Nibe F1255 Installation Manual
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Nibe F1255 Installation Manual

Ground source heat pump
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IHB EN 2008-5
331335
Ground source heat pump
NIBE F1255
INSTALLATION MANUAL
UK 1x230V

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Summary of Contents for Nibe F1255

  • Page 1 IHB EN 2008-5 INSTALLATION MANUAL 331335 Ground source heat pump NIBE F1255 UK 1x230V...
  • Page 2 Quick guide Navigation Ok button (confirm/select) Back button (back/undo/exit) Control knob (move/increase/reduce) A detailed explanation of the button functions can be found on page How to scroll through menus and make different settings is described on page Set the indoor climate INDOOR CLIMATE HOT WATER HEAT PUMP...

  • Page 3: Table Of Contents

    Dimensions and setting-out coordinates Heating medium side Electrical data Cold and hot water Technical specifications Docking alternatives Energy labelling 5 Electrical connections Item register General Connections Contact information Settings Optional connections Connecting accessories 6 Commissioning and adjusting Preparations NIBE F1255 Table of Contents...

  • Page 4: Important Information

    The overflow pipe must be visible and its mouth must be open and not located close to electrical components. F1255 must be installed via an isolator switch. The cable area has to be dimensioned based on the fuse rating used.

  • Page 5: Serial Number

    This unit contains a fluorinated greenhouse gas that is covered by the Kyoto agreement. The equipment contains R407C, a fluorinated green- house gas with a GWP value (Global Warming Potential) of 1,774. Do not release R407C into the atmosphere. NIBE F1255 Chapter 1 | Important information...

  • Page 6: Country Specific Information

    Scheme. Visit centralheating.co.uk information. Warranty and insurance information Thank you for installing a new NIBE heat pump in your home. NIBE heat pumps are manufactured in Sweden to the very highest standard so we are pleased to offer our customers a comprehensive guarantee.

  • Page 7: Inspection Of The Installation

    Shut off valves Circulation pump setting Electricity (page Connections Main voltage Phase voltage Fuses heat pump Fuses property Outside sensor Room sensor Safety breaker Earth circuit-breaker Setting of emergency mode thermostat Miscellaneous Warranty Benchmark checklist NIBE F1255 Chapter 1 | Important information...

  • Page 8: Delivery And Handling

    Approx. 50 mm free space is required on each side, to remove the side panels (see image). The panels do not need to be removed during service. All service on F1255 can be carried out from the front. Leave space between...

  • Page 9: Supplied Components

    (FL1) tem ((QM11) and (QM13)) Tundish (WM3) Pipe and plug, 22 mm LOCATION The kit of supplied items is placed in packaging on top of the heat pump. NIBE F1255 Chapter 2 | Delivery and handling...

  • Page 10: Removing Parts Of The Insulation

    Grip the handle and pull the insulation carefully to- wards you as illustrated. Grip the handle and pull straight out as illustrated. Chapter 2 | Delivery and handling NIBE F1255...

  • Page 11: The Heat Pump Design

    3 The heat pump design VIEW FROM ABOVE General QM22 W130 QN10 AA4-XJ4 AA4-XJ3 QM34 QM31 QM33 QM32 EP14 NIBE F1255 Chapter 3 | The heat pump design...
  • Page 12 * Not illustrated ELECTRICAL COMPONENTS Display unit AA4-XJ3 USB socket AA4-XJ4 Service outlet (No function) Immersion heater Switch W130 Network cable for NIBE Uplink MISCELLANEOUS EP14 Cooling section Rating plate Type plate, cooling section Cable gland, incoming electricity Cable gland Cable gland, rear side, sensor Designations according to standard EN 81346-2.

  • Page 13: Distribution Boxes

    Distribution boxes FQ10 FQ11 AA23 ELECTRICAL COMPONENTS Immersion heater card Base card Input circuit board AA23 Communication board Miniature circuit-breaker FQ10 Temperature limiter/Emergency mode thermostat FQ11 Temperature limiter, compressor NIBE F1255 Chapter 3 | The heat pump design...

  • Page 14: Cooling Section (Ep14)

    Cooling section (EP14) 6 kW BT14 GQ10 QA40 BT12 BT10 BT17 XL20 AA100 BT15 XL21 BT11 EB10 12 kW 12 kW QA40 BT14 BT17 GQ10 BT12 BT10 XL21 AA100 XL20 BT15 BT11 EB10 Chapter 3 | The heat pump design NIBE F1255...
  • Page 15 Temperature sensor, fluid pipe BT17 Temperature sensor, suction gas ELECTRICAL COMPONENTS AA100 Joint card Capacitor EB10 Compressor heater QA40 Inverter Choke COOLING COMPONENTS Evaporator Condenser GQ10 Compressor Drying filter Expansion valve NIBE F1255 Chapter 3 | The heat pump design...

  • Page 16: Pipe Connections General

    F1255 is not equipped with external shut off valves; The mouth of the overflow pipe must be visible and not these must be installed to facilitate any future servicing.
  • Page 17 27 m 1.7 mm 28 mm 35 mm up to 9 m 1.4 mm 28 mm 42 mm up to 18 m 1.7 mm 28 mm 54 mm up to 27 m 2.3 mm NIBE F1255 Chapter 4 | Pipe connections...
  • Page 18 SYMBOL KEY There should not normally be any problem installing SYSTEM DIAGRAM F1255 in hard water areas, as the operating temperature F1255 consists of a heat pump, water heater, electrical is 50-60°C. module, circulation pumps and a control system. F1255 CLEANING THE CLIMATE SYSTEM is connected to the brine and heating medium circuits.

  • Page 19: Dimensions And Pipe Connections

    Connection is added. (XL1)/(XL2) Heating medium (mm) NIBE Energy Systems Limited recommends water flow/return ext. Ø treatments (supplied by e.g. Fernox and Sentinel) spe- cifically designed for heat pumps. (XL3)/(XL4) Cold/hot water Ø...

  • Page 20: Heating Medium Side

    A climate system is a system that regulates indoor • Stop temperature for hot water must be at least 60°C. comfort with the help of the control system in F1255 • A mixing valve must be installed when the factory and for example radiators, underfloor heating/cooling, setting for hot water is changed.
  • Page 21 The installation can be supplemented with the exhaust cessory used. See page 67 for a list of accessories that air module NIBE FLM to provide ventilation recovery. can be used with F1255. • Pipes and other cold surfaces must be insulated with BUFFER VESSEL diffusion-proof material to prevent condensation.
  • Page 22 -EP21-RM1 POOL With the POOL 40 accessory, you can heat the pool with your heat pump. During pool heating, the heating medium circulates between the F1255 and the pool exchanger using the heat pump’s internal circulation pump. -CL11 -CL11-AA25 -CL11-QN19...

  • Page 23: Electrical Connections

    50 m, for example EKKX or LiYY or equivalent. to the soft-start, if the temperature rises above 88°C, • When cable routing in F1255, cable grommets (e.g. and it is reset manually. UB1-UB3, marked in image) must be used. In...
  • Page 24 To remove the cover for the base board, the Removing the cover, input circuit board cover for the input circuit board must first be removed. Push the catch down. Angle out the cover and remove it. Chapter 5 | Electrical connections NIBE F1255...

  • Page 25: Connections

    POWER CONNECTION F1255 must be installed with a disconnection option on the supply cable. Minimum cable area must be sized according to the fuse rating used. Enclosed cable for incoming supply electricity is connected to terminal block X1 on the immersion heater board (AA1).

  • Page 26: Settings

    The heat pump operates without the sensor, but if one wishes to read off the accommodation's indoor temper- Connect the sensor(s) to ature in F1255's display, the sensor must be installed. terminal X6 on input Connect the room sensor to X6:3 and X6:4 on the input board(AA3) according to the board (AA3).

  • Page 27: Optional Connections

    X4:13 (GND) on the input card (AA3). NOTE Use cable type LiYY, EKKX or similar. The switch (SF1) must not be moved to "" or The example shows the connection of several F1255 . " " until F1255 has been filled with water. EB100 - Master Components in the product can be damaged.
  • Page 28 Some of the following functions can also be activated and scheduled via menu settings. POSSIBLE SELECTION FOR AUX INPUTS Temperature sensor Temperature sensor can be connected to F1255. Available options are: • external supply line (BT25) (control of temperature to EXTERNAL CONNECTION OPTIONS...
  • Page 29 External activation of functions Caution An external switch function can be connected to F1255 In systems with both underfloor heating and to activate various functions. The function is activated radiators, NIBE ECS 40/41 should be used during the time the switch is closed.

  • Page 30: Connecting Accessories

    67). See information at nibe.co.uk for the list of the accessor- ies that can be used with F1255. ACCESSORIES WITH CIRCUIT BOARD AA5 Accessories that contain circuit board AA5 are connected to the heat pump terminal block AA3-X4: 13-15. Use 1 2 3 cable type LiYY, EKKX or similar.
  • Page 31 Because there can be different connections for accessor- ies with circuit boards AA9, you should always read the instructions in the manual for the accessory that you are going to install. AA3-X4 AA3-X4 F1255 Accessories AA9-X1 12V A B GND NIBE F1255 Chapter 5 | Electrical connections...

  • Page 32: Commissioning And Adjusting Preparations

    They may have filling hose (WN1). tripped during transportation. QM13 NOTE Do not start F1255 if there is a risk that the QM11 water in the system has frozen. NOTE Venting At the time of commissioning, complete all...

  • Page 33: Start-Up And Inspection

    Check the brine system for leakage. If the building is cooled when F1255 starts, the com- pressor may not be able to meet the entire demand Connect the filling pump and return line on the brine without having to use additional heating.
  • Page 34 To set the correct flow in the brine system, the brine Tillgängligt tryck, kPa Flöde l/s Available pressure, kPa pump must run at the correct speed. F1255 has a brine Electrical output, W Eleffekt, W pump that is controlled automatically in standard mode.

  • Page 35: Setting The Heating Curve

    Based on set minimum value the heating curve flattens out at this curve, the F1255 determines the temperature of these temperatures. the water to the climate system (the supply temperat- ure) and thus the indoor temperature.
  • Page 36 You can now select to take read outs for different outdoor temperatures by turning the control knob to the right or left and read off the corresponding flow temperature. Press the OK or Back button to exit read off mode. Chapter 6 | Commissioning and adjusting NIBE F1255...
  • Page 37 2 Under floor heating can be dimensioned very differently. The above example refers to a system where the supply temperature needs to be approximately 35 – 40 °C or 45 – 50 °C on the coldest day. NIBE F1255 Chapter 6 | Commissioning and adjusting...

  • Page 38: Control - Introduction

    • confirm selections of sub menus/options/set values/page in the start guide. BACK BUTTON The back button is used to: • go back to the previous menu. • change a setting that has not been confirmed. Chapter 7 | Control - Introduction NIBE F1255...

  • Page 39: Menu System

    Display of temperature and other operating information and access to the alarm log. See information in the help menu or user manual. This menu is also set in the slave heat pump's limited menu system. NIBE F1255 Chapter 7 | Control - Introduction...
  • Page 40 3.1 that you should note. These two symbols indicate whether the compressor or addition is blocked in F1255. These can, for example, be blocked depend- ing on which operating mode is selected in menu 4.2, if blocking is scheduled in menu 4.9.5 or if an alarm has occurred that blocks...
  • Page 41 Back button. Mark the applicable option. One of the options is pre-selected (white). Press the OK button to confirm the selected option. The selected option has a green tick. NIBE F1255 Chapter 7 | Control - Introduction...
  • Page 42 (at the page number) has been marked. Press the OK button to skip between the steps in the start guide. If the start guide is left on this page it closes automatically in 60 min Chapter 7 | Control - Introduction NIBE F1255...

  • Page 43: Control - Menus

    Menu 2 - HOT WATER 2 - HOT WATER, ** 2.1 - temporary lux 2.2 - comfort mode 2.3 - scheduling 2.9 - advanced 2.9.1 - periodic increase 2.9.2 - hot water recirc. NIBE F1255 Chapter 8 | Control - Menus...

  • Page 44: Menu 3 - Info

    Menu 4 - HEAT PUMP 4 - HEAT PUMP 4.1 - plus functions 4.1.1 - pool * 4.1.3 - internet 4.1.3.1 - NIBE Uplink 4.1.3.8 - tcp/ip settings 4.1.3.9 - proxy settings 4.1.4 - sms * 4.1.5 - SG Ready 4.1.7 - smart home...

  • Page 45: Menu 5 - Service

    Manual start of the start guide which is run operating settings Operating settings for the heat the first time the heat pump is started. pump. quick start Quick starting the compressor. NIBE F1255 Chapter 8 | Control - Menus...
  • Page 46 The different alternatives are that the heat pump stops producing hot water (default setting) and/or reduces the room temperature. Chapter 8 | Control - Menus NIBE F1255...
  • Page 47 10 days continuous: Continuous operation for 10 days. the speed of the brine pump is to be regulated automat- The pump then shifts to intermittent operation. ically (factory setting) for optimal operation. NIBE F1255 Chapter 8 | Control - Menus...
  • Page 48 The heating medium pump runs according to the operate in the present operating mode. Select "auto" if current operating mode for F1255. the speed of the heating medium pump is to be regu- lated automatically (factory setting) for optimal operation.
  • Page 49 17 – 115 Hz Here you set the max. electrical output of the internal stop: 22 – 120 Hz electrical addition in F1255 and the fuse size for the in- Maximum setting range: 50 Hz. stallation. MENU 5.1.14 - FLOW SET. CLIMATE SYSTEM Here you can set a frequency range where the com- pressor is blocked.
  • Page 50 You can either mark the alternative in the list or use the automatic function "search installed acc.". search installed acc. Mark “search installed acc." and press the OK button to automatically find connected accessories for F1255. Caution Compressor Marking frame...
  • Page 51 MENU 5.3.3 - EXTRA CLIMATE SYSTEM system. use in heating mode Setting range: on/off See the accessory installation instructions for function description. Factory setting: on use in cooling mode Setting range: on/off Factory setting: off NIBE F1255 Chapter 8 | Control - Menus...
  • Page 52 Contr. pump GP10: Here, you can set the speed of the Factory setting: 40 °C circulation pump manually. active recharging - deactivating dT See the accessory installation instructions for function Setting range: 4 – 50 °C description. Factory setting: 20 °C Chapter 8 | Control - Menus NIBE F1255...
  • Page 53 Setting range: 10 – 300 s See the accessory installation instructions for function Default values: 30 s description. Make settings for the hot water comfort here. See the accessory installation instructions for function description. NIBE F1255 Chapter 8 | Control - Menus...
  • Page 54 Activated if mixer valve is installed and it is to be controlled from F1255. When the option is active, you can set the outgoing hot water See the installation instructions for ERS and temperature, shunt amplification and shunt waiting time HTS for a function description.
  • Page 55 Here you set the number of pulses per kWh that are sent to F1255. Energy meter (Electricity meter) The energy meter(s) is used to send pulse signals every time a certain amount of energy has been consumed.
  • Page 56 See section "Logging floor drying" on page 62. MENU 5.10 - CHANGE LOG Read off any previous changes to the control system here. Chapter 8 | Control - Menus NIBE F1255...

  • Page 57: Service

    Hot water start and stop temperature. Maintenance may only be carried out by per- Pressure controlled bypass valve. sons with the necessary expertise. T&P valve. When replacing components on F1255 only replacement parts from NIBE may be used. Overflow pipe. Pressure expansion vessel. NOTE Expansion relief valve.

  • Page 58: Service Actions

    NIBE may be used. EMERGENCY MODE NOTE FQ10 The switch (SF1) must not be moved to "" or " " until F1255 has been filled with water. Component parts in the product can be dam- QM34 aged. QM33 QM31...
  • Page 59 HELPING THE CIRCULATION PUMP TO START Turn off F1255 by setting the switch (SF1) to " ". Remove the front cover Remove the cover for the cooling module. Loosen the venting screw (QM5) with a screwdriver.
  • Page 60 It is usually easier to start the circulation pump with PULLING OUT THE COOLING MODULE F1255 running, and with the switch (SF1) set to "". If the The cooling module can be pulled out for service and circulation pump is helped to start while F1255 is run- transport.
  • Page 61 Disconnect the switch (D) from the joint board (AA100). Carefully pull out the cooling module. The display unit is equipped with a USB socket that can be used to update the software and save logged inform- ation in F1255. INDOOR CLIMATE HOT WATER HEAT PUMP INFO USB 7 The cooling module is installed in reverse order.
  • Page 62 Here you can choose how current measurement values date starts and you can now follow the progress of the from F1255 should be saved onto a log file on the USB update on the display. When the update is complete memory.
  • Page 63 Here you can manage (save as or retrieve from) all the menu settings (user and service menus) in F1255 with a USB memory. Via "save settings" you save the menu settings to the USB memory in order to restore them later or to copy the settings to another F1255.

  • Page 64: Disturbances In Comfort

    10 Disturbances in comfort In most cases, F1255 notes a malfunction (a malfunction aid mode “aid mode” is a type of emergency mode. can lead to disruption in comfort) and indicates this with This means that the heat pump produces heat and/or alarms, and instructions for action, in the display.
  • Page 65 – Enter menu 4.2. If mode "auto" is selected, select a – F1255 does not call on heating, cooling or hot water. higher value on "stop heating" in menu 4.9.2. • Compressor blocked due to the temperature condi- –...
  • Page 66 – Adjust the flow distribution between the radiators. GURGLING SOUND This part of the troubleshooting chapter only applies if the NIBE FLM accessory is installed. • Not enough water in the water seal. – Refill the water seal with water.

  • Page 67: Accessories

    The accessory HPAC 40 is a climate exchange module MODBUS 40 enables F1255 to be controlled and mon- that is to be included in a system with F1255. itored using a DUC (computer sub-centre) in the building. Communication is then performed using MODBUS-RTU.
  • Page 68 Part no 067 287 Part no 067 288 The room unit is an accessory that allows the control and monitoring of F1255 to be carried out in a different part of FILLING VALVE KIT KB 32 your home to where it is located.

  • Page 69: 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. NIBE F1255 Chapter 12 | Technical data...

  • Page 70: Electrical Data

    Max operating current including 0 – 1 kW immersion heater (Recommended fuse rating). 26(32) Max operating current including 2 – 4 kW immersion heater (Recommended fuse rating). 39(40) Max operating current including 5 – 7 kW immersion heater (Recommended fuse rating). 52(63) Additional power 1/2/3/4/5/6/7 Chapter 12 | Technical data NIBE F1255...

  • Page 71: Technical Specifications

    Technical specifications 1X230V F1255– 6 F1255– 12 Output data according to EN 14511:2011 Heating capacity (P 1.5 – 6 3 – 12 0/35 nominal Rated output (P 3.15 5.06 Supplied power (P 0.67 1.04 4.72 4.87 0/45 nominal Rated output (P 2.87...
  • Page 72 Scale for the system’s efficiency class room heating: A+++ to G. Reported efficiency for the system takes the product’s temperature regulator into account. Scale for efficiency class hot water: A+ to F. With feet removed the height is approx. 1930 mm for F1255. MISCELLANEOUS Type...
  • Page 73 (up to 70°C) is obtained using the additional heat. This diagram shows the working range below 75 % for Arbetsområde under 75% för F1155-1255 6kW, för hela arbetsområdet 12 och 16 kW. F1255-6 and the entire working range for F1255-12. Vattentemperatur Vattentemperatur Temperature, °C (°C)
  • Page 74 °C Köldbärare in, temperatur Incoming brine temp, °C Framledningstemp. Värmebärare 50 °C för F1155-1255 -12 kW 230V. F1255-12 Avgiven kyleffekt Specified cooling output, kW 100% °C Köldbärare in, temperatur Incoming brine temp, °C Chapter 12 | Technical data NIBE F1255...

  • Page 75: Energy Labelling

    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. NIBE F1255 Chapter 12 | Technical data...
  • 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 12 | Technical data NIBE F1255...
  • 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 F1255 Chapter 12 | Technical data...

  • Page 78: Item Register

    Country specific information, 6 General, 23 Master/Slave, 27 Data for energy efficiency of the system, 75 Miniature circuit-breaker, 23 Delivery and handling, 8 NIBE Uplink, 28 Assembly, 8 Optional connections, 27 Drawing out the cooling module, 8 Outdoor sensor, 26 Installation area, 8...
  • Page 79 Room sensor, 26 Settings, 26 NIBE Uplink, 28 Standby mode, 27 Temperature limiter, 23 OK button, 38 Temperature limiter, compressor, 23 Operation, 41 Temperature sensor, external flow line, 26 Optional connections, 27 Emptying the brine system, 59 Outdoor sensor, 26...
  • Page 80 Component location cooling section, 14 Component location electrical cabinets, 13 Component locations, 11 List of components, 11 Transport, 8 Troubleshooting, 64 USB service outlet, 61 Use the virtual keyboard, 42 Warranty information, 6 Working range heat pump, 73 Item register NIBE F1255...
  • Page 81 GROUND SOURCE HEAT PUMP COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the heat pump and associated equipment as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights Customer Name Address...
  • Page 82 MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.
  • Page 83 Service Record It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.
  • Page 88 WS release date: 2020-03-02 10:13 Publish date: 2020-04-14 11:51 This manual 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 manual.

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