If you have a very "sensitive" electrical supply, then some heat pumps have an optional (or built in) "soft-start" option. The soft-start option "eases" in the startup current up to the running current to avoid a power spike on startup.
The soft-start kit/option is normally only required for installations using a large single phase heat pump (eg 30kw) with a limited or sensitive electrical supply. In extreme situations, the house lights may flicker or the circuit breaker trips when the heat pump starts up. The soft-start kit helps to prevent this.
The soft-start option is not normally required in the UK, or on small heat pumps or on 3-phase heat pumps. Please contact us for further information.
We sell a third-party soft start module that can be added to virtually any heat pump.
Armoured cable is normally used to supply the heat pump. This is to prevent the cable from being accidentally damaged (eg by digging through it with a spade)
The size (thickness) of the cable required depends on the length of cable used. A longer cable run will require a thicker cable due to the increased resistance of the long cable.
The armoured cable should be run to a rotary isolator switch which should be located within 1-meter of the heat pump to allow the power to be easily killed to the heat pump
The electrical work should be completed by a qualified electrician who can calculate the cable size required.
The heat pump must also be properly earthed.
As the heat pump is outdoors, the electrical circuit should also be protected by an RCD
Most properties have a single-phase electrical supply. 3-phase electrical supply is normally only found on larger properties or on commercial installations. If you are not sure, you probably have a single phase electrical supply, but ask your electrician to confirm this for you.
Single phase supplies operate at around 230-240v in the UK and have one live wire, neutral and earth and are the most common type of power in domestic properties.
Larger properties may have a 3-phase power supply. This typically operates around 380-415v and uses three live wires, a neutral and earth wires.
Note that most 3-phase installations are 380v-415v, however in France it is possible to find both 380v-415v and some older 220v 3-phase supplies, so please check which type you have before ordering.
All of our heat pumps are manufactured to work with 50hz electrical supplies (which are used throughout Europe)
Note that in the USA, they use a 60hz electrical supply. USA specification heat pumps will not work in the UK or Europe. All of our heat pumps are made to use a 50hz electrical supply.
The electrical control boxes can be custom designed to your requirements.
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