CCTHV Outputs

2x Triac

The two triac outputs are protected with 550 mA fuses. Those fuses reset automatically when power supply is turned off from the thermostat for a few seconds.

4x Relay

The 4 relay outputs are independent but are grouped from 2 common terminals. Terminal RC is tied to Y1 and Y2 and COM is tied to G and AUX.

0-10Vdc

0-10Vdc output is protected against short-circuits and inverted polarity from a 140 mA fuse. However, the use of a maximum 5 mA load or lower is recommended since it may generate heat and influence temperature readings of the device. The fuse resets automatically when power supply is turned off from the thermostat for a few seconds.