It is recommended to install an ON/OFF isolation switch before the controller and ensure the unit is turned OFF
after use.
Multiple heaters can be operated using a single controller, however the maximum current rating of 16A must not
be
exceeded. For direct wiring to the controller, the maximum is generally on heater unit unless the combined
maximum current is less than 16A. For example, 2x THH1800A can be connected directly to the controller.
Below are example circuits indicating potential installation configurations.
Always check with your electrician and ensure all wiring is in accordance with local regulations.
Heater wiring schematic diagrams
1x THY3200 (or THY3200W)
1x THY2200 or THY2200W
THY2200
Heater
THY3200
Heater