CTC Union EcoZenith i255 Series Installation And Maintenance Manual
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CTC Union EcoZenith i255 Series Installation And Maintenance Manual

400 v 3n/ 230 v 1n/ 230 v 3
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162 505 67-1
2020-08-27
Providing sustainable energy solutions worldwide
Installation and Maintenance Manual
CTC EcoZenith i255
400 V 3N~/ 230 V 1N~/ 230 V 3~
Important!
• Read carefully before use, keep for future reference.
• Translation of the original instructions.

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Summary of Contents for CTC Union EcoZenith i255 Series

  • Page 1 162 505 67-1 2020-08-27 Providing sustainable energy solutions worldwide Installation and Maintenance Manual CTC EcoZenith i255 400 V 3N~/ 230 V 1N~/ 230 V 3~ Important! • Read carefully before use, keep for future reference. • Translation of the original instructions.
  • Page 3 162 505 67-1 2020-08-27 Installation and Maintenance Manual CTC EcoZenith i255...

  • Page 4: Table Of Contents

    Table of Contents Congratulations on your new product 10. Pipe installation _______________________ ___________________________________________________ Important to remember! 10.1 Filling ______________________________________________________________ ______________________________________________ Safety instructions 10.2 Schematic diagram __________________________________________ _______________________________________________________ Checklist 10.3 Connection to heat pump _______________________________________________________________________ _________________________________ 10.4 Schematic diagram of passive cooling – Combined Your home’s heating settings _____________________________ Technical data...

  • Page 5: Congratulations On Your New Product

    Congratulations on your new product You have just purchased a CTC EcoZenith i255, with which we hope you will be very pleased. Read about how you can take care of your boiler on the following pages. Save this manual containing the installation and maintenance instructions. If it is properly maintained, you will be able to enjoy the use of your CTC EcoZenith i255 for many years.

  • Page 6: Important To Remember

    Important to remember! Check the following points at the time of delivery and installation: • The product must be transported and stored in an upright position. If these instructions When moving the product, it can be placed temporarily on its back. are not followed •...

  • Page 7: Safety Instructions

    Safety instructions Turn off the power with an omnipolar switch before doing any work on the product. The product must be connected to protective earth. The product is classified as IPX1. The product must not be rinsed with water. When handling the product with a hoist ring or similar device, make sure that the lifting equipment, eyebolts and other parts are not damaged.
  • Page 8 CTC EcoZenith i255...

  • Page 9: Checklist

    Checklist The checklist must always be completed by the installation engineer • If a service is performed, you may be required to provide this document. • Installation must always be done according to the installation and maintenance instructions. • Installation must always be carried out in a professional manner. •...

  • Page 10: Your Home's Heating Settings

    Your home’s heating settings The House Heating Curve The heating curve is the central part of the product’s control system. It is the heating curve which determines the compensated flow temperature requirements for your property dependent upon the outdoor temperatures. It is important that the heating curve is correctly adjusted, so that you achieve the best operation and economy possible.
  • Page 11 Appropriate Default Values During installation you can seldom achieve a precise setting for the heating curve instantly. In this case, the values given below may provide a good starting point. Radiators with small heat-emission surfaces require a higher primary flow temperature. You can adjust the gradient (heating curve gradient) for your heating system under the "Installer / Settings / Radiator system"...
  • Page 12 Examples of Heating Curves You can see in the diagram below how the heating curve changes with different Inclination settings. The gradient of the curve shows the temperatures that the radiators require at different outdoor temperatures. Primary Flow Temperature Curve Inclination The inclination value which is set is the primary flow temperature when the outside temperature is –15 °C.
  • Page 13 Summer-time operation Primary Flow Temperature Heating All properties have internal heat gains (lamps, oven, ºC switched body heat, etc.), which means that the heating can be Heating up Heating up switched off when the outdoor temperature is lower than the desired room temperature. The better insulated the house is, the earlier the heating from the heat pump can be switched off.

  • Page 14: Technical Data

    2. Technical data Table 400 V 3N~ Electrical Data CTC EcoZenith i255 H CTC EcoZenith i255 L Electrical data 400 V 3N~ 50 Hz Rated power el. 15.04 15.04 Electric heater, upper ( 0 - 9.0 (0.3/0.6/0.9/1.2/.../9.0) adjustable, steps of 0.3 kW Electric heater, lower (adjustable) 0-9 (0/6/9) Max.
  • Page 15 Table 230 V 1N~/230 V 3~ CTC EcoZenith i255 L CTC EcoZenith i255 L Electrical Data 1 x 230 V 3 x 230 V Electrical data 230 V 1N~ 50 Hz 230 V 3~ 50 Hz Rated power el. 12.04 14.04 Electric heater, upper ( (0/2/3/4/5/6/7/9) (0/1.2/2.4/3.5/4.6/ 5.8/7.0) adjustable)

  • Page 16: Measurements

    Measurements Low Model High Model Bleeding Safety/connection waste pipe 3/4” 22 Cold water connection Ø22 DHW Ø22 Radiator primary flow clamp ring Ø22 Radiator return Ø22 /expansion connection From heat pump Ø22 (CTC EcoZenith i255L) To heat pump Ø22 (CTC EcoZenith i255L) Lifting sleeve 3/4"...

  • Page 17: Function Description

    3. Function description The picture below shows the basic construction of CTC EcoZenith i255. If a heat pump is connected, the energy in the air or bedrock/ground is drawn up by the cooling system. The compressor then increases the temperature to a usable level. Afterwards it releases the energy for the Heat pump pipe heating circuit and DHW.

  • Page 18: Parameter List

    4. Parameter list The tables show factory settings for important product parameters. The installer can enter the set values in the column on the right as a reference for future adjustments. Heating circuit Factory User (set) value setting Max primary flow °C Min primary flow °C Heating mode Auto...

  • Page 19: Control System

    5. Control system The CTC EcoZenith i255 has an advanced yet straightforward control system with a touchscreen on which all settings are entered directly. The CTC EcoZenith i255 control system: • monitors all functions in the system tank, heat pump and heating system. •...

  • Page 20: Quick Start Touchscreen

    Quick start touchscreen The illustration below shows the most common functions you need to set and use as the end customer. Start menu Increase value Scroll & Swipe sideways Single click = Select Back Next Select and save Double click = Open Decrease Increase value...
  • Page 21 Weekly program "Extra DHW" Tip: Set the time approx. 1 hour earlier than when you need the hot water as it may take some time to heat-up. Start Timer, Extra DHW Click "+" or "-" to activate timer duration. Select DHW program. Economy –...

  • Page 22: Detailed Menu Descriptions

    6. Detailed menu descriptions All settings can be configured directly on-screen using the easy-to-read control panel. Operational and temperature information is also displayed here. You can easily enter the different menus to find information on the operation or to set your own values.

  • Page 23: Heating/Cooling

    Heating/Cooling This is used to set the desired room temperature. Use the "Plus" and "Minus" buttons to set the desired temperature, i.e. the setpoint, which is shown in brackets. The actual value is shown in front of the brackets. If two heating circuits are installed, both are displayed. The example above shows that the room temperature is 22.4 If you want to schedule a temperature reduction, °C and the desired value (setpoint) is 23.5 °C.
  • Page 24 6.3.2 Outdoor sensor/room sensor errors If a fault occurs with an outdoor sensor, the product triggers an alarm and an outdoor temperature of -5 °C is simulated so that the house does not get cold. If a fault occurs with a room sensor, the product triggers an alarm and automatically switches to operating according to the set curve.
  • Page 25 6.3.4 Holiday You use this option to set the number of days that you want the set temperature to be consecutively reduced. For example, if you want to go on holiday. The value by which the temperature is lowered during the period is set in one of the following menus: When holiday is enabled, hot water production is stopped.

  • Page 26: Dhw

    This menu is used to set the hot water comfort level and "Extra DHW". Extra DHW The "Extra DHW" function can be activated here. When the function is activated (by setting the number of hours using the plus sign in the "Hot Water" menu), the heat The "Extra DHW"...

  • Page 27: Weekly Program

    Weekly program In a weekly program (designated "Program" in the display menus), the periods can be set for when a function should be active or inactive during the weekdays. The system does not allow certain functions to be active at the same time according to the same weekly program;...
  • Page 28 6.6.3 Editing a weekly program Go down to the first row and press "OK" to enable editing mode. Time Use the arrow keys to change the time (hours and minutes, respectively). Day by day Use the arrow keys (up arrow /down arrow) to mark active days in bold.

  • Page 29: Operation Data

    Operation data The screen shows operational data with the CTC EcoAir The screen shows operating information with the CTC EcoPart connected. When the pumps are in operation, the pump icons connected. When the pumps are in operation, the pump icons also rotate on screen.
  • Page 30 6.7.1 Operation data, Control unit Status HP upper Current charging mode, see table below. Tank upper °C (60) Temperature and setpoint in the upper part of the tank. Menu Operation Data/Control Unit. Tank lower °C (50) Temperature and setpoint in the lower part of the tank. Electric power kW Electric boiler’s additional power.
  • Page 31 6.7.2 Operation data, Heating circuit* Status Heating Current heating circuit mode, see table below. Primary flow °C (48) Temperature and setpoint (in brackets) supplied to "Operation data, heating circuit" menu. The menu shows the heating circuit. current temperatures and status of defined heating circuits. Return flow °C Temperature returned to heating circuit.
  • Page 32 6.7.3 Operation data, Heat pump (air-to-water) Status Heat pump status, see table below. Model EcoAir M Shows the heat pump model. Compressor 65rps Shows the compressor speed. "R" stands for "Reduced Menu: "Operation data, Heat pump". Mode" (for example, during "Silent Mode"). Charge pump Shows operating status of the charge pump ("On"...
  • Page 33 6.7.4 Operation data, Heat pump (liquid-to-water) Status Heat pump status, see table below. Model EcoPart Shows the heat pump model. Compressor On (On/Off) Shows whether the compressor is operating or not. The menu shows detailed operation data of the selected heat pump.
  • Page 34 6.7.5 Stored Operation data This menu shows cumulative operation values. The operation values shown in the menu screenshots are only examples. The historical operational info presented varies depending on the language choice. Total operation time h 3,500 Menu: "Stored Operation data". Shows the total time the product has been powered.
  • Page 35 6.7.7 Operation data, DHW Mode Normal Shows the active DHW program (Economy/Normal/ Comfort). Tank upper °C (60) Temperature and setpoint in the upper part of the tank. "Operation Data/DHW" menu. Extra DHW "On" means the "Extra DHW" function is active. SmartGrid SG Low pr.

  • Page 36: Installer

    Installer This menu contains four sub-menus: • Display • Settings • Define • Service Menu: "Installer". For "System Information", click the "i" button in the lower right corner of the screen in the "Installer" menu. This displays the product serial number, MAC address, and application and bootloader versions.
  • Page 37 6.8.3 Language Click a flag to select the language. The language selected is highlighted with a green square. To view more language options than those shown in the menu, scroll down the page, or press the down arrow key. Menu: "Installer/Display/Language". 6.8.2 Display setup Sleep delay...

  • Page 38: Settings

    Settings First define the desired functions, see "Installer/Define". Settings are only displayed for enabled functions. Settings can be made here for, among other things, the house’s heating and cooling needs. It is important that the basic heating setting is right for your home. Values which are set incorrectly may mean that your property is not warm enough or that an unnecessarily large amount of energy is being used to heat your property.
  • Page 39 Heat mode, schedule This menu bar is displayed if a weekly program has been defined for the "HC Heat Mode, ext." function in the remote control menu. For more information, refer to: • chapter "Weekly Program" for schedule setting. • section "Def. Remote Control" in the "Installer / Define"...
  • Page 40 Room temp. reduced, Night red. °C -2 (0...-30) Room temp. reduced, Holiday °C -2 (0...-30) The menus are displayed if room sensors are installed If room sensors are installed, for the heating circuit. The number of degrees by which the "Room temp lowered..." the room temperature should be lowered during remote- menu is displayed.
  • Page 41 HP max DHW No (Yes/No) When the Anti Water Hammer has been selected, the "DHW increase" function opens. • "Yes" means that the heat pump will follow the temperature of the radiators for 3 start-ups. When the heat pump performs start-up no. 4 the heat pump works until it achieves “maximum heat pump temperature”.
  • Page 42 Drying period temp °C 25 (25...55) The temperature for "Mode 1/2/3" as shown above is set here. Drying period mode Off (Off/On) This menu bar is displayed for Heating Circuit 2-* if a heating mode (1-3) is selected in the "Drying period mode"...
  • Page 43 Minimum run time (min) 6 (0...20) Minimum operation time in minutes that the compressor is permitted to operate. Even if the tank’s stop temperature has been achieved, the compressor continues to supply energy during this period. SmartGrid block HP No (No/Yes) Read more in the "Remote Control /SmartGrid"...
  • Page 44 Auto adj. charge pump This function starts the calculation of the optimal charge pump speed. The function is activated by marking the “Auto adj. charge pump” line and pressing “OK”. While calculation is in progress, "In Progress" is displayed below the "Charge Pump" row. Once calculation is complete the new value is placed in the "Charge Pump"...
  • Page 45 6.9.3 Settings Electric heater Boiler upper °C 45 (30...60) Temperature at which the electric heater activates and helps EcoZenith i255 to produce DHW when there is great demand. The electric heater is also responsible for providing the house with additional heating. If the house requires a higher temperature than that selected, the control system compensates by automatically raising the temperature of the electric heaters.
  • Page 46 Main fuse A 20 (10...35) The property’s main fuse size is set here. This setting and the fitted current sensors ensure the fuses are protected when using appliances which generate temporary power peaks, for example, cookers, ovens, engine heaters, etc. The product temporarily reduces power drawn where this type of equipment is being used.
  • Page 47 Time Extra DHW Remote Control (min) Time in full or half hour intervals during which the "Extra DHW" function is enabled when activated in the Remote Control menu (Installer/Define system/Remote control/ Extra DHW), or when activated by a CTC SmartControl accessory For CTC SmartControl functionality and settings, please refer to the relevant manual.
  • Page 48 6.9.6 Settings Cooling* Room temp. passive cooling °C 25.0 (10 or 18...30) This is used to set the desired room temperature for cooling. SmartGrid Low price °C 1 (Off, 1...5 ) These menu bars are displayed if room sensors are defined in the "Installer/Define/Passive Cooling"...
  • Page 49 6.9.7 Settings Communication Settings can be made here to control the product with a controlling system. 6.9.7.1 Ethernet DHCP Yes (Yes/No) "Yes" enables automatic connection to the network. If "No", custom router settings (IP address, Netmask and Gateway) as well as DNS setting must be made. Menu: "Installer/Settings/Communication".
  • Page 50 6.9.8 Settings Current sensor These menu bars are displayed if "Current Sensor" is defined in the "Installer/Define Current Sensor" menu. In the menu, specify the phases (L1, L2 and L3) to which the current sensors have been connected. In the lower left corner of the screen, "Invalid configuration"...
  • Page 51 6.9.10 Settings SmartGrid schedule This menu is used to schedule the weekday periods during which the "SmartGrid" functions should be active. This schedule is repeated every week. "SmartGrid" can be used to block a function ("SG Block") or to achieve a temperature increase during periods when the energy price is low ("SG Low") or ("SG Overcapacity").

  • Page 52: Define

    6.10 Define The "Define" menus specify which components and subsystems the system consists of. 6.10.1 Def. Remote control This chapter describes all remote control functions; how they are set up and how they are used. The "Installer/Define/Remote Control" menu defines how the remote control inputs should be activated by specifying one of the following three modes of activation in the "Input"...
  • Page 53 6.10.1.1 Setting the Remote control function, example 1. Define an "Input" First, an input must be assigned to the function or functions to be controlled remotely. This is done in the "Installer/Define/Remote Control" menu. In the example, terminal block K24 is selected as the input for the "HC1 Heat Mode, Ext."...
  • Page 54 6.10.1.2 Remote control functions The "Installer/Define/Remote Control" menu defines Inputs for current remote control functions: • Inputs K22, K23, K24, K25. • wireless accessories in the SmartControl series (Channel 1A, 1B, 2A, 2B, 3A, 3B and so on up to 7B).
  • Page 55 Extra DHW (Off/ K22-K25 /Channel 1A-7B / BMS DI0-7) Upon activation, production of extra DHW begins. When activation stops, extra DHW is produced for a run-on time of 30 min. The "Stop temperature" for extra DHW is set in the "Installer/Settings /DHW Tank/DHW program" menu.
  • Page 56 Tariff EL (Off/ K22-K25 /Channel 1A-7B / BMS DI0-7) This function is used to block the electric heater during periods when the electricity rate is higher. In the "Installer / Define/Remote Control" menu: • specify an "Input" for the remote control function. In the "Installer/Settings/Additional Heat"...
  • Page 57 SmartGrid A / SmartGrid B (Off/ K22-K25 /Channel 1A-7B / BMS DI0-7) In the "Installer / Define/Remote Control" menu: • specify an "Input" for the remote control function. There are three SmartGrid functions: • SmartGrid Low Price • SmartGrid Overcapacity •...
  • Page 58 SmartGrid functions are enabled by activating the K22 (SG A) K23 (SG B) Function SmartGrid inputs in different ways according to the table Open Open Normal on the right. Open Closed Low price To enable the SmartGrid function "SG Low Price" Closed Closed Overcapacity...
  • Page 59 HP Noise reduction (Off/ K22-K25 /Channel 1A-7B / BMS DI0-7) This function can be used to reduce compressor speed in order to reduce the noise level. In the "Installer / Define/Remote Control" menu: • specify an "Input" for the remote control function. In the "Installer / Define/Heat Pump"...
  • Page 60 6.10.2 Def. heating circuit Heating circuit 1-* Yes (Yes/No) Heating circuit 1 (HC 1) is predefined. The rows under Heating Circuit 1 show the other definable heating circuits (HC 1-2 in the example). Room sensor Yes (Yes/No) Select "Yes" if room sensors should be connected to the heating circuit.
  • Page 61 6.10.3 Def. Heat pump Heat pump Off (On/Off) Select whether the heat pump should be On or Off. Flow/level switch None (None/NC/NO) This menu bar is displayed if an "Input" for remote control is defined for the "Flow/level switch" function in the "Installer/Define/Define Remote Control"...
  • Page 62 6.10.5 Def. DHW Extra DHW ext. config. None (None/NC/NO) This menu defines the Normally Open (NO) or Normally Closed (NC) mode for the external control signal when remotely controlling the function. For examples of normal mode settings, refer to the "Def. Remote Control"...
  • Page 63 6.10.8 Def. Passive cooling Free cooling is adjusted using primary flow sensor 2 (B2), which then means that heating circuit 2 and cooling cannot be used simultaneously. Passive cooling Yes (Yes/No) "Yes" means that passive cooling is used. Common Heating and Cooling No (Yes/No) "Yes"...
  • Page 64 6.10.9 Def. SMS Activate No (Yes/No) If "Yes" is selected, the menus below are displayed: Level of signal The signal strength of the reception is shown here. Phone Number 1 The first activated phone number is shown here. Phone Number 2 Menu: "Installer / Define / SMS".

  • Page 65: Service

    6.11 Service NB: This menu is intended for the installer only. Menu: "Installer/Service". 6.11.1 Function test From this menu, the installer can test the connection and function of separate components of the heating circuit. When this menu is activated, all control functions are stopped.
  • Page 66 6.11.1.3 Test Heat pump HP Compressor Off (On/Off) When the compressor is being function tested, the brine and charge pump are also operating so that the compressor does not trigger its pressure switches. HP Brine pump/Fan Off (Off/On) Function test brine pump or fan (air-to-water HP). HP Charge Pump Off (Off/On/ 0...100%) Function test charge pump 0–100%.
  • Page 67 6.11.2 Test Diff. thermostat Pump H-tank (G46) Off (Off/On) Function test of circulation pump to tank transfer. Temperatures This displays current temperatures. • H-tank (B6) 67 °C • Diff thermostat °C (B46) 68 °C Menu: "Installer/Service/ Function Test/Diff Thermostat". 6.11.3 Alarm log In the alarm log, up to 500 alarms can be displayed at the same time.
  • Page 68 6.11.5 Settings coded This menu is intended to set the manufacturer’s operational and alarm limits. A 4-digit code must be specified to be able to amend these limits. However, you can also look without any code to see what options feature in the menu.

  • Page 69: Operation And Maintenance

    7. Operation and Maintenance When the installer has installed your new system, you should check along with the installer that it is in perfect operating condition. Let the installer show you where the switches, controls and fuses are so that you know how the system works and how it should be maintained.

  • Page 70: Troubleshooting/Appropriate Measures

    8. Troubleshooting/appropriate measures The CTC EcoZenith i255 is designed to provide reliable operation and high levels of comfort, and to have a long service life. Various tips are given below which may be helpful and guide you in the event of an operational malfunction.
  • Page 71 If the heat is not even, check: • That the placement of the room sensors is appropriate for the house. • That the radiator thermostats don’t interfere with the room sensor. • That no other heat sources/cold sources interfere with the room sensor. •...

  • Page 72: Information Messages

    Information messages Information messages are displayed when appropriate and are intended to inform users about various operational situations. [I002] HC1 Heating off [I013] Start delay The compressor is not allowed to start too quickly when [I005] HC2 Heating off it has stopped. The delay is usually approx. 10 minutes. Shows that the product is operating in summer-time mode when only DHW is required, not heating.

  • Page 73: Alarm Messages

    Alarm messages If a fault occurs with e.g. a sensor, an alarm is triggered. A message appears on the display with information about the fault. You reset the alarm by pressing the Reset Alarm button on the display. If several alarms are triggered, they are displayed one after the other. A persisting fault must first be rectified before it can be reset.
  • Page 74 Alarm messages Description This message appears when the expansion valve’s evaporation temperature is [E049] Stop, high evap. exp. high. valve Press reset and check whether the alarm recurs. If the fault recurs, contact your installer. This message appears when the expansion valve’s overheat temperature is [E050] Stop, low overheat.
  • Page 75 Alarm messages Description An alarm message is displayed if an error occurs with a sensor that is not sensor [Exxx] ' connected or has short-circuited and if the value is outside the sensor’s range. If this sensor is important to the system’s operation, the compressor stops. This requires the alarm to be reset manually after the fault has been rectified.

  • Page 76: Installation

    Installation 9. Installation This section is aimed at anyone responsible for one or more of the installations required to ensure that the product works the way the property owner wants. Take your time going through functions and settings with the property owner and answer any questions.

  • Page 77: Pipe Installation

    10. Pipe installation   The installation must be carried out in accordance with the applicable   standards. The product must be connected to an expansion vessel in an open or closed system. Do not forget to flush the heating circuit clean before connecting. Apply all the installation settings based on the description in the section entitled “First start”.
  • Page 78 10.1.2 Pump curve charge pump The diagram below shows the pump curve for the factory-installed charge pump for a Grundfos UPM2 15-60 130 heat pump. [kPa] Q [m³/h] Q [l/s] Pump curve charge pump 15–75, 130 (Accessories) ≤ The diagram below shows the pump curve for CTC accessory item no. 586988301 Grundfos UPM2 15-75 130 pump.

  • Page 79: Schematic Diagram

    10.2 Schematic diagram This shows the main connection between the CTC EcoZenith i255 and the property’s heating circuit and DHW system. Different installations and systems may look different, e.g. a one or two-pipe system, which means that the finished installation may be different. Cold water inlet Heating circuit 2 can only give the same...
  • Page 80 Circulation pump, heating circuit (G1) (G2) NB: It is important to fit The circulation pump is fitted on the boiler’s primary flow and must be a shut-off valve (94) to connected electrically from the boiler; see chapter on Electrical installation. both the primary flow and return flow.
  • Page 81 Expansion vessel connection The CTC EcoZenith i255 is best connected to a closed expansion vessel. The CTC EcoZenith i255 is designed to be fitted to an 18 l closed expansion vessel. The expansion vessel is either fitted in the area under the tank or on top of the product (see pictures).

  • Page 82: Connection To Heat Pump

    10.3 Connection to heat pump The heat pump is connected to the top (CTC EcoZenith i255L, see figure below) or bottom (CTC EcoZenith i255H, see figure on following page). Pipe connection for CTC EcoZenith i255 L In CTC EcoZenith i255 L, the charge pump for the heat pump is factory- fitted.
  • Page 83 Pipe connection for CTC EcoZenith i255 H On CTC EcoZenith i255H, the heat pump is connected directly to the supplied charge pump (3) located under the tank. Incoming (heated water) from heat pump Ø22. Outgoing (cold water) to heat pump, union 3/4. The charge pump on CTC EcoZenith i255 H is fitted to the outgoing connection to the heat pump (behind the 3-way valves).

  • Page 84: Schematic Diagram Of Passive Cooling - Combined Cooling/Heating

    10.4 Schematic diagram of passive cooling – Combined cooling/heating CTC EcoZenith i255...

  • Page 85: Schematic Diagram Of Passive Cooling In Separate

    10.5 Schematic diagram of passive cooling in separate heating circuits. CTC EcoZenith i255...

  • Page 86: Electrical Installation

    11. Electrical installation Installation and connection in the CTC EcoZenith i255 must be undertaken by an authorised electrician. All wiring must be installed according to applicable provisions. Safety switch The installation should be preceded by an omnipolar safety switch according to overvoltage category III, which ensures disconnection from all electric power sources.

  • Page 87: Positioning Of Electrical Components

    11.2 Positioning of electrical components Automatic circuit breakers Backup heating Max thermostat thermostat Upper electric heater Communication HP Terminal block: G51-G53 Brown cable: G51 White cable: G52 Connection to display Green cable: G53 Terminal block: G11-G22 Terminal block: G41-G48 Terminal block: G31-G40 Terminal block: A11-A20 Terminal block:...

  • Page 88: Electrical Connection To Heat Pump

    11.3 Electrical connection to heat pump General The heat pump is powered from the CTC EcoZenith i255 via a separate connector. Charge pump The factory-installed charge pump for heat pumps is connected internally in Charge pump Molex switch the CTC EcoZenith i255 L. The charge pump is connected to CTC EcoZenith i255 H in the pre- assembled connector (Molex and PWM) located under the electrical cabinet.
  • Page 89 11.3.2 Heat pump power supply The heat pump must be supplied with power from CTC EcoZenith i255 using the provided black connector located in the bottom of the electrical cabinet. (NB! Not applicable to CTC EcoAir 610, 614, 620. The products are powered separately.

  • Page 90: Extra Low Voltage Protection

    11.4 Extra low voltage protection The following outputs and inputs have extra low voltage protection: current sensor, outdoor sensor, room sensor, primary flow sensor, return sensor, NR/SO, temperature sensor, level switch and PWM signals. Connection of outdoor sensor (B15) The sensor should be set up on the house’s northwest or north side, so that it is not exposed to morning and evening sun.
  • Page 91 11.4.1 Current sensor connection The three current sensors, one for each phase, are fitted on the fuse panel in the following manner: Each phase from the electricity distribution board supplying the product is channelled through a current sensor before termination at the relevant terminal.
  • Page 92 11.4.2 Terminal boards There are terminal boards for sensors, radiator pumps, etc. behind the panel. Open the spring block first using a screwdriver before the cable is inserted. Otherwise, there is a risk of poor contact. Also make sure that the conductor is sufficiently stripped.

  • Page 93: Settings To Be Carried Out By The Installation Electrician

    11.5 Settings to be carried out by the installation electrician The following settings shall be made by the installation electrician after installation: • Select main fuse size. • Select the power limitation for the electric heater. • Check room sensor connection. •...
  • Page 94 11.5.2 Switching to 18 kW electric heater power Warning Begin CTC EcoZenith i255 400 V 3N~ can be reconnected to an 18 kW electric by disconnecting heater. the power to the NB: Installation must be carried out by a qualified electrician. product. Installation must be carried out by a qualified electrician.
  • Page 95 A code is printed on the black wires which indicates the cable number and connection position, e.g. 46 K2:1, where the 1 indicates screw joint position 1. - Begin by loosening the screw joint at position 1 and freeing the brown wire.

  • Page 96: Connection Of Pump (G46) To Differential Thermostat Function

    11.6 Connection of pump (G46) to Differential thermostat function 230 V 1N~ The circulation pump (G46) is connected at the following terminal blocks: Relay card in EcoZenith i255 (see wiring diagram). Note the cable colours! Phase: brown Terminal block A:11(EcoZenith i255) Neutral: blue...

  • Page 97: Component List, Wiring Diagram

    11.9 Component list, wiring diagram Component Display Relay/main card CTC Solar controls/Expansion card Soft-start card with motor protection and contactor function HP control card Primary flow sensor 1 NTC 22 Primary flow sensor 2 NTC 22 Upper tank sensor NTC 22 Lower tank sensor NTC 22 Return sensor...

  • Page 98: Wiring Diagram 400 V 3N

    11.10 Wiring diagram 400 V 3N~ CTC EcoZenith i255...
  • Page 99 CTC EcoZenith i255...

  • Page 100: Wiring Diagram 230 V 1N

    11.11 Wiring diagram 230 V 1N~ CTC EcoZenith i255...
  • Page 101 CTC EcoZenith i255...

  • Page 102: Wiring Diagram 230 V 3

    11.12 Wiring diagram 230 V 3~ CTC EcoZenith i255...
  • Page 103 CTC EcoZenith i255...

  • Page 104: Installation Communication

    12. Installation Communication The back of the display unit has 3 communication ports. Menu: "Installer/Define/Communication". Communication Display communication ports Port 1. RS485 port without galvanic protection. For external equipment, e.g. BMS, CTC AXS Define AXS: "Yes" permits BMS via the RS485 port and "CTC AXS"...

  • Page 105: Installing The Network Cable

    Turn off the product’s main 12.1 Installing the network cable switch before opening the front. 1. Remove the front plate. Run the network cable in front of the product’s top cover edge according to the arrows. 2. Open the ferrite from the packaging, clamp around the ethernet cable with the connector.

  • Page 106: Ctc Remote - Screen Mirroring

    12.2 CTC Remote - Screen Mirroring • Connect the ethernet cable, see previous page. • Installer/Define/Communication/Web – Yes. Permits the product to connect with unencrypted web traffic on local area networks. Internet router and firewall required. Tablet/Smartphone/PC as a touchscreen for local area network •...

  • Page 107: First Start

    13. First start When the CTC EcoZenith i255 is delivered, the heat pump is blocked to avoid it being started unintentionally. EcoZenith i255 can be installed and started before the ground source/geothermal or air-to-water heat pump is commissioned. EcoZenith i255 can also be started without a room sensor being fitted since the set curve will regulate the heating.
  • Page 108 First start Switch on the power using the safety switch, the display will turn on. The product will now ask the following: Select the language and press "OK". Confirm that the system is filled with water and press OK. Press "Next"...
  • Page 109 CTC EcoZenith i255...
  • Page 110 CTC EcoZenith i255...
  • Page 111 CTC EcoZenith i255...
  • Page 112 162 505 67-1 2020-08-27 Enertech AB. P.O Box 309 SE-341 26 Ljungby Sweden. www.ctc.se, www.ctc-heating.com...

This manual is also suitable for:

Ecozenith i255 hEcozenith i255 lEcozenith i255 l 1 x 230 vEcozenith i255 l 3 x 230 v

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