valve Zone 1 And

    Installation Guide iTec XT 6.10 Valve zone 1 and 2 Position number Description Valve zone 1 (L to 102.1 / N to N / PE to PE) Valve zone 2 (L to 102.2 / N to N / PE to PE) 6.11...

  • Page 52: Room Sensor Zone 2 And Evu/Smart Grid 1

    Installation Guide iTec XT 6.12 Room sensor zone 2 and EVU/smart grid 1 Position number Description Room sensor zone 2 (119.1 to 1 / COM to 2 / L1:1 to L / N to N) EVU / Smart grid 1 (119.1 / COM) 6.13...

  • Page 53: Power Supply Connection Outdoor Unit

    Installation Guide iTec XT 6.14 Power supply connection outdoor unit Connect power cable from heat pump unit to terminal block in indoor and outdoor unit as shown below. Electrical current! The power cable may only be connected to the ter- Danger minal block intended for this purpose.

  • Page 54: Wiring

    Installation Guide iTec XT 6.14.1 Outdoor unit 400V~3N 230V~1N L1(R) L2(S) L3(T) L4(N) 6.14.2 Indoor unit 400V~3N 230V~1N 230V~3 6.15 Wiring Two electronic cables must be connected to the outdoor unit. ▪ The connection cord between indoor unit and outdoor unit (communication and flow guard control).

  • Page 55: Smart Grid

    Installation Guide iTec XT 6.15.1 Connecting the power terminal ▪ Connect the cables to the terminal board using the compressed ring terminal. ▪ Cover a solderless ring terminal and a connector part of the power cable and then connect it.

  • Page 56: Check List

    If the heating system itself holds the amount of water described in the table, a volume tank is not needed, but recommended. If the amount of water in the heating system is not sufficient, alarms may occur. For iTec XT Total, also check: Water heater checklist Bleed valve installed...

  • Page 57: Checking The Electrical Installation

    Installation Guide iTec XT Checking the electrical installation Before turning on electrical power, check the electrical installation according to the checklist below Electrical installation checklist Are circuit-breakers installed? One for indoor unit and one for outdoor unit (not included in the delivery) Are correct fuses installed? See fuse table.
  • Page 58 Installation Guide iTec XT AWIXT01IG0102 Thermia AB...
  • Page 59 Installation Guide iTec XT Thermia AB AWIXT01IG0102...
  • 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.

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