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Heater wiring schematic diagram with relays
When multiple heating units need to be connected from a single controller a relay will be required. It is recommended that
you talk to your electrician for more detail. Below is an example circuit indicating a potential installation configuration.
Always check with your electrician and ensure all wiring is in accordance with local regulations.
Note to electrician: The controller modulates the heat output using a “timed on / timed off” function. The controller does not
modulate the voltage output. A relay is therefore suitable for this application.
CAUTION: A MINIMUM 250W LOAD MUST BE PLACED ACROSS THE CONTROLLER
Failure to provide this minimum load will potentially damage both the relay/contactor AND
INCORRECT WIRING
CORRECT WIRING