Geothermal heat pump S1156

residentialsplitwith water heater

Product overview
The NIBE S1156 is an intelligent, inverter-controlled ground source heat pump that uses a more climate-friendly refrigerant and does not include an integrated water heater. It adapts automatically to the building's heating demand to optimise energy use. The unit is designed for low noise operation, suitable for new buildings and as a replacement for existing heat sources, and includes integrated Wi‑Fi and support for wireless accessories for smartphone/tablet control via myUplink.

Key features

• Inverter-controlled ground source heat pump
• Uses a new, more climate-friendly refrigerant
• No integrated water heater; connects to a separate water heater of any size
• Adaptive control that optimises savings by adjusting to the home's heating requirements
• Seasonal performance factor (SCOP) up to 6.22* (S1156-18, cold climate 35 °C, per EN 14825)
• Available output sizes: 1.5–8 kW, 3–13 kW and 4–18 kW
• Designed for houses up to approx. 400 m²
• Low noise design; Quiet Mark certified
• Integrated Wi‑Fi, touchscreen and support for wireless accessories; smartphone/tablet control via myUplink

Advantages

• High customisation – Energy-efficient operation with SCOP up to 6.22.
• Top performance – Climate-friendlier refrigerant, high hot water capacity when connected to an external water heater, and low sound levels.
• High comfort – User-friendly touchscreen, wireless accessories and integrated connectivity with energy-saving smart functions.

Accessories

• NIBE PCM S40
• NIBE TOC 30 Top cabinet 345 mm
• NIBE ROT 10 (wireless room thermostat)
• NIBE ELK 26 (back-up electric immersion heater - 26 kW)
• NIBE KB 25 (filling connection for brine, incl. insulation, for heat pumps max. 13 kW)
• NIBE ELK 42 (back-up electric immersion heater - 42 kW)
• NIBE RPP 10 (repeater)
• NIBE PCM S42
• NIBE TOC 30 Top Cabinet 385-635 mm
• NIBE TOC 30 Top cabinet 245 mm
• NIBE HPAC S40
• NIBE ERS 30-400 (heat recovery ventilation unit)
• NIBE THS 10 (wireless temperature & humidity sensor)
• NIBE SRV 10 (wireless radiator thermostat)
• NIBE FLM S45 (exhaust air module)
• NIBE ELK 15 (three phase back-up electric immersion heater - 15 kW)
• NIBE CDS 10 (CO2, temperature & humidity sensor)
• NIBE EF 45 (extension frame)
• NIBE SOLAR 42
• NIBE BAU 40 (wall console)
• NIBE ACS 45 (4-pipe passive/active cooling accessory)
• NIBE SOLAR 40
• NIBE PCS 44 (passive cooling)
• NIBE PV (integrated solar package)
• NIBE RMU S40 (room unit with 2.8" touch display)
• NIBE POOL 40 (pool heating accessory)
• NIBE AXC 40 (accessory card)
• NIBE EME 20 (communication module)
• NIBE HR 10 (auxiliary relay)
• NIBE HTS 40 (humidity and temperature recorder)
• NIBE ECS 40
• NIBE ECS 41

Available documents (examples)

• User manual (UHB)
• Installer manual (IHB)
• Product leaflet (PBD)
• Product catalogue – Ground source heat pumps
• Energy Labels for S1156 variants
• Wiring diagram (WHB)

Technical specifications

• Height: 1500 mm
• Width: 600 mm
• Depth: 620 mm
• Net weight: 165 kg
• Product efficiency class room heating, 35 °C: A+++
• Product efficiency class room heating, 55 °C: A+++
• System efficiency class room heating, 55 °C: A+++
• System efficiency class room heating, 35 °C: A+++
• Efficiency class water heating: A+
• Refrigerant amount, CO2 equivalent: 0.54 t
• Declared tap profile: XL
• Available output sizes (models): 1.5–8 kW, 3–13 kW, 4–18 kW
• Recommended installation area: houses up to approx. 400 m²
• Certifications/recognition: Quiet Mark certified (low sound levels)