Nordyne IQ Drive User Manual Download Page 15

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iQ Zone is a special variation of the iQ Drive system
which combines the features of an iQ Drive heating and
cooling system with that of zoning. Zoning subdivides
the home into two to eight separate rooms or groups of
rooms (zones) which can be individually controlled for
heating, ventilation, and air conditioning. An iQ Zone
system is controlled through a combination of the iQ
Drive thermostat/controller and local zone thermostats,
whose operation is described in detail in the iQ Zone
System Zone Thermostat User’s Manual.

When zone control is in effect, the Main Screen of
the iQ controller will appear
slightly different from that
shown on page 3, which is
for non-zoning operation. No
temperature will be displayed,
and ZONE CNTL appears
beneath the operating mode.

For zoning operation, the
Operating Mode (COOL,
HEAT, AUTO, E-HEAT, or OFF) must be selected from
the iQ Drive thermostat/controller as with non-zoning
systems. However, the temperature setpoints that
will be used are entered and stored at the local zone
thermostats. With iQ Zone systems, all settings made
in the iQ thermostat/controller relevant to a temperature
setpoint (temporary hold, vacation hold, permanent
hold, time schedule, smart recovery) do not apply
unless zone control is disabled. Similar features are
provided and controlled at each zone independently
from the local zone thermostats. For example,
Manual Setpoint Control replaces Temporary Hold,
Automatic Setpoint Control replaces time schedules,
and Sleep Mode replaces Smart Recovery. See the
iQ Zone System Zone Thermostat User’s Manual for
information on these alternative features.

NOTE:

The

iQ Zone system uses a single setpoint for both heating
and cooling, as opposed to the standard non-zoning
system, which uses a different setpoint for each.

Zone Control is enabled by default if your system is
equipped with and wired for iQ Zone. This is the normal
operating situation. However, zone control operation
can be disabled by choice or it may be automatically
disabled if a problem is detected. When zone control is
disabled, the thermostat operates as explained in this
manual, and the Main Screen will revert to displaying
the temperature value.

To manually disable zone control when zoning is
already enabled:
1. Select MENU on the Main Screen using the

or button.

2. Press the button.
3. Select SETTINGS using

the

button.

4. Press the button.
5. Select ZONE CONTROL

using the

button.

6. Press the button.
7. Press the or

button

to change ENABLE to DISABLE.

8. Press the button to save the setting.

NOTE:

To restore zone control, follow steps 1-8 above,

but in step 7 change DISABLE to ENABLE.

Current date and time must be set in the iQ thermostat/
controller as described on page 4. Date and time will
be transmitted to and continually updated in the local
zone thermostats.

iQ Zone offers two types of ventilation that can be
turned on when the cooling or heating systems are
not running:
• If you wish to use the fan to deliver air to some but

not all zones when not heating or cooling, use the
zone ventilation feature that is set up at the individual
zone thermostats. See the iQ Zone System Zone
Thermostat User’s Manual for information on how
to set up zone-by-zone ventilation. From the FAN
MENU, enter the VENTILATION SPEED screen
in the iQ thermostat/controller to select or modify
the relative speed to be used when this type of
ventilation is operating.

• If you wish to use the fan to deliver air to all zones

when not heating or cooling, set the Fan Mode to ON
as described earlier in this guide. The Intermittent
Fan feature described earlier will also operate,
serving all zones.

Temperature units can be changed to Fahrenheit or
Celsius, but should be converted by an installer trained
and certifi ed in iQ systems.

The Security Lockout feature described on page 8 will
not prevent changing settings in local zone thermostats
in an iQ Zone system.

NOTE:

When changes are

made with iQ Zone, the system may appear to have
a delayed response. Generally this is due to extra
time needed for zones to open or shut in preparation
for the change.

HUMIDITY

COOL

FAN AUTO

MODE

FAN

TEMP

1/19/09

10:00 AM

OUTDOOR

ZONE CNTL

ZONE CONTROL

MODIFY