Honeywell CT3500 Owner's Manual - Page 18

Step 12. Set the Fan and System Switches

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STEP 12. SET THE FAN AND SYSTEM SWITCHES First set the fan switch. Fan On: The fan runs continuously. Use for improved air circulation or for more efficient central air cleaning. (In a heat-only system, fan runs continuously only if fan relay is connected to the G thermostat terminal). Fan Auto: Normal setting for most homes. The equipment controls the fan operation. Then set the system switch. Heat: The thermostat controls your heating system. Off: Both the heating and air conditioning systems are off. Cool: The thermostat controls your air conditioning system. On Fan Auto On Fan Auto Heat System Heat System Off Cool Off Cool Heat System Off Cool 69-1199-4 18

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STEP 12. SET THE FAN AND SYSTEM SWITCHES
First set the fan switch.
Fan On: The fan runs continuously. Use for improved air
circulation or for more efficient central air cleaning. (In a
heat-only system, fan runs continuously only if fan relay is
connected to the G thermostat terminal).
Fan Auto: Normal setting for most homes. The equipment
controls the fan operation.
Then set the system
switch.
Heat: The thermostat controls your heating system.
Off: Both the heating and air conditioning systems are off.
Cool: The thermostat controls your air conditioning system.
On
Auto
Fan
On
Auto
Fan
Heat
Off
System
Cool
Heat
Off
System
Cool
Heat
Off
System
Cool