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NIBE S1256 - Ground to water heat pump

Verified by manufacturer 4 months ago

S1256-8

NIBE Energy Systems Ltd Variant:
Product certifications:
  • Quiet Mark Certification

    Quiet Mark Certification

    Certificate type

High efficiency, intelligent and powerful inverter controlled ground source heat pump in two output sizes.

Jump to:
0330 311 2201 Website

Application

Indoor ground source heat pump unit with integrated Dhw cylinder. Particularly suitable for residential properties up to 4 bedrooms.

Description

NIBE S1256 is an intelligent and powerful inverter controlled ground source heat pump in two sizes. It provides optimum savings as the heat pump performs efficiently and automatically adapts to the property’s output requirements all year round.

It has a high seasonal coefficient of performance and an operating range of 1.5-13kW. With just over 0.5 tonnes CO2 equivalent refrigerant volume. The modulating compressor provides efficient output regulation and high reliability, making the heat pump suitable for most properties even with larger heating requirements.

A 173 litre Dhw tank is integral to the heat pump and is capable of producing up to 275l of hot water @40 degrees as per EN 16147. This positions the heat pump perfectly for installing in properties with up to 4 bedrooms.

Thanks to smart technology and an intuitive touch screen controller, the heat pump gives the user full control over energy consumption and the Intelligent controller automatically adjusts the indoor climate for maximum comfort & efficiency.

The S1256-8 PC variant of this product comes with all passive cooling accessories pre-built into the heat pump unit.

Features and benefits:

  • Output sizes: 8 and 13 kW.
  • Compact footprint with Integrated 173l hot water cylinder
  • Highly efficient inverter controlled ground source heat pump in two sizes.
  • Efficient output regulation and high reliability for lower running costs.
  • Smart technology with user-friendly control for easy remote control.
  • myUplink Smart app control capability
  • Integrated underfloor drying function.
  • Clear and easy to use touch screen controller.
  • A wide range of system solutions and accessories.
  • 1950 mm required ceiling height.
  • Constructed on a robust frame with durable panels and high quality soundproofing for the best possible comfort. All panels are easy to remove to facilitate installation and for any servicing.

General information

Color

Silver

Grey

White

Finish

Powder-coated

Material

Aluminium

Steel

Brass

Copper

Stainless steel

Show more

Shape

Rectangle

Length

620 mm

Width

600 mm

Height

1800 mm

Warranty description

Two year

Seven year

Uniclass

Pr_70_60_37_36 Ground source heat pumpsPrimary

CAWS

T90/525 Ground heat exchangers

SKU Code

S1256-8, S1256-13

Specification data - Ground source heat pumps

Classification data

Collector material

Black PE 100 to BS EN 12201-1, BS EN 12201-2, BS EN 12201-3, BS EN 12201-4 and BS EN 12201-5.
Grey/ white PE-Xa to BS EN ISO 15875-1, BS EN ISO 15875-2, BS EN ISO 15875-3 and BS EN ISO 15875-5.

Loop depth

-

Manufacturer guidance

Minimum 1m. Insert Requirements.

Pipe diameter

22 mm and 28 mm.

Guidance for specification option:

22 mm – hot/ cold water connection pipe and heating medium CU pipes.

28 mm – brine CU pipe.

Borehole diameter

-

Manufacturer guidance

Insert requirements.

Temperature

Return temperature up to 58 °C and outgoing temperature of 70 °C.

Guidance for specification option:

Outgoing temperature of 65 °C with only the compressor.

Accessories:

Active/passive cooling in 4-pipe system ACS 45.

Guidance for specification option:

Part no 067 195.

Active/pasive cooling HPAC S40.

Guidance for specification option:

The accessory HPAC S40 is a climate exchange module that is to be included in a system with S1256.

Part no. 067 624.

Docking Kit PTV 40.

Guidance for specification option:

PVT 40 enables S1256 to use PVT-panels as brine-source.

Part no. 057 245.

External electric additional heat ELK.

Guidance for specification option:

These accessories require accessories cardAXC40 (step controlled addition).

  • ELK 5: Electric heater; 5 kW, 1 x 230 V; Part no. 069 025.
  • ELK 8: Electric heater; 8 kW, 1 x 230 V; Part no. 069 026.
  • ELK 15: 15 kW, 3 x 400 V; Part no. 069 022.
  • ELK 213: 7–13 kW, 3 x 400 V; Part no. 069 500.

Extra shunt group ECS.

Guidance for specification option:

This accessory is used when S1256 is installed in houses with two or more different heating systems that require different supply temperatures.

  • ECS 40 (Max 80 m²): Part no 067 287.
  • ECS 41 (approx. 80-250 m²): Part no 067 288.

Free cooling PCS 44.

Guidance for specification option:

This accessory is used when S1256 is installed in an installation with passive cooling.

Part no 067 296.

Humidity sensor HTS 40.

Guidance for specification option:

This accessory is used to show and regulate humidity and temperatures during both heating and cooling operation.

Part no. 067 538.

Exhaust air module FLM S45.

Guidance for specification option:

FLM S45 is an exhaust air module designed to combine recovery of mechanical exhaust air with ground source heating.

  • FLM S45: Part no. 067 627.
  • Bracket BAU 40: Part no. 067 666.

HRV unit ERS.

Guidance for specification option:

This accessory is used to supply the accommodation with energy that has been recovered from the ventilation air. The unit ventilates the house and heats the supply air as necessary.

  • ERS S10-400: Part no. 066 163.
  • ERS 20-2501: Part no. 066 068.
  • ERS 30-4001: Part no. 066 165.

Base extension EF 45.

Guidance for specification option:

This accessory can be used to create a larger area under S1256.

Part no. 067 152.

Auxiliary relay HR 10.

Guidance for specification option:

Auxiliary relay HR 10 is used to control external 1 to 3 phase loads such as oil burners, immersion heaters and pumps.

Part no 067 309.

Communication module for solar electricity EME 20.

Guidance for specification option:

EME 20 is used to enable communication and control between inverters for solar cells from NIBE and S1256.

Part no. 057 215.

Passive cooling PCM S40/S42.

Guidance for specification option:

PCM S40/42 makes it possible to obtain passive cooling from rock, groundwater or surface soil collectors.

Part no. 067 625 / 067 626.

Pool heating POOL 40.

Guidance for specification option:

POOL 40 is used to enable pool heating with S1256.

Part no 067 062.

Pilling valve kit, brine 25/32.

Guidance for specification option:

Valve kit for filling brine in the collector hose. Includes particle filter and insulation.

  • KB 32 (max. 30 kW) Part no. 089 971.
  • KB 25 (max 13 kW) Part no. 089 368.

Room unit RMU S40.

Guidance for specification option:

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.

Solar package NIBE PV.

Guidance for specification option:

NIBE PV is a modular system comprising solar panels, assembly parts and inverters, which is used to produce your own electricity.

Accessory card AXC 40.

Guidance for specification option:

This accessory is used to enable connection and control of shunt controlled additional heat, step controlled additional heat, external circulation pump or ground water pump.

Part no. 067 060.

Wireless accessories.

Guidance for specification option:

It is possible to connect wireless accessories to S1256, e.g. room, humidity, CO2 sensors.

Top cabinet TOC 30.

Guidance for specification option:

Top cabinet, which conceals any pipes/ventilation ducts.

  • Height 345 mm Part no. 067 518.
  • Height 245 mm Part no. 067 517.
  • Height 385-635 mm Part no. 067 519.

Energy rating

A+++.

HeatingCapacity

1.5–8 kW.

HeatOutput

7.5 kW to EN 14825.

CoefficientOfPerformance

Cold climate: 5.95 at 35°C, 4.44 at 55°C; Average climate: 5.67 at 35°C, 4.26 at 55°C.

Overall sound power level

36–43 dB(A).

Manufacturer guidance

To EN 12102 at 0/35.

SoundPressure

21–28 dB(A).

Manufacturer guidance

To EN ISO 11203 at 0/35 and 1m range.

Weight

231 kg.

Power output

Brine pump 2 - 75 W, heating medium pump 2 – 63 W.

Flowrate

0.43 L/s.

Manufacturer guidance

Brine in 0°C / water out 45°C.

Ancillary components

Outdoor temperature sensor, room sensor, o-rings, lever vessel (CM2), expansion vessel domestic hot water with holder (packed separately)(CM4), armoured hose (expansion vessel), filling hose (WN1), tundish (WM3), safety valve (FL3) 0.3 MPa (3 bar), pressure relief valve (QN17), Cold water shut off and expansion
relief valve, water heater (FL1), filling valves for
the climate system (QM11) and (QM13), filterball (QZ2) (G1 and G3/4), compression ring couplings (ø28 x G25 and ø22 x G20), label for external control voltage for the control system.

RatedVoltage

230 V – 50 Hz.

Refrigerant

R454B.

Operating pressure (maximum)

0.6 MPa.

Manufacturer guidance

Of tap water.

Supply pressure

1.6 MPa.

Manufacturer guidance

Of water (maximum).

Temperature limiter

89 °C.

Type:

Ground – water heat pump.
Water - water heat pump.

Sustainability data

Country of product manufacture

Sweden

Manufacturing plant location

Material

Aluminium
Steel
Brass
Copper
Stainless steel
Rubber

Recyclability

It is possible to recycle materials for all, or parts, of the product. The refrigerant contents of the product should always be recovered prior to processing. Recycling of the product can be done through fragmentation where the insulation material goes to energy recovery and metals for recycling.

Expected Life

20 year

BIM objects

Platform Compatible Version
Revit
 -

1

Product certifications

Quiet Mark Certification

S1256 Quiet Mark

Literature

NIBE S1256 - Installer Manual

NIBE S1256 - Installer Manual

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