Power Supply Precautions; Wiring Diagram - Contemporary Controls BASstat BAST-121C-B2 User Manual

Single mode thermostat

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3.3. Power Supply Precautions

Internally, the BASstat utilizes a half-wave rectifier and can share the same AC power source with

other half-wave rectified devices. Sharing AC power with full-wave rectified devices is NOT

recommended. AC power sources that power several half-wave devices have a common secondary

connection called COMMON, LO, or GROUND. Connect the HOT side of the secondary to the 24

VAC high side input on the BASstat and the LO side to 24 VAC common.

WARNING: Devices powered from a common AC source could be damaged if a mix of half- wave

and full-wave rectified devices are both present. If you are not sure of the type of rectifier used by

another device, do not share the AC source with it.

UM-15095000-AA0

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