How Do I Use The Thermostat Controls; How Do I Use The Central (Vacation) Mode; How Do I Use The Zone Mode - Lennox Harmony III Homeowner's Manual

Notice to Homeowner
The heating and air conditioning equipment in-
cludes safety devices that protect you and your
property. If one or more of these devices is acti-
vated, heating operation will stop. If your home is
left unattended for an extended period of time,
equipment operation must be checked periodically.
If this is not possible, the water supply to the house
should be shut off and the pipes should be drained.
This will prevent problems associated with a NO
HEAT condition (frozen pipes, etc.)

How do I use the thermostat controls?

Whether in central mode (where only zone 1 thermostat is func-
tional) or in the zone mode (where all thermostats are functional),
thermostats function as in a traditional, non−zoned, system. That
is:
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HEAT setting tells the control center that it should provide
heat to the zone(s) when it is needed.
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COOL setting tells the control center to provide cool air to the
zone(s) when there is a need.
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AUTO setting allows either heating or cooling to occur, de-
pending on the need. This selection is best in spring or au-
tumn, when the temperature is cool in the morning but still
warms in the afternoon. By placing the thermostats in AUTO,
heating would come on in the morning and cooling in the af-
ternoon, if needed.
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FAN AUTO or FAN ON tells the control center how the blower
should operate. Select one or the other. FAN AUTO allows
the blower to turn on and turn off with the heating or cooling
needs. FAN ON tells the blower to run continuously. Zone-
controlled dampers in the system make it possible to have
some zones call for continuous fan (FAN ON) while other
zones are set to FAN AUTO.

How do I use the central (Vacation) mode?

When you choose central (Vacation ON) mode, heating and cool-
ing will affect all zones.
1. Move the vacation switch on the zone control to VACATION
ON (or, if used, move the remote vacation switch to vacation
on").
2. Choose either HEAT or COOL or AUTO on the master (zone
1) thermostat.
3. Choose either FAN AUTO or FAN ON on the master thermo-
stat.
4. Set master thermostat to desired room temperature.

How do I use the zone mode?

When you choose zone (Vacation OFF) mode, heating and cool-
ing is controlled by specific zone thermostats.
1. Move the Vacation switch on the control center to OFF.
2. Choose either HEAT or COOL or AUTO on each thermostat
(thermostats need not be set alike).
3. Choose either FAN AUTO or FAN ON on each thermostat
(these may be set differently in each zone).
4. Set thermostats to desired room temperature.
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