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Heat pumps

Ground source heat pumps

Nu-Heat's range of NIBE ground source heat pumps (GSHPs) is designed to supply the home with inexpensive and environmentally friendly heating and hot water using heat stored in the ground.

The efficiency of a ground source heat pump is measured in Coefficient of Performance (CoP). This is the ratio of units of heat output for each unit of electricity used to drive the compressor and pump for the ground loop. A CoP of 4 means that for every kilowatt of electricity put in, you get 4 kilowatts of energy in the form of warm water. The flow temperature of the warm water is typically between 35°C and 45°C; much lower than achieved by a domestic boiler. The units can reach higher temperatures, but the CoP is then compromised. Keeping the temperature at the lower end of the scale ensures the system operates efficiently and is the reason why heat pumps are the ideal partner for underfloor heating.

Benefits

 

  • Highly efficient
  • Modulating models (1155 and 1255), adjust output based on the heat needed, drawing last electricity
  • MCS approved for the Renewable Heat Incentive
  • Easy to read, intuitive display
  • Quiet, low sound level
  • Supplied with a full set of mechanical and electrical docking drawings
  • 7 year warranty when supplied and commissioned by Nu-Heat
  • Wireless remote control available through NIBE Uplink – read more

 

Heat pump performance & technical information
TECHNICAL DATA
SINGLE-PHASE
THREE-PHASE
Model size: NIBE 1155
NIBE 1145
6kW
12kW
15kW
17kW
CoP at B 0/W 35*
4.72
4.87
4.42
4.30
Dimensions
H1500 x W600 x D625mm
Net weight
150kg
185kg
191kg
199kg
Immersion heater
Yes
* In accordance with EN 14511 for heat source entry at 0°C/hot water flow at 35°C

 

TECHNICAL DATA
SINGLE-PHASE
Model size NIBE 1255
6kW
12kW
CoP at B 0/W 35*
4.72
4.87
Width
600mm
Depth
625mm
Net weight
250kg
265kg
Height (headroom needed to install)
1800mm (1950mm)
Immersion heater
Yes
* In accordance with EN 14511 for heat source entry at 0°C/hot water flow at 35°C

 

Product data sheets

NIBE F1145 [PDF – 1.3mb]
NIBE F1255 [PDF – 1.1mb]

 


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