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INTELLIZONE2 SPECIFICATION CATALOG
IntelliZone2 Features
IntelliZone2 Features
• Up to 6 zone possible in variable speed systems
(maximum of 4 for dual capacity units and 2 for single
speed units)
• 4.3 in. Color touchscreen master thermostat for ease of use
• TPCC32U01, ZoneStat, SensorStat or SensorStat Remote
Kit options for zones 2-6
• Full communicating system for advanced features:
• Full text Faults/Alarms from IZ2 and 5 or 7 Series heat pump
• Adjust zone setpoints from Masterstat or Zonestat
• Full features of 5 and 7 Series heat pumps are
communicated including faults, energy monitoring,
superboost cooling mode and active dehumidification
- Full zone setback programming from each zone.
- Dealer configuration mode
- Full color touchscreen troubleshooting display
• No bypass damper or dump zone needed.
• 2 (spring) or 3 wire damper options.
• Central Zone option operates all dampers open
on temperature measurement from MasterStat for
construction or service operation.
• Economy/comfort settings for each zone to reduce
operating costs In less important rooms.
• Zones are 'sized' to provide more proper compressor and
blower staging.
• Staging flexibility allows several up/down staging options
for customization to your application.
• Full Aurora controls capability
Flexibility in Zone Comfort Control
The IntelliZone2 allows comfort or economy mode selections
for each zone.
In ‘Comfort Mode’ a single zone call for conditioning will
engage the compressor and allow a minimal set point
variation, thus providing ultimate comfort. However in
‘Economy Mode’ a single zone call for conditioning will be
ignored until either a next level call for that zone or a second
zone call occurs. This will allow slightly greater temperature
fluctuations in these zones allowing lower operating costs
in areas such as rec rooms, unused bedrooms where slightly
higher temperature variation would not be noticeable.
Flexibility in System Staging
(single or dual capacity equipment)
The IntelliZone2 System allows four different staging options
for both heating and cooling. Once the compressor call has
been initiated by a zone, the compressor will be upstaged
using one of four staging options in single, dual, or variable
capacity equipment. The modes are Normal, Quicker, Faster1
and Faster2. More detail is listed later in this document.
Eliminating Bypass Damper
By utilizing the full functionality of the ECM blower motor,
the bypass damper can be eliminated from the zone system.
In effect, the ECM replaces the bypass damper.
In conventional systems, the air handling device can deliver
airflow only at one or two levels, which means a significant
amount of excess air must be “bypassed” to the return. By
looking at which zones are calling, the IntelliZone2 determines
the most efficient compressor and blower speeds. Since the
IntelliZone2, with its six/eight speeds on-line at all times, has
the ability to deliver the correct amount of airflow that the
structure is calling for, there is no need for bypass.
When utilized properly, the ECM motor will provide precise
airflow control for a given space. The ECM will operate on up
to six/eight pre-configured airflow levels depending on the
load requirements of the house. All airflow is setup for the 5
or 7 Series in the AID Tool. If the IntelliZone2 is controlling:
• 5 Series single or dual-capacity unit, there will be 6
total airflow levels, two airflow levels for low-speed
compressor operation and two airflow levels for high-
speed compressor operation and one for continuous
blower and one for auxiliary heat.
• 7 Series variable speed unit, there will be 8 total airflow
levels, one airflow level continuous blower and auxiliary
heat settings and six airflow levels for the variable
speed compressor ranging from 25, 40, 55, 70, 85, and
100% airflow depending upon the zone call.
By varying the airflow level per the needed output capacity of
the heat pump, bypass is eliminated and the correct amount
of air is delivered to the house. Consult the 5 and 7 Series
technical literature for more information on airflow setup.
Efficient Space Conditioning
Traditional zone control systems control single-speed
compressors and single-speed blowers and typically
use single heating and cooling calls to determine space
conditioning needs. By operating at only one capacity level,
these traditional systems are seriously handicapped in their
ability to handle the varying load of the structure.
The IntelliZone2 control system controls the dual-capacity
and variable speed compressor as well as the ECM variable-
speed blower, coupling this variable capacity equipment
with multiple level zone calls allows the IntelliZone2 to
exactly match the demands of the space.
One of the goals of the IntelliZone2 system is to minimize
compressor and blower operation by operating at the lowest,
most efficient speed possible. The IntelliZone2 makes logic
decisions which minimize compressor run-times and help
decrease energy cost. For example: If one or more zones
have Y1 demand calls, the thermostat has determined that
the particular zones need conditioning, but the demand is at
a low level. The IntelliZone2 control algorithm will take these
low level calls and determine what compressor capacity with
the proper airflow will satisfy the zone calls. Thus, the system
operates in lower capacity most of the time and intelligently
provides cost-efficient space conditioning control.
Many times, as in any structure, the space conditioning peak
load for each zone can happen at a different time throughout
the day. This may be due to sun, wind, or even the zone use.
This diversity can sometimes allow slightly smaller capacity
equipment to condition one zone during its morning peak and
then condition another during its afternoon peak, whereas
an unzoned structure would have to be sized with larger
capacity equipment to condition both areas at once.
