Nibe S1256 Installer Manual
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Nibe S1256 Installer Manual

Nibe S1256 Installer Manual

Ground source heat pump
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Installer manual
Ground source heat pump
NIBE S1256
IHB EN 2326-2
631115

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Summary of Contents for Nibe S1256

  • Page 1 Installer manual Ground source heat pump NIBE S1256 IHB EN 2326-2 631115...
  • Page 2 Here, you can start or stop a temporary increase in the hot water Here, you can find information about product name, the product's temperature. serial number, the version of the software and service. When there is new software to download, you can do it here (provided that S1256 is connected to myUplink).

  • Page 3: Table Of Contents

    General Item register Connections Settings Contact information 6 Commissioning and adjusting Preparations Filling and venting Start-up and inspection Setting the heating curve 7 myUplink Specification Connection Range of services 8 Control - Introduction Display unit NIBE S1256 Table of Contents...

  • Page 4: Important Information

    Safety information Serial number This manual describes installation and service procedures The serial number can be found at the bottom right on S1256, for implementation by specialists. in the display on the home screen "Product overview" and on the type plate (PZ1).

  • Page 5: Inspection Of The Installation

    Shut off valves Circulation pump setting Electricity Connections Main voltage Phase voltage Fuses heat pump Fuses property Outside sensor Room sensor Current sensor Safety breaker Earth circuit-breaker Set emergency mode in menu 7.1.8.2 NIBE S1256 Chapter 1 | Important information...

  • Page 6: Delivery And Handling

    S1256 should be transported and stored vertically in a dry prox. 50 mm free space is required on each side, to allow place. When being moved into a building, S1256 may be leant the side panels to be removed (see image). All service on back 45 °.

  • Page 7: Supplied Components

    Pull the panel's top edge towards you and lift diagonally The kit of supplied items is placed in packaging on top of upwards to remove it from the frame. the heat pump. NIBE S1256 Chapter 2 | Delivery and handling...
  • Page 8 4. Press the top of the front section against the frame and Hook one bottom corner of the front onto the frame. screw it into place. Hook the other corner in place. 3. Check the display is straight. Adjust if necessary. Chapter 2 | Delivery and handling NIBE S1256...

  • Page 9: Removing Insulation

    The insulation can be removed to make installation easier. Remove the screws from the upper and lower edges. Twist the panel slightly outwards. 3. Move the panel outwards and backwards. 4. Assembly takes place in the reverse order. NIBE S1256 Chapter 2 | Delivery and handling...

  • Page 10: The Heat Pump Design

    Electrical anode Choke On/off button USB socket Network connection for myUplink 1 S1256-8 3x400 V is not equipped with miniature circuit breakers (FC1). 2 Only heat pump with enamelled vessel. 3 Only for S1256-13 3x400 V MISCELLANEOUS Rating plate Identification plate, cooling module...

  • Page 11: Distribution Boxes

    Choke EMC filter 1 Only heat pump with enamelled vessel. 2 Only for S1256-13 3x400 V 3 Only for S1256-13 3x400 V 4 Only for S1256-13 1x230 V / 3x230 V NIBE S1256 Chapter 3 | The heat pump design...

  • Page 12: Cooling Module

    13/18 kW 1x230 V 13 kW BT17 3x230 V 13 kW BT84 BT14 GQ10 FQ14 BT12 XL20 XL21 BT10 BT15 QA40 BT15 EB10 BT11 13/18 kW BT12 BT10 QA40 BT15 BT11 Chapter 3 | The heat pump design NIBE S1256...
  • Page 13 Temperature sensor, suction gas evaporator ELECTRICAL COMPONENTS Input circuit board Capacitor EB10 Compressor heater FQ14 Temperature limiter, compressor QA40 Inverter Choke EMC-filter COOLING COMPONENTS Evaporator Condenser GQ10 Compressor Drying filter Expansion valve NIBE S1256 Chapter 3 | The heat pump design...

  • Page 14: Pipe Connections

    SYMBOL KEY Pipe installation must be carried out in accordance with Symbol Meaning current norms and directives. S1256 can operate with a re- Unit box turn temperature of up to 58 °C and an outgoing temperat- Shut-off valve ure from the heat pump of 70 (65 °C with only the com- pressor).

  • Page 15: Dimensions And Pipe Connections

    Heating system with lower temperature SYSTEM DIAGRAM S1256 consists of heat pump, water heater, immersion heater, circulation pumps and control system. S1256 is connected to the brine and heating medium circuits. In the heat pump evaporator, the brine (water mixed with...

  • Page 16: Brine Side

    • shut-off valve Because the temperature of the brine system can fall below Install the shut-off valve as close to S1256 as possible. 0 °C, it must be protected against freezing down to -15 °C. • enclosed filterball (QZ2) When making the volume calculation, use 1 litres of ready Install the filterball as close to S1256 as possible.

  • Page 17: Climate System

    Climate system A climate system is a system that regulates the indoor temperature with the help of the control system in S1256 and, for example, radiators, underfloor heating, underfloor cooling, fan coils, etc. CONNECTING THE CLIMATE SYSTEM Installation alternative Install as follows: S1256 can be installed in several different ways, some of •...
  • Page 18 UKV is an accumulator tank that is suitable for connection The installation can be supplemented with the exhaust air to a heat pump or another external heat source, and can module NIBE FLM S45 to provide ventilation recovery. have several different applications. •...
  • Page 19 -EP25-RM1 POOL With the POOL 40 accessory, you can heat the pool with your system. During pool heating, the heating medium circulates between the S1256 and the pool exchanger using the heat pump’s internal circulation pump. -CL11 -CL11-AA25 -CL11-EP5 -CL11-GP9...

  • Page 20: Electrical Connections

    If the building is equipped with an earth-fault breaker, damage to the heat pump electronics. S1256 should be equipped with a separate one. • S1256 must be installed via an isolator switch. The cable NOTE area has to be dimensioned based on the fuse rating used. •...
  • Page 21 89 °C and it is reset manually. Resetting The temperature limiter (FQ10) is accessed behind the front cover. Reset the temperature limiter by pressing its button (FQ10-S2). NIBE S1256 Chapter 5 | Electrical connections...

  • Page 22: Connections

    "Selectable During service, all supply circuits must be discon- inputs". nected. Remove the bridges from terminal block X5. Control voltage (230 V ~ 50Hz) connects to AA2:X5:N, X5:L and X6-2 (PE). Chapter 5 | Electrical connections NIBE S1256...
  • Page 23 Closed radiator thermostats can also cause problems. S1256 operates without room sensor, but if you want to read Sensors the home’s indoor temperature from the display on S1256, Outside sensor the room sensor must be fitted.
  • Page 24 X30:9 is the common terminal block for the three current sensors. S1256 is equipped with a load monitor that, with the help of a current sensor, controls the power steps for the electric additional heat by redistributing the power between the...
  • Page 25 Instructions for connecting accessories are provided in the manual accompanying the accessory. See section "Accessor- ies" for a list of the accessories that can be used with S1256. Connection for communication with the most common ac- Network cable for myUplink (W130) cessories is shown here.
  • Page 26 Potential free signal of type NO or NC. The output is a potential-free switching relay. • pressure switch for climate system (NC). If S1256 is switched off or in emergency mode, the relay is in C-NC position. • level monitor / pressure switch / flow monitor for brine (NC).

  • Page 27: Settings

    Closed or open switch means one of the following: – Control Blocking (A: Closed, B: Open) • circulation pump for hot water circulation "SG Ready" is active. The compressor in S1256 and addi- tional heat are blocked. • external heating medium pump – •...
  • Page 28 In addition to this, there is the current for compressor oper- 3x230 V, S1256-8 ation. Max electrical Maxphasecur- Maxphasecur- Max phase When the current sensors are connected, S1256 monitors addition (kW) rent L1(A) rent L2(A) current L3(A) the phase currents and allocates the power steps automat- –...
  • Page 29 You can activate the emergency mode both when S1256 is running and when it is switched off. To activate when S1256 is running: press and hold the on/off button (SF1) for 2 seconds and select "emergency mode" from the shutdown menu.

  • Page 30: Commissioning And Adjusting

    Check the brine system for leakage. NOTE Connect the filling pump and return line on the brine Do not start S1256 if there is a risk that the water system's filling connection (accessory). in the system has frozen. 3. If alternative 1 is used (level vessel), close the valve un- der the level vessel.

  • Page 31: Start-Up And Inspection

    Follow the instructions in the display’s start guide. If the Expansion vessel start guide does not start when you start the S1256, you If a pressure expansion vessel (CM3) is used can start it manually in menu 7.7.
  • Page 32 To set the correct flow in the brine system, the brine pump Language must run at the correct speed. S1256 has a brine pump that is controlled automatically in standard mode. Certain func- tions and accessories may demand that it be run manually, in which case the correct speed must be set.
  • Page 33 Climate system Available pressure, kPa S1256 has a heating medium pump that can be controlled Electrical output, W automatically. For manual operation, deactivate "Auto" in menu 7.1.2.2 and then set the speed according to the dia- S1256 8 kW grams below.

  • Page 34: Setting The Heating Curve

    The task of the curve is to provide an uniform P100% indoor temperature, regardless of the outdoor temperature, and thereby energy-efficient operation. Based on this curve, the S1256 determines the temperature of the water to the P80% climate system (the supply temperature) and thus the indoor temperature.
  • Page 35 Outdoor temp. °C Curve offset Select the climate system (if more than one) for which the curve is to be changed. Select curve and offset. 3. Select max and min supply temperature. NIBE S1256 Chapter 6 | Commissioning and adjusting...

  • Page 36: Myuplink

    Visit myuplink.com for more information. Specification You need the following in order for myUplink to be able to communicate with your S1256: • wireless network or network cable • Internet connection •...

  • Page 37: Control - Introduction

    For hard switch off: press and hold the on/off button for 5 seconds. To activate emergency mode when S1256 is switched off: press and hold the on/off button (SF1) for 5 seconds. (De- THE STATUS LAMP activate the emergency mode by pressing once.)

  • Page 38: Navigation

    Navigation FACTORY SETTING Factory set values are marked with *. S1256 has a touchscreen where you simply navigate by pressing and dragging with your finger. SELECT Most options and functions are activated by lightly pressing on the display with your finger.
  • Page 39 Current temperature The drop-down menu shows the current status for S1256, Set temperature what is in operation and what S1256 is doing at the moment. Works to set temperature The functions that are in operation are highlighted with a frame.

  • Page 40: Climate Systems And Zones

    This example shows a property with two climate systems (1 and 2, two separate floors) divided into four zones (1-4, four My system different rooms). Temperature and demand-controlled Connection ventilation can be controlled individually for each zone (ac- cessory required). Chapter 8 | Control - Introduction NIBE S1256...

  • Page 41: Control - Menus

    Set the desired value. The new value is shown on the right- Caution hand side of the symbol on home screen heating. A slow heating system such as underfloor heating may be inappropriate for controlling with room sensors. NIBE S1256 Chapter 9 | Control - Menus...
  • Page 42 Alternative: on/off temperature. It is from this heating curve that S1256 determ- ines the temperature of the water to the climate system, Here, you select the zone to which a sensor will belong. It is the supply temperature, and therefore the indoor temperat- possible to connect multiple room sensors to each zone.
  • Page 43 Set the minimum temperature on the supply temperature to the climate system. This means that S1256 never calcu- lates a temperature lower than that set here. If it feels cold in the house at e.g. -2°C, "outdoor If there is more than one climate system the setting can be temp.

  • Page 44: Menu 2 - Hot Water

    Here, you can select the length of time between increases When the time has run out, S1256 returns to the set demand in the hot water temperature. The time can be set between mode.
  • Page 45 NOTE Hot water circulation is activated in menu 7.4 "Selectable in/outputs" or via accessory. NIBE S1256 Chapter 9 | Control - Menus...

  • Page 46: Menu 3 - Info

    Setting range: 1 – 24 months Here, you can see a diagram showing how much energy S1256 supplies and consumes. You can select which parts of the installation will be included in the log. It is also possible to activate display of indoor and/or outdoor temperature.

  • Page 47: Menu 4 - My System

    If you deselect "Add. heat" it may mean that insuf- ficient hot water and/or heating in the accommod- The operating mode for S1256 is normally set to "Auto". It is ation is achieved. also possible to select operating mode "Add. heat only". Se- lect "Manual"...
  • Page 48 Setting range: 0 – 10 water is set to large demand mode (immersion heater per- mitted). You can select whether you want S1256 to adjust the indoor climate based on the weather forecast here. NOTE You can set factor for outdoor temperature. The higher the The function must be connected to two AUX inputs value, the greater the effect from the weather forecast.
  • Page 49 Setting options: Price per kWh / CO2 Here, you specify the country in which the product has been installed. This allows access to country-specific settings in If Smart Energy Source™ is activated, S1256 prioritises your product. how/to what extent each docked energy source will be used.
  • Page 50 All settings that are available to the user (including advanced menus) can be reset to default values here. Caution After the factory setting, personal settings such as the heating curve must be reset. Chapter 9 | Control - Menus NIBE S1256...

  • Page 51: Menu 5 - Connection

    All settings made since opening the menu can be reset by selecting "Reset". MENU 5.4 – WIRELESS UNITS In this menu you connect wireless units, and manage set- tings for connected units. NIBE S1256 Chapter 9 | Control - Menus...

  • Page 52: Menu 6 - Scheduling

    If a room sensor is not activated, the desired offset of the heating curve is set. One step is usually enough to change the room temperature by one degree, but in some cases several steps may be required. Chapter 9 | Control - Menus NIBE S1256...

  • Page 53: Menu 7 - Installer Settings

    7.9.1 - Change log 7.9.2 - Extended alarm log 7.9.3 - Black box 1 This menu is also shown in any installed subordinate heat pump’s limited menu system. 2 Consult the accessory’s Installer Manual. NIBE S1256 Chapter 9 | Control - Menus...
  • Page 54 Auto: The heating medium pump runs according to the dium pump manually, you set the desired pump speed here. current operating mode for S1256. Minimum permitted speed: Here, you can restrict the pump Intermittent: The heating medium pump starts approx. 20 speed to ensure that the heating medium pump is not al- seconds before and stops 20 seconds after the compressor.
  • Page 55 Setting range: -12 – 15 °C Setting range S1256-8 3x400 V: 0 - 6.5 kW Max brine in Setting range S1256-13 and -18 3x400 V: 0 - 9 kW Setting range: 10 – 35 °C Max set el power (SG Ready) Setting range 1x230V: 0 –...
  • Page 56 Alternative: on/off difference additional heat can never exceed max difference compressor Select how you want the S1256 to alert you that there is an Max diff compressor: If the current supply temperature ex- alarm in the display here. ceeds the calculated supply line by the set value, the degree The different alternatives are that S1256 stops producing minute value is set to 1.
  • Page 57 "Operating prioritisation" is normally set in "Auto", but it is Setting range: 10 – 1,000 DM also possible to set prioritisation manually. Degree minutes cooling Auto: In auto mode, S1256 optimises operating times Alternatives: -3,000 – 3,000 DM between different requirements. Stepping diff compressors Manual: You select how long the installation will work with Setting range: 10 –...
  • Page 58 Marking frame: Press the marking frame you want to change. multi-installation’s main unit. In systems with only one heat Select one of the selectable components. pump, S1256 will be the main unit. If there is another main Symbol Description unit in the installation, you enter the ID that S1256 will have.
  • Page 59 The menu is only visible when communication with the in- verter is lost. MENU 7.5.8 - SCREEN LOCK Here, you can choose to activate the screen lock for S1256. During activation, you will be asked to enter the required code (four digits). The code is used when:...
  • Page 60 When resetting, the start guide is displayed the next time S1256 restarts. MENU 7.7 - START GUIDE When S1256 is started for the first time, the start guide is automatically activated. From this menu, you can start it manually. MENU 7.8 - QUICK START You can quick start the compressor here.

  • Page 61: Service

    You can activate the emergency mode both when S1256 is running and when it is switched off. To activate when S1256 is running: press and hold the on/off button (SF1) for 2 seconds and select "emergency mode" from the shutdown menu.
  • Page 62 A Draining the climate system in the heat pump small amount of brine will flow into the vessel. If S1256 requires servicing, drain the climate system as fol- 3. Air must enter the system to allow the remaining brine lows: to run out.
  • Page 63 HELPING THE CIRCULATION PUMP TO START Close the shut-off valves (EP14-QM31), (EP14-QM32), (EP14-QM33) and (EP14-QM34). The circulation pump in S1256 has an automatic start help function. If necessary the pump can be started manually. Drain the compressor module according to the instruc-...
  • Page 64 Interval Setting range: 1 s – 60 min Here you can choose how current measurement values from S1256 should be saved onto a log file on the USB memory. Set the desired interval between loggings. Select “Start logging". 3. The relevant measurement values from S1256 are now saved in a file on the USB memory at the set interval until you select "Stop logging".
  • Page 65 Save settings: Here, you save menu settings in order to re- Available registers are shown in the display for the currect store them later or to copy the settings to another S1256. product and its installed and activated accessories. Display backup: Here, you save both menu settings and Export register measurement values, e.g.

  • Page 66: Disturbances In Comfort

    "Stop additional heat" function has occurred in menu 7.1.10.2 - "Auto mode setting". that S1256 cannot remedy itself. On the display, you can – If mode "Manual" is selected, select "Additional heat". see what type of alarm it is and reset it.
  • Page 67 Enter menu 4.1 - "Operating mode". If "Auto" mode is selected, select a higher value for "Stop heating" in – S1256 does not call on heating, hot water or cooling. menu 7.1.10.2 - "Auto mode setting". • Compressor blocked due to the temperature conditions.

  • Page 68: Accessories

    ROOM UNIT RMU S40 The room unit is an accessory with a built-in room sensor, which allows the control and monitoring of S1256 to be carried out in a different part of your home to where it is located. Part no. 067 650...
  • Page 69 Part no. 067 060 WIRELESS ACCESSORIES It is possible to connect wireless accessories to S1256, e.g. room, humidity, CO sensors. For more information, as well as a complete list of all available wireless accessories, see myuplink.com.

  • Page 70: Technical Data

    Technical data Dimensions * This dimension applies at 90° angle on the brine pipes (side connection). The dimension can vary approx. ±100 mm vertically as the brine pipes consist in part of flexible pipes. Chapter 13 | Technical data NIBE S1256...

  • Page 71: Electrical Data

    Max operating current including 2 – 4 kW immersion heater (Recommended fuse rating). 16(20) Max operating current including 5 – 7 kW immersion heater (Recommended fuse rating). 20(25) Max operating current including 9 kW immersion heater, requires reconnection (Recommended fuse rating). 22,5(25) NIBE S1256 Chapter 13 | Technical data...
  • Page 72 It is the responsibility of the installer or user of the equipment to ensure, through consultation with the distribution network operator if required, that the equipment is only connected to a supply with a short circuit power Ssc equal to or greater than 2.35 MVA. Chapter 13 | Technical data NIBE S1256...

  • Page 73: Technical Specifications

    4.2 (42) / 0.3 (3) (bar) Brine circuit Min/max system pressure brine 0.05 (0.5) / 0.45 (4.5) (bar) Flow at Pdesignh 0.43 0.67 0.68 Max external available pressure at Pdesignh Min/Max incoming Brine temp °C see diagram NIBE S1256 Chapter 13 | Technical data...
  • Page 74 4 For 18 kW, the value is given at Delta T=4°C, for others at Delta T=3°C 5 Brine in 0°C / Water out 45°C² 6 At Delta T=10°C 7 With feet removed, the height is approx. 1,950 mm. 8 Cu: copper, Rf: stainless steel, E: enamel Chapter 13 | Technical data NIBE S1256...
  • Page 75 °C Min. heating capacity S1256-18 Heating capacity, Avgiven värmeeffekt, kW 35°C 55°C 55°C 35°C Incoming brine temperature, Inkommande köldbärartemp, °C °C Max. heating capacity Min. heating capacity Max. heating capacity Min. heating capacity NIBE S1256 Chapter 13 | Technical data...
  • Page 76 Min. cooling capacity Min. heating capacity S1256-18 Cooling capacity, Avgiven kyleffekt, kW 35°C 55°C 55°C 35°C Incoming brine temperature, Inkommande köldbärartemp,°C °C Max. cooling capacity Max. heating capacity Min. heating capacity Min. cooling capacity Chapter 13 | Technical data NIBE S1256...

  • Page 77: Energy Labelling

    Water heating energy efficiency, cold climate Seasonal space heating energy efficiency, warm 219 / 163 226 / 164 233 / 171 climate Water heating energy efficiency, warm climate Sound power level L outdoors NIBE S1256 Chapter 13 | Technical data...
  • Page 78 The reported efficiency of the package also takes the controller into account. If an external supplementary boiler or solar heating is added to the package, the overall efficiency of the package should be recalculated. Chapter 13 | Technical data NIBE S1256...
  • Page 79 Daily energy consumption 6.329 Daily fuel consumption elec fuel Annual energy consumption 1,331 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden NIBE S1256 Chapter 13 | Technical data...
  • Page 80 Daily energy consumption 6.294 Daily fuel consumption elec fuel Annual energy consumption 1,325 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden Chapter 13 | Technical data NIBE S1256...
  • Page 81 Daily energy consumption 6.333 Daily fuel consumption elec fuel Annual energy consumption 1,342 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden NIBE S1256 Chapter 13 | Technical data...

  • Page 82: Item Register

    Manage alarm, 66 Installation alternative Troubleshooting, 66 Buffer vessel UKV, 18 Docking alternatives Connecting hot water circulation, 17 Free cooling, 19 Water heater with immersion heater, 17 Ground water system, 18 Installation area, 6 Pool, 19 Item register NIBE S1256...
  • Page 83 Draining the climate system, 62 Draining the hot water heater, 61 Drawing out the cooling module, 63 Emptying the brine system, 62 Helping the circulation pump to start, 63 Modbus TCP/IP, 65 Temperature sensor data, 63 NIBE S1256 Item register...

  • Page 87: Contact Information

    Tel: +48 (0)85 66 28 490 Hannabadsvägen 5, 285 21 Markaryd Tel. +41 (0)58 252 21 00 biawar.com.pl Tel: +46 (0)433-27 30 00 info@nibe.ch info@nibe.se nibe.ch nibe.se For countries not mentioned in this list, contact NIBE Sweden or check nibe.eu for more information.
  • Page 88 WS release date: 2023-06-29 18:09 Publish date: 2023-07-04 07:44 This is a publication from NIBE Energy Systems. All product illustrations, facts and data are based on the available information at the time of the publication’s approval. NIBE Energy Systems makes reservations for any factual or printing errors in this publication.

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