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OVERVIEW |
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Zone 1 = 13m2 @ 20% open, Zone 2 = 12m2 @ 30% open, Zone 3 = 20m2@ 0% open, Zone 4 = 11m2@ 90% open, Zone 5 = 22m2@ 10% open, Zone 6 = 18m2@ 0% open. The Area to be covered by a single constant is 38m2 (This should be determined by the system designer). In this example the amount of active zones will be the calculated as follows:
Zone Name | Zone Area | Percent Open | Equivalent M2 |
Zone 1 | 13 | 20 | 2.6 |
Zone 2 | 12 | 30 | 3.6 |
Zone 3 | 20 | 0 | 0 |
Zone 4 | 11 | 90 | 0.9 |
Zone 5 | 22 | 10 | 2.2 |
Zone 6 | 18 | 0 | 0 |
Total | 96 |
| 18.3 |
The equivalent of 18.3m2 is active and the minimum area to be covered as stated above is 38m2
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Zone temperature control requires the respective zones to be set to "Climate" and uses the iZone sensors to modulate the zone dampers to maintain the zone set point. Critical to the control of the zone temperatures is the supply air sensor (CDTS) which is used to invert the operation of the zone dampers when operating in heating and to avoid hot or cold air being blown into a zone when the the system first starts. The zone temperature control strategies use the following parameters for control:
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Zone Set Point (SP) |
As selected by the user
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Zone Actual Temperature (ACT) |
As measured by the zone sensor. The displayed value takes into account any calibration offsets from the configuration menu
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In Duct Temperature (SA) |
As measured by the CDTS sensor
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Open - Zone damper is open to its maximum position after the MAX balancing % and user MAX Airflow % have been taken into account |
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Close - Zone damper is closed to its minimum position after the MIN balancing % and user MIN Airflow % have been taken into account |
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Output data from iZone to Air conditioning unit (FCU)
System (S) | On / Off |
Mode (M) | Cool / Heat / Vent |
Fan Speed (FS) | Low / Med / High / Boost2 |
Set Point (SP) | The temperature selected by the end user. |
Actual Temp (ACT) | If configured to control from one of iZones remote sensors ie. Zones, Master or RF. If RA is selected the unit will use its own return air sensor for ACT |
Field settings | RA sensor or Remote Sensor |
Input data from Air conditioning unit (FCU) to iZone
Status of System (S) | Current status of the system On or Off |
Status of Mode (M) | Current Mode the AC is running in |
Status of Fan Speed (FS) | Current Fan Speed the AC is running |
Status of Set Point (SP) | Current SP the AC unit is using |
Status of Return Air Temperature** | Regardless of which sensor is being used to control the AC |
Fault codes** | If there is a fault with the AC unit the code will be passed to the iZone system |
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iSave |
The iSave system cools your whole home using your ducted reverse cycle air conditioner’s fan mode.
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| Note |
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Please note this feature is available for Western Australian users only at the moment. If you are in Eastern States and would like to know about the possibility of installing iSave with your iZone system on your reverse cycle ducted unit (if compatible), please contact supportdesk@izone.com.au for further information and guidance. |
The iSave system enhances your ducted reverse cycle air conditioner by efficiently utilizing its fan mode to cool your entire home. It operates by drawing in fresh air from outside, filtering it, and circulating it into your living spaces, while expelling hot air through your roof space or open windows. This creates a cooling effect similar to an evaporative air conditioner but without the need for a bulky rooftop unit or water.
Using the iSave system can significantly reduce your air conditioning costs, as it runs for just a few cents per hour. The more you use it instead of your conventional ducted reverse cycle air conditioner, the more you save. It also helps your primary air conditioner work more efficiently by preventing heat buildup, which reduces its workload and operational costs.
The iSave system filters the incoming air to improve indoor air quality. It can be installed with both new and existing ducted reverse cycle air conditioners, as long as there is sufficient roof space for the additional ductwork and components. This system offers a practical and cost-effective way to boost your home’s cooling efficiency and reduce energy consumption.
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AC UNIT CONTROLLING SENSOR |
The iZone system offers various option for the sensor to control the AC unit as follows:
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How to select the control sensor options?
Control Sensor options | Actual temperature measured from … | Number of temperature sensors in use |
Return Air Sensor | AC unit return air sensor | 0 |
Zones | iZONE wireless/wired temperature sensor per zone | 1 to 14 |
Master | iZONE wall controller | 0 |
RF Sensor | Single iZONE wireless/wired temperature sensor anywhere in home | 1 |
The strategies for each sensor type are detailed below:
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It should be noted that the differences of the average percentage of airflow for each fan speeds are not significant. The changes in air flow are approximately as per the following table:
Average AC Unit | Percentage of High Speed |
|---|---|
High Speed | 100% |
Low Speed | 80% |
Low Speed | 60% |
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MODE CONTROL |
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The functions that can be controlled are as follows:
Function | iZone | Other |
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On/Off | ● | ○ |
Mode | ● | ● |
Fan | ○ | ● |
Set point | ● | ○ |
In the above table the following is applicable.
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