LG AR-DR12-05A Installation And Operation Manual page 67

INDIRECT GAS FIRED FURNACES
Furnace Control Center
Each ventilating unit containing one or more furnaces will have a furnace control center located on the furnace vest plate. The control center
receives high voltage AC from the main unit control center and in most cases, also receives low voltage control signals (call for heat) from the
main unit control center. In all cases, see the unit-specific wiring schematic located inside the furnace door.
Furnace Control Center Components
Components and their locations will vary. Components shown are for a typical 4:1 turndown electronic modulation configuration.
Figure 33: Typical Electronic Modulation Configuration
Due to our policy of continuous product innovation, some specifications may change without notification.
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