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How do I use the thermostat controls?
Whether in central mode (where only zone 1 thermostat is
functional) or in the zone mode (where all thermostats are
functional), thermostats function as in a traditional, non−
zoned, system. That is:
S HEAT setting tells the control center that it should pro-
vide heat to the zone(s) when it is needed.
S COOL setting tells the control center to provide cool air
to the zone(s) when there is a need.
S AUTO setting allows either heating or cooling to occur,
depending on the need. This selection is best in spring
or autumn, when the temperature is cool in the morn-
ing but still warms in the afternoon. By placing the ther-
mostats in AUTO, heating would come on in the morn-
ing and cooling in the afternoon, if needed.
S 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 sys-
tem make it possible to have some zones call for con-
tinuous fan (FAN ON) while other zones are set to FAN
AUTO.
What does the service light indicate?
On heat pump systems only, the service light, located on
the master thermostat, indicates that the outdoor unit re-
quires service. The service lights on zone 2, 3 and 4 ther-
mostats are not functional. Call your Lennox service tech-
nician if the service light on the zone 1 thermostat is lit.
How do I use the central (Vacation) mode?
When you choose central (Vacation ON) mode, heating
and cooling will affect all zones.
1. Move the Vacation switch on the control center to 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
thermostat.
4. Set master thermostat to desired room temperature.
How do I use the zone mode?
When you choose zone (Vacation OFF) mode, heating
and cooling 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 ther-
mostat (thermostats need not be set alike).
3. Choose either FAN AUTO or FAN ON on each thermo-
stat (these may be set differently in each zone).
4. Set thermostats to desired room temperature.