Carrier A07051 Installation Instructions Manual page 13

C operates a cool only system: outdoor AC unit with an indoor fan coil; no strip
heater support.
Note that this option allows a HP thermostat to be converted to control an AC
system.
Option 03 - - Fahrenheit/Centigrade
Selections:
F = Fahrenheit — Default is Fahrenheit.
C = Centigrade.
Selects temperature measurement units.
Option 04 - - Fan (G) ON with W output
Selections:
OF = G not energized with W — This is default.
ON = G energized with W.
This selection determines whether the fan (G) is to be ON or OFF when the W
(furnace or strip heat) is ON. Furnaces and fan coils which manage their own
blowers do not require a separate G signal. Some auxiliary heaters require a
separate G signal to operate the blower when W is applied.
Option 07 - - Zoning
Selections:
OF = non- -zoned system — This is default.
ON = zoned system.
ON disables thermostat's internal timers which are not needed with zoning
system controls. Must be set to OF for non- -zoned systems.
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