Nibe S1255 Installer Manual
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Nibe S1255 Installer Manual

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Installer manual
Ground source heat pump
NIBE S1255
IHB EN 2150-1
631729

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Summary of Contents for Nibe S1255

  • Page 1 Installer manual Ground source heat pump NIBE S1255 IHB EN 2150-1 631729...
  • 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 S1255 is connected to myUplink).

  • Page 3: Table Of Contents

    Technical specifications General Energy labelling Connections Settings Item register 6 Commissioning and adjusting Contact information Preparations Filling and venting Start-up and inspection Setting the cooling/heating curveSetting the heating curve 7 myUplink Specification Connection Range of services NIBE S1255 Table of Contents...

  • Page 4: Important Information

    Read the User Manual. Read the Installer Manual. Serial number The serial number can be found at the bottom right on S1255, in the display on the home screen "Product overview" and on the type plate(PZ1). Caution You need the product's (14 digit) serial number for servicing and support.

  • 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 S1255 Chapter 1 | Important information...

  • Page 6: Delivery And Handling

    S1255 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, S1255 may be leant the side panels to be removed (see image). All service on back 45 °.

  • Page 7: Supplied Components

    The kit of supplied items is placed in packaging on top of the heat pump. Handling panels ASSEMBLE THE FRONT OPEN FRONT HATCH Hook one bottom corner of the front onto the frame. Press the hatch's top left corner to open it. NIBE S1255 Chapter 2 | Delivery and handling...
  • Page 8 Twist the panel slightly outwards. 4. Press the top of the front section against the frame and screw it into place. 3. Move the panel outwards and backwards. 4. Assembly takes place in the reverse order. Chapter 2 | Delivery and handling NIBE S1255...

  • Page 9: Removing Insulation

    Removing insulation The insulation can be removed to make installation easier. NIBE S1255 Chapter 2 | Delivery and handling...

  • Page 10: The Heat Pump Design

    Electrical anode Choke On/off button USB socket Network connection for myUplink 1 S1255-6 3x400 V is not equipped with miniature circuit breakers (FC1). 2 Only heat pump with enamelled vessel. 3 Only for S1255-12 3x400 V. MISCELLANEOUS Rating plate Identification plate, cooling module...

  • Page 11: Distribution Boxes

    Temperature limiter FQ10-S2 Reset button for temperature limiter BT10 Choke Choke 1 Only heat pump with enamelled vessel. 2 Only for 12 kW 3x400 V BT11 16 kW BT12 BT10 BT11 NIBE S1255 Chapter 3 | The heat pump design...
  • Page 12 COOLING COMPONENTS 3x400V 12 kW Evaporator Condenser GQ10 Compressor Drying filter BT14 GQ10 Expansion valve QA40 BT17 XL21 XL20 BT15 EB10 16 kW BT14 GQ10 QA40 BT17 BT15 XL20 EB10 XL21 Chapter 3 | The heat pump design NIBE S1255...

  • Page 13: Pipe Connections

    SYMBOL KEY Pipe installation must be carried out in accordance with Symbol Meaning current norms and directives. S1255 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- Non-return valve pressor).

  • Page 14: Dimensions And Pipe Connections

    Dimensions and pipe SYSTEM DIAGRAM S1255 consists of heat pump, water heater, immersion connections heater, circulation pumps and control system. S1255 is connected to the brine and heating medium circuits. In the heat pump evaporator, the brine (water mixed with...

  • Page 15: Brine Side

    If this is not possible, airvents • shut-off valve should be used. Install the shut-off valve as close to S1255 as possible. Because the temperature of the brine system can fall below 0 °C, it must be protected against freezing down to -15 °C. •...

  • Page 16: Climate System

    Climate system A climate system is a system that regulates the indoor temperature with the help of the control system in S1255 and, for example, radiators, underfloor heating, underfloor cooling, fan coils, etc. CONNECTING THE CLIMATE SYSTEM Installation alternative Install as follows: S1255 can be installed in several different ways, some of •...
  • Page 17 With the POOL 40 accessory, you can heat the pool with your system. During pool heating, the heating medium circulates between the S1255 and the pool exchanger using the heat pump’s internal circulation pump. COOLING The accessory PCS 44 allows the connection of passive cooling, for example with fan coils.

  • Page 18: Electrical Connections

    S1255 should be equipped with a separate one. • S1255 must be installed via an isolator switch. The cable NOTE area has to be dimensioned based on the fuse rating used. Do not start the system before filling up with wa- •...
  • Page 19 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 S1255 Chapter 5 | Electrical connections...

  • Page 20: Connections

    If the voltage to the immersion heater and/or compressor is lost for a period, this must be blocked at the same time via the selectable inputs, see section "Selectable inputs/out- puts – Possible selections for AUX inputs". Chapter 5 | Electrical connections NIBE S1255...
  • Page 21 Closed radiator thermostats can also cause problems. S1255 operates without room sensor, but if you want to read Sensors the home’s indoor temperature from the display on S1255, Outside sensor the room sensor must be fitted.
  • Page 22 Electrical distribution unit manual accompanying the accessory. See section "Accessor- NIBE product ies" for a list of the accessories that can be used with S1255. Connection for communication with the most common ac- cessories is shown here. Chapter 5 | Electrical connections...
  • Page 23 Connect the shielded network cable to the display. AA2-X28 Route the network cable to the top of S1255. 3. Follow the flow meter’s cable out at the rear. AA2-X29 The example above uses the inputs AUX1 (AA2-X28:3) and AUX2 (AA2-X28:4).
  • Page 24 A selectable output is AA2-X27. Temperature sensor The output is a potential-free switching relay. Available options are: If S1255 is switched off or in emergency mode, the relay is • boiler (BT52) (only shown if shunt-controlled additional in C-NC position.

  • Page 25: Settings

    Closed or open switch means one of the following: – NOTE Blocking (A: Closed, B: Open) "SG Ready" is active. The compressor in S1255 and addi- The relevant distribution box must be marked with tional heat are blocked. a warning about external voltage.
  • Page 26 Move white cable from terminal block X7-2:N to terminal – block X9:L(2) on the base board (AA2). – – 3x400 V (maximum electrical power, – connected upon delivery 7 kW för S1255-12 / – 10.9 10.9 -16) 11.5 13.2 Max electric-...
  • Page 27 When the emergency mode is active, the status lamp turns yellow. To activate when S1255 is running: press and hold the on/off button (SF1) for 2 seconds and select "emergency mode" from the shutdown menu.

  • Page 28: Commissioning And Adjusting

    Check the brine system for leakage. NOTE Connect the filling pump and return line on the brine Do not start S1255 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 29: Start-Up And Inspection

    To set the correct flow in the brine system, the brine pump stallation’s basic settings. must run at the correct speed. S1255 has a brine pump that is controlled automatically in standard mode. Certain func- The start guide ensures that the start-up is carried out cor- tions and accessories may demand that it be run manually, rectly and, for this reason, cannot be skipped.
  • Page 30 To set the correct flow in the climate system, the heating Available pressure Output medium pump must run at the correct speed. S1255 has a heating medium pump that can be automatically controlled (kPa) in standard mode. Certain functions and accessories may...

  • Page 31: Setting The Cooling/Heating Curvesetting The Heating Curve

    Available pressure Output ature, regardless of the outdoor temperature, and thereby (kPa) energy-efficient operation. Based on these curves, S1255 determines the temperature of the water to the climate P100% system (the supply temperature) and thus the indoor tem- perature.
  • Page 32 Settings for "Own curve" are made in menu 1.30.7. TO READ OFF A HEATING CURVE Drag in the circle on the axis with outdoor temperature. Read off the value for supply temperature in the circle on the other axis. Chapter 6 | Commissioning and adjusting NIBE S1255...

  • Page 33: Myuplink

    Visit myuplink.com for more information. Specification You need the following in order for myUplink to be able to communicate with your S1255: • wireless network or network cable • Internet connection •...

  • Page 34: Control - Introduction

    For hard switch off: press and hold the on/off button for 5 seconds. To activate emergency mode when S1255 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 35: Navigation

    Navigation FACTORY SETTING Factory set values are marked with *. S1255 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 36 Current temperature The drop-down menu shows the current status for S1255, Set temperature what is in operation and what S1255 is doing at the moment. Works to set temperature The functions that are in operation are highlighted with a frame.

  • Page 37: Climate Systems And Zones

    This example shows a property with two climate systems Hot water (A and B) divided into four zones (1-4). Temperature and Info demand-controlled ventilation can be controlled individually for each zone (accessory required). My system Connection NIBE S1255 Chapter 8 | Control - Introduction...

  • Page 38: 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. Chapter 9 | Control - Menus NIBE S1255...
  • Page 39 MENU 1.3 - ROOM SENSOR SETTINGS temperature. It is from this heating curve that S1255 determ- Here, you make your settings for room sensors and zones. ines the temperature of the water to the climate system, The room sensors are grouped by zone.
  • Page 40 Set the minimum temperature on the supply temperature It is important that the correct heating curve is selected so to the climate system. This means that S1255 never calcu- that the room temperature is experienced as even. lates a temperature lower than that set here.

  • Page 41: Menu 2 - Hot Water

    The time can be set between to the right. 1 and 90 days. Tick/untick "Activated" to start/switch off When the time has run out, S1255 returns to the set demand the function. mode. MENU 2.5 - HOT WATER CIRCULATION Select "Off"...
  • Page 42 NOTE Hot water circulation is activated in menu 7.4 "Selectable in/outputs" or via accessory. Chapter 9 | Control - Menus NIBE S1255...

  • Page 43: Menu 3 - Info

    Setting range: 1 – 5 years Here, you can see a diagram showing how much energy S1255 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 44: Menu 4 - My System

    Alternative: Heating Operating mode "Add. heat only" The operating mode for S1255 is normally set to "Auto". It is In this operating mode the compressor is not active, only also possible to select operating mode "Add. heat only". Se- additional heat is used.
  • Page 45 With low price mode on "SG Ready", the stop temperature for the hot water is set as high as possible with compressor You can select whether you want S1255 to adjust the indoor operation only (immersion heater not permitted). climate based on the weather forecast here.
  • Page 46 Afterwards, it is not possible to change the country selected in this menu without first replacing components in the product. MENU 4.11 - TOOLS Here, you can find tools for use. Chapter 9 | Control - Menus NIBE S1255...

  • Page 47: 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 S1255 Chapter 9 | Control - Menus...

  • Page 48: 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 S1255...

  • Page 49: Menu 7 - Installer Settings

    2 Consult the accessory’s Installer Manual. MENU 7.1.1 - HOT WATER MENU 7.1 - OPERATING SETTINGS This menu contains advanced settings for hot water opera- Make operating settings for the system here. tion. NIBE S1255 Chapter 9 | Control - Menus...
  • Page 50 Auto: The heating medium pump runs according to the current operating mode for S1255. Maximum permitted speed: Here, you can restrict the pump speed to ensure that the heating medium pump is not al- Intermittent: The heating medium pump starts approx.
  • Page 51 Setting range S1255-6 3x400 V: 0 - 6.5 kW passive cooling is permitted. Setting range S1255-12 and -16 3x400 V: 0 - 9 kW MENU 7.1.2.8 - BRINE ALARM SETTING Max set electrical power (SG Ready) Setting range 3x400V: 0 –...
  • Page 52 Setting range: on/off difference additional heat can never exceed max difference compressor Select how you want the S1255 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 by the set value, the degree The different alternatives are that S1255 stops producing minute value is set to +1.
  • Page 53 Setting range: -25 – 40°C MENU 7.2.1 - ADD/REMOVE ACCESSORIES Filtering time Here, you tell S1255 which accessories are installed. Setting range: 0 – 48 h To identify connected accessories automatically, select "Search for accessories". It is also possible to select accessor- Stop heating, Stop additional heat: In this menu, you set the ies manually from the list.
  • Page 54 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, S1255 will be the main unit. If there is another main Symbol Description unit in the installation, you enter the ID that S1255 will have.
  • Page 55 Length period 1 – 7 MENU 7.5.8 - SCREEN LOCK Setting range: 0 – 30 days Here, you can choose to activate the screen lock for S1255. Temperature period 1 – 7 During activation, you will be asked to enter the required Setting range: 15 –...
  • Page 56 MENU 7.7 - START GUIDE When S1255 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. One of the following demands for the compressor must exist for quick start: •...

  • Page 57: Service

    When the emergency mode is active, the status lamp turns yellow. EP14-QM31 EP14-QM33 To activate when S1255 is running: press and hold the on/off EP14-QM34 EP14-QM32 button (SF1) for 2 seconds and select "emergency mode" from the shutdown menu.
  • Page 58 To let in air, slacken off the connection Draining the climate system in the heat pump slightly at the shut-off valve (EP14-QM33) that joins the If S1255 requires servicing, drain the climate system as fol- heat pump with the cooling module. lows:...
  • Page 59 HELPING THE CIRCULATION PUMP TO START Close the shut-off valves (EP14-QM31), (EP14-QM32), The circulation pump in S1255 has an automatic start help (EP14-QM33) and (EP14-QM34). function. If necessary the pump can be started manually. Drain the compressor module according to the instruc-...
  • Page 60 Menu 8.2 - Logging Setting range: 1 s – 60 min Here you can choose how current measurement values from S1255 should be saved onto a log file on the USB memory. Set the desired interval between loggings. Select “Start logging".
  • Page 61 Menu 8.3 - Manage settings Here you can manage (save as or retrieve from) all the menu The S-series can handle a maximum of 100 registers per settings (user and service menus) in S1255 with a USB second and 20 registers per query. memory.

  • Page 62: Disturbances In Comfort

    "Stop additional heat" function has occurred in menu 7.1.10.2 - "Auto mode setting". that S1255 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 63 Enter menu 4.1 - "Operating mode". If "Auto" mode is selected, select a higher value for "Stop heating" in – S1255 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 64: Accessories

    EME 20 is used to enable communication and control between in- verters for solar cells from NIBE and S1255. This accessory is used when S1255 is installed in houses with two or more different heating systems that require different supply Part no.
  • Page 65 ROOM UNIT RMU S40 The room unit is an accessory with a built-in room sensor, which allows the control and monitoring of S1255 to be carried out in a different part of your home to where it is located. Part no. 067 650...

  • Page 66: Technical Data

    Dimensions and setting-out coordinates * 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 S1255...

  • Page 67: Electrical Data

    Max operating current including 5 – 7 kW immersion heater (Recommended fuse rating). 21(25) Max operating current including 9 kW immersion heater, requires reconnection (Recommended fuse rating). 24(25) Additional power 1/2/3/4/5/6/7 (switchable to 2/4/6/9) NIBE S1255 Chapter 13 | Technical data...

  • Page 68: Technical Specifications

    1,774 Fill amount 1.16 equivalent 2.06 3.55 3.90 Cut-out value pressure switch HP / LP 3.2 (32) / 0.15 (1.5) (bar) Brine circuit Min/max system pressure brine 0.05 (0.5) / 0.45 (4.5) (bar) Chapter 13 | Technical data NIBE S1255...
  • Page 69 4 For 16 kW, the value is given at Delta T=4°, for others at Delta T=3° 5 With feet removed, the height is approx. 1,930 mm. 6 Cu: copper, Rf: stainless steel, E: enamel NIBE S1255 Chapter 13 | Technical data...
  • Page 70 Diagram for dimensioning a heat pump. The percentage at -5 °C incoming brine temperature. shows approximate compressor speed. The working range below 75 % for S1255-6 and the entire Arbetsområde under 75% för F1155-1255 6kW, Dimensionering kompr. hastighet för F1155-1255 -6 kW.
  • Page 71 Specified cooling output, kW 100% °C Köldbärare in, temperatur Incoming brine temp, °C Framledningstemp. Värmebärare 50 °C för F1155-1255 -12 kW 230V. S1255-12 230 V Avgiven kyleffekt Specified cooling output, kW 100% °C Köldbärare in, temperatur Incoming brine temp, °C Framledningstemp.
  • Page 72 Framledningstemp. Värmebärare 50 °C för F1155-1255 -16 kW. S1255-16 Avgiven kyleffekt Specified cooling output, kW 100% °C Köldbärare in, temperatur Incoming brine temp, °C Chapter 13 | Technical data NIBE S1255...

  • Page 73: Energy Labelling

    Energy labelling INFORMATION SHEET Supplier NIBE AB Model S1255-6 1x230V S1255-12 1x230V Temperature application °C 35 / 55 35 / 55 Declared load profile for water heating Seasonal space heating energy efficiency class, A+++ / A+++ A+++ / A+++ average climate...
  • Page 74 Supplier NIBE AB Model S1255-6 3x400V S1255-12 3x400V S1255-16 3x400V Temperature application °C 35 / 55 35 / 55 35 / 55 Declared load profile for water heating Seasonal space heating energy efficiency class, A+++ / A+++ A+++ / A+++...
  • Page 75 DATA FOR ENERGY EFFICIENCY OF THE PACKAGE Model S1255-6 1x230V S1255-12 1x230V Temperature application °C 35 / 55 35 / 55 Controller, class Controller, contribution to efficiency Seasonal space heating energy efficiency of the 204 / 154 205 / 161...
  • Page 76 Daily energy consumption 7.73 Daily fuel consumption elec fuel Annual energy consumption 1,642 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden Chapter 13 | Technical data NIBE S1255...
  • Page 77 Daily energy consumption 7.78 Daily fuel consumption elec fuel Annual energy consumption 1,709 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden NIBE S1255 Chapter 13 | Technical data...
  • Page 78 Daily energy consumption 7.48 Daily fuel consumption elec fuel Annual energy consumption 1,642 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden Chapter 13 | Technical data NIBE S1255...
  • Page 79 Daily energy consumption 7.78 Daily fuel consumption elec fuel Annual energy consumption 1,709 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden NIBE S1255 Chapter 13 | Technical data...
  • Page 80 Daily energy consumption 7.48 Daily fuel consumption elec fuel Annual energy consumption 1,642 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden Chapter 13 | Technical data NIBE S1255...
  • Page 81 Daily energy consumption 7.78 Daily fuel consumption elec fuel Annual energy consumption 1,709 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden NIBE S1255 Chapter 13 | Technical data...
  • Page 82 Daily energy consumption 7.78 Daily fuel consumption elec fuel Annual energy consumption 1,709 Annual fuel consumption Contact information NIBE Energy Systems – Box 14 – Hannabadsvägen 5 – 285 21 Markaryd – Sweden Chapter 13 | Technical data NIBE S1255...
  • Page 83 NIBE S1255 Chapter 13 | Technical data...

  • Page 84: Item Register

    Docking alternatives Installation alternative Free cooling, 17 Connecting hot water circulation, 17 Ground water system, 16 Water heater with immersion heater, 16 Pool, 17 Installation area, 6 Two or more climate systems, 17 Ventilation recovery, 17 Item register NIBE S1255...
  • Page 85 Removing the covers, 7 Room sensor, 21 Safety information Inspection of the installation, 5 Marking, 4 Serial number, 4 Symbols, 4 Serial number, 4 Service, 57 Service actions Draining the climate system, 57 Draining the hot water heater, 57 NIBE S1255 Item register...

  • Page 87: Contact Information

    Tel: +46 (0)433-27 3000 biawar.com.pl info@evan.ru info@nibe.se nibe-evan.ru nibe.se SWITZERLAND NIBE Wärmetechnik c/o ait Schweiz AG Industriepark, CH-6246 Altishofen Tel. +41 (0)58 252 21 00 info@nibe.ch nibe.ch For countries not mentioned in this list, contact NIBE Sweden or check nibe.eu for more information.
  • Page 88 WS release date: 2021-12-16 12:19 Publish date: 2022-03-01 10:09 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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