Fan Operation
The Lennox Control Panel allows you to control fan operation
from any zone. Dampers in zones not calling for fan will close. If
continuous fan operation is desired in all zones, the fan must be
turned on at the thermostat in each zone. An LED labeled “Fan
On”, on the zone panel enclosure will indicate if the HVAC fan is
on.
Turning the System Off
In order to shut off the system and prevent the Control Panel
from turning on your equipment, you need to set ALL of your
thermostats to the OFF mode. Depending on your thermostats,
this is done manually with a slide switch on your thermostat’s sub-
base or with a digital push button. Consult the Owner’s Manual for
your particular thermostat.
If leaving for a long period of time, set the thermostats to the Heat
mode and adjust the set point to a temperature that will prevent
freezing in all areas. Then move the ‘Vacation’ Switch, located on
the Zone Control panel, to the ‘On’ position. The system will then
be controlled by the Zone 1 thermostat only. This prevents having
to adjust all thermostats twice, when leaving and upon return. It
is not recommended to turn off all thermostats for extended
periods in climates where freezing temperatures may occur.
Thermostat Replacement
Not all thermostats will work for all systems. If you need to
replace a thermostat, call the Lennox dealer that installed your
system. Certain types of thermostats, known as power robbing
thermostats, could cause unintended operation and should never
be used. You can tell if a thermostat is power robbing by looking
to see if it does not have a wire connection terminal labeled C
(common). Power robbing thermostats do not have a C terminal.
Only thermostats with a C terminal should be installed.
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