S1156-8 EM - Heat pump Nibe - Free user manual and instructions
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| Product Type | Ground source heat pump with integrated domestic hot water tank |
| Brand | Nibe |
| Model | S1156-8 EM |
| Heating Capacity | Approximately 8 kW at 0/35°C |
| Power Supply | 400V 3-phase, 50Hz |
| Integrated Electric Heater | Up to 9 kW for supplementary heating |
| Hot Water Tank Capacity | Approximately 180 liters |
| Refrigerant | R407C |
| COP Value | Up to 4.5 at 0/35°C |
| Sound Level | Approximately 45 dB(A) from the unit |
| Flow Line Temperature | Maximum 65°C |
| Dimensions (H×W×D) | 1500 × 600 × 620 mm |
| Weight | 285 kg |
| Main Functions | Heating, domestic hot water generation, passive cooling |
| Control System | Built-in NIBE control unit with smart connectivity |
| Maintenance | Clean outdoor air filter and inspect the safety valve periodically |
| Cleaning | Wipe surfaces with a damp cloth; avoid abrasive solvents |
| Safety Features | Overheating protection, pressure relief valve, safety thermostat |
| Spare Parts | OEM spare parts available through NIBE authorized service centers |
| Repairability | Modular design for easier service and component replacement |
| General Information | Free user manual and installation guide available on notice-facile.com |
Frequently Asked Questions - S1156-8 EM Nibe
What is the Nibe S1156-8 EM heat pump?
The Nibe S1156-8 EM is a ground source heat pump with an integrated domestic hot water tank. It extracts heat from the ground using a borehole or surface collector, upgrades it with a compressor, and delivers it to your central heating system and hot water supply. The model '8' indicates a nominal output of approximately 8 kW, suitable for well-insulated family homes.
Can the S1156-8 EM provide cooling in summer?
Yes, it features a passive cooling function. By reversing the heat exchanger circuit, excess heat in the house is transferred back to the ground loop, effectively providing a low-energy cooling system. This option is especially useful in warmer climates.
What are the recommended installation requirements?
The unit should be installed in a dry, frost-free indoor area such as a utility room, with a solid and level foundation. Ensure sufficient space for service access: at least 500 mm on the sides and 300 mm above. The ground collector must be designed based on the heat demand and local geological conditions.
How often does the heat pump require maintenance?
Regular maintenance is essential for performance. The anti-frost system and safety valves should be checked annually. The external air filter should be cleaned every 2 to 3 months. A certified engineer should perform a full service check every year, including refrigerant pressure and electrical connections.
What should I do if an alarm appears on the display?
First, note the alarm code shown on the control panel. Use the manual's troubleshooting section to identify the cause. Many alarms can be reset by pressing the reset button, but persistent alarms (e.g., low brine pressure or high steam pressure) require professional assistance. If you are unsure, contact NIBE technical support.
Is the S1156-8 EM suitable for underfloor heating?
Absolutely. The heat pump produces low-temperature water (up to 65°C), which is ideal for underfloor heating systems. Its high coefficient of performance (COP) is maximized when the heating supply temperature is low, typically between 35°C and 45°C.
Can I integrate a solar thermal system?
Yes, the S1156-8 EM can be connected to a solar thermal collector for additional domestic hot water support. This integration allows the solar loop to heat the top part of the integrated hot water tank, reducing the workload on the heat pump and improving overall efficiency.
What electrical connection does the unit require?
The S1156-8 EM is designed for a 400V 3-phase supply. It must be connected by an authorized electrician. The unit has a maximum electrical power draw of around 9 kW when the backup heater is activated. A dedicated circuit and a residual current circuit breaker are mandatory.
How long is the warranty on this heat pump?
NIBE offers a standard 2-year warranty on the entire product, and an extended warranty for the compressor (often up to 5 years) when installed by a certified NIBE partner. Conditions apply; you need to register the product after installation.
Where can I find the complete user manual?
The complete user manual for the S1156-8 EM is available for free on notice-facile.com. You can download it as a PDF in English and other languages. The manual includes detailed installation, operation, and maintenance instructions.
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USER MANUAL S1156-8 EM Nibe
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Product information
Brand : Nibe
Model : S1156-8 EM
Category : Heat pump