In this article:
- Overview
- Wiring Diagram
- Functional Description
- Settings Required
Overview
The following wiring diagram shows a suggested application and are examples only; there are many more possibilities.
Please take a look at the Safety section within the installation manual and read all the installation sections before attempting to install the eddi.
A good level of electrical competence and a reasonable understanding of domestic plumbing systems is assumed for studying this application example.
Wiring Diagram
| Key for Wiring Diagram | |
| 1 - eddi device | 2 - Mains supply (230V AC from B16 circuit breaker or 13A fused spur) |
| 3 - Hot Water cylinder | 4 - Heating element 1 (max. 3.7kW) |
| 5 - Isolator (20A double pole) | 6 - Relay & Sensor Board (optional add-on for eddi) |
| 7 - Temperature probe (type PT1000) (optional) | 8 - Swimming pool |
| 9 - In-line electric pool heater (max. 3.7kW | 10 - Pool heater thermostat (16A rated) |
| 11 - Pool circulation pump | 12 - Pool circulation pump fused spur |
Functional Description
In properties that benefit from a swimming pool, eddi can be used to maximise self-consumption of surplus power, by first heating the domestic water before switching to divert the surplus power to contribute to pool heating.
Heater 1 (the immersion heater in the hot water cylinder) (4) is heated with surplus power until the domestic water is hot and the thermostat opens, then eddi will immediately switch over to Heater 2 to heat the pool (8) with surplus power.
During heating of the pool (Heater 2), eddi will briefly switch back to the domestic water heater (Heater 1) every 15 mins to check if it can store any more heat.
When Heater 2 is active (i.e. eddi is heating the pool), Relay 1 of the Relay & Sensor Board (6) will be on and so the pool circulation pump (11) will run thus transferring heat from the pool heater (9) to the swimming pool.
Installation of the temperature probes (7) is optional; the heaters' mechanical thermostats are used by eddi if temperature readings are not required.
Settings Required