15
® 2018 Valco Companies, Inc.
Zones
This controller has a ZONE key and has multiple zone capability. This lets you specify different environmental
conditions in individual rooms or areas. When two or more zones are set up, the controller can act like two or more
separate controllers.
Zone Example
There are a few rules that pertain to multiple zones:
• Output channels cannot be assigned to more than one zone.
• Sensors cannot be assigned to more than one zone. Zoning isolates sensors in each zone. For example: zone 1 can
not read or average sensor readings from an inside temperature sensor in zone 2.
Effective Environmental Temperature (EET)
The following sections on Zones, Effective Environmental Temperature (EET) and Ventilation Modes are necessary
for you to understand in order to set up the control and run your barn effectively.
The exception here is the "Air Sensor Shared" device. This device is not assigned to a separate air
probe but is assigned to a module/channel that has another "Air Sensor" assigned to it. The "shared"
sensor can be assigned to a different zone than the one the actual air probe is installed in. This allows
two zones to share the same physical air probe.
EET takes into account the effect that air movement has on
HOW
comfortable an animal feels
(requires an air
temp/speed sensor such as Air Sensor Model 935).
This feature is based on the understanding that the higher the
air movement is through a building, the cooler the animals feel. Since the animals feel cooler than what the actual
temperature is, the fans and inlets are operated based on a lower temperature, than if the wind speed weren’t
present. This method keeps the animals from getting too chilled.
The controller uses three temperature settings to determine what temperature is used to operate the devices.
These are:
•
Actual Temperature
- the actual temperature readings from the Air Sensors with no wind speed adjustments.
• Effective Temperature
- The temperature from the air sensors with the maximum cooling effect of the air
movement taken into account. This will be lower than the actual temperature.
•
Working Temperature
- This is the temperature used to control the devices. This will be somewhere between
the Actual Temperature and the Effective Temperature, depending on the "Temp Control" setting.
(EET continued on next page)
Essential Background Information
