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4 — Apollo Control CONTROL WIRING APOLLO CONTROL WIRING TO THERMOSTAT Fig. 5 — Apollo Control Factory-Installed In Typical Unit Thermostat Installation — Begin the thermostat installation by determining where the thermostat will be located. In most cases, this will be pre-determined by the building plans. Locate the thermostat on an interior wall, about 5 ft from the ground. The thermostat should be located away from direct sunlight, drafts, or interior heat sources which may influence temperature readings. The thermostat may also be mounted in a remote location with the use of an optional remote room sensor. Refer to the specific thermostat information for more details on thermostat installation. Wiring Connections Electric shock can cause injury or death. Ensure power to the rooftop unit has been disconnected, before wiring. WIRE APOLLO CONTROL TO THERMOSTAT — Wire each thermostat to its respective Apollo control as shown in Fig. 6. Make wiring connections at the wiring connector board of the thermostat. WIRE THERMOSTAT TO COMMUNICATION BUS — The thermostat is connected to the communication bus through the thermostat wiring connection block. Connect the black, red, and green wires from the communication bus to the thermostat wiring connection block. See Fig. 6. To connect other devices to the communication bus, refer to the application manual for that device. Provide Power To Apollo Control — After the wiring has been completed, provide power to the Apollo control. Once power has been provided, the Apollo control will power the thermostat. The heating (if applicable) and/or cooling set points will appear on the thermostat display screen. The thermostat is now ready to be programmed. If the display is blank or blinking, recheck the wiring connections between the thermostat and Apollo control. OPERATION There are 3 system switches which are used to control operation at the thermostat: Heat, Cool, and Fan. The Heat and Cool switches can be set to either AUTO. or OFF position. The Fan switch can be set to either AUTO or ON position. When the fan is running, the FAN indicator will be shown on the thermostat display screen. When Cooling mode is energized, the COOL indicator will be shown on the thermostat display screen. When Heating mode is energized, the HEAT indicator will be shown on the thermostat display screen. When the second stage of heating or cooling is energized, a decimal point is displayed between the heating and cooling set points. AUTO. Fan Mode — The fan will energize any time the system energizes heating or cooling. The only exception is when the thermostat controls a gas heating rooftop unit. In this application, the thermostat will allow the rooftop unit to control the fan during Heating mode, and the fan will run in Cooling mode. ON Fan Mode — The fan will operate continuously during the occupied mode. In unoccupied mode, the fan will only operate when a system mode is energized. AUTO. Heating Mode — When the Heat switch is set to AUTO. position, the Apollo control will energize heating when the heating demand is 1.5° F or greater. The second stage of heating will energ...

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