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7. Special Configurations
7.1 No Common Wire at thermostat
In the event of a common wire not being available on the thermostat back plate it will be
necessary to either:
•
install an Energate Auxiliary Switch AS20 (No Common Wire and Dual Transformer
scenarios)
•
install an Energate Auxiliary Switch AS10 (No Common Wire scenario)
•
run a ground wire from the equipment to the thermostat back plate (No Common Wire
scenario)
In most situations, it will be more efficient to install the AS20 auxiliary switch.
Several units on the market were able to function without a common wire in 'power stealing
mode' or 'battery powered mode'. The battery included with the Energate thermostat is sufficient
to maintain crucial information during loss of mains power. However, the thermostat requires
more power than can be obtained using 'power stealing' or 'battery powered' mode which is why
it is required to be mains powered.