
Heat Pump Manual
Your home is equipped with a high-efficiency air-to-water heat pump which provides heating and hot water. For more information on how the heat pump operates, please check the operational manual you’ve been provided with. The external heat pump unit is located at the rear of your home.
Heating Zones and Maximum Temperature
The heating system is designed to provide you with two separate heating zones. Zone 1 is the ground floor, which is controlled by the thermostat located in the hallway. Zone 2 is the first floor, which is controlled by the thermostat located at the upper-level landing area. You can set the thermostat to the required temperature by turning the dial on the thermostat. The maximum temperature for the heating system is 21 degrees. This is because heat pumps operate differently from standard gas boiler installations, in that the heating water temperature is significantly lower. The lower the heating water temperature through the radiators, the more efficient and cheaper the system will be. Therefore, for the heating system to operate at its best efficiency, it’s recommended to maintain a consistent temperature rather than turning it on and off.
Zone Thermostats and Radiators
The zone thermostats control the heat pump and reduce the output when the desired temperature has been reached. This will ensure a comfortable environment throughout your home, with the added benefit of lower energy costs. Turning the heat pump on and off like a boiler system results in periods of high loading and this will reduce the efficiency and increase running costs. When the heating system is switched on and the set temperature is reached within the zone, the system will close the valve serving the heating zone until the temperature drops below the set temperature.
In addition to zone thermostats, individual radiators are also provided with thermostatic mixing valves. These can be adjusted independently of the zone thermostat, allowing an increase or decrease of radiator output as required in each room. Bear in mind that adjusting the radiators will not override zone thermostat settings, so it will only allow to regulate the temperature in the room you require.
External Heat Pump Unit
The external heat pump unit contains a fan that ramps up and down depending on the heating requirement. Care should be taken to ensure that no obstructions or obstacles are placed in the vicinity as this can affect performance. For further guidance, please refer to the Joule manual you’ve been provided with. All equipment has been commissioned and preconfigured to ensure optimum efficiency and operation of the unit. You should only adjust temperature and time settings – any other adjustments should only be carried out by a qualified engineer.